Fault Code Ht; Oven Not Heating - TurboChef FRE-1002D Service Manual

12 TROUBLESHOOTING
Ht is displayed on the upper temperature display and indicates that the temperature in
the controls compartment is too hot. The oven will beep when this error occurs.
Is the wiring from the
controls compartment
cooling fan to the control
board OK? (See page 15
for schematic.)
YES
Replace the control
board.
Use the following troubleshooting steps when the oven is not heating properly.
Is the high-limit
thermostat tripped?
YES
Reset and
determine
why it tripped
- excess grease
buildup, etc.
Troubleshooting: Fault Code Ht
YES
NO
Correct
the wiring.
Troubleshooting: Oven Not Heating
YES
NO
Is either
fuse open/
blown?
YES
Replace and
determine
why it/they
opened/blew.
Replace the
control board.
Correct wiring.
Is the controls
compartment cooling fan
operating properly?
Correct
the wiring.
Is the oven receiving
correct voltage from the
outlet?
NO Are either heaters defective?
YES
Replace the
defective
heater(s).
Replace the
contactor relay
YES
NO
Is the wiring from the
controls compartment
NO
cooling fan to the
contactor relay OK?
(See page 15 for
schematic.)
NO
YES
Replace the controls
compartment
cooling fan.
Verify that the breakers
are not tripped, the outlet
NO is not damaged, and that
the electrical supply is
suffi cient for the oven.
NO
Is the contactor
relay defective or
damaged?
YES
NO
Is the wiring from
the contactor relay
to the control board
OK? (See page 15
for schematic.)