GE TBG440ANDR, Technician Service Manual

Page: 25 / 141

Page 25
VII. FAILURE DIAGNOSIS
Phenomenon Failure Condition Inspection Part Causes Treatment Actions
Electric power 1. Power cord not being
engaged
·
Any power shut off or
melted fuse?
1. Broken main coil of the
motor.
·
Replace the
compressor
Compressor
2. Broken wiring of the
refrigerator.
·
Check & repairs
Relay Broken electrical heating
wire
·
Replace the relay
1. Button set at “OFF”
position.
·
Replace the control
switch
2. Poor practice
·
Replace the control
switch
Control Switch
3. Air leakage (freon).
·
Replace the control
switch
Electric current
meter remains
still
Defrost Switch 1. Poor practice
·
Replace the defrost
switch
1. Choking
·
Replace the
compressor
2. Short circuit between
motor
·
Replace the
compressor
Compressor
3. Broken auxiliary coil of
the motor.
·
Replace the
compressor
1. Poor practice
·
Replace the starter
Starter
2. Poor contacting point
·
Contacting point be
polished or replaced
with a new one.
Capacitor 1. Burnt out
·
Replace the capacitor
Instant power
stop of major
motor
Power 1. Abnormal voltage
·
Explanation for the
customer.
1. Poor practice
·
Replace the defrost
switch
Refrigerator fails
to operate
Defrost switch
fails to recover
or longer time
needed for
recovery
Defrost switch
2. Low room temperature
·
Explanation for the
customer.
CAUSES & TREATMENT OF REFRIGERATOR FAILURES