– 52 –
Evaporator Fan Not Running
Note:
• When no voltage at main control board, make certain to check for shorted fan motor (less
than 1k ohm between white and red or white and yellow). A shorted fan motor will
damage the replacement main board.
• To check fan speed, refer to evaporator fan speed information on page 20.
Open door and leave open
for 3 minutes to initiate liner
protection mode.
Does fan begin running?
Unplug refrigerator to reset
main control board.
Reconnect power. Warm
freezer thermistor to 70 F
and set temperature controls
to 5 and 5.
Did evaporator fan start?
NO
At the fan connector, check
for 13 VDC from the red to
white wire and 8 to 13 VDC
from the white to yellow wire.
Is the voltage correct for
both?
Unplug J2 connector on the
main control board. Check
for 13 VDC between pins
J2-3 and J2-4.
Is the voltage correct for
both?
Replace main
control board.
NO
NO
Repair wiring between
main control board and
evaporator fan motor.
YES
Replace
evaporator fan
motor.
YES
Check fan for obstruction.
Find obstruction?
NO
Remove
obstruction.
YES
Adjust settings and allow
24 hours to stabilize.
YES
Check thermistors
using thermistor
values or self-
diagnostic test 0-7.
Thermistors pass
Test?
Replace main
board.
YES
NO
YES
Check wiring
connections. If OK,
replace thermistor.
NO
To Next Page
Loading...
