Electric Hybrid
Water Heater
The purpose of this manual is twofold:
one, to provide the installer with the basic
directions and recommendations for the
proper installation and adjustment of the
water heater; and two, for the owner–
operator, to explain the features, operation,
safety precautions, maintenance and
troubleshooting of the water heater. This
manual also includes a parts list.
It is imperative that all persons who are
expected to install, operate or adjust this
water heater read the instructions carefully
so they may understand how to perform
these operations. If you do not understand
these instructions or any terms within it,
seek professional advice.
Any questions regarding the operation,
maintenance, service or warranty of this
water heater should be directed to the
seller from whom it was purchased. If
additional information is required, refer to
the section on “If you need service.”
DO NOT destroy this manual. Please
read carefully and keep in a safe place
for future reference.
!
Recognize this symbol as an
indication of Important Safety
Information!
AP21681 Rev 03
Use & Care Manual
With Installation Instructions for the Installer
© 2020 Rheem Sales Company Inc.
2
Care and Cleaning
Draining ................ 23
Maintenance ............. 23
Extended Shut-Down ..... 24
Safety Information
Safety Precautions ....... 3-4
Installation Instructions
Location ................. 5
Installing the Water Heater .. 6
Water Connections ........ 7
Condensate Drain ......... 7
Relief Valve .............. 8
LeakSense ............... 9
Self Check ............... 9
Electrical Connections. . . . . . 9
Pipe Insulation ........... 11
Ducting Requirements. . . . . 12
Installation Checklist .......14
Operating Instructions
Safety Controls .......... 16
Water Temperature ........16
Local Startup ..........17-20
EcoNet App .......... 21, 22
Troubleshooting Tips
Before You Call
For Service .............. 25
Troubleshooting
alarm code ........... 26-29
Customer Service
CTA Module Wiring .......30
JA13 Offline Schedule
Battery Replacement ... 31, 32
Replacement Parts ..... 33, 34
Cavity Insert ............. 35
Wiring Diagram .......... 36
If You Need Service ..... 40
FOR YOUR RECORDS
Write the model and serial numbers here:
#
#
You can find them on a label on the appliance.
Staple sales slip or cancelled check here.
Proof of the original purchase date is needed to obtain service
under the warranty.
Inside you will find many helpful hints on how to use and
maintain your water heater properly. Just a little preventive
care on your part can save you a great deal of time and money
over the life of your water heater.
You’ll find many answers to common problems in the Before
You Call For Service section. If you review our chart of
Troubleshooting Tips first, you may not need to call for service
at all.
READ THIS MANUAL
Your safety and the safety of others are very important.
There are many important safety messages in this manual
and on your appliance. Always read and obey all safety
messages.
!
This is the safety alert symbol. Recognize this
symbol as an indication of Important Safety
Information!
This symbol alerts you to potential hazards that
can kill or hurt you and others.
All safety messages will follow the safety alert symbol and
either the word “DANGER”, “WARNING”, “CAUTION”
or “NOTICE”.
These words mean:
!
DANGER
An imminently hazardous situation
that will result in death or serious
injury.
!
WARNING
A potentially hazardous situation that
could result in death or serious
injury and/or damage to property.
!
CAUTION
A potentially hazardous situation that
may result in minor or moderate
injury.
NOTICE:
Attention is called to observe a
specified procedure or maintain a
specific condition.
READ THE SAFETY INFORMATION
3
The chart shown above may be used as a guide in
determining the proper water temperature for your home.
!
DANGER: Households with small children, disabled,
or elderly persons may require a 120°F (49°C) or lower
thermostat setting to prevent contact with “HOT” water.
The temperature of the water in the heater is regulated
by the water heater interface control. To comply with
safety regulations the temperature was set at 120°F (49°C)
before the water heater was shipped from the factory. This
temperature setting corresponds to the default "ENERGY
SAVER" mode.
The illustration below shows the water temperature setting.
Refer to the Operating Instructions section of this manual for
detailed instructions on how to adjust water temperature settings
and change operating modes.
DANGER: Hotter water increases the potential for Hot
Water SCALDS.
Time/Temperature Relationship in Scalds
Temperature Time To Produce a Serious Burn
120°F (49°C) More than 5 minutes
125°F (52°C) 1½ to 2 minutes
130°F (54°C) About 30 seconds
135°F (57°C) About 10 seconds
140°F (60°C) Less than 5 seconds
145°F (63°C) Less than 3 seconds
150°F (65°C) About 1½ seconds
155°F (68°C) About 1 second
Table courtesy of Shriners Burn Institute
DANGER
!
HOT
Water temperature over 125° F (52°C)
can cause severe burns instantly or
death from scalds.
Children, disabled and elderly are
at highest risk of being scalded.
See instruction manual before
setting temperature at water
heater.
Feel water before bathing or
showering.
Temperature limiting valves are
available, see manual.
BURN
IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.
DANGER!
WATER TEMPERATURE SETTING
Safety and energy conservation are factors to be considered when selecting the water
temperature setting of water heater. Water temperatures above 125°F (52°C) can cause
severe burns or death from scalding. Be sure to read and follow the warnings outlined on
the label pictured below. This label is also located on the water heater near the thermistor
access panel.
NOTICE: Mixing valves are recommended for
reducing point of use water temperature by mixing
hot and cold water in branch water lines. It is
recommended that a mixing valve complying with
the Standard for Temperature Actuated Mixing
Valves for Hot Water Distribution Systems, ASSE
1017 be installed. See page 16 for more details and
contact a licensed plumber or the local plumbing
authority for further information.
When used in demand response applications a
thermostatic mixing valve conforming to ASSE
1017 shall be installed on the hot water supply line
following all manufacturer installation instructions.
See page 32 for additional installation information.
!
4
IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.
WARNING!
For your safety, the information in this manual must be followed to minimize the risk of fire or explosion,
electric shock, or to prevent property damage, personal injury, or loss of life.
Be sure to read and understand the entire Use and Care Manual before attempting to install or operate
this water heater. It may save you time and cost. Pay particular attention to the Safety Instructions.
Failure to follow these warnings could result in serious bodily injury or death. Should you have problems
understanding the instructions in this manual, or have any questions, STOP, and get help from a
qualified service technician, or the local electric utility.
FOR INSTALLATIONS IN THE STATE OF CALIFORNIA
California Law requires that all new and replacement water heaters, and all existing water heaters, must
be braced, anchored, or strapped to resist falling or horizontal displacement due to earthquake motion.
At a minimum, any water heater shall be secured in accordance with the California Plumbing Code, or
modifications made thereto by a city, county, or city and county pursuant to Section 17958.5. Generic
instructions for California titled “Guidelines for Earthquake Bracing Residential Water Heaters” can be
obtained by:
• Writing the California, Department of General Services, Division of State Architect, 1102 Q Street,
Suite 5100, Sacramento, CA 95814
• Calling (916) 445-8100
• Following web address:
https://www.dgs.ca.gov/-/media/Divisions/DSA/Publications/gas_shutoff/waterheaterbracing
READ AND FOLLOW THIS SAFETY INFORMATION
CAREFULLY.
SAVE THESE INSTRUCTIONS
Refrigerant
This Hybrid Water Heater is factory charged with an environmentally friendly, non-chlorinated
refrigerant, R134A. This refrigerant has zero ozone depletion potential.
Have the installer show you the location of the circuit breaker and how to shut it off if
necessary. Turn off the circuit breaker if the water heater has been subjected to overheating,
fire, flood, physical damage or if the ECO (temperature limiting control) fails to shut off.
● Read this manual entirely before installing or
operating the water heater.
● Use this appliance only for its intended
purpose as described in this Use and Care
Manual.
● Be sure your appliance is properly installed in
accordance with local codes and the provided
installation instructions.
● DO NOT attempt to repair or replace any part
of your water heater unless it is specifically
recommended in this manual. All other
servicing should be referred to a qualified
technician.
● DO NOT attempt to repair or replace the
compressor, refrigerant, or any part associated
with the sealed refrigerant system.
● DO NOT turn on the electrical supply
or operate this water heater unless it is
completely full of water.
SAFETY PRECAUTIONS
WARNING!
Disconnect all power to unit before starting maintenance. Failure to do so can cause electrical shock
resulting in severe personal injury or death.
WARNING!
FLAMMABLE CONTENTS UNDER PRESSURE. The compressor is not a serviceable part.
The compressor wiring terminals may arc allowing pressurized refrigerant and oil to escape,
ignite and cause serious bodily injury, severe burns or death.
5
Installing the water heater
The location chosen for the water heater must take into consideration the following:
Local Installation Regulations
This water heater must be installed
in accordance with these instructions,
local codes, utility codes, utility
company requirements or, in the
absence of local codes, the latest
edition of the National Electrical
Code. It is available from some local
libraries or can be purchased from the
National Fire Protection Association,
Batterymarch Park, Quincy, MA 02269
as booklet ANSI/NFPA 70.
Canadian installations should refer to
CSA22.1, a copy can be purchased
from the Canadian Standards
Association, 5050 Spectrum Way,
Mississauga,ONT L4W 5N6
Location
NOTICE: Auxiliary
drain pan MUST
conform to local
codes.
Drain Pan Kits
are available from
the store where
the water heater
was purchased, or
any water heater
distributor.
Drain Pan should not
obstruct cold inlet or
drain valve.
Locate the water heater in a clean dry
area as near as practical to the area of
greatest heated water demand. Long
un-insulated hot water lines can waste
energy and water.
Place the water heater in such a
manner that the thermistor and element
access panels can be removed to
permit inspection and servicing such
as removal of elements or checking
controls.
The water heater and water lines
should be protected from freezing
temperatures. DO NOT install the
water heater in outdoor, unprotected
areas.
Make certain the floor underneath
the water heater is strong enough to
sufficiently support the weight of the
water heater once it is filled with water.
Floor isolation kit is recommended to
minimize vibrations (where applicable).
CAUTION: The water heater
should not be located in an area
where leakage of the tank or
connections will result in damage
to the area adjacent to it or to
lower floors of the structure. Where
such areas cannot be avoided, it is
recommended that a suitable drain
pan, adequately drained, be installed
under the water heater.
NOTICE: Installation in a confined
space will lead to higher power
consumption if adequate ventilation
is not provided.
It is recommended that the hybrid
water heater be installed where ambient
temperatures DO NOT exceed 145°F
(63°C).
Insufficient air exchange will result in
increased energy consumption levels.
Clearances
Rear Sides Top
0" 0" 6"
A— Diameter of water
heater plus 4" min..
B— Maximum 2″
B
A
To open drain, line
should be at least
3/4″ ID and pitched
for proper drainage.
Inspect Shipment
Inspect the water heater for possible damage. Check the markings on the rating plate
of the water heater to be certain the power supply corresponds to the water heater
requirements. Rating plate is located on front of water heater.
!
6
Installing the water heater
Locations that provide optimal efficiency
6
Room size: Larger than 700 ft
3
(e.g. 7' x 10' x 10').
Requirements: No additional ventilation needed.
Heater: Not Ducted
24”
12” Max
Air exhaust
Door
.75”
Room size: Any size room
Requirements: No additional ventilation needed.
Heater: Ducted with inlet AND outlet duct
Room size: Any size room
Requirements: Air gap under door equal to 18 in
2
(0.75” clearance)
Heater: Ducted with inlet OR outlet duct
Room size: Smaller than 700 ft
3
(e.g. 7' x 10' x 10').
Requirements: Full louvered door OR two louvers
top and bottom. See below.
Heater: Not Ducted
24”
.75”
Room: Small Closet
Requirements: * Air gap under door equal to 18 in
2
(0.75” clearance).
* Louver must be located the same height on door as
the air exhaust on heater.
* Heater air exhaust must be positioned towards louver
within one foot of door.
Heater: Not ducted
Room size: Larger than 700 ft
3
(e.g. 7' x 10' x 10').
Requirements: No additional ventilation needed.
Heater: Not Ducted
24”
12” Max
Air exhaust
Door
.75”
Room size: Any size room
Requirements: No additional ventilation needed.
Heater: Ducted with inlet AND outlet duct
Room size: Any size room
Requirements: Air gap under door equal to 18 in
2
(0.75” clearance)
Heater: Ducted with inlet OR outlet duct
Room size: Smaller than 700 ft
3
(e.g. 7' x 10' x 10').
Requirements: Full louvered door OR two louvers
top and bottom. See below.
Heater: Not Ducted
24”
.75”
Room: Small Closet
Requirements: * Air gap under door equal to 18 in
2
(0.75” clearance).
* Louver must be located the same height on door as
the air exhaust on heater.
* Heater air exhaust must be positioned towards louver
within one foot of door.
Heater: Not ducted
Installing the water heater
NOTICE: If air
temperature in
installed location
drops more than
15°F (8°C) during
heating, air circulation
is insufficient for
efficient operation.
Utilize ducting to
direct cold exhaust air
to another location.
Locations that provide optimal efficiency
NOTICE: If air
temperature in
installed location
drops more than
15°F (8°C) during
heating, air circulation
is insufficient for
efficient operation.
Utilize ducting to
direct cold exhaust air
to another location.
7
Thermal Expansion
Determine if a check valve exists in the
inlet water line. Check with your local
water utility. It may have been installed in
the cold water line as a separate back flow
preventer, or it may be part of a pressure
reducing valve, water meter or water softener.
A check valve located in the cold water inlet
line can cause what is referred to as a “closed
water system”. A cold water inlet line with
no check valve or back flow prevention
device is referred to as an “open” water
system.
As water is heated, it expands in volume and
creates an increase in the pressure within the
water system. This action is referred to as
“thermal expansion”. In an “open” water
system, expanding water which exceeds the
capacity of the water heater flows back into
the city main where the pressure is easily
dissipated.
A “closed water system”, however, prevents
the expanding water from flowing back
into the main supply line, and the result of
“thermal expansion” can create a rapid
and dangerous pressure increase in the
water heater and system piping. This rapid
pressure increase can quickly reach the
safety setting of the relief valve, causing
it to operate during each heating cycle.
Thermal expansion, and the resulting rapid
and repeated expansion and contraction of
components in the water heater and piping
system can cause premature failure of the
relief valve, and possibly the heater itself.
Replacing the relief valve WILL NOT
correct the problem!
The suggested method of controlling thermal
expansion is to install an expansion tank in
the cold water line between the water heater
and the check valve (refer to the illustration
on the next page). The expansion tank is
designed with an air cushion built in that
compresses as the system pressure increases,
thereby relieving the over pressure condition
and eliminating the repeated operation of the
relief valve. Other methods of controlling
thermal expansion are also available. Contact
your installing contractor, water supplier or
plumbing inspector for additional information
regarding this subject.
Water Supply Connections
Refer to the illustration on the next page
for suggested typical installation. The
installation of flexible connectors is
recommended on the hot and cold water
connections. Flexible connections provide
vibration isolation and allow the water heater
to be easily disconnected for servicing if
necessary. The HOT and COLD water
connections are clearly marked and are
3/4in. NPT on all models. Install a shut-off
valve in the cold water line near the water
heater.
See page 9 on "To Fill The Water Heater".
NOTICE: DO NOT apply heat to the
HOT or COLD water connections. If sweat
connections are used, sweat tubing to
adapter before fitting adapter to the water
connections on heater. Any heat applied to
the water supply fittings will permanently
damage the dip tube and/or heat traps.
Condensate Drains
Consult local codes or ordinances for
specific requirements. Refer to page 5.
IMPORTANT: When making drain fitting
connections to the drain tubing, use a thin
layer of piping tape or silicone and install
hand tight.
IMPORTANT: When making drain fitting
connections to the drain tubing, DO NOT
overtighten. Overtightening fittings can split
pipe connections on the drain pan.
• This unit is equipped with a 3/4" NPT
female primary condensate connection.
Use MIP fittings for connections.
• DO NOT reduce drain line size less
than connection size provided on
condensate drain.
• All drain lines must be pitched
downward away from the unit a
minimum of 1/8" per foot of line to
ensure proper drainage.
• Drain lines must include a P-trap if
connected to a sewer pipe.
• If no drain is available, then a common
condensate pump with a capacity no
less than 2 gallon per day must be
installed.
• DO NOT allow condensate to drain into
the water heater drain pan.
• The drain line should be insulated
where necessary to prevent sweating
and damage due to condensate forming
on the outside surface of the line.
NOTICE: The inlet and
outlet water nipple remain
with the black markings
pointed up.
NOTICE: Condensate
from this unit is not Acidic
and is not required to be
neutralized.
8
6" Minimum clearance above heat
pump to allow for lter maintenance
Ceiling
Air lter
Drain valve
Hot water outlet
to xtures
Shut-o valve
(Not included in all models)
Cold water
supply
Thermal expansion
tank (if required)
6" Air gap
Heat trap
6" Min
Primary
condensation
(3/4") to open
drain or
outdoors
Flexible Connection
recommended
(Such as PEX)
Piping Tee to be installed in condensate
plumbing to provide access opening for
yearly inspection and cleaning.
Flexible Connection
recommended
(Such as PEX)
!
WARNING: The
pressure rating of
the relief valve
must not exceed
150 PSI, the
maximum working
pressure of the
water heater as
marked on the
rating plate.
!
WARNING: DO NOT connect other plumbing to the T&P plumbing; it must go directly to a suitable open drain.
DO NOT connect the T&P plumbing to the condensate plumbing.
A new combination temperature and pressure relief valve, complying with the Standard for Relief
Valves for Hot Water Supply Systems, ANSI Z21.22/CSA 4.4, is factory installed and must remain
in the opening provided and marked for the purpose on the water heater. No valve of any type
should be installed between the relief valve and the tank.
Relief Valve
The BTUH rating of the relief valve must
not be less than the input rating of the
water heater as indicated on the rating
label located on the front of the heater
(1 watt=3.412 BTUH).
Connect the outlet of the relief valve
to a suitable open drain so that the
discharge water cannot contact live
electrical parts or persons and to eliminate
potential water damage.
Piping used should be of a type approved
for hot water distribution. The discharge
line must be no smaller than the outlet of
the valve and must pitch downward from
the valve to allow complete drainage (by
gravity) of the relief valve and discharge
line. The end of the discharge line should
not be threaded or concealed and should
be protected from freezing. No valve of
any type, restriction or reducer coupling
should be installed in the discharge line.
Typical Installation
Installing the water heater
Leak Sense
(Not included
in all models)
9
Electrical Connections
To Fill the Water Heater
Make certain the drain valve on the
water heater is completely closed.
Open the shut-off valve in the cold
water supply line.
Open each hot water faucet slowly to
allow the air to vent from the water
heater and piping.
A steady flow of water from the hot
water faucet(s) indicates a full water
heater.
!
WARNING: Turn off electric power at the fuse
box or service panel before making any electrical
connections.
Also, the ground connection must be completed before
making line voltage connections. Failure to do so can
result in electrical shock, severe personal injury or
death.
Disconnect all power to unit before starting
maintenance. Failure to do so can cause electrical shock
resulting in severe personal injury or death
The unit must be grounded. Failure to do so can cause
electrical shock resulting in severe personal injury or
death.
If the water heater has been subjected to fire, flood or
physical damage, DO NOT operate the water heater
again until it has been checked by a qualified service
technician.
NOTICE: DO NOT use this appliance if any part
has been under water. Immediately call a qualified
installer or service agency to replace a flooded water
heater. DO NOT attempt to repair the unit! It must
be replaced.
EcoNet™ Communication
EcoNet™ communication is provided for integration with home automation,
energy management, and demand response systems. Connectivity is provided
through the via wireless (Wi-Fi).
Electrical Power
Hookup Terminals
Ground Screw inside
Junction Box
EcoNet™ Port
(Service Only)
CTA Adaptor
(Not included
in all models)
Right Side View
!
WARNING: DO NOT
turn on the electrical
supply or operate this
water heater unless it is
completely full of water.
The tank must be full of
water before water
heater is turned on. The
water heater warranty
does not cover damage
or failure resulting from
operation with an empty
or partially empty tank.
LeakSense
TM
This water heater is equipped with
built-in leak detection and automatic
water shut off valve. The leak
detection device (LeakSense
TM
) detects
the presence of water and immediately
alerts the electronic control as the
EcoNet app on the cellular phone.
When water is detected, the electronic
controls will shut down the heating
elements and the automatic water shut
off valve closes.
Self Check
The automatic water shut off valve
has a self check feature which runs
every 30 days once the water heater
is powered on. This feature works by
closing and reopening the automatic
water shut off valve. In case the valve
fails to reopen, the water heater will be
DISABLED. The water heater gives
alert when the automatic water shut off
valve fails to close.
!
WARNING: Failure to
follow the instructions
provided in this manual
may permanently damage
the unit and void the
manufacturer’s warranty.
10
A separate branch circuit with copper
conductors, overcurrent protective device
and suitable disconnecting means must
be provided by a qualified electrician.
All wiring must conform to local codes
or latest edition of National Electrical
Code ANSI/NFPA 70.
The water heater is completely wired to
the junction box inside jacket at the top
front of the water heater. An opening
for 1/2 in. or 3/4 in. electrical fitting is
provided for field wiring connections.
The voltage requirements and wattage
load for the water heater are specified on
the rating plate on the front of the water
heater.
The branch circuit wiring should include
either:
Metallic conduit or metallic
sheathed cable approved for use as
a grounding conductor and installed
with fittings approved for the
purpose.
Non-metallic sheathed cable,
metallic conduit or metallic
sheathed cable not approved for use
as a ground conductor shall include
a separate conductor for grounding.
It should be attached to the ground
terminals of the water heater and
the electrical distribution box.
Insulation blankets, available to the general public,
for external use on electric water heaters are not
necessary. The purpose of an insulation blanket
is to reduce the standby heat loss encountered
with storage tank heaters. This water heater
meets or exceeds the National Appliance Energy
Conservation Act standards with respect to
insulation and standby loss requirements making an
insulation blanket unnecessary.
The manufacturer’s warranty does not cover any
damage or defect caused by installation, attachment
or use of
any type of energy saving or other unapproved
devices (other than those authorized by the
manufacturer) into, onto or in conjunction with the
water heater. The use of unauthorized energy saving
devices may shorten the life of the water heater and
may endanger life and property.
The manufacturer disclaims any responsibility for
such loss or injury resulting from the use of such
unauthorized devices.
CAUTION: If local codes require the
application of an external insulation blanket
to this water heater, pay careful attention to
the following so as not to restrict the proper
function and operation of the water heater:
DO NOT cover the operating or warning labels
attached to the water heater or attempt to relocate
them on the exterior of insulation blanket.
DO NOT cover air openings on both sides of the
water heater .
DO NOT cover the Controller Assembly,
temperature and pressure relief valve or drain
valve.
Inspect the insulation blanket frequently.
!
WARNING:
If local codes
require external
application of
insulation
blanket kits the
manufacturer’s
instructions
included with
the kit must be
carefully
followed.
Insulation Blankets
Electrical Connections continued...
Water heater junction box.
Junction
Box Cover
Ground
Screw
DO NOT turn on the
electrical supply or operate
this water heater unless it is
completely full of water.
!
Installing the water heater
CAUTION: The presence
of water in the piping
and water heater does
not provide sufficient
conduction for a ground.
Non-metallic piping,
dielectric unions, flexible
connectors etc. can cause
the water heater to be
electrically isolated.
!
!
Branch Circuit Sizing And Wire Size Guide
Total Water Heater
Wattage
Recommended Over Current
Protection (Fuse or Circuit
Breaker Amperage Rating)
Copper Wire Size AWG based on
NE.C. Table 310-16 (75˚C)
240V 240V
2250 15 14
2750 15 14
3000 20 12
4000 25 10
5000 30 10
5500 30 10
NOTE: When sizing the breaker and wire for over current protection, include an additional 500W
to the upper element wattage rating. This will account for the maximum amperage draw of the
compressor and fan motor.
SINGLE
PHASE
WIRING
NOTICE: This guide recommends minimum branch circuit sizing and wire size based
on National Electric Code. Refer to wiring diagrams in this manual for field wiring
connections.
Wire
Connections
CTA Adaptor
(Not applicable
for all models
Conduit
connector
Vertical
Flexible
Filter
Air Outlet
Opening
Air filter
must be
accessible
Controller
Assembly
11
Hot Water
Outlet
Cold Water
Inlet
Relief
Valve
Drain
Valve
LeakSense
TM
(Not included
in all models)
Shut o Valve
(Not included in all models)
Hot and Cold Pipe Insulation Installation
Install the insulation on the cold water supply inlet and the
hot water outlet as shown in the illustration.
12
Installing the water heater
Always check with local building and
HVAC codes before designing the duct
system
The water heater may be ducted to the
outdoors or another space as described in
these instructions. Ducting congurations
that does not comply with these
guidelines are not supported.
DO NOT connect this water heater to
existing duct work; it must be ducted
separately from other appliances.
Ducting approved for HVAC applications
is required.
Ducting must be adequately supported
along both vertical and horizontal
lengths.
UL Certied terminations must be
used for ducting to the outside. These
terminations have been evaluated to
ensure there is sucient protection
from rain water entry and resistance to
air ow is minimized.
Indoor registers approved for HVAC
applications is required.
Rigid ducting must be isolated from
oor joists or other structural members
to minimize the transmission of noise
and vibration. A short section (12
inch minimum) of exible duct must
be used between the water heater and
rigid ducting as an isolation method.
Every foot of exible ducting counts as
three feet of rigid ducting.
Ducting must be insulated per HVAC
codes (to prevent condensation).
Ensure cold air exhaust is suciently
away from structures to prevent
condensation on surfaces.
Maximum heater performance is
obtained by lowering the resistance to
air ow (regular lter maintenance is
benecial) and providing the unit with
warm moist air.
Considerations when planning the duct
system:
Run the ducting the most direct
route possible.
Limit the number of elbows/bends.
Use the largest duct size possible.
Use the largest termination possible.
Consider placement and direction of
terminations (reduce recirculation of
exhaust into the intake).
Calculated length of duct is the
length on the inlet plus the length
on the outlet. Any combination of
duct lengths on the inlet and outlet is
supported up to the maximum duct
length (Table 1).
The inlet and outlet ducting
connections on the water heater
accepts 8 inch diameter ducting. No
additional adaptors are needed.
7 inch, 6 inch, 5 inch diameter
ducting is supported. Table 1 lists the
total feet of ducting allowed. For
duct diameters smaller than 8 inch
diameter, Table 1 takes into account
the duct reducer(s) and up to 10 feet
of 8 inch rigid ducting (two elbows)
before the duct reducer(s) at the unit.
Duct Reducers must be installed
within 10 feet (two elbows) of the unit
or within 2 feet of the end of the duct.
Ducting Requirements
Duct System Configuration
Table 1.- Maximum Duct Length.
Duct Type / Diameter 8" 7" 6" 5"
Rigid
340' 160' 65' 17'
Flexible
125' 65' 25' --
13
Elbows/Bends
Rigid duct elbows and flex bends greater than 45°
is considered an elbow.
Flexible ducting bends’ inner radius cannot be less
than its diameter. If bends with tighter radiuses are
needed, a rigid elbow must be used.
Maximum number of elbows/bends allowed are
shown in [brackets] in Table 2.
Terminations/Registers
Table 2 equivalent feet for terminations includes
the rodent screen.
For terminations and registers with smaller
diameters than the duct diameter, Table 2 accounts
for the duct reducer and termination/register.
Smaller diameter terminations and registers with
more than a 2 ft. connection is not supported.
Damper
If ducting to the outside using an exhaust duct
only (no intake duct), an approved Rheem damper
should be installed no further than 10 ft. of rigid
ducting total (two elbows equivalent) from the
unit. This prevents outside air from coming into
the living space. If ducting air from the outside
to the inlet of the heater, no provision is made to
prevent outside air from flowing into the living
space.
Equivalent feet for Duct Accessories
Table 2.- Equivalent feet for Duct Accessories.
Description 8" 7" 6" 5"
Elbows/Flexible Bends (Each)
[Maximum Allowed]
5'
[8]
5’
[6]
5’
[4]
5’
[2]
8 inch UL Certied Termination for ducting outside (Each) 5' 5' 5' 5'
Reduced diameter UL Certied Termination for ducting outside (Each) N/A 10' 15' 20'
8 inch Register for ducting inside (Each) 5' 5' 5' 5'
Reduced diameter Register for ducting inside (Each) N/A 10' 15' 20'
Rodent Screen (must be greater than 83% open area) (Each) 1' 1' 1' 1'
Rheem approved 8" diameter Duct Damper 25' 20' 10' 5'
Table 2 lists equivalent feet for duct accessories and reduced diameter terminations.
Accessory Kits
Part Number Description User For
SP20882 Earthquake Isolation Kit for Hybrid Water Heater. Installations in Seismic Regions.
SP20883 Vibration Isolation Kit for Hybrid Water Heater. Installation on Non-Concrete oors.
SP20884 8” Dia. UL Certied Termination kit. Termination to the outside or to attic with 8" diameter.
SP20885 7” Dia. UL Certied Termination kit. Termination to the outside or to attic with 7" diameter.
SP20886 6” Dia. UL Certied Termination kit. Termination to the outside or to attic with 6" diameter.
SP20887 5” Dia. UL Certied Termination kit. Termination to the outside or to attic with 5" diameter.
SP20888 8" Rheem Approved Damper Kit.
Exhaust only to the outside Ducting Conguration (No
inlet Duct).
SP20889 25’ Flexible 8” dia. duct kit. For up to 25' of Ducting.
SP20890 Rigid Elbow Duct Kit.
Installation in tight places where space needs to be
minimized.
SP17829 Outlet Duct Adaptor Kit
Use for exhaust cool and dry air to another place inside or
outside the house ( use where applicable )
AP19134 Leak Sensor Use for water leak sensor ( for select models only )
SP21105 Inlet Duct Adaptor Kit
Use for bring warm air from another place inside or
outside the house ( use where applicable )
SP21111 Gen V leak sensor and shut o valve kit
Use for preventing leak and automatic water shut o
valve ( for select models only )
Rigid
Adjustable
Elbow
Inlet Duct
Adapter
Outlet Duct Adapter Kit
6" Clearance
for lter
8" to 5" Duct Reducers
(Flex Duct Insulation extended
over reducers and secured with
Duct tie)
Rigid Duct
secured with
screws to unit
adapter
Flex Duct secured and sealed with Duct tie
(2 places on Inlet)
(1 place on Outlet to secure Flex Duct to unit ange)
8" Insulated Flex Duct
Air Inlet
Wall
Cold Air
Exhaust
HVAC tape
used to seal
Reducer and
Termination
Joints
UL Certied
terminations
8" Insulated
Flex Duct
Exhaust/Inlet or both? Both, Inlet and Outlet
Ducting to outside of building or another room? Outside building.
Length of duct from water heater to termination? 20 ft.
Flexible or Rigid ducting? Flexible.
Diameter of ducting used? 8 in. Diameter
Diameter of wall penetrations? 5 in. Diameter
Number of elbows/bends? 3 Total – One on inlet and Two on Outlet
I. Does calculated ducting length exceed maximum allowable table?
a. 20 ft. (Outlet duct length)
b. 10 ft. (1 rigid elbow and 1 bend on outlet)
c. 20 ft. (reduced diameter termination outlet)
d. 20 ft. (Inlet duct length)
e. 5 ft. (1 Bend on inlet)
f. 20 ft. (reduced diameter termination inlet)
g. Total = 20+10+20+20+5+20 = 95 ft.
Using flexible 8 in. diameter duct, the maximum duct length allowed is 125
ft.; therefore, because 95 ft. is less than 125 ft., this is an acceptable ducting
configuration.
Accessory Kits SP20887 (2 Kits), SP20889 (2 Kits) and SP20890 (1 Kit) are
available for this installation.
Ducting Example:
NOTICE: These
seven questions
should be answered
to ensure correct duct
configuration.
See Ducting Example.
Once the duct
terminal location has
been determined,
make a hole through
the exterior wall
to accommodate
the UL Certified
Termination.
Termination must
exit exterior wall
horizontally only.
Complete rest of the
duct pipe installation
to the water heater’s
duct connector
fitting.
If necessary,
support horizontal
run as previously
mentioned.
Horizontal Duct
Installation
Installing the water heater
14
15
❑ HVAC approved ducting.
❑ Calculated length of duct no greater than
maximum allowed.
❑ UL Certified terminations (For ducting to the
outside).
❑ Insulated duct.
❑ Ducting adequately supported.
❑ Ducting adequately isolated from structure.
❑ Make sure valve is open condition .
❑ Make sure sensor is dry and doesn't touch the
water during installation.
Installation Checklist
A. Water Heater Location
❑ Close to area of heated water demand.
❑ Indoors and protected from moisture, wet
conditions, freezing temperatures (below 32°F
(0°C)) and High temperatures (above 140°F
(60°C)).
❑ Area free of flammable vapors.
❑ Provisions for Air Circulation (Louvered doors on
ducting).
❑ Provisions made to protect area from water damage.
❑ Sufficient room to service heater.
❑ Six inches (6") of clearance from ceiling to
top of Hybrid Water Heater to allow for filter
maintenance.
❑ Access to condensate disposal.
❑ Vibration Isolation Kit (Non-Concrete floors).
❑ Hybrid seismic Kit (if required).
B. Water Supply
F. Ducting
G. Shutoff Valve
H. Leak Sensor
❑ Water heater completely filled with water.
❑ Air purged from water heater and piping.
❑ Water connections tight and free of leaks.
❑ Flexible water connections.
C. Relief Valve
❑ Temperature and Pressure Relief Valve properly
installed and discharge line run to open drain.
❑ Discharge line protected from freezing.
D. Wiring
❑ Power Supply voltage agrees with water heater
rating plate.
❑ Branch circuit wire and fusing or circuit breaker
of proper size. (Recommended 15 amp & 30 amp
breaker for select models).
❑ Electrical connections tight and unit properly
grounded.
❑ 10 gauge wire.
E. Condensate Lines
❑ Condensate lines from heat pump installed
correctly.
❑ Condensate lines from heat pump run to a
suitable drain location.
16
The water heater is equipped with a
temperature limiting control (ECO)
that is located above the upper heating
element in contact with the tank
surface. If for any reason the water
temperature becomes excessively high,
the temperature limiting control (ECO)
breaks the power circuit to the heating
element. Once the control opens, it must
be reset manually.
CAUTION: The cause of the high
temperature condition must be
investigated by qualified service
technician and corrective action must
be taken before placing the water
heater in service again.
To reset the temperature limiting control:
(Refer to Illustration in Cavity Insert
section):
Disconnect all power to unit before
starting maintenance.
Remove the upper cavity cover and
insulation.
Press the red RESET button.
Replace the insulation, jacket
access panel and plastic housing
before turning on the power to the
water heater.
!
DANGER: There is a
hot water scald potential if
the thermostat is set too
high. Households with small
children, disabled, or
elderly persons may require
a 120°F (49°C) or lower
thermostat setting to
prevent contact with HOT
water.
Water Temperature Setting
The temperature of the water in the water
heater can be regulated by selecting the
desired temperature on control display.
Safety and energy conservation are
factors to be considered when selecting
the water temperature setting of the
water heater. The lower the temperature
setting, the greater the savings in energy
and operating costs.
To comply with safety regulations the
temperature is factory set at 120°F
(49°C) or less where local codes require.
This is the recommended starting point.
Water temperatures above 125°F (52°C)
can cause severe burns or death from
scalding. Be sure to read and follow the
warnings outlined in this manual and on
the label on the water heater. This label is
located on the front of the water heater.
Mixing valves are recommended for
reducing point of use water temperature
by mixing hot and cold water in
branch water lines. It is recommended
that a mixing valve complying
with the Standard for Temperature
Actuated Mixing Valves for Hot Water
Distribution Systems, ASSE 1017 be
installed. See page 3 for more details
and contact a licensed plumber or the
local plumbing authority for further
information.
When used in demand response
applications a thermostatic mixing valve
conforming to ASSE 1017 shall be
installed on the hot water supply line
following all manufacturer installation
instructions. See page 32 for additional
installation information.
The chart on the page 3 may be used as
a guide in determining the proper water
temperature for your home.
Safety Precautions
Disconnect all power to water
heater if it has been subjected to
over heating, fire, flood, physical
damage.
DO NOT turn on water heater
unless it is filled with water.
DO NOT turn on water heater if
cold water supply shut-off valve
is closed.
If there is any difficulty in
understanding or following the
Operating Instructions or the
Care and Cleaning section, it is
recommended that a qualified
person or serviceman perform the
work.
Operating the water heater
CAUTION: Hydrogen gas can be produced in a hot water system served by this water heater that has not been used for
a long period of time (generally two weeks or more). HYDROGEN GAS IS EXTREMELY FLAMMABLE!! To dissipate
such gas and to reduce risk of injury, it is recommended that the hot water faucet be opened for several minutes at the
kitchen sink before using any electrical appliance connected to the hot water system. If hydrogen is present, there will be an
unusual sound such as air escaping through the pipe as the water begins to flow. DO NOT smoke or use an open flame near
the faucet at the time it is open.
Safety Controls
WARNING: If the water
heater has been subjected
to fire, flood or physical
damage, disconnect all
power to water heater, and
DO NOT operate the water
heater again until it has
been checked by a qualified
service technician.
NOTICE: DO NOT use
this appliance if any part
has been under water.
Immediately call a qualified
installer or service agency
to replace a flooded water
heater. DO NOT attempt
to repair the unit! It must
be replaced.
17
Local Startup
Current Mode
Scald Warning
Current Set Point
Fault Indicator
Current Alarm
& History
Scroll Available
Enable/Disable
Clear Alarm
WiFi Setup &
Indicator
Enter / Select
Text Display
Next Screen /
Option
Mode Toggle
Temp & Value
Adjustment
User Interface
ICONS show the current state of the entire system.
1. Current Mode - Illuminated when the system is working on the corresponding mode.
2. Wi-Fi Indicator - Illuminated when the display detects valid connection to a Wi-Fi network. Blink-
ing when in provisioning mode.
3. Fault Indicator - Illuminated when the display detects OBJECT codes ALMCODE 1, 2, 3 or 4 is
greater than "0". This indicates the Control Board has detected either an Alarm or an Alert.
4. Scroll Available Indicator - Illuminated when the display detects the Up/Down arrows are enabled
to scroll.
5. Scald Warning - Illuminated when the display detects potential scalding water temperatures. Use
water at own risk.
6. Enable/Disable Indicator - Illuminated when the display is Enabled (ON).
Operating Mode
Press the "Mode" button to utilize the five major
modes of operation: The active mode is displayed on
the top of the screen.
Heat Pump Only
This mode will heat with compressor operation
only and will not use any electric heat during
typical heating and demand cycles, This mode will
Minimize power consumption.
Energy Saver - Factory set mode for
shipping.
This mode optimizes compressor and electric heat
that results in water heater performance that meets
Energy Star requirements.
As result, compressor operation will be maximized
and use of electric heat will be minimized.
High Demand
This mode will maximize the performance of the
water heater while still providing good energy
savings. Water heater operates with simultaneous
compressor and electric heat.
Electric Only
This Mode will heat with the electric resistance
elements. This mode should only be used during
compressor maintenance periods. This mode will
result in maximum power consumption.
Vacation
This mode will allow during setting between 2 and
28 days or set indefinitely with the "Hold" setting.
Tank temperature will be maintained at about 82°F.
Only compressor operation will be allowed as
needed.
18
Local Startup
Adjusting Temperature
High Temperature Enabling
Enabling / Disabling Unit
1) Press the "ON/OFF" button to turn on / en-
able unit.
*Unit will be disabled upon initial startup.
1) Press the "UP" button to increase tempera-
ture.
Enable high temperatures (+140°) by pressing
and holding both "UP" and "DOWN" buttons
for 3 seconds when temperature is set to 140°F.
*Maximum Temperature: 150°F (65°C). High
Temperature Setting will be disabled after 5
minutes if the user decreases the temperature
below 140°F (60°C).
Lock/Unlock Display
• Press and hold for 5 seconds both UP and
DOWN buttons to Lock/Unlock the Dis-
play. This prevents any change in Mode
of operation or set-point if any button is
pressed.
2) Press the "DOWN" button to decrease
temperature.
2) Press the "ON/OFF" button to
turn off/disable the unit.
*Scald warning will automatically appear at 120°F and higher. *Scald warning will automatically appear at 120°F and higher.
19
Modes of Operation
• Energy Saver (Default Mode)
• High Demand
• Heat Pump
• Electric
• Vacation
Mode Eciency Recovery
Electric Very Low Fast
Heat Pump High Very Slow
High Demand Low. Very Fast
Energy Saver Very High. Fast
Vacation Very High None
Change Mode of Operation
Setting Menu
Press the "MODE" button to select operating
mode.
The Energy Saver, default mode is recommended
for normal operation, providing maximum sav-
ings and fast recovery. Heat pump operation in
this mode provides primary heating, with one
heating element engaging only if required by
demand.
Recovery and energy savings vary with the differ-
ent operating modes.
Press the "NEXT" button to access the settings.
Keep pressing "NEXT" button to scroll through the
following menu items:
1. ALARM BEEP: Enable/Disable Alarm Sound.
a. Use the Up/Down arrows to change from Yes
(Default) to No sound.
2. TEMP DISPLAY: Change the temperature units
(°F or °C).
a. Use the Up/Down arrows to change from F°
(Default) to °C.
3. CURRENT ALARMS
a. Use the Up/Down arrows to scroll through
the current alarms.
b. To clear alarms press the Clear Alarm button.
4. ALARM HISTORY
a. Use the Up/Down arrows to scroll through
the alarm history.
5. CLEAR HISTORY
a. Press ENTER to clear alarm history.
6. MAC ADDRESS: WiFi MAC Address.
7. NETWORK INSTANCE: Instance of the cur-
rent unit.
a. Use the Up/Down arrow to change Network
Instance if needed.
8. SOV INSTALLED:
a. A Shut-Off Valve (SOV) is installed? - This
will say yes if a SOV is installed.
20
Local Startup
WiFi Setup
WiFi Soft Reset
WiFi Hard Reset
1. Press, hold for 5 seconds and release the WiFi
button.
2. WiFi LED will start to blink when it is ready to
start WiFi setup.
3. WiFi signal will start to broadcast for 30 min-
utes and user can use EcoNet Application to
setup WiFi.
4. If setup is not completed in the next 30 minutes,
WiFi will stop broadcasting. User should per-
form these steps again to re-start WiFi setup.
5. Once correctly connected, LED will turn solid
blue.
If WiFi needs to be reseted while keeping the same
WiFi login information:
1. Press, hold for 3 seconds and release the WiFi
button. 1 beep will be heard.
2. WiFi will try to re-connect to the same network
that was configured previously.
If WiFi needs to be reset because there is a new
network to be used:
1. Press, hold for 5 seconds and release the WiFi
button. 3 beeps will be heard.
2. Follow the same steps as in WiFi Setup section.
EcoNet App 2.0 Instructions
1 2
3 4
Open and log into your
EcoNet app and select
the “Add Product” op-
tion on the main equip-
ment screen.
Add a location by either
selecting “Use my cur-
rent location” or entering
your zip code, then hit
“Next”.
Place your Water Heater
in WiFi setup and click
the “Continue” button.
Select your WiFi mod-
ule’s mac address from
the network list. You can
find your MAC address
in the Water Heater WiFi
menu
Download EcoNet app and create profile
21
EcoNet App
22
5 6
7 8
Return to the app, where
you should see the fol-
lowing screen. Click
“Available Networks”.
Select your router and
enter your password.
Click “Connect”.
The app should proceed
to provision your WiFi
module using a secure
connection. You should
see message shown in
the image on the left.
Once connected, prod-
uct home screen will be
displayed.
EcoNet App
23
Routine Preventative Maintenance
Properly maintained, your water heater
will provide years of dependable
trouble-free service.
It is suggested that a routine
preventive maintenance program be
established and followed by the user.
Most electrical appliances, even
when new, make some sound when
in operation. If the hissing or singing
sound level increases excessively,
Contact a qualified installer or
plumbing contractor to inspect.
IMPORTANT: See "DANGER
on left". At least once a year, lift
and release the lever handle on the
temperature pressure relief valve,
located on the side of the water heater,
to make certain the valve operates
freely. Allow several gallons to flush
through the discharge line to an open
drain.
It is recommended to clean the filter
on top of the heat pump when "Clean
filter reminder" alert appears. Clean
by washing with mild detergent and
water. Dry and replace. Remove the
filter by lifting up, then replace by
lowering back into the filter slot on
top of the unit. See Figure below.
At least once a year pour a cup of
bleach in the access opening of the
condensate drain to kill any algae,
mold, or mildew that has formed in
the pipe. Ensure the condensate can
flow freely; unclog if needed.
A water heater’s tank can act as a
setting basin for solids suspended
in the water. It is therefore not
uncommon for hard water deposits to
accumulate in the bottom of the tank. It
is suggested that a few quarts of water
be drained from the water heater’s tank
every month to clean the tank of these
deposits.
Rapid closing of faucets or solenoid
valves in automatic water using
appliances can cause a banging noise
heard in a water pipe. Strategically
located risers in the water pipe system
or water hammer arresting devices can
be used to minimize the problem.
DANGER: Before
manually operating the
relief valve, make certain
no one will be exposed to
the danger of coming in
contact with the hot water
released by the valve. The
water may be hot enough to
create a scald hazard. The
water should be released
into a suitable drain to
prevent injury or property
damage.
NOTICE: If the
temperature and pressure
relief valve on the
water heater discharges
periodically, this may be
due to thermal expansion
in a closed water system.
Contact the water
supplier or your plumbing
contractor on how to
correct this. DO NOT plug
the relief valve outlet.
Care and cleaning of the water heater
Draining the Water Heater
CAUTION: Shut off power to the
water heater before draining water.
DANGER: Before manually
operating the relief valve, make
certain no one will be exposed to the
hot water released by the valve. The
water drained from the tank may be
hot enough to present a scald
hazard and should be directed to a
suitable drain to prevent injury or
damage.
In order to drain the water heater, turn
off the cold water supply. Open a hot
water faucet or lift the handle on the
relief valve to admit air to the tank.
Attach a garden hose to the drain
valve on the water heater and direct
the stream of water to a drain. Open
the valve.
Filter
Handle
Vertical
Flexible
Filter
24
Vacation and Extended Shut-Down
If the water heater is to remain idle for
an extended period of time, the power
and water to the appliance should
be turned off to conserve energy
and prevent a build-up of dangerous
hydrogen gas.
The water heater and piping should be
drained if they might be subjected to
freezing temperatures.
After a long shut-down period, the
water heater’s operation and controls
should be checked by qualified service
personnel. Make certain the water
heater is completely filled again before
placing it in operation.
NOTICE: Refer to the
Hydrogen Gas Caution in
the Operating Instructions.
Anode Rod
This water heater is equipped with an
anode rod designed to prolong the life
of the glass-lined tank. The anode rod is
slowly consumed, thereby eliminating
or minimizing corrosion of the glass-
lined tank.
Water sometimes contains a high
sulfate and/or mineral content and
together with cathodic protection
process can produce a hydrogen sulfide,
or rotten egg odor in the heated water.
Chlorination of the water supply should
minimize the problem.
NOTICE: DO NOT remove
the anode rod from the
water heater’s tank.
Operation with the anode
rod removed will greatly
shorten the life of the glass
lined tank and will exclude
warranty coverage.
Care and cleaning of the water heater
25
Before You Call For Service…
Troubleshooting Tips
Save time and money! Review the chart on this page first and you may not need to call for service.
Problem Possible Causes What to Do
Rumbling noise
Water conditions in your
home caused a build up of
scale or mineral deposits in
the water heater.
● Allow a few quarts of water to run from drain valve
to remove sediment settlings.
Relief valve
producing popping
noise or draining
Pressure build up caused
by thermal expansion in a
closed system
● This is an unacceptable condition and must be
corrected. Contact the water supplier or plumbing
contractor on how to correct this. DO NOT plug the
relief valve outlet
Not enough or no
hot water
Water usage may have
exceeded the capacity of
the water heater.
● Wait for the water heater to recover after an abnormal
demand
A fuse is blown or a circuit
breaker tripped
● Replace fuse or reset circuit breaker
Electric supply may be o
● Conrm electric supply to water heater and see
installation section of this manual.
The thermostat may be set
too low.
● See the Temperature regulation of the water heater
section of this manual
Leaking or open hot water
faucets
● Make sure all faucets are closed
Electric service to your
home may be interrupted
● Contact the local electric utility.
Improper wiring.
● See the Installing the water heater section of this
manual.
Manual reset limit (ECO)
● See the Temperature regulation of the water heater
Refer to page 3 for more information.
Cold water inlet
temperature may be colder
during the winter months
● This is normal. The colder inlet water takes longer to
heat.
Not enough air exchange
for Ecient Heat Pump
Operation.
● If air temperature drops more than 15°F (8°C) during
Heat Pump Operation, more air circulation around
heater is needed.
Water is too hot
The thermostat is set too
high.
● See the Temperature regulation of the water heater
section of this manual
!
CAUTION: For your safety DO NOT attempt repair of electrical wiring, thermostats, heating elements or
other safety devices. Refer repairs to qualified service personnel.
26
The water heater will make an audible beep for notification of Alarms and icon.
The following steps should be used in determining the Alarm code:
1) Press "Next" button until
"Current Alarm" is visible.
2) Press "Down" arrow button
to scroll through the active
alarms.
Troubleshooting Tips
Save time and money! Review the charts on this section first and you may not need to call for
service.
Troubleshooting Alarm Codes
!
27
Code Troubleshoong Guide Possible Causes What to Do
A004 Comp.Shutdown: Discharge-Sucon Trip
Heang source defaults to elements
due to compressor malfuncon
1. Conrm fan is operaonal while
compressor is on. (If the fan is not
operaonal, check connuity from
middle(ground)terminal to either
outside terminal. If there is a 110V
or higher reading, the fan should be
running and will need to be replaced. If
not, replace the control board.
2. Conrm lter screen is clean.
3. Inspect compressor and surrounding
components for any obvious signs of
refrigerant leak (oily residue) If the
compressor is not operaonal or there
are signs of leakage, the unit will need
to be replaced as we do not service
sealed system parts.
A005 Compressor Shutdown: Discharge Temp High
T005 Compressor Shutdown: Discharge Temp High
Heang source defaults to elements
due to low airow
A006 Sucon Temperature Too Low
Heang source defaults to elements
due to compressor malfuncon
T006 Sucon Temperature Too Low
A008 Detected Dry Fire Condion
Dry re protecon- Not sucient
water in storage tank: Heater
disabled
1. Fill storage tank with water.
2. Purge all air from the storage tank by
running a hot water faucet (This is gen-
erally an installaon issue and indicates
there is air in the tank.) If the unit is sll
displaying the A008, air is sll present
and should be purged again. Any issues
with the board or sensors would exhibit
a dierent alarm code.
T009 Compressor wiring may be faulty
Heang source default to elements
due to compressor malfuncon
1. Check connecons of the wiring and
sensors.
2. Get an Ohm reading on the thermistors
(if mulmeter is available) (See Ohm
chart for correct readings based on
ambient temperature).
3. Check on display by selecng Service--
>Sensors-->If sensor shows - 40°F, the
circuit is open. +250°F indicates the
circuit has shorted. Note: To conrm
reading, power down the unit and
unplug the thermistor from the board.
Check Ohm reading. (See ohms chart)
A009 Compressor wiring may be faulty
A101 Sucon Temperature Sensor Failure
Heang source defaults to elements
due to heat pump temperature sen-
sor malfuncon
A102 Ambient Temperature Sensor Failure
A103 Lower Heater Temp Sensor Failure
Lower tank temperature sensor
malfuncon. Heater disabled.
A104 Upper Heater Temp Sensor Failure
A105 Evaporator Temp Sensor Failure
Heang source defaults to elements
due to heat pump temperature
malfuncon.
A106 Discharge Temp Sensor Failure
A107 Water Detected on Floor: Check For Leaks Water is detected in the drain pan
1. Check for obvious water leaks (If leak is
present, service for unit leakage).
2. If obvious leakage is not present,
disconnect rope sensor from the board
and if the code is no longer present, dry
(a blow dryer is an acceptable method)
or replace rope sensor.
3. If error is sll present once the rope
sensor has been replaced, the board
will need to be replaced.
4. Press and hold the "Clear Alarm" but-
ton for 5 seconds to override the alarm
for 24 hrs.
A108 Condensate Blocked: Unclog Line
Heang source defaults to elements
due to condensate drain blockage
1. Remove top cover from tank
2. Visually inspect to ensure condensate
line is clear and there is not excessive
condensate in condensate pan
3. If water is present, locate blockage and
unlock.
4. Ask customer to where the condensate
is being routed 5. If pan is dry and no
blockage is present, replace condensate
sensor.
28
Troubleshooting Alarm Codes
Code Troubleshoong Guide Possible Causes What to Do
A125 Lower Element Error or Relay Stuck Closed
Heang element or control board
failure. Heater disabled.
Disconnect power to unit 2. Check
resistance on element per included Ohm
Reading Chart 3. If acceptable ohm reading
is present, replace board 4. If ohm reading
is not as it should be per included chart,
replace
A126 Upper Element Error or Relay Stuck Closed
A127 Element Wire Roung Error
Elements mis-wired or control
board failure. Heater disabled.
1. Disconnect power to unit.
2. Check wiring connecon to heang
element.
3. Ensure both wires are properly con-
nected at element and board.
4. Check ohm reading on heang element
if wires are properly connected.
5. Of acceptable ohm reading is present,
replace board. If not, replace element.
A128 Lower Element Relay Failure to Close Error
Control board relay failure. Heater
disabled.
1. Disconnect power to unit.
2. Check wiring connecon.
3. Check ohm reading if wires are properly
connected.
4. Of acceptable ohm reading is present,
replace board. If not, replace relay.
A129 Upper Element Relay Failure to Close Error
A130 Unit O/Air Temp Freezing: Enable Unit
Ambient temperature is below
freezing. --FREEZE WARNING
Select mode to enable heater (Turn it on).
T131 Clean Filter Reminder
Air lter roune maintenance
reminder
1. Set mode to Electric or OFF.
2. Remove air lter and clean by washing
with a mild detergent.
3. Dry air lter and reinstall.
4. Set unit to desired mode.
T132 Water Heater diculty sasfying demand
Water heater can not sasfy de-
mand
1. Check for open faucets.
2. Check for water leaks.
3. If none present, unit may be improperly
sized.
A120 Shuto Valve Can’t Close Error
Shut-O Valve malfuncon
1. Check connecons of the wiring.
2. Unplug and plug back the Shut-O
valve.
3. If alarm persist, call customer service.
A121 Shuto Valve Can’t Open Error
A122 Shuto Valve Inputs in Error
A123 Shut-O Valve Not Installed
A200 High Water Temp! [ECO] Call Tech Service ECO Tripped. Heater Disabled
1. Disconnect power to unit.
2. Check elements from screw to ground.
3. Check resistance to thermistors.
4. If the issue is neither the elements or
thermistor, replace board.
T300 Water Leak Sensor Not Installed Water Leak Sensor Not Installed
1. Check to ensure water leak sensor is
installed.
2. Check wiring connecons to sensor
from board.
3. Check resistance to sensor to deter-
mine whether sensor or board should
be replaced (See ohm reading chart for
correct readings).
29
Code Troubleshoong Guide Possible Causes What to Do
A502 Time Clock needs to be programmed
Controller malfuncon. Heater
disabled.
Replace Control Board
A503 Time Clock not advancing me properly
T504 WiFi Chip Communicaon Error
A900 Controller Fault: Call Tech Service
T901 Controller Fault: Call Tech Service
A902 Controller Fault: Call Tech Service
A903 Controller Fault: Call Tech Service
A904 Controller Fault: Call Tech Service
A905 Controller Fault: Call Tech Service
A906 Power Board Temp. Protecon Sensor Failure Controller geng too hot.
30
CTA Module Wiring
A separate branch circuit with copper conductors, overcurrent protective device
and suitable disconnecting means must be provided by a qualified electrician.
All wiring must conform to local codes or latest
edition of National Electrical Code ANSI/NFPA
70.
1. Use an appropriately sized wire nut to
connect the Red wire of the CTA module
box to the Red wire of the Water Heater
connection.
2. Use an appropriately sized wire nut to
connect the Black wire of the CTA module
box to the Black wire of the Water Heater
connection.
3. Use the ground screw to connect the green
wire of the CTA module box to ground.
4. The water heater is completely wired to the
junction box inside jacket at the top front of
the water heater.
*Note: A CTA2045 compliant Module
can be connected to the water heater’s
top connector. Follow the instructions
from the CTA2045 Module supplier to
connect.
Water Heater Junction Box
Junction
Box Cover
Ground
Screw
Wire
Connections
CTA Adaptor
(Not applicable
for all models
Conduit
connector
31
JA13 Offline Schedule Setting & Battery Replacement
Front Cover
BR2032 Battery
Control Board Assembly
Before uploading and enabling JA13
offline schedule (Utility Contractor
Only):
1. Power ON Water Heater.
2. Press, hold for 5 seconds and release the
WiFi button.
3. WiFi LED will start to blink when it is ready
to start WiFi setup.
4. WiFi signal will start to broadcast for
30 minutes and user can use the EcoNet
Contractor Portal and Contractor Application
to setup JA13 Offline Schedule.
5. If setup is not completed in the next 30
minutes, WiFi will stop broadcasting. User
should go to these steps again to re-start WiFi
setup.
6. Once setup is completed, the Demand
Response Icon will light up which will
indicate the Water Heater is following a
schedule.
To override JA13 offline schedule:
1. The user can override the JA13 offline
schedule for 72 hrs by pressing the MODE
button and changing the Mode of operation
of the water heater to the user desired Mode
and set-point.
2. Once the user override Time elapses, the
Demand Response will continue to follow
the predetermined schedule.
3. To completely opt-out from JA13 scheduling,
contact your utility company.
To replace the battery follow these
steps:
1. Remove the front cover of the Control
assembly.
2. Remove the BR2032 battery from the battery
holder.
3. Replace the battery with an approved
BR2032 cell coin battery.
4. Re-Install the front cover of the Control
assembly.
32
Demand Response (CTA-2045/JA13) Installations
A thermostatic mixing valve conforming
to ASSE 1017 shall be installed on the hot
water supply line following all manufacturer
installation instructions (mixing valve is not
included with the unit).
Hot Water Outlet
Cold Water Inlet
3/4" Tempered
domestic hot water
supply to house
Nominal 3/4" size mixing or tempering
valve (refer to warning above). Follow
mixing or tempering valve manufacturer's
instructions for installation of the valve.
33
Air Filter
Capacitor
Inlet Diuser
Tube
Outlet
J-tube
Temperature &
Pressure Relief valve
Drain
Valve
Shuto Valve
Upper Thermistor
& ECO
Cavity
Covers
Element
Controller
Assembly
CTA Module
Element
Bracket
Element
Covers
Faceplate
Replacement Parts.
Instructions For Placing a Parts Order
Address parts orders to the distributor
or store where the heater was
purchased.
All parts orders should include:
The model and serial number of
the water heater from the rating
plate located on the tank jacket.
Specify voltage and wattage as
marked on the rating plate.
Part description (as noted below)
and number of parts desired.
WARNING!
FLAMMABLE CONTENTS UNDER PRESSURE. The
compressor is not a serviceable part. The compressor wiring
terminals may arc allowing pressurized refrigerant and oil to
escape, ignite and cause serious bodily injury, severe burns or
death.
!
CAUTION: For your safety DO NOT attempt repair of
electrical wiring, heating elements, heat pump or electronic
controls. Refer repairs to qualified service personnel.
* NOTICE: Check the water heater's rating label on the
front of the unit for the acceptable element wattage.
34
Part Number Description
AP20142 Air Filter
AP11526S-2
AnodeAP11526T-2
AP11526W-2
AP20205 Capacitor (15 uf)
AS48043
Cavity CoverAS38409-1AE
AS48043-AE
AP16602 Cavity Cover Foams
AP20947A
Characterization Plug - HPWH
AP20947B
AP20947C
AP20947D
AS48812 CTA
AP17940-1
Condense Sensor
AP20946
AP21769
Controller assembly Gen V
(without battery)
AP20624
Cover CTA
AP20625
AS48692
Cover Junction
AS48693
AP20612 Cover Lower Element
AP21098
Current Sensing
Transformer
AP15182-1 Cover-Thermostat HPWH
AP16800D
Drain Valve
AP16830D
AP18708JL Element 2.25Kw
Part Number Description
AP10869ML-7 Element 4.5KW
AS48782 Fan Assembly
AP17392-2
Gasket
AP6708-9
AP17552-1
AP21208
AP13448A
AP16581A Inlet Diuser Tube
AP21365 Inlet Duct Adapter
AP20620
Motor
AP20519
SP17829 Outlet Duct Adapter
AP8878N-1 Outlet Tube
AP19147D PFW Sensor Wick
AP18087 Thermistor
AP18944C
Rope Water Sensor
AP18944D
AP19134 Rope Water Sensor 2 FT (HPWH)
AP14837G T&P Valve
AP20439 Thermistor Bracket
AS23557 Thermostat Bracket
AP20180 Shuto Valve
AP20590
Wire Harness
AS48675
AP20584
AP20509
Replacement Parts.
35
Cavity Insert Instructions
The following instructions are intended for qualified
service personnel ONLY, and should only be done
when necessary.
In order to replace the ECO,thermistor or heating
element, remove the cavity insert crossbar by
following the instructions below:
Disconnect all power to unit before to
starting maintenance.
Remove the jacket access panel(s) and
insulation.
Rotate the crossbar up and down until it
breaks away from the remainder of the
cavity insert.
(See illustration to the left)
Discard the crossbar. It cannot and need not
be replaced.
Replace the ECO,thermistor and/or element
as necessary.
Replace the insulation, jacket access
panel(s) and plastic housing before turning
on the power to the water heater.
NOTICE: The cavity insert crossbar is
necessary for the manufacturing process only.
The removal of the crossbar will not interfere
with the operation of the water heater.
ECO
Reset
Button
36
Wiring Diagram
COMPONENT CODE
AT AMBIENT TEMPERATURE
CAP CAPACITOR
COMP COMPRESSOR
COND CONDENSATE SENSOR
DT DISCHARGE TEMPERATURE
ECO EMERGENCY CUT OFF
ET EVAPORATOR TEMPERATURE
EXV ELECTRONIC EXPANSION VALVE
FAN FAN
GND GROUND NUT ON TANK
NUT
JCT JUNCTION BOX
BOX
LE LOWER ELEMENT
LEAK LEAK SENSOR
PCB PROGRAMMED CONTROL BOARD
SOV AUTOMATIC SHUT OFF VALVE
ST SUCTION TEMPERATURE
TB TERMINAL BLOCK
TTL TANK TEMPERATURE - LOWER
TTU TANK TEMPERATURE - UPPER
UE UPPER ELEMENT
CS CURRENT SENSING
WIRING INFORMATION
LINE VOLTAGE
-FACTORY STANDARD
-FACTORY OPTION
-FIELD INSTALLED
LOW VOLTAGE
-FACTORY STANDARD
-FACTORY OPTION
-FIELD INSTALLED
REPLACEMENT WIRE
-MUST BE THE SAME SIZE AND TYPE OF
WARNING
-CABINET MUST BE PERMANENTLY
GROUNDED AND CONFORM TO I.E.C., N.E.C.,
C.E.C., AND LOCAL CODES AS APPLICABLE.
WIRE COLOR CODE
BK BLACK
BR BROWN
BL BLUE
GR GREEN
GY GRAY
OR ORANGE
PK PINK
PR PURPLE
RD RED
WH WHITE
YW YELLOW
LE
UE
ECO
3
1
2
4
GND
NUT
FAN
YW
BR
OR
BK
WH
BL
NO
COM
NO
COM
NO
COM
BK
RD
GR
BK
RD
JCT BOX
BK
RD
GR
COMP
R
S
C
RD PR
BR
CAP
RD
BR
EXV
BL
BR
BK
WATER HEATER
L1
L2
208-240V, 1 PH.
POWER
FAN
UE
ECONET
PORT
BK
BR
BK
RD
RD
RD
OR
RD
WH
GR
TTU
BL
BL
BR
ANODE
DEPLETION
BOARD
BL
GY
WH
BK
BR
YW
DISCHARGE TEMP
EVAP TEMP
AMBIENT TEMP
SUCTION TEMP
CONDENSATE
CURRENT SENSING
LCD
OVERLAY
WH
CTA-2045
LE
COMP
TTL
LEAK SENSOR GY
YW
LEAK DETECT GY
SOV OPEN GY
SOV CLOSED WH
SOV DETECT
MOTOR A OR
MOTOR B BL
GR
MODEL ID BK
GND
ANODE
ROD
*
ON SOME
MODELS ONLY
*
37
Notes
38
Notes
39
Notes
40
IF YOU NEED SERVICE
1. Should you have any questions about your new water heater, or if it requires
adjustment, repair, or routine maintenance, it is suggested that you first contact your
installer, plumbing contractor or previously agreed upon service agency. In the event
the firm has moved, or is unavailable, refer to the telephone directory, commercial
listings or local utility for qualified service assistance.
2. Should your problem not be solved to your complete satisfaction, you should then
contact the Manufacturer’s National Service Department at the following address:
800 Interstate Park Drive
Montgomery, Alabama 36109
Phone: 1-800-432-8373.
When contacting the manufacturer, the following information will be requested:
a. Model and serial number of the water heater as shown on the rating label located
on front of the water heater.
b. Address where the water heater is located and physical location.
c. Name and address of installer and any service agency who performed service on
the water heater.
d. Date of original installation and dates any service work was performed.
e. Details of the problems as you can best describe them.
f. List of people, with dates, who have been contacted regarding your problem.
3. Should you have any issue or need assistance with the WiFi Module/EcoNet App
then contact the EcoNet Customer Service:
Phone: 1-800-255-2388
Website: www.Rheem.com/EcoNet
