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WARNING
HIGH VOLTAGE
DISCONNECT ALL POWER BEFORE SERVICING
OR INSTALLING THIS UNIT. MULTIPLE POWER
SOURCES MAY BE PRESENT. FAILURE TO DO SO
MAY CAUSE PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
Routine Maintenance
Performing Routine Maintenance
With the proper maintenance and care, your system will
operate ecomomically and dependably. Maintenance
can be accomplished easily by referring to the following
directions. However, before performing any maintenance,
see above stated WARNING.
CAUTION
CUT / SEVER HAZARD
SOME EDGES MAY BE SHARP, USE GLOVES
OR OTHER HAND PROTECTION WHEN
HANDLING UNIT.
FAILURE TO DO SO CAN RESULT IN MINOR TO
MODERATE PERSONAL INJURY.
Replace Air Filter
A dirty air lter reduces the efciency of the VTAC and
allows lint and dirt to accumulate on the indoor-air coil. Lint
and dirt on the indoor-air coil can damage your unit.
The air lter should be replaced as it becomes dirty.
To replace the lter (chassis mounted return air lter):
1. Slide the lter clear of the lter rails.
2. Remove the lter.
3. Install new disposable lter.
NOTE: DO NOT OPERATE YOUR SYSTEM WITHOUT
A FILTER IN PLACE OR BLOCK THE FRONT OF THE
UNIT RETURN AIR OPENING.
To Remove the Chassis from the Closet:
A. Switch the wall thermostat off.
B. Pull the Power Disconnect located in the front of the
chassis.
C. Disconnect the power coming into the unit from
the main breaker panel or the closet mounted
disconnect.
D. Disconnect the electrical connection.
E. Disconnect the duct work.
F. Slide the chassis out of the wall adapter.
G. Lift the chassis out of the utility closet.
Inspect and Clean Indoor-air Coil
Eventually, minor amounts of lint and dirt may pass
through the lter and collect on the indoor-air. These minor
accumulations can be carefully vacuumed away with a
brush attachment on a vacuum claner. Care must be taken
to avoid bending the aluminum nns on the coil. Bent ns
should be straightened using a special n tool avalable
from most HVAC supply depots.
Inspect Outdoor-Air (OA) Intake and Exhaust
The unit’s outdoor-air intake and outdoor-air exhaust paths
must remain clear. Check the OA exhaust frequently. Keep
it free of all debris, snow, or ice. The OA intake should also
be kept free of obstructions. Blocking the OA exhaust or
OA intake opening will reduce the efciency of your unit
and could damage it.
Inspect and Clean Condensate Drain
The condensate drain must be routed to a suitable
drainage area. Check the unit condensate drain
periodically. Keep it free of anything that may block or
impede the ow of condensate water. If there is any
accumulation of foreign matter in the drain pipe, it should
be removed and cleaned. The entire drain line must be
protected from freezing.
Warranty
All warranty service work must be done by an authorized
servicer. See Product Warranty, and consult your dealer or
contractor for details.
Electronic Control Error Code Diagnostics
and Test Mode
Error Code Diagnostics
The VTAC electronic control continuously monitors the
VTAC unit operation and will store error codes if certain
conditions are witnessed. In some cases the unit may take
action an shut the unit off until conditions are corrected.
To access the error code menu press the ‘ENTER’ button.
If error codes are present they will be displayed. If multiple
codes exist you can toggle between error codes using the
‘SCROLL’ button. To clear all codes press the ‘ENTER’
and ‘SCROLL’ buttons for three seconds while in the error
code mode. To exit without losing codes press the “LOW
FAN” button.
17
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