THE NEW PIPER AIRCRAFT, INC.
PA-32-301FT / 301XTC
MAINTENANCE MANUAL
PAGE 4
Jun 1/03
2C16
21-50-00
CHART 1 (Sheet 2 of 5)
TROUBLESHOOTING AIR CONDITIONING SYSTEM
Trouble Cause Remedy
High suction pressure. Capillary bulb clamp loose on Clean contact surfaces of
suction line. Suction line shows suction line and cap bulb.
frost. Tighten clamp.
Expansion valve not closing. Replace expansion valve.
Evaporator flooded. Suction line
frosted to compressor.
Compressor drive belt slipping. Adjust belt tension.
Magnetic clutch slipping. Check electrical circuit for
proper voltage to clutch
coil. Clean oily clutch
surfaces.
Leaking or broken compressor. Replace compressor
valves.
Condenser door will not close Faulty K-2 relay. Replace relay.
when air conditioner switch is
in OFF position.
System does not cool. If electrical:
Blown fuse in control head. Replace fuse.
Open circuit breaker. Set circuit breaker.
Broken or disconnected Check all terminals for
electrical wire. loose connections. Check
wiring for hidden breaks.
Broken or disconnected ground Check ground wire is not
wire. loose, broken, or
disconnected.
Clutch coil burned out or Verify voltage to clutch.
disconnected. Replace if inoperative.
Thermostat sensing element Check thermostat and
defective. cabin comfort control
panel.
Blower motor disconnected or Verify voltage to blower.
burned out motor. Repair or replace if
inoperative.
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