
Water Filters
For Models:
• APBF
• APIS

TABLE OF CONTENTS
Pre-Installation Instructions for Dealers ................................................3
Bypass Valve ......................................................................4
Installation ........................................................................5
Programming Procedures ............................................................8
Startup Instructions ...............................................................10
Operating Displays and Maintenance .................................................11
Replacement Mineral Instructions for Acid Neutralizers .................................16
Troubleshooting Guide .............................................................18
Replacement Parts ................................................................23
Installation Fitting Assemblies ......................................................29
Specifications .....................................................................31
Warranty .........................................................................32
Quick Reference Guide .............................................................33
Your A. O. Smith Pro Series water filter is a precision built, high quality product. These units will deliver filtered water for many
years to come when installed and operated properly. Please study this manual carefully and understand the cautions and
notes before installing. This manual should be kept for future reference. If you have any questions regarding your water filter,
contact your local dealer.
YOUR WATER TEST
Hardness ______________________ gpg
Iron __________________________ ppm
pH ___________________________ number
*Nitrates ______________________ ppm
Manganese ____________________ ppm
Sulphur _______________________ yes/no
Total Dissolved Solids ____________
*Over 10 ppm may be harmful for human consumption.
Water conditioners do not remove nitrates or coliform bacteria,
this requires specialized equipment.
PRODUCT INFORMATION
MODEL NUMBER
SERIAL NUMBER
DEALER INFORMATION:

3
PRE-INSTALLATION INSTRUCTIONS
THE DEALER SHOULD...
•Read this page and guide the installer
regarding day override and time of
regeneration settings prior to installation.
THE INSTALLER SHOULD...
•Program installer settings including day
override and time of regeneration.
•Read Operating Displays and Maintenance
section.
•Set the time of day.
•Read Power Loss and Error Display section.
•Ensure that system and installation are in
compliance with all state and local laws and
regulations.
THE HOMEOWNER SHOULD...
•Read Programming Procedures section.
•Read Operating Displays and Maintenance
section.
The manufacturer has preset the water treatment unit’s sequence of regeneration cycles and cycle times.
GENERAL OPERATING DISPLAYS & NAVIGATION
During normal operation, the default user displays are “time of day” and “gallons per minute”. Flow rate, capacity remaining, and days to a
regeneration are optional displays. For more explanation, consult the “operating displays and maintenance section”. Pressing the NEXT button on a
general operating screen will cycle through the available operating displays.
In any screen other than a general operating display, the NEXT button will proceed to the next step, the REGEN button will return to a previous step,
and the CLOCK button will return to the general operating displays. Any changes made prior to the exit will be incorporated. If no buttons are pressed
within five minutes, the display will return to the general operating displays.
DOUBLE REGENERATION
Two generations within 24 hours are possible with a return to the preset program. To initiate a double regeneration:
1. Press the REGEN button once. “REGEN TODAY” will flash on the display.
2. Press and hold the REGEN button for three seconds until a regeneration begins.
Once the valve has completed the immediate regeneration, the valve will regenerate once more during the preset time.

4
“TREATED”
WATER EXITS
SUPPLY
WATER ENTERS
NORMAL OPERATION
POSITION
BYPASS POSITION DIAGNOSTIC POSITION SHUT OFF POSITION
FIGURE 1
SUPPLY
WATER EXITS
SUPPLY
WATER ENTERS
FIGURE 3
SUPPLY
WATER EXITS
SUPPLY
WATER ENTERS
FIGURE 2
NO
WATER EXITS
SUPPLY WATER IS
SHUT OFF
TO THE HOUSE
AND THE VA LV E
FIGURE 4
BYPASS VALVE
The bypass valve is typically used to isolate the control valve from the plumbing system’s water pressure in order to perform control
valve repairs or maintenance. The 1” full flow bypass valve incorporates four positions, including a diagnostic position that allows a
service technician to have pressure to test a system while providing untreated bypass water to the building. Be sure to install bypass
valve onto main control valve before beginning plumbing or make provisions in the plumbing system for a bypass. The bypass body and
rotors are glass-filled Noryl® and the nuts and caps are glass-filled polypropylene. All seals are self-lubricating EPDM to help prevent
valve seizing after long periods of non-use. Internal “O” Rings can easily be replaced if service is required.
The bypass consists of two interchangeable plug valves that are operated independently by red arrow shaped handles. The handles
identify the direction of flow. The plug valves enable the bypass valve to operate in four positions.
1. NORMAL OPERATION POSITION: The inlet and outlet handles point in the direction of flow indicated by the engraved
arrows on the control valve. Water flows through the control valve for normal operation of a water softener or filter. During the
regeneration cycle this position provides regeneration water to the unit, while also providing untreated water to the distribution
system (Fig. 1).
2. BYPASS POSITION: The inlet and outlet handles point to the center of the bypass. The system is isolated from the water
pressure in the plumbing system. Untreated water is supplied to the building (Fig. 2).
3. DIAGNOSTIC POSITION: The inlet handle points toward the control valve and the outlet handle points to the center of bypass
valve. Untreated supply water is allowed to flow to the system and to the building, while not allowing water to exit from the system
to the building (Fig. 3). This allows the service technician to test the unit and perform other functions without disrupting the water
going to the building.
NOTE: The system must be rinsed before returning the bypass valve to the normal position.
4. SHUT OFF POSITION: The inlet handle points to the center of the bypass valve and the outlet handle points away from the
control valve. The water is shut off to the building. The water treatment system will depressurize upon opening a tap in the building.
A negative pressure in the building combined with the unit being in regeneration could cause a siphoning to the building. If water
is available on the outlet side of the unit, it is an indication of water bypassing the system (Fig. 4) (i.e. a plumbing cross-connection
somewhere in the building).

4 5
GENERAL INSTALLATION & SERVICE WARNINGS
The control valve, fittings and/or bypass are designed to accommodate minor plumbing misalignments. There is a small amount of “give” to properly
connect the piping, but the water treatment unit is not designed to support the weight of the plumbing.
Do not use petroleum jelly, oils, other hydrocarbon lubricants, or spray silicone anywhere. A silicone lubricant may be used on black “O” Rings, but is
not necessary. Avoid any type of lubricants, including silicone, on red or clear lip seals.
Do not use pipe dope or other sealants on threads. Plumber’s tape must be used on the threads of the 1” NPT inlet and outlet and on the threads
for the drain line connection. Plumber’s tape is not used on the nut connections or caps because “O” Ring seals are used. The nuts and caps are
designed to be unscrewed or tightened by hand or with the special plastic Service Wrench, #100249864 (CV3193-02). If necessary, pliers can be used
to unscrew the nut or cap. Do not use a pipe wrench to tighten nuts or caps. Do not place screwdriver in slots on caps and/or tap with a hammer.
SITE REQUIREMENTS
• Water pressure – 25-100 psi • Current draw is 0.5 amperes
• Water temperature – 33-100°F (0.5-37.7°C) • The plug-in transformer is for dry locations only
• Electrical – 115/120V, 60Hz uninterrupted outlet
INSTALLATION
1. The distance between the drain and the water conditioner should be as short as possible (see #8).
2. The media tank should be installed on a firm, level surface (above or below grade).
3. It is NOT recommended to install any water treatment unit with less than 10 feet of piping between its outlet and the inlet of a water heater.
CAUTION: To protect the unit in the event of a hot water heater backup, the manufacturer recommends the use of an expansion tank
on the outlet side of the unit (see diagram).
4. Do not locate unit where it or its connections (including the drain and overflow lines) will ever be subjected to temperatures under 33°F.
5. Do not subject the tank to any vacuum as this may cause an “implosion” and could result in leaking. If there is a possibility a vacuum could
occur, please make provision for a vacuum breaker in the installation.
6. INLET/OUTLET PLUMBING: Be sure to install Bypass Valve onto main control valve before beginning plumbing. If it is desired to
bypass outside hydrants, a cold water kitchen sink, or other locations, provisions should be made at this time. Install an inlet shutoff
valve and plumb to the unit’s bypass valve inlet located at the right rear as you face the unit. There are a variety of installation fittings
available. They are listed under the Installation Fitting Assemblies section of the manual. When assembling the installation fitting package
(inlet and outlet), connect the fitting to the plumbing system first and then attach the nut, split ring and “O” Ring. Heat from soldering
or solvent cements may damage the nut, split ring or “O” Ring. Solder joints should be cool and solvent cements should be set before
installing the nut, split ring and “O” Ring. Avoid getting solder flux, primer, and solvent cement on any part of the “O” Rings, split rings, bypass
valve or control valve. If the building’s electrical system is grounded to the plumbing, install a copper grounding strap from the inlet to the outlet
pipe. Plumbing must be done in accordance with all applicable local codes.
When installing an air regenerating filter the customer may experience, under certain conditions, small
amounts of air (cloudy water) at the taps. This is normal. On rare occasions, this may result in “shots of
air” at a particular fixture. By installing a loop or “U” on the outlet side of the unit, this will act as an air
trap and improve this situation.
An internal check valve is located inside the inlet on air filtration units (see diagram at right). This check
valve holds the air in the system, preventing its escape from the tank. Plumbing codes may require the
installation of a thermal expansion tank on the outlet side of the system to prevent a water heater backup
condition.
WELL WATER INSTALLATION MUNICIPAL INSTALLATION
COLD
HOT
EXPANSION
TANK
SHUTOFF
VA LV E
MAY NOT
BE REQUIRED
GROUND
STRAP
10 FEET
OUTSIDE TA P
WATER SUPPLY
TO
DRAIN
WATER
HEATER
PRESSURE
TANK
O
V
E
R
H
E
A
D
V
I
E
W
O
F
B
Y
P
A
S
S
V
A
L
V
E
OUT
IN
COLD
HOT
EXPANSION
TANK
SHUTOFF
VA LV E
GROUND
STRAP
MAY NOT
BE REQUIRED
10 FEET
OUTSIDE TA P
WATER SUPPLY
WATER
METER
TO
DRAIN
WATER
HEATER
O
V
E
R
H
E
A
D
V
I
E
W
O
F
B
Y
P
A
S
S
V
A
L
V
E
OUT
IN

6
TYPICAL DRAIN LINE INSTALLATIONS
INSTALLATION
1. Floor Drain 2. Standpipe 3. Laundry Tub
Provisions should be made to bypass outside hydrants that are not to have filtered water. It is also advisable to install hose bibs on the inlet
and outside of the filter for future testing and service of the equipment. Where heavy sediment from the well is observed, it is advisable
to install a cartridge or bag-style filter immediately upstream from the filter. A nominal micron rating of 50 to 100 is recommended. The
purpose of this is to protect the control valve of any debris from the well. If desired, a cartridge filter may be used after the system as a
polishing filter.
7. INSTALLING GROUND: To maintain an electrical ground in metal plumbing of a home’s cold water piping
(such as a copper plumbing system), install a ground clamp or jumper wiring.
NOTE: If replacing an existing unit, also replace the ground clamps/wire. If removing a unit, replace the
piping with the same type of piping as the original to assure plumbing integrity and grounding.
8. DRAIN LINE: First, be sure that the drain can handle the backwash rate of the system. Solder joints near the
valve must be done prior to connecting the drain line flow control fitting. Leave at least 6” between the drain
line flow control fitting and solder joints. Failure to do this could cause interior damage to the flow control.
Backwash of an automatic filter can be directed into a septic tank in most cases, but because of the higher
volume of water discharged, care should be taken. The backwash discharge can be directed to a subsurface
drainage system or other safe location. Remember to follow all local codes.
When installing the drain line on any backwashing filter, especially filters that utilize air as the regenerant, hard piping such as PVC, Schedule 80
Plastic or copper is recommended. Remove the drain line nut (if included) and discard. A 3/4” NPT connection on the elbow is provided. During
backwash, high volumes of water (more than a softener) and air can be expelled. This release of air can cause a thrashing or movement of the
drain line causing it to dislodge from the drain, resulting in water damage. In order to prevent this, it is recommended to use other means of
securing the drain line to the floor, wall or ceiling to avoid this thrashing of piping. Our patent pending Backwash Air cycle greatly reduces the
chance of this occurring but should not be the only means of protection.
Where the drain line is elevated but empties into a drain below the level of the control valve, form a 7” loop at the discharge end of the line so
that the bottom of the loop is level with the drain connection on the control valve. This will provide an adequate anti-siphon trap. Piping the drain
line overhead <10 ft is normally not a problem. Be sure adequate pressure is available (40-60 psi is recommended). Where the drain empties into
an overhead sewer line, a sink-type trap must be used. Run drain to its discharge point in accordance with plumbing codes. Pay special attention to
codes for air gaps and anti-siphon devices.
CAUTION: Never insert a drain line into a drain, sewer line, or trap. Always allow an air gap of 1-1/2” or twice the pipe diameter, whichever is
greater, between the drain line and the wastewater to prevent the possibility of sewage being back-siphoned into the unit.
SHUTOFF
VA LV E
GROUND
STRAP
GROUND STRAP

6 7
INSTALLATION
9. CHECK VALVE (AIR FILTRATION SYSTEMS ONLY): All air systems include an
internal check valve and screen assembly as part of the air draw system (see diagram at
right). This check valve, screen, and elbow are exclusive to the air system and are not to
be confused or interchanged with a brine elbow used on a softener. The gray color of the
elbow indicates use with an air system vs. a black elbow which indicates use with a
water softener.
NOTE: Under certain conditions (finished basements, utility room, etc.) it may
be advisable to disconnect the screen and run a 3/8” line close to a
drain, in case of check valve failure and water leakage.
CAUTION: Check valve may be under pressure and can result in sudden
release of part, causing injury.
In order to replace or remove the check valve from the control valve, it is necessary to
relieve the pressure from the system. Place filter into by-pass mode (Fig. 2 Page 4) and
release pressure by manually stepping through an entire regeneration sequence. This will
adequately release the pressure on the system so the check valve can be serviced. After
servicing, replace part, secure the check valve assembly with the red clip. Open by-pass to
the normal service position (Fig. 1 Page 4).
10. OZONE GENERATOR KIT: In situations where additional cleaning is needed
due to high levels of iron or sulfur bacteria, an Ozone Generator (part # 100349795,
OZ-1-A) may be beneficial. This device produces ozone, a powerful cleaning agent
which is used to help reduce service calls due to nuisance bacteria*. Please consult
with your local dealer or distributor for more information.
*Nuisance bacteria refers to iron and sulfate reducing bacteria which is harmless to human health.
This bacteria can cause slime, taste, and odor issues.
AIR DRAW CHECK VALVE ASSEMBLY
OZONE GENERATOR

8
PROGRAMMING PROCEDURES
1
DAYS BETWEEN REGEN
SET
3
2
REGEN TIME HOUR
AM
SET
12:00
3
REGEN TIME MINUTES
AM
SET
12:00
4
LIGHT NORMALLY
SET
ON
5
Return to general display.
Typically, time of day should only need to be set after extended power outages or when daylight saving time begins or ends or after the battery has
been replaced. If an extended power outage occurs, the time of day will flash on and off indicating that the time should be reset. To set the clock:
STEP 1 – Press the CLOCK button.
STEP 2 – Set the hour of the day using
+ or – buttons. AM/PM toggles after 12. Press NEXT to go to step 3.
STEP 3 – Set the minutes using
+ or – buttons. Press NEXT to go to step 4 or REGEN to return to previous step.
STEP 4 – Set the day of the week using
+ or – buttons. Press NEXT to exit clock setting or REGEN to return to previous step.
1. Set Time of Day
1
TIME HOUR
AM
SET
2:00
TIME MINUTES
AM
SET
2:00
2 3
CURRENT DAY
SET
MON
4
return to general display
TIME OF DAY MON
PM
GPM
2:408
Press NEXT to cycle to the next step or REGEN to return to the previous step.
STEP 1 – Press and hold the NEXT and
+ buttons simultaneously for 3 seconds.
STEP 2 – DAYS BETWEEN REGENERATION (DAY OVERRIDE): Use the
+ or – buttons to adjust the day
override. Adjustable from 1-28 days or OFF. The manufacturer has factory set 3 days as the default.
The Day Override value represents the maximum number of days between regenerations. If any number
is set (1-28 days), a regeneration will be scheduled for that day if the gallon capacity has not been met. If
OFF is set, the unit will only initiate a regeneration once the gallon capacity has been met.
STEP 3 – REGENERATION HOUR: Use the
+ or – buttons to adjust the time of day the unit will regenerate.
AM/PM toggles after 12. The manufacturer has factory set 12:00 A.M. as the default setting which is
recommended for a normal household.
STEP 4 – REGENERATION MINUTES:
Use the + or – buttons to set minutes.
STEP 5 – BACKLIGHT DISPLAY CONTROL: Use the + or – buttons to turn the backlight setting ON or OFF. If unit
is set to OFF, the backlight will turn off after 5 minutes of inactivity. This setting is not available on all
models.
Press NEXT to return to General Display.
2. Programming
Optional
Display

8 9
OZONE GENERATOR PROGRAMMING
ON
OZONE GENERATOR
30:00
MIN
GENERATE OZONE
SET
SET
OFF
GENERATOR ALARM
SET
60:00
MIN
DRAW TIME
SET
1
2
3
4
TIME MINUTES
AM
SET
2:00
Once the ozone generator has been properly installed, it must be turned on and programmed in the controller’s se ngs prior to opera on.
Se ngs for ozone generators takes place in the Service/OEM Filtering level of programming.
To access the Service/OEM Filtering level, the control valve must fi rst be unlocked. Controllers are factory set in the locked posi on to avoid
any unwanted access to programming parameters.
STEP 1 – To unlock the controller, press –, NEXT, +, and then CLOCK in that order. The screen will read “UNLOCK” if the sequence is inputted correctly
from a general operating screen. Following the programming procedures below, re-lock the controller by inputting the same sequence.
STEP 2 – Once unlocked, press and hold the NEXT and – bu ons simultaneously for three seconds to access the "Service/OEM Filtering"
screens below.
1. Unlock Controller
STEP 1 – Press NEXT to advance to the “Draw Time” screen.
On the "DRAW TIME" screen, press and hold the CLOCK and + bu ons simultaneously for three seconds to
access Ozone Generator Se ngs.
STEP 2 – Use the + or – bu ons to select ON. This turns the Ozone Generator on.
STEP 3 – Determine how long the ozone generator will run. The default is 30 minutes. Adjust the me as
needed and press NEXT.
STEP 4 – Use the + or – bu ons to turn alarm ON or OFF. When ON, a SERVICE OZONE message will
display when failure is detected.
2. Programming
1
UNLOCK
TIME MINUTES
AM
SET
2:00
2
4 2
3
1

10
STARTUP INSTRUCTIONS
FLUSHING OF SYSTEM:
To flush the system of any debris and air after installation is complete, please perform the following steps:
1. Rotate bypass handles to the bypass mode (see Fig. 2 of page 4).
2. Turn on inlet water and check for leaks in the newly installed plumbing.
3. Fully open a cold water faucet, preferable at a laundry sink or bathtub without an aerator.
4. Wait two to three minutes or until water runs clear, then turn water off and follow start-up instructions.
System regeneration sequence is in the following order. Some sequence differences may be noticed depending upon
local conditions. (If it is desired to change this sequence, please contact the manufacturer.)
Sequencing for Various Filters:
Air Filters (Iron & Sulfur)
1. Backwash Air
2. Backwash
3. Regenerant Draw Down (Air draw)
4. Return to service
Inch Worm Feature:
Air filter units are programmed with the backwash air cycle
feature (nicknamed “inch worm”). This unique feature allows
for small movements or “inching” of the piston towards
the backwash cycle. As the piston approaches this cycle,
the backwash port opens slightly with each advancement,
allowing air to escape to drain. This cycle is twelve very small
mini steps of the piston which take place twenty seconds
apart. Usually midway between the twelve positions, the
air begins to be released very slowly to the drain in normal
operating conditions.
When first starting up an air sulfur or air iron, it is advised to
step through these positions and go to the normal backwash
cycle in order to fill the unit.
To Advance in Backwash Air Cycle:
1. Pushing the ���� button will advance to each of the twelve
mini steps within the backwash air cycle. While there are
usually twelve steps to this cycle, the valve may make two or
three movements for each step. Wait for these movements
to complete before pressing ���� again.
2. Pushing and holding the ����� button for three seconds
while in the Backwash Air cycle will skip the remaining mini
steps and proceed to the next cycle of regeneration which
is usually Backwash.
The system is now ready for filling with water and for testing for Air Filters.
NOTE: The “filling” sequence below represents the start-up procedure for Air Filters.
Please reference “Sequence for Various Filters” for proper regeneration sequence (shown above).
1. Place the bypass valve into the bypass mode (Fig. 2 on page 4).
2. Press and hold the ����� button until the motor starts. Release button. Put the valve into “BACKWASH” position.
(Please see note above.) Unplug the transformer so that the valve will not cycle to the next position. Open the
inlet handle of the bypass valve very slightly allowing water to fill the tank slowly in order to expel air.
CAUTION: If water flows too rapidly, there will be a loss of media to the drain.
Certain medias such as carbon, or other dry medias, should not be backwashed immediately for extended periods of time. These
medias need to “soak” in the water for a 24-hour period prior to full backwash conditions.
Dry media exposed to water too quickly in backwash will result in media plugging the drain and valve assembly.
3. After the water is flowing steadily to the drain, clear and without the presence of air, slowly open the inlet valve. Restore power and
momentarily press the ����� button to advance the control to the “REGENERANT DRAW DOWN” position.
4. With the bypass still in the diagnostic mode (Fig. 3 on page 4), there should be a slow flow to the drain.
5. Press ����� button in sequence until display returns to “TIME.” Place bypass valve in the normal operating mode
(Fig. 1 on page 4) by opening the outlet bypass handle.
6. CONDITIONING OF MEDIA:
To flush any remaining debris and air from the system again:
1. Turn on a cold water faucet wide open, preferably at a laundry sink or bathtub without an aerator.
2. Wait two to three minutes or until water runs clear, then turn water off.
3. Turn on hot water and check for air, then turn water off after air is discharged.
7. Place unit into regeneration and allow to complete a full cycle. Upon completion, unit will deliver treated water.

10 11
STARTUP INSTRUCTIONS
FLUSHING OF SYSTEM:
To flush the system of any debris and air after installation is complete, please perform the following steps:
1. Rotate bypass handles to the bypass mode (see Fig. 2 of page 4).
2. Turn on inlet water and check for leaks in the newly installed plumbing.
3. Fully open a cold water faucet, preferable at a laundry sink or bathtub without an aerator.
4. Wait two to three minutes or until water runs clear, then turn water off and follow start-up instructions.
System regeneration sequence is in the following order. Some sequence differences may be noticed depending upon
local conditions. (If it is desired to change this sequence, please contact the manufacturer.)
Sequencing for Various Filters:
Air Filters (Iron & Sulfur)
1. Backwash Air
2. Backwash
3. Regenerant Draw Down (Air draw)
4. Return to service
Inch Worm Feature:
Air filter units are programmed with the backwash air cycle
feature (nicknamed “inch worm”). This unique feature allows
for small movements or “inching” of the piston towards
the backwash cycle. As the piston approaches this cycle,
the backwash port opens slightly with each advancement,
allowing air to escape to drain. This cycle is twelve very small
mini steps of the piston which take place twenty seconds
apart. Usually midway between the twelve positions, the
air begins to be released very slowly to the drain in normal
operating conditions.
When first starting up an air sulfur or air iron, it is advised to
step through these positions and go to the normal backwash
cycle in order to fill the unit.
To Advance in Backwash Air Cycle:
1. Pushing the ���� button will advance to each of the twelve
mini steps within the backwash air cycle. While there are
usually twelve steps to this cycle, the valve may make two or
three movements for each step. Wait for these movements
to complete before pressing ���� again.
2. Pushing and holding the ����� button for three seconds
while in the Backwash Air cycle will skip the remaining mini
steps and proceed to the next cycle of regeneration which
is usually Backwash.
The system is now ready for filling with water and for testing for Air Filters.
NOTE: The “filling” sequence below represents the start-up procedure for Air Filters.
Please reference “Sequence for Various Filters” for proper regeneration sequence (shown above).
1. Place the bypass valve into the bypass mode (Fig. 2 on page 4).
2. Press and hold the ����� button until the motor starts. Release button. Put the valve into “BACKWASH” position.
(Please see note above.) Unplug the transformer so that the valve will not cycle to the next position. Open the
inlet handle of the bypass valve very slightly allowing water to fill the tank slowly in order to expel air.
CAUTION: If water flows too rapidly, there will be a loss of media to the drain.
Certain medias such as carbon, or other dry medias, should not be backwashed immediately for extended periods of time. These
medias need to “soak” in the water for a 24-hour period prior to full backwash conditions.
Dry media exposed to water too quickly in backwash will result in media plugging the drain and valve assembly.
3. After the water is flowing steadily to the drain, clear and without the presence of air, slowly open the inlet valve. Restore power and
momentarily press the ����� button to advance the control to the “REGENERANT DRAW DOWN” position.
4. With the bypass still in the diagnostic mode (Fig. 3 on page 4), there should be a slow flow to the drain.
5. Press ����� button in sequence until display returns to “TIME.” Place bypass valve in the normal operating mode
(Fig. 1 on page 4) by opening the outlet bypass handle.
6. CONDITIONING OF MEDIA:
To flush any remaining debris and air from the system again:
1. Turn on a cold water faucet wide open, preferably at a laundry sink or bathtub without an aerator.
2. Wait two to three minutes or until water runs clear, then turn water off.
3. Turn on hot water and check for air, then turn water off after air is discharged.
7. Place unit into regeneration and allow to complete a full cycle. Upon completion, unit will deliver treated water.
OPERATING DISPLAYS AND MAINTENANCE
The air sulfur and air iron filter systems look and function much like any backwashing whole house filter; however, unlike these conventional filters,
they use air as a regenerant. This atmospheric air (containing oxygen) helps convert iron or hydrogen sulfide into particles. These filters capture the
particles of iron or hydrogen sulfide gas within the filter media. Your dealer has recommended the proper media depending on your local water
conditions. In some cases where an acidic water condition (low pH) is present, the media may need to be periodically replenished if using this filter
to raise the pH to an acceptable level. Consult dealer for this service. The system is pre-factory set to regenerate every (3) three days at midnight.
The frequency and start time of backwash/regeneration is adjustable to meet local operating conditions and contaminant levels. Total backwash and
recharge time may vary between one half hour to one hour and fifteen minutes depending on the unit configuration
1. GENERAL OPERATION: When the system is operating, one of five displays may be shown and will alternate with the installing dealer’s name
and phone number for future service. Pressing NEXT will alternate between the displays.
1. Time of Day Screen: Displays the current time of day, the day of the week, and flow rate.
2. Flow Rate Screen: Displays the current treated water flow rate through the system in Gallons Per Minute.
3. Capacity Remaining Screen: Displays the amount of gallons of treated water remaining until the system triggers a regeneration.
4. Days to a Regen Screen: Displays the number of days until the system triggers a regeneration. Based on the days override value.
5. Dealer Name Screen: Displays dealer specific name and phone number. This scrolling display will only appear if set by the dealer.
If the system has called for a regeneration that will occur at the preset time of regeneration, the words “REGEN TODAY” will appear on the display.
If a water meter is installed, “GPM” flashes on the display when water is being treated, indicating gallons per minute flowing through the system.
2. REGENERATION MODE: Typically, a system is set to regenerate at a time of no water usage.
If there is a demand for water when the system is regenerating, untreated water will be delivered.
When the system begins to regenerate, the display will include information about the step of the
regeneration process and the time remaining for that step to be completed. The system runs through
the steps automatically and will reset itself to provide treated water when the regeneration has been
completed.
3. MANUAL REGENERATION: Sometimes there may be a need to regenerate a unit before the control
valve calls for it. This may be needed if a period of heavy water use is anticipated.
• To initiate a manual regeneration at the next preset regeneration time, press and release the
REGEN button. The words “REGEN TODAY” will flash on the display to indicate that the system
will regenerate at the scheduled regeneration time (see the Programming Procedures section). If
you pressed the REGEN button in error, pressing and releasing the button again will cancel the
command.
• To initiate a manual regeneration immediately, press and hold the REGEN button for three seconds. The system will begin to regenerate
immediately. This command cannot be canceled.
Once a manual regeneration is initiated, the unit will enter the first regeneration cycle position. Once the unit advances to its first position and
subsequent positions thereafter, (see Start Up Instructions for regeneration sequence)
the water filter will deliver water, but it will be untreated.
REGENERATION MODE
BACKWASH
8:22
Current Regen
Cycle Stage
Time Remaining
in Stage
1
FLOW RATE
GPM
8.0
CAPACITY REMAINING
2
5
TIME OF DAY MON
PM
GPM
2:408
GAL
GPM
16008
GPM
38
3
DAYS TO A REGEN
4
555 5555555
DEALER NA
MANUAL REGEN
REGEN TODAY MON
GPM
2:408
PM
REGEN TODAY and TIME OF DAY
will ash alternately if a regeneration
is expected tonight.

12
4. POWER LOSS AND BATTERY REPLACEMENT: If an extended power outage occurs, the control
valve will retain the time of day settings until the board’s battery is depleted. Once the battery
is depleted, the display will appear dark and absent of any information. If this occurs, following
these steps will determine if the problem is a low battery or a board failure.
To determine if the battery is depleted:
1. Remove valve cover. Disconnect power from PC Board at the four pin connector at the
bottom of the board.
2. Wait five minutes for board to de-energize. Remove battery with a non-conductive/non-
metallic material. Reference the Parts Breakdown section of this manual for location.
3. Wait five minutes for board to de-energize.
4. With the battery out, re-connect the power supply to the board. The board’s display
should begin to show information.
This indicates that the board is operating correctly. If the display does not work,
call installing dealer for service.
5. To replace with new battery, unplug transformer from outlet. Install a 3 volt Lithium
Coin Cell type 2032 battery, available at most stores. Plug unit back into outlet.
It is important to replace the battery with the valve unplugged to avoid causing a short
and potentially ruining the board.
6. Reset the time of day (see programming procedures) and initiate regeneration (see operating
displays and maintenance).
If these procedures do not remedy the problem, please consult the installing dealer for
service.
5. ERROR MESSAGE: If the word “ERROR” appears and flashes alternately with the dealer name and
phone number, record the ERROR number and contact your servicing dealer promptly. This indicates that
the control valve was not able to function properly.
OPERATING DISPLAYS AND MAINTENANCE
ERROR
106
CALL FOR SERVICE
OZONE GENERATOR MAINTENANCE
For op mal performance, it is necessary to perform yearly maintenance on the fi lter and ozone generator in use by replacing the ozone
check valve and injector. Failure of the check valve may result in water fl owing to the ozone generator. This may, in turn, result in the failure
of the generator and cause water damage to the surrounding area.
When three consecu ve regenera ons occur where the recorded amperage of the generator is below 200mA
or above 400mA, the generator will signal an alarm and will require maintenance. A “Service Ozone” indicator
will appear on the screen of the valve controller which signals that a cell needs replacement or a potentiometer
adjustment. This maintenance should be performed by the servicing dealer. Follow the instruc ons below to
determine the cause behind an Ozone Generator alarm.
1. CHECK OZONE HISTORY
When on and func oning correctly, the valve controller records a snapshot of the voltage and amperage
of the ozone generator for the past 50 regenera ons. It is important to check these sta s cs to determine
how the generator was performing prior to the alarm being triggered. These stats can be accessed via the
fi rst-level history area of the controller programming. To access it:
1. From a general opera ng screen, press and hold the + and – bu ons simultaneously for three seconds.
2. Once the screen changes, press NEXT un l the Ozone Generator history screen displays. NOTE: If the
Ozone Generator History screen does not display, ensure that the ozone generator has been turned on in
the programming.
3. Use the + or – bu ons to view ozone generator performance during the last 50 regenera ons. A regen
sequence indicator (A) will alternate being viewed with “mA” if the Alternate Regen Feature was ac ve for
this regen. Regens with mul ple regenerate draws will only record the fi rst one in the sequence.
The normal opera ng amperage should be between 220mA and 260mA. The normal opera ng voltage
should be between 12.0 and 12.1. When viewing the generator history, be aware of these values and note
any anomalies.
SERVICE OZONE SCREEN
SERVICE OZONE
TIME OF DAY MON
GPM
2:408
PM
DAYS SINCE REGEN
5
mA VDC
REGEN 1
OZONE
260 12.0
BATTERY REPLACEMENT
ERROR SCREEN

12 13
OZONE GENERATOR MAINTENANCE
2. ADJUST THE POTENTIOMETER
If the recorded amperage or voltage is outside of normal levels, the poten ometer may need to be adjusted. This dial is accessible on the
back of the ozone generator unit once removed from its enclosure and can be adjusted using a screwdriver. To access and adjust, follow the
steps below.
1
4
1. Remove the cover of the ozone generator enclosure by pulling it upward.
2. Locate the Poten ometer on the back of the generator internals. Using a screwdriver,
turn the poten ometer dial fully clockwise. The poten ometer dial controls the amount
of amperage being supplied from the board to the generator. Turning it fully clockwise will
supply the lowest amperage to the generator.
3. On the controller, press and hold the REGEN bu on un l a manual regenera on
is ini ated. Press the REGEN bu on to cycle through regenera on steps un l the
“Regenerant Draw Down (Air-Draw)” step is reached.
4. Wait on the “Regenerant Draw Down” Screen for ten seconds. Press and hold the UP
and DOWN bu ons for three seconds to reach the “Ozone generator live-view” screen.
5. The live-view screen provides a live reading of the amperage and voltage being
supplied to the generator. The ozone generator should read between 220mA-260mA
and 12.0VDC-12.1VDC. Using a screwdriver, gently turn the poten ometer dial counter-
clockwise. Con nue to turn the dial un l the amperage is within the 220mA-260mA
range. Confi rm that the voltage reading is either 12.0 or 12.1.
NOTE: Turning the dial too far in the counter-clockwise posi on can force the generator
to shut down (399mA or over). If this occurs, the controller screen will appear frozen.
Press and hold the NEXT and REGEN bu ons for three seconds to reboot the board. Once
the controller reboots, return to STEP 3 and con nue.
6. Once the amperage and voltage are within acceptable ranges, press the
NEXT bu on on the controller to exit the live-view. Replace the enclosure
cover.
• If successful, the unit will resume normal opera on and the alarm will
cease.
• If moisture is suspected to have aff ected the cell, such as with a check
valve failure or the result of environmental condi ons, leave the cell to
dry by resuming normal opera on. In some cases, the electrical current
running through the cell can dry it, restoring it to its normal func onality.
• If the alarm con nues a er three consecu ve regenera ons, it is advised
to replace the cell.
5
2
3
TIME OF DAY MON
GPM
2:408
PM
BACKWASH
10:00
REGENERANT DRAW DN
60:00
Press and Hold Until
Regeneration Starts
Press to Move Through
Regeneration Cycles
mA VDC
GENERATOR
260 12.0
REGENERANT DRAW DN
59:50
mA VDC
GENERATOR
260 12.0

14
1. Disconnect the unit from power by unplugging the 110V transformer from its
power supply.
2. Remove the cover of the ozone generator enclosure.
3. Remove the ozone generator internal components from the enclosure. Flip
internals over to reveal a screw on the back. Using a screwdriver, remove and set
aside the screw and the cell clip.
4. Detach the current ozone cell from the generator by pulling connectors apart and
removing it from the cell clip by pulling away from the generator.
5. A ach new cell to the wire connectors and insert it into the clip. Re-a ach the
cell clip and replace the enclosure cap.
6. Reconnect the 110V transformer to its power supply.
OZONE GENERATOR MAINTENANCE
3. REPLACE THE CELL
Over me, the ozone generator cell will become clogged with debris, will lose its genera ng capabili es, and will require replacement. If
adjus ng the poten ometer does not solve an ozone alarm issue, replacing the cell is necessary.
1
4
2
3
3
4. REPLACE THE OZONE CHECK VALVE AND INJECTOR
Replacement of the check valve and the injector is required yearly for op mal performance of the ozone generator and fi lter. This yearly
maintenance also prevents check-valve related failure, which can cause signifi cant water damage to the fi ltra on unit and the area
surrounding it.
1. Using a service wrench, loosen and remove the injector cap.
2. Pull out and dispose of the exis ng injector. Install the replacement.
3. Loosen the nut and remove the hose connected to the exis ng air-
check elbow.
4. Remove the red clip and pull upwards on the air-draw elbow to
remove it. Install the new air-draw elbow by pushing it down into the
port and inser ng the red clip un l it clicks.
4

14 15
MAINTENANCE LOG
Date Ozone mA
Check Valve/Air
Draw Elbow
Injector
OZONE GENERATOR MAINTENANCE

16
For Automatic Backwash Filters With Dome Hole
1. Check the media height by shining a flashlight through the tank to see
the height of the mineral. If the level is not visible, the top fill plug will have to be
removed (if available) to measure the height. The media tank should only be two-
thirds full (see diagram). Proceed to step 2.
2. To remove top fill plug, turn off the source of the water and open a conditioned
water tap to relieve the water pressure on the system. Place unit into the bypass
mode. Unscrew the top fill plug.
Caution: Never unscrew top fill plug unless pressure is fully released from
system. Serious injury and/or flooding can occur.
3. Siphon out some water from the tank through the dome hole. This will allow room
when adding the media.
4. Add the appropriate amount of replacement media through the dome hole (top fill
plug). Make sure you add the correct amount and type of media (calcite or calcite/
corosex mix). If needed, siphon out more water as the media will displace the water
inside the tank. Pay close attention to media level when filling (see diagram).
Do not overfill. The additional media added should not be higher than two-thirds
of the tank height when measuring from the bottom (see diagram). Once the right
height has been achieved, replace top fill plug. Grease “O” ring if necessary using
only silicone grease.
Do not use petroleum based grease such as Vaseline. Tighten appropriately.
5. Leaving controller in the bypass position, turn on water source and refer to the
start-up instructions of the controller and complete the procedure.
6. Once start up is complete, please check the top fill plug for any leaking.
REPLACEMENT MINERAL INSTRUCTIONS
FOR ACID NEUTRALIZERS
Dual Gravel
Under Bedding
Distributor System
Acid Neutralizing Media
Optional Top Fill Plug
100243086 - CQ7006 - Enpress Style
100343241 - CD1338-01 - Clack Style
Fill Level: ²∕
³
of tank
Acid Neutralizers raise the pH of mildly acidic water. The raising of pH utilizes a sacrificial mineral that will need replenishment every 6 to
12 months. Typically the media should not be below the halfway point in the tank. In order to check the mineral height and before adding
mineral to the system, please follow these instructions.

16 17
This page intentionally left blank.

18
PROBLEM CAUSE CORRECTION
1. No display on
PC board.
A. Depleted battery. A. See Operating Display and Maintenance section.
B. Control valve power adapter not plugged into outlet
or power cord end not connected to PC board
connection.
B. Plug power adapter into outlet or connect
power cord end to PC board connection.
C. Improper power supply.
C. Verify proper voltage is being delivered to
PC board.
D. Defective power adapter. D. Replace power adapter.
E. Defective PC board. E. Replace PC board.
F. No power at electric outlet.
F. Repair outlet or use working outlet.
2. PC board does not
display correct time
of day.
A. Power adapter plugged into electric outlet controlled
by light switch.
A. Use uninterrupted outlet.
B. Tripped breaker switch and/or tripped GFI. B. Reset breaker switch and/or GFI switch.
C. Power outage.
C. Reset time of day. If PC board has battery
back up present the battery may be depleted. See
front cover and drive assembly drawing
for instructions.
D. Defective PC board. D. Replace PC board.
3. Display does not
indicate that water is
flowing. Refer to user
instructions for how
the display indicates
water is flowing.
A. Bypass valve in bypass position.
A. Turn bypass handles to place bypass in
service position.
B. Meter is not connected to meter connection on PC
board.
B. Connect meter to three pin connection labeled
METER on PC board.
C. Restricted/stalled meter turbine.
C. Remove meter and check for rotation or
foreign material.
D. Meter wire not installed securely into three
pin connector.
D. Verify meter cable wires are installed securely into
three pin connector labeled METER.
E. Defective meter. E. Replace meter.
F. Defective PC board. F. Replace PC board.
4. Control valve
regenerates at wrong
time of day.
A. Power outage.
A. Reset time of day. If PC board has battery
back up present the battery may be depleted. See
front cover and drive assembly drawing
for instructions.
B. Time of day not set correctly. B. Reset to correct time of day.
C. Time of regeneration set incorrectly. C. Reset regeneration time.
D. Control valve set at immediate regeneration.
D. Check programming setting and reset to DELAYED
(for a delayed regen time).
5. Time of day flashes on
and off.
A. Power outage.
A. Reset time of day. If PC board has battery
back up present the battery may be depleted. See
front cover and drive assembly drawing
for instructions.
6. Control valve does
not regenerate
automatically when
the correct button(s) is
pressed and held.
For timeclock valves
the buttons are
+ or –.
For all other valves the
button is REGEN.
A. Broken drive gear or drive cap assembly. A. Replace drive gear or drive cap assembly.
B. Broken piston rod. B. Replace piston rod.
C. Defective PC board. C. Defective PC board.
D. Cover installed incorrectly. D. Reinstall cover.
TROUBLESHOOTING GUIDE

18 19
7. Control valve does
not regenerate
automatically but
does when the correct
button(s) is depressed
and held. For
timeclock valves the
buttons are
+ or –.
For all other valves the
button is REGEN.
A. Bypass valve in bypass position.
A. Turn bypass handles to place bypass in
service position.
B. Meter is not connected to meter connection on PC
board.
B. Connect meter to three pin connection labeled
METER on PC board.
C. Restricted/stalled meter turbine.
C. Remove meter and check for rotation or
foreign material.
D. Incorrect programming. D. Check for programming error.
E. Meter wire not installed securely into three
pin connector.
E. Verify meter cable wires are installed securely into
three pin connector labeled METER.
F. Defective meter. F. Replace meter.
G. Defective PC board. G. Replace PC board.
8. Hard or untreated
water is being
delivered.
A. Bypass valve is open or faulty. A. Fully close bypass valve or replace.
B. Media is exhausted due to high water usage.
B. Check program settings or diagnostics for abnormal
water usage.
C. Meter not registering.
C. Remove meter and check for rotation or
foreign material.
D. Water quality fluctuation.
D. Test water and adjust program
values accordingly.
E. No regenerant or low level of regenerant in
regenerant tank.
E. Add proper regenerant to tank.
F. Control fails to draw in regenerant. F. Refer to Troubleshooting Guide number 12.
G. Insufficient regenerant level in regenerant tank.
G. Check refill setting in programming. Check refill
flow control for restrictions or debris and, if
necessary, replace.
H. Damaged seal/stack assembly/piston. H. Replace seal/stack assembly and/or piston.
I. Control valve body type and piston type
mix matched.
I. Verify proper control valve body type and
piston type match.
J. Fouled media bed. J. Replace media bed.
9. Control valve uses
too much regenerant.
A. Improper refill setting. A. Check refill setting.
B. Improper program settings.
B. Check program setting to make sure
they are specific to the water quality and
application needs.
C. Control valve regenerates frequently.
C. Check for leaking fixtures that may be exhausting
capacity or system is undersized.
10. Residual regenerant
being delivered to
service.
A. Low water pressure.
A. Check incoming water pressure – water pressure
must remain at minimum of 25 psi.
B. Incorrect, damaged, or restricted injector.
B. Replace injector with correct size for
the application.
C. Restricted drain line.
C. Check drain line for restrictions or debris
and remove any obstructions.
11. Excessive water in
regenerant tank.
A. Improper program settings. A. Check refill setting.
B. Plugged injector. B. Remove injector and replace.
C. Drive cap assembly not tightened in properly. C. Re-tighten the drive cap assembly.
D. Damaged seal/stack assembly/piston. D. Replace seal/stack assembly and/or piston.
E. Restricted or kinked drain line.
E. Check drain line for restrictions or debris and or
unkink drain line.
F. Plugged backwash flow controller.
F. Remove backwash flow controller and replace, if
necessary.
G. Missing refill flow controller. G. Install refill flow controller.
H. Brine tube not inserted properly into brine elbow in
brine tank.
H. Install tube all the way into elbow.
PROBLEM CAUSE CORRECTION
TROUBLESHOOTING GUIDE

20
TROUBLESHOOTING GUIDE
12. Control valve fails to
draw in regenerant.
A. Injector is plugged. A. Remove injector and replace.
B. Faulty regenerant piston. B. Replace regenerant piston.
C. Regenerant line connection leak. C. Inspect regenerant line for air leak.
D. Drain line restriction or debris cause excess back
pressure.
D. Inspect drain line and remove to
correct restriction.
E. Drain line too long or too high. E. Shorten length and or height.
F. Low water pressure.
F. Check incoming water pressure – water
pressure must remain at minimum of 25 psi.
13. Water running to
drain.
A. Power outage during regeneration.
A. Upon power being restored control will finish
the remaining regeneration time. Reset time of
day. If PC board has battery back up present the
battery may be depleted. See front cover and drive
assembly drawing for instructions.
B. Damaged seal/stack assembly. B. Replace seal/stack assembly.
C. Piston assembly failure. C. Replace piston assembly.
D. Drive cap assembly not tightened in properly. D. Re-tighten the drive cap assembly.
14. E1, Err – 1001,
Err – 101 =
Control unable
to sense motor
movement.
A. Motor not inserted full to engage pinion, motor
wires broken or disconnected.
A. Disconnect power, make sure motor is fully engaged,
check for broken wires, make sure
two pin connector on motor is connected to the two
pin connection on the PC board labeled MOTOR.
Press NEXT and REGEN buttons for
3 seconds to resynchronize software with piston
position or disconnect power supply from PC board
for 5 seconds and then reconnect.
B. PC board not properly snapped into drive bracket.
B. Properly snap PC board into drive bracket and
then Press NEXT and REGEN buttons for 3 seconds
to resynchronize software with piston position
or disconnect power supply from PC board for 5
seconds and then reconnect.
C. Missing drive gears. C. Replace missing gears.
D. Motor does not drive/run. D. Replace motor.
E. Viewing eye or encoder is blocked or damaged.
E. clear viewing eye on board, on drive bracket, or
replace PC board if no debris is found.
15. E2, Err – 1002,
Err – 102 = Excessive
Motor Draw.
A. Foreign material is lodged in control valve.
A. Open up control valve and pull out piston assembly
and seal/stack assembly for inspection. Press NEXT
and REGEN buttons for
3 seconds to resynchronize software with piston
position or disconnect power supply from PC board
for 5 seconds and then reconnect.
B. Mechanical binding.
B. Check piston and seal/stack assembly, check
reduction gears, check drive bracket and main drive
gear interface. Press NEXT and REGEN buttons for
3 seconds to resynchronize software with piston
position or disconnect power supply from PC board
for 5 seconds and then reconnect.
C. Drive cap too loose. C. Completely tighten drive cap assembly.
D. Drive cap not “clicked” into backplate.
D. Verify that backplate is properly “clicked” into
place.
PROBLEM CAUSE CORRECTION

20 21
16. E3, Err – 1003,
Err – 103 = Control
valve motor ran
too long and was
unable to find the
next cycle position.
A. Drive bracket not snapped in properly and out
enough that reduction gears and drive gear do not
interface.
A. Snap drive bracket in properly then Press
NEXT and REGEN buttons for 3 seconds to
resynchronize software with piston position
or disconnect power supply from PC board
for 5 seconds and then reconnect.
17. E4, Err – 1004,
Err – 104 = Control
valve motor ran too
long and timed out
trying to reach home
position.
A. Drive bracket not snapped in properly and out enough
that reduction gears and drive gear do
not interface.
A. Snap drive bracket in properly then Press
NEXT and REGEN buttons for 3 seconds to
resynchronize software with piston position
or disconnect power supply from PC board
for 5 seconds and then reconnect.
B. Piston not connected to drive cap. B. Connect or replace (if damaged) piston/drive cap.
18. Err – 1006, Err – 106,
Err – 116 = MAV/
SEPS/ NHBP/ AUX
MAV valve motor
ran too long and
unable to find
the proper park
position.
●Motorized Alternating Valve = MAV
●Separate Source = SEPS
●No Hard Water Bypass = NHBP
●Auxiliary MAV = AUX MAV
A. Control valve programmed for ALT A or B,
nHbP, SEPS, or AUX MAV with out having
a MAV or NHBP valve attached to operate
that function.
A. Press NEXT and REGEN buttons for 3 seconds
to resynchronize software with piston position
or disconnect power supply from PC board for
5 seconds and then reconnect. Then reprogram valve
to proper setting.
B. MAV/NHBP motor wire not connected to
PC board.
B. Connect MAV/NHBP motor to PC board two pin
connection labeled DRIVE. Press NEXT and REGEN
buttons for 3 seconds to resynchronize software
with piston position or disconnect power supply
from PC board for 5 seconds
and then reconnect.
C. MAV/NHBP motor not fully engaged with reduction
gears.
C. Properly insert motor into casing, do not force into
casing Press NEXT and REGEN buttons for
3 seconds to resynchronize software with piston
position or disconnect power supply from PC board
for 5 seconds and then reconnect.
D. Foreign matter built up on piston and stack
assemblies creating friction and drag enough
to time out motor.
D. Replace piston and stack assemblies. Press NEXT
and REGEN buttons for 3 seconds to resynchronize
software with piston position
or disconnect power supply from PC board
for 5 seconds and then reconnect.
19. Err – 1007, Err –
107, Err – 117 =
MAV/ SEPS/NHBP/
AUX MAV valve
motor ran too short
(stalled) while
looking for proper
park position.
●Motorized Alternating Valve = MAV
●Separate Source = SEPS
●No Hard Water Bypass = NHBP
●Auxiliary MAV = AUX MAV
A. Foreign material is lodged in
MAV/NHBP valve.
A. Open up MAV/NHBP valve and check piston and
seal/ stack assembly for foreign material. Press NEXT
and REGEN buttons for 3 seconds
to resynchronize software with piston position
or disconnect power supply from PC board for
5 seconds and then reconnect.
B. Mechanical binding.
B. Check piston and seal/stack assembly, check
reduction gears, drive gear interface, and check
MAV/NHBP black drive pinion on
motor for being jammed into motor body.
Press NEXT and REGEN buttons for 3 seconds to
resynchronize software with piston position or
disconnect power supply from PC board for 5
seconds and then reconnect.
PROBLEM CAUSE CORRECTION
TROUBLESHOOTING GUIDE

22
PROBLEM CAUSE CORRECTION
20. Err – 201
200 errors are only
viewable in history
screens. These do not
flash when error occurs.
A. Invalid regeneration cycle step detected. A. Replace PC board.
21. Err – 202
200 errors are only
viewable in history
screens. These do not
flash when error occurs.
A. Short power disruption. A. Check transformer voltage and verify power source.
B. Foreign material dislodged. B. Check piston and stack for damage.
22. Err – 204 = Leak
detected
200 errors are only
viewable in history
screens. These do not
flash when error occurs.
A. Occurs when dP input is active for “ALARM” and the
input is closed. The alarm buzzer will activate and the
screen will display the error.
A. Check for low flow leak. Press NEXT and REGEN
buttons for 3 seconds to resynchronize software
with piston position or disconnect power supply
from PC Board for 5 seconds
and then reconnect to clear error.
23. Err – 400
*
Memory Errors
*All 400 errors pertain to
memory related errors.
400 and 200 errors are
only viewable in history
screens. These do not
flash when error occurs.
A. Depleted Battery. A. See Operating Display and Maintenance section.
B. Defective PC Board. B. Replace PC board.
TROUBLESHOOTING GUIDE

22 23
REPLACEMENT PARTS
NOTE: Battery Location
1
2
3
5
6
4
FRONT COVER AND DRIVE ASSEMBLY
Item # Legacy Part # Current Part # Description Qty.
1 CV4637-01 100379001 Valve cover 1
2 CV3107-1 100246273 Motor Assembly 1
3 CV3002-A 100246193 Drive assembly (includes #5 and #6) —
4 CV4229XP-03 100243791 PC board 1
5 CV3110 100246279 Drive gear, 12 x 36 3
6 CV3109 100246278 Drive gear cover 1
not
shown
CV3186-06 100249863 Transformer, 110V-12V, AC (standard) 1

24
6
7
REPLACEMENT PARTS
PISTON ASSEMBLY
Item # Legacy Part # Current Part # Description Qty.
1
CV3005-02 100249844 1” spacer stack assembly 1
CV3430-01 100249865 1.25” spacer stack assembly 1
2 CV3004 100246196 Drive cap assembly 1
3 CV3135 100246281 O-ring 228 (drive cap o-ring) 1
4
CV3011 100246232 1” piston assembly downflow 1
CV3011-01 100246233 1” piston assembly upflow 1
CV3407 100243924 1.25” piston assembly downflow 1
5 CV3174 100246296 Regenerant piston 1
6
CV3001-04 100244557 1” body assembly downflow 1
CV3001-04UP 100243827 1” body assembly upflow 1
CV3020 100246239 1.25” body assembly downflow 1
7 CV3541 100249867 Drive backplate 1
Not
Shown
CD1225-05 100249834 Top basket softener (optional)
CD1249WR 100245766 Top basket filter
OV32 DN32 100248209 Internal check valve

24 25
NOTE: Only Used on
Fusion Filter Systems
1
REPLACEMENT PARTS
3
2
1
BRINE ELBOW ASSEMBLY
Item # Legacy Part # Current Part # Description Qty.
1 CV3195-01 100246323 Refill port plug assembly 1
2 CV3163 100246291 O-ring 019 1
3 CH4615 100245862 Elbow locking clip 1
CHECK VALVE ASSEMBLY
Item # Legacy Part # Current Part # Description Qty.
1 CH4642-WR-A 100243963 Air check valve assembly 1
BYPASS VALVE
Item #. Legacy Part # Current Part # Description Qty.
1 CV3006 100249845 Bypass assembly 1
2 CV3147 100246284 Bypass handles 2
Although no tools are necessary to assemble or disassemble the
valve, the Service Wrench, (shown in various positions on the valve)
is available to aid in assembly or disassembly.
SERVICE WRENCH - 100249864 (CV3193-02)

26
INJECTOR ASSEMBLIES
Item # Legacy Part # Current Part # Description Qty.
1 CV3176-01 100246304 Injector cap 1
2 CV3152 100244507 O-ring 135 1
3 CV3177-01 100246305 Injector screen 1
4 CV3010-1Z 100246221 Injector assembly plug 1
5
CV3010-1F 100246215 F injector assembly, ����
CV3010-1G 100246216 G injector assembly, ������
*The injector plug and the injector each use one lower and one upper O-ring.
REPLACEMENT PARTS
3
1
2
WATER METER AND METER PLUG
Item # Legacy Part # Current Part # Description Qty.
1 CV3151 100246287 Nut, 1” Quick Connect 1
2 CV3003-05 100253284 Meter assembly 1
3 CV3003-01 100246195 Meter plug assembly 1

26 27
Water
Flow
5
8
Drain
Line
1”
4
6
7
Proper DLFC orientation
directs water flow towards
the washer face with
rounded edge.
3
1
2
2
REPLACEMENT PARTS
Water flow
Proper DLFC orientation
directs water flow towards
the washer face with
rounded edge.
2
3
8
5
7
6
1
4
DRAIN LINE ASSEMBLY 1”
Item # Legacy Part # Current Part # Description Qty.
1 CH4615 100245862 Elbow locking clip 1
2
CV3166 100246292 Drain FTG body 1
1
CV3166-01 100246293 FTG flow control body 1
3 CV3163 100246291 O-ring 019 1
4 CV3150 100246286 Split ring 1
5 CV3151 100246287 Nut 1" QC 1
6 CV3105 100246272 O-ring 215
7
CV3190-090 100246313 9.0 gpm DLFC for 1” elbow
One DLFC
must be
used if 1"
fitting is
used
CV3190-100 100246314 10.0 gpm DLFC for 1” elbow
CV3190-110 100246315 11.0 gpm DLFC for 1” elbow
CV3190-130 100246316 13.0 gpm DLFC for 1” elbow
CV3190-150 100246317 15.0 gpm DLFC for 1” elbow
CV3190-170 100246318 17.0 gpm DLFC for 1” elbow
CV3190-200 100246319 20.0 gpm DLFC for 1” elbow
CV3190-250 100246320 25.0 gpm DLFC for 1” elbow
8
CV3008-04 100243824 FTG Drain 1" Strt No/Silencer (Requires DLFC)
1
DRAIN LINE ASSEMBLY 3/4”
Item # Legacy Part # Current Part # Description Qty.
1 CH4615 100245862 Elbow locking clip 1
2 CPKP10TS8-BULK 100245919 Optional insert, 5/8” tube 1
3 CV3192 100246322 Optional nut, 3/4” drain elbow 1
4 CV3158-02 100249851
Drain elbow, 3/4” NPT with
O-ring, w/o silencer
1
5 CV3163 100246291 O-ring 019 1
6 CV3159-01 100246290 DLFC retainer assembly 1
7
CV3162-053 100249856 5.3 DLFC for 3/4” elbow
One DLFC
must be
used if 1"
fitting is
used
CV3162-065 100249857 6.5 DLFC for3/4” elbow
CV3162-075 100249858 7.5 DLFC for 3/4” elbow
8 CV3331A 100245051
Drain elbow and retainer
assembly (requires DLFC)
1
Items 2 and 3, nut and insert are only used with 1/2” I.D. by 5/8” O.D. polytubing.
For other piping material, the 3/4” NPT is used.

28
REPLACEMENT PARTS
IN/OUT HEAD
Item # Legacy Part # Current Part # Description Qty.
CD1400 100245769 1191 In/Out Head 1
Not
Shown
CV3180 100246307 Base O-Ring 1
CV3105 100246272 Distributor Pilot O-Ring 215 1
IN/OUT HEAD W/FILL PORT
Item # Legacy Part # Current Part # Description Qty.
CD1220-01 100245758 1190 In/Out Head W/Port 1
Not
Shown
CV3180 100246307 Base O-Ring 1
CV3105 100246272 Distributor Pilot O-Ring 215 1
CV3135 100246281 O-Ring, Fill Cap 1
4.91
124.7
4.43
112.4
4.14
105
OZONE GENERATOR
Item # Legacy Part # Current Part # Description Qty.
1 OZ1-A-99 100349795
Ozone Kit Assembly with No
Replacement Board
1
1 OZ1-CASE 100174201 Enclosure Top, Bo om, and Clip 1
2 OZ33217-WRP3 100343535 Replacement Cell 1
3 CH4642-WR-A 100243963
Air Draw Elbow/Check Valve
(includes part #4)
1
4 CJCPG-6PBLK 100245902 3/8” Compression Nut 1
5 CJCP-P-4 100245904 1/4” Polypropylene Insert 1
DOME HOLE PLUG
Item # Legacy Part # Current Part # Description Qty.
CQ7006 100243086 Enpress Style Plug 1
CD1338-01 100343241 Clack Style Plug 1
Both Style Plugs Include O-Ring
ENPRESS VERSION
CLACK VERSION
1
2
3
4 5

28 29
Legacy Part # Current Part # Description Qty.
CV3007 100246197
1” PVC male NPT
elbow assembly
2
Legacy Part # Current Part # Description Qty.
CV3007-01 100246198
3/4” & 1” PVC solvent
elbow assembly
2
Legacy Part # Current Part # Description Qty.
CV3007-02 100246199
1” brass sweat
assembly
2
Legacy Part # Current Part # Description Qty.
CV3007-03 100249846
3/4” brass
sweat assembly
2
Legacy Part # Current Part # Description Qty.
CV3007-12 100249847
3/4” brass shark
bite assembly
2
Legacy Part # Current Part # Description Qty.
CV3007-13 100249848
1” brass shark
bite assembly
2
Legacy Part # Current Part # Description Qty.
CV3007-15 100246200
3/4” john guest
elbow assembly
2
Legacy Part # Current Part # Description Qty.
CV3007-17 100245045
1” john guest
assembly
2
Legacy Part # Current Part # Description Qty.
CV3007-09 100243922
1-1/4” & 1-1/2” brass
sweat assembly
2
Legacy Part # Current Part # Description Qty.
CV3007-07 100243375
1-1/4” & 1-1/2” PVC
solvent assembly
2
Legacy Part # Current Part # Description Qty.
CV3007-04 100244506
1” plastic male NPT
assembly
2
Legacy Part # Current Part # Description Qty.
CV3007-05 100243921
1-1/4” plastic male
assembly
2
Item # Legacy Part # Current Part # Description Qty.
1 CV3151 100246287 Nut, 1” quick connect 2
2 CV3150 100246286 Split ring 2
3 CV3105 100246272 O-ring 215 2
NOTE: Not all available fi ttings are
displayed below. Contact
manufacturer for optional
fi ttings.
For All Assemblies
INSTALLATION FITTING ASSEMBLIES

30
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30 31
FILTER SPECIFICATIONS
Backwashing & Air Filters
Specifications
Manufactured by A. O. Smith Water Treatment • 1900 Prospect Court • Appleton, WI, 54914 • aosmith.com/watertreatment
AOS-AOP-BACK FILT SPEC - 100377729 - 2000809236 - Rev1024
Air
Filter
Backwashing
Filter
MODEL APBF-1054 APBF-1054 APBF-1054
Mineral Type
Amount (Cu. Ft.)
Carbon
1.5
Turbidex
1.5
Calcite or Mix
1.5
Continuous Flow (GPM)
5.0 7.0 4.8
Peak Flow (GPM)
9.0 11.0 11.0
Backwash Flow (GPM)
5.3 9.0 5.3
Total Dimensions
10"W x 62"H 10"W x 62"H 10"W x 62"H
Weight:
Unfi lled/Media (Lbs)
66/50 66/75 66/135
MODEL APBF-1054
MIN. GAL.
Backwash
5 27
Rapid Rinse
1 5
Backwash
5 27
Rapid Rinse
4 21
Total 15 80
MODEL
APBF-1054
CARBON
APBF-1054
TURBIDEX
APBF-1054
CALCITE
OR MIX
MIN. GAL. MIN. GAL. MIN. GAL.
Backwash
5 27 5 45 5 27
Rinse
1 5 1 9 1 5
Backwash
5 27 5 45 5 27
Rinse
4 21 4 36 4 21
Width
Height
MODEL APIS-1054
Mineral Type
Amount (Cu. Ft.)
Catalytic Carbon
1.0
Service Flow (GPM)
5.0
1
Peak Flow (GPM)
8.0
Backwash Flow (GPM)
5.3
2
Hydrogen Sulfide/Iron Reduction
5.0
pH Range
Greater than 7.0
Total Dimensions
10"W x 62"H
Weight Filled (Lbs.)
99
Air Filter
1
Not tested at peak fl ow rate. Water quality will vary.
2
Hydrogen Sulfi de and Iron reduc on may vary depending on local
condi ons. A maximum combined total of Hydrogen Sulfi de and Iron
must be 5.0ppm or less.
Width
Height
MODEL APIS-1054
MIN. GAL.
Backwash Air
4 16
Backwash
10 50
Regenerant Draw
60 25
Total 74 91
Backwashing/Acid Neutralizing Filters
Cycle Times & Usage

32
Water Filter Limited Warranty
Congratulations. You have purchased one of the nest water treatment systems available. In the unlikely
event of a problem due to defects in material and workmanship, we proudly warrant our water lters to the
original owner, when installed in accordance with A. O. Smith
®
speci cations. This warranty is effective from
the date of original installation for:
A period of TEN YEARS: Fiberglass mineral tanks 13” and smaller; except for damages
due to freezing, high pressure (120 PSI and above), extreme
temperature (100°F and above) or a vacuum on the system.
A period of FIVE YEARS: Valve Body and PC Board.
Fiberglass mineral tanks 14” and larger.
A period of ONE YEAR: All other lter components.
Any part found defective within the terms of this warranty will be repaired or replaced by the dealer. You pay
only freight from our factory and local dealer charges. To obtain local warranty service, contact original dealer
or an authorized service dealer. If no authorized dealer is located in your area, please ship defective part or
component freight prepaid to A. O. Smith, 1900 Prospect Ct., Appleton, Wisconsin 54914. A. O. Smith, at its
discretion, will repair or replace the part or component at its expense and return part freight collect.
The above provisions of the warranty are valid as long as the unit is connected in compliance with local
plumbing codes and in an equivalent manner and condition of the original installation and is owned by the
original owner.
This warranty does not cover damages due to accident, re, ood, freezing, or any other Act of God.
We are not responsible for damages due to change in water conditions, misapplication, misuse, neglect,
vacuum, oxidizing agents, alteration, or lack of maintenance. No responsibility is assumed for loss of use
of the unit, inconvenience, loss or damage to real or personal property or any incidental or consequential
damages. Furthermore, we assume no liability and extend no warranties, express or implied, for the use
of this product with a non-potable water source. To the extent permitted by law, A. O. Smith disclaims
all implied warranties, including without limitation warranties of merchantability and tness for
particular purpose; to the extent required by law, any such implied warranties are limited in duration
to the aforementioned period speci ed above.
Some states do not allow the exclusion of implied warranties or limitations on how long an implied warranty
lasts. Consequently, the above limitation may not apply to you.
This warranty gives you speci c legal rights, and you may also have other rights which vary from state
to state.

32 33
QUICK REFERENCE GUIDE
MANUAL REGENERATION
NOTE: If you need to initiate a manual regeneration, either immediately, or
the same night at the pre-programmed time for regeneration (typically 2:00
AM), complete the following steps.
For Immediate Regeneration:
Press and hold ����� until valve motor starts (typically 3 seconds).
For Regeneration the same night:
Press and release ����� (notice that flashing “REGEN TODAY” appears).
BYPASS VALVE OPERATION
To shut off water to the system, position arrow handles as shown in
the bypass operation diagram below. If your valve doesn’t look like the
diagram below, contact your service technician for instructions on how to
shut off water.
“TREATED”
WATER EXITS
SUPPLY
WATER ENTERS
SUPPLY
WATER EXITS
SUPPLY
WATER ENTERS
NORMAL OPERATION BYPASS OPERATION
GENERAL OPERATION
When the system is operating, one of four displays will be shown:
1. Time of day/gpm
2. Flow rate
3. Capacity remaining
4. Days to a regen
5. Dealer name and phone number
Pressing ���� will toggle between the four choices.
TO SET TIME OF DAY
In the event of a prolonged power outage, time of day flashes, indicating
that this needs to be reset. All other information will be stored in memory
no matter how long the power outage.
1. Accessed by pressing �����
2. Adjust hours with + or — buttons, AM/PM toggles at 12
3. Press ����
4. Adjust minutes with + or — buttons
5. Press ����
6. Adjust current day with + or — buttons
7. Press ���� to complete and return to normal operation
ERROR
If the display toggles between “Error”
and an error code (i.e. a number), call a
service technician and report the error
code.
ERROR
106
CALL FOR SERVICE
DAYS TO A REGEN
GPM
3
8
CAPACITY REMAINING
GPM GAL
1600
8
FLOW RATE
GPM
8.0
TIME OF DAY MON
GPM
2:408
PM
PHONE NUMBER
DEALER NA
CURRENT DAY
SET
MON
TIME MINUTES
SET
TIME HOUR
SET
2:00
AM
2:00
AM
REGEN TODAY MON
GPM
2:408
PM
REGEN TODAY and TIME OF DAY
will ash alternately if a regeneration
is expected tonight.
ADJUST DAYS BETWEEN
REGENERATION, AND TIME
OF REGENERATION
For initial set-up or to make adjustments,
please complete the following steps.
1. Accessed by pressing ���� and + button
simultaneously
2. Press ����
3. Adjust days between regenerations using
+ or — buttons
4. Press ����
5. Adjust time of regeneration hour with
+ or — buttons, AM/PM toggles at 12.
6. Press ����
7. Adjust time of regeneration minutes with
+ or — buttons
8. Press ����
9. Turn display backlight ON or OFF with
+ or — buttons. Default is ON.
10. Press ���� to complete and return to
normal operation.
DAYS BETWEEN REGEN
SET
3
REGEN TIME HOUR
AM
SET
12:00
REGEN TIME MINUTES
AM
SET
12:00
LIGHT NORMALLY
SET
ON

34
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34 35
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© 2023 A. O. Smith Corporation. All rights reserved. AOS-AOP FILT MAN - 100377725 - 2000809231 - RevA0226
1900 Prospect Court, Appleton, WI, 54914
aosmith.com/watertreatment
