17
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
Fan motor operates intermittently. 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.
Fan motor noisy.
Outside coil fan blade or inside
Check fan blade/blower wheel
coil blower wheel loose or improperly aligned.
for proper position. Reposition
if necessary.
Ensure hardware attaching fan
blade/blower wheel to motor
shaft is tight. Tighten if loose;
replace if stripped.
Worn fan motor bearings.
Check bearings for wear/loss
of lubricant. Replace motor if
either condition found.
Fan motor mounting hardware/bracket
Check mounting bolts/bracket
loose or grommets worn (if applicable).
for tightness. Tighten if
necessary.
Inspect grommets for wear.
Replace if necessary.
Compressor does not run,
Compressor lockout.
Lockout feature delays
fan motor operates normally.
compressor start up for 3–4
minutes under certain
conditions (see paragraph
Compressor Lockout
Feature).
Wire(s) disconnected or loose.
Ensure all connections are
tight and secure. Correct as
required.
Compressor motor capacitor faulty.
Check capacitor for open/
short. Replace if faulty.
NOTE: Discharge capacitor
before testing.
Compressor faulty.
Check compressor motor
windings for opens/shorts.
Check compressor seals.
Perform compressor direct
wiring test.
Replace compressor if
faulty.
