Service & Parts Manual (2019, 2020, 2021, 2022)

60 PB
TROUBLESHOOTING
Tips Continued
Figure 711 (Troubleshooting Tips)
COMPLAINT CAUSE SOLUTION
Unit Does Not Cool/ Heat Room
Sufciently, or Cycles On And Off
Too Frequently (continued).
Operating in Cooling mode while the
outside temperature is below 60 °F
(16 °C).
Do not try to operate your air conditioner in the
cooling mode when the outside temperature is
below 60 °F (16 °C). The unit will not cool prop-
erly, and the unit may be damaged.
The digital control is set to fan cycling
mode.
Since the fan does not circulate the room air
continuously at this setting, the room air does
not mix as well and hot (or cold) spots may
result. Using the continuous fan setting is rec-
ommended to obtain optimum comfort levels.
The air conditioner has insufcient cool-
ing capacity to match the heat gain of
the room.
Check the cooling capacity of your unit to ensure
it is properly sized for the room in which it is in-
stalled. Room air conditioners are not designed
to cool multiple rooms.
The air conditioner has insufcient
heating capacity to match the heat loss
of the room.
Check the heating capacity of your unit. Air con-
ditioners are sized to meet the cooling load, and
heater size is then selected to meet the heating
load. In extreme northern climates, room air
conditioners may not be able to be used as a
primary source of heat.
Unit Runs Too Much.
This may be due to an excessive heat
load in the room.
If there are heat producing appliances in use
in the room, or if the room is heavily occupied,
the unit will need to run longer to remove the
additional heat.
It may also be due to an improperly sized
unit.
Be sure to use exhaust vent fans while cooking
or bathing and, if possible, try not to use heat
producing appliances during the hottest part of
the day.
Compressor does not run.
Low voltage
Check voltage at compressor. 115V units will
operate at 10% voltage variance
Temperature not set cold enough or
room air thermistor inoperative
Set temperature to lower than ambient position.
Test thermistor and replace if inoperative.
Compressor hums but cuts off on over-
load
Direct test compressor.
Open overload Test overload protector & replace if inoperative
Open capacitor Test capacitor & replace if inoperative
Inoperative power button
Test for continuity in all positions. Replace User
Interface if switch inoperative.
Broken, loose or incorrect wiring
Refer to appropriate wiring diagrams to check
wiring. Correct as needed.