21-00-02
Page 21-04
December 1, 1978
1F3
CHART 2102. TROUBLESHOOTING (AIR CONDITIONING SYSTEM)
Door will not close when Faulty relay “K-2.” Replace relay.
air conditioner switch is
in OFF position.
System produces no Electrical
cooling.
Blown fuse in control Replace fuse.
head.
Open circuit breaker. Reset circuit breaker.
Broken or disconnected Check all terminals for
electrical wire. loose connections; cheek
wiring for hidden breaks.
Broken or disconneeted Cheek ground wire to see
ground wire. if loose, broken, or dis-
connected.
Clutch coil burned out or Check current flow to
disconnected. clutch, replace if in-
operative.
Thermostat sensing element Check thermostat and cabin
defective. comfort control panel.
Blower motor disconnected Check current flow to blower
or burned out. motor. Repair or replace if
inoperative.
Mechanical
Loose or broken drive belt. Replace drive belts and/or
tighten to specifications.
Compressor partially or Remove compressor for
completely frozen. service or replacement.
Expansion valve stuck in Replace expansion valve.
open position.
Trouble Cause Remedy
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL
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