Sharp AF-05CML Service Manual page 14

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