Jenn-Air JWC2450ARB Service Manual page 16

Troubleshooting
!
WARNING
power to be connected. When removing any wiring from terminals they must be replaced on the same terminals.
Ensure all ground wires are connected before certifying unit as repaired and/or operational.
PROBLEM
Compressor, fan and
interior light do not
function.
Interior light functions but
compressor will not run.
Compressor runs; fan
does not run.
Fan runs, but compressor
does not run.
Interior light will not turn
off when door is closed.
12
CHECK
Power supply
Power cord and wiring
connections within unit
from power cord to
thermostat and terminal
block.
Compressor control
thermostat.
Fan motor and blade
assembly.
PTC starter
Wiring PTC start to
terminal start to terminal.
Compressor
Striker plate on bottom of
door.
Light activation switch.
16022323 Rev. 0
To avoid risk electrical shock, personal injury, or death,
always disconnect electrical power source to the freezer
before attempting to service, unless test procedures require
POSSIBLE CAUSE
Unit not plugged into
power outlet.
Fuse or circuit breaker
tripped.
Loose or incorrect wiring
connections at power
cord, thermostat input or
terminal block.
Compressor control
thermostat.
Wiring connections from
compressor control
thermostat to terminal
block loose or incorrect.
Fan blade jammed by
shroud, refrigerant line,
mount bracket, foreign
object, etc.
Fan motor failed
Connection loose or
incorrect on wiring from
fan motor to terminal
block.
Failed PTC starter.
Loose or incorrect wiring
connections at PTC
starter to terminal block.
Failed motor in
compressor
Compressor cycled off on
thermal overload
protection.
Striker plate not present
or not positioned properly
to depress light switch
when door is closed.
Failed light activation
switch.
REMEDY
Plug unit into power Plug
unit into power.
Replace fuse. Reset
circuit breaker. Correct
power supply problem.
Correct loose or incorrect
wiring connections.
Replace compressor
control thermostat.
Correct loose or incorrect
wiring connections.
Free fan blade so fan
operates freely.
Replace fan motor.
Correct loose or incorrect
wiring connections.
Replace PTC starter.
Correct loose or incorrect
wiring.
Replace compressor
Unplug unit. Allow
compressor to cool 30-45
minutes. Plug unit in. If
compressor starts, locate
cause of thermal overload.
May be power interruption,
system restriction, high
ambient temperature, or
fan/condenser blocked.
Replace or install striker
plate so light switch is
depressed when door is
closed.
Replace light activation
switch.
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