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SEQUENCE OF OPERATION
With power supplied to indoor and outdoor units, When thermostat is satisfied, its contacts open,
transformer is energized, de-energizing contactor and blower relay. Compressor
and motors stop.
On a call for cooling, the thermostat makes circuits R-Y
and R-G. Circuit R-Y energizes contactor, starting NOTE: If indoor unit is equipped with a time-delay relay
outdoor fan motor and compressor. Circuit R-G circuit, the blower runs an additional length of time to
energizes indoor unit blower relay, starting indoor blower increase system efficiency.
motor.
TROUBLESHOOTING
Some models are factory equipped with the Comfort
Alert TM Diagnostics device in the control box (refer to
Figure 12). Comfort Alert provides around-the-clock
monitoring for common electrical problems, compressor
defects, and broad system faults. If trouble is detected, an
alert code is displayed with a flashing LED indicator. Alert
codes are listed in Figure 13.
The device is factory wired and requires no
modification. Low voltage lead wires are provided in the
control box for connection to thermostat wires (use wire
nuts).
The Comfort Alert device operates by monitoring the
compressor power leads and the thermostat demand
signal (Y terminal).
Comfort Alert TM Diagnostics
Figure 12
(some models)
Compressor Wires
Through Holes (3)
MAINTENANCE
Condensate Drain
During the cooling season, check monthly for free flow of
drainage and clean if necessary.
Cleanliness
These tips will help keep the air conditioner looking better
and working more efficiently:
,
,
,
Free flow of air is essential. Keep fences, shrubs,
trash cans, and other obstructions at least 18
inches (457mm) from all coil inlets.
Keep the coil free of grass clippings, leaves,
weeds, and other debris.
NOTE: Coil may occasionally require cleaning with
a liquid solution. The coil must be cold when
cleaning. Use an alkaline based cleaner only.
Cleaning a hot coil or using an acid based cleaner
will remove the paint from the fins and may clog the
coil.
Never use a weather cover over the outdoor unit
unless it is a ventilated type or made of breathable
fabric that will allow moisture to evaporate rapidly.
A cover that holds moisture in the unit will cause
more rust build-up and damage than normal
exposure to weather.
421 01 5002 01 13
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