14
AF-05CML
Symptom
Check
Defect
Remedy
Fan motor runs but
compressor doesn't
operate
Compressor trys to start
With switch set for cooling,
fuse or circuit breaker
open
1) No current runs.
(Compressor circuit)
2) Current runs.
(Below operating current,
capacitor normal)
1) Slector switch defective
1) Change switch
4) Compressor coil burnt out
5) Wiring disconnected or burnt
out
3) Change compressor
1) Compressor (main winding)
burn out
4) Connect or change wiring
2) Switch contact defective
3) Change overload relay
1) Change compressor
3) Overload relay contact burn
out
2) Solder
3) Change lead wire
Change compressor
Change switch
2) Heat source near to air
conditioner
3) Partial restriction in sealed
system
1) Compressor locked
2) Compressor (Auxiliary
winding) burn out
3) High current draw
4) High current draw
compressor operates but
stops immediately
1) Check power source voltage,
start voltage drop
2) Check power source voltage
4) Insulation test on compressor
5) Insulation test on switch
2) Remove heat source
Repair
3) Overload relay defective
2) Change overload relay
1) Change compressor
2) Change switch
1) Check power line fuse or
circuit breaker
1) Power source voltage too
low
2) Wiring for power supply
equipment too small
1) Insufficient capacity of fuse
2) Circuit breaker "OFF"
Power source cut off or contact
defective
1) Compressor locked
2) One connection terminal of
compressor burn out
3) One core of lead wire of
compressor burn out
Insulation defective
Insulation defective
1) Change compressor
2) Change compressor
4) Change capacitor
5) Change compressor
1) Change compressor
3) Check sealed system
2) Circuit breaker "ON"
1) Improve the power supply
equipment
1) Change to rated fuse
2) Improve the power supply
equipment
2) Thermostat defective
1) Change thermostat
4) Capacitor defective
5) Compressor winding short
1) Compressor winding short
3) Check compressor
Fan motor doesn't operate
with "Selector switch" set
at "Fan only"
1) Check select switch or micro
switch contact
1) Switch contact burn out
1) Change switch
3) Check
a. Current exceeds rated one
b. Motor lead wire
2) Check
a. Fan capacitor
b. Power cord
c. Fan motor
2) Switch contact defective
3) Switch cam defective
4) Wiring to terminal defective
or improper
1) Fan capacitor defective
2) Power supply voltage is too
low
3) Fan motor defective
1) Fan motor bearing locked
2) Polish contact
3) Change switch
4) Change or correct wiring
1) Change capacitor
2) Improve power supply
equipment
3) Change fan motor
1) Change motor
2) Change or repair lead wire
2) Fan motor lead wire burn out
