Jenn-Air JWC2450ARB Service Manual page 15

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
Excessive frost build-up
on evaporator (interior
temperatures are normal
and frost pattern is
uniform).
©2003 Maytag Appliances Company
CHECK
Condenser fan operation.
Condenser airflow
blocked or restricted.
Cabinet for proper sealing
(absence of air leaks).
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
Failed light activation
switch not turning off light
when switch is depressed.
Wiring connection to or
from light activation switch
improperly wired
bypassing switch.
Door light activation
switch over-ride switch in
the "on" position
permitting light to remain
"on" with door closed.
(Present on some but not
all models).
Condenser fan blade
jammed against shroud or
otherwise bound.
Wiring connection to and
from fan motor, terminal
block and thermostat
loose or incorrect
Condenser fan motor
failed
Condenser air flow
blocked by dirt, lint, trash,
etc.
Airflow in or out of toe
space grille restricted.
Exterior door of unit not
hanging straight
preventing proper gasket
sealing.
Door hinges bent
Air leaks at locations
where refrigerant or
thermostat line electrical
wiring or thermostat
capillary tubes enter
cabinet interior.
Door gasket torn or has
lost magnetism.
REMEDY
Replace light activation
switch.
Correct improper wiring
connection.
Place over-ride switch in
the "door" position. Verify
light goes out.
Correct loose or incorrect
wiring connections.
Correct loose or incorrect
wiring connections.
Replace condenser fan
assembly.
Clean condenser to
restore airflow.
Clear restriction to airflow
through toe space grille.
No obstruction to air flow
permitted in an area 3 feet
out from the grille.
Install door shim kit to
correct hang of door.
Install new hinge kit to
correct hang of door. Door
shims may also be
required. See hinge and
shim installation
instructions.
Seal around these entry
points with refrigeration
putty (permagum) to
eliminate air leaks.
Replace gasket if stiff, torn
or has stiff, torn or weak
magnetism.
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