RS4100004 Rev. 0
18
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
Compressor does not run,
Overload protector open.
Check protector for continuity.
fan motor operates normally.
If open, replace.
NOTE: Ensure compressor/
overload are below trip
temperature before testing.
Electronic control faulty.
Ensure all control connections
are tight and secure.
Check control for proper
operation. Replace if faulty.
NOTE: Eliminate all other
possible causes before
replacing electronic control.
Compressor cycles on and off.
Wire(s) disconnected or loose.
Ensure all connections are
tight and secure. Correct as
required.
Supply voltage out of specification.
Check input voltage for proper
levels. Take appropriate
action if voltage levels out of
specification.
Overload protector open.
Check protector for continuity.
If open, replace.
NOTE: Ensure compressor/
overload are below trip
temperature before testing.
Fan motor faulty.
Check fan motor for proper
operation. Replace if faulty.
Restricted 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.
Compressor motor capacitor faulty.
Check capacitor for open/
short. Replace if faulty.
NOTE: Discharge capacitor
before testing.
Sealed refrigerant system fault.
Test sealed system for proper
charge, leaks, and restrictions.
Repair as required.
