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If at any time the temperature of the outdoor coil sensor drops
below -17 degrees C, the unit will be shut down completely
and an auxiliary heat source must be used. If this occurs, the
III. SERVICE PROBLEMS AND POSSIBLE SOLUTIONS
Problem:
Unit does not start
Likely Causes
Main power supply
Power at unit
Blower or Compressor
Compressor check
Compressor windings
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Problem:
Unit powers up but compressor does not start
Likely Causes
Run Capacitor
Compressor Overload
Freeze Switch
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Problem:
Low air flow from ceiling assembly
No air flow from ceiling assembly
Likely Causes
Indoor Blower
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Problem:
Poor performance in either cooling or heating mode
Likely Causes
Outdoor coil is partially
blocked by debris such
as leaves, etc.
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Correction
Check circuit breaker and ensure that there is power to the unit.
Unscrew and disconnect ceiling assembly (see installation manual). Check to ensure that there
is power at the main power cable going into the unit.
The fault is in either the indoor blower or compressor. Check to see which part is defective.
Main Winding – 4.4 Ohms @ 25C
Start Windings – 6.8 Ohms @ 25C
Replace if faulty.
Correction
Check run capacitor inside of electrical box situated under condenser fan (See Figure 3). Replace
if defective.
Check compressor overload switch on compressor. Replace if defective.
Check freeze switch to ensure that the contacts are closed.
Correction
Power off unit, remove shroud, inspect wiring and check that the amp draw (see data sticker
for amp draw).
Power off unit, remove shroud, inspect wiring and check that there is power arriving at the
motor. Check capacitor and replace if defective. If capacitor is good, replace blower motor.
Correction
Power off unit, remove shroud and clean outside coil.
unit will resume operation only when the outdoor coil sensor
temperature reaches 1 degree C or higher.
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