GE ZIC36ON Series Technical Service Manual page 44

Are the interior lights on? NO
YES
Unplug J2
connector from
main control
board.
Check for 12 VDC NO
at control board
pins J2-3 to J2-8.
Voltage present?
YES
Short in fan motor circuit.
Go to Fan flowchart.
Refrigerator Dead - No Sound, No Cooling
Check house supply voltage.
Is 120 VAC present?
YES
Check for 120 VAC at 3-pin
connector at the rear of the
unit.
Is 120 VAC present?
YES
Repair wiring
connections at
3-pin connector.
Unplug J4 connector from
main control board.
Check for 12 VDC at
control board pins J4-2 to
J4-3.
Voltage present?
YES
Unplug the temperature
control harness.
NO
Does the refrigerator
start once the harness is
unplugged.
YES
Replace temperature
control board.
House wiring
NO
Problem.
Repair or replace
NO
power cord.
Replace main
NO
control board.
Verify thermistors are
within proper range
using the thermistor
values chart.
Is the resistance
within range?
YES
Replace main
control board.
– 42 –
Note: Check all fan motor
circuits for shorts. If short
is detected, repair short or
replace fan motor.
Failure to replace shorted
component will damage
the new control board
upon installation.
Check wiring
connections. If wiring
YES
is OK, replace
thermistor.