21
RS4100004 Rev. 0
Troubleshooting Information
!
WARNING
To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit and
discharge capacitor through a 10,000 ohm resistor before attempting to service, unless test procedures require
power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or
operational.
Symptom
Possible Causes
Corrective Action
Wattage slowly decreases below
Undercharged, restricted strainer or plugged
Test sealed system for proper
minimum specification.
capillary tube.
charge. Ensure system is free
of leaks/blockage. Repair as
required. Evacuate/recharge
sealed system.
Wattage decreases immediately.
No refrigerant.
Test sealed system for proper
charge. Ensure system is free
of leaks. Repair as required.
Compressor faulty.
Check compressor motor
windings for open/shorts.
Check compressor seals.
Perform compressor direct
wiring test.
Replace compressor if
faulty.
Wattage continuously high.
Refrigerant overcharge.
Test sealed system for proper
charge. Repair as required.
Evaporator coil partially frosted.
System low on refrigerant.
Test sealed system for proper
charge. Ensure system is free
of leaks. Repair as required.
Restricted capillary tube.
Replace capillary tube.
Insufficient air flow.
Inspect air filter, indoor/
outdoor coil for dirt. Clean as
required. Check fins on coils
for damage. Straighten fins if
bent, attempt other repairs as
necessary. Replace faulty
coil if repairs cannot be
made.
Faulty fan motor
Check fan motor for proper
operation. Replace if faulty.
Evaporator completely iced.
Low outside temperature.
Turn unit off.
(Consumer education)
Restricted capillary tube.
Replace capillary tube.
Insufficient air flow.
Inspect air filter, indoor/
outdoor coil for dirt. Clean as
required. Check fins on coils
for damage. Straighten fins if
bent, attempt other repairs as
necessary. Replace faulty
coil if repairs cannot be
made.
