Piper ARROW III Service Manual page 571

CHEROKEE ARROW III SERVICE MANUAL
TABLE XIV-IV. TROUBLESHOOTING CHART (AIR CONDITIONER) (cont)
Trouble
System produces no
cooling. (cont)
Revised: 2/13/89
Cause
Electrical (cont)
Thermostat sensing
element defective.
Blower motor disconnected
or burned out.
Mechanical
Loose or broken drive
belt.
Compressor partially
or completely frozen.
Expansion valve stuck
in open position.
Refrigeration
Broken refrigerant
line.
Leak in system.
3B19
Remedy
Check thermostat and
cabin comfort control
panel.
Check current flow to
blower motor. Repair
or replace if inoperative.
Replace drive belts
and/or tighten to
specifications, 14-22
and 14-23.
Remove compressor for
service or replacement,
14-18.
Replace expansion
valve, 14-35.
Examine all lines for
evidence of breakage
by external stress or
rubbing wear.
Evacuate system, apply
static charge, leak test
system, and repair leak
as necessary, 14-13 and
14-9.
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