TurboChef FRE-1002D, Service Manual, Page: 27 / 40

TROUBLESHOOTING
11
Is the upper RTD
operating properly?
Resistance of
approximately 4 Ω at
room temperature.
Is the lower RTD
operating properly?
Resistance of
approximately 2 Ω at
room temperature.
Troubleshooting: Fault Code Er1
Er1 is displayed on the upper temperature display and indicates a damaged upper
RTD. The oven will beep when this error occurs.
Troubleshooting: Fault Code Er2
Er2 is displayed on the lower temperature display and indicates a damaged lower RTD.
The oven will beep when this error occurs.
Correct
the wiring.
Correct the wiring.
Replace the defective
heater element. Replace the control
board.
Is the top heater
element defective?
Resistance of
approximately 30 Ω
at room temperature. Is the control board
operating properly?
Is the control board
operating properly?
Ensure wiring is correct.
If necessary, replace the
upper RTD.
Ensure wiring is correct.
If necessary, replace the
lower RTD.
Replace the RTD.
Replace the RTD.
Is the wiring from the
upper RTD to the control
board OK? (See page 15
for schematic.)
Is the wiring from the
lower RTD to the control
board OK? (See page 15
for schematic.)
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
Replace the defective
heater element. Replace the control
board.
Is the bottom heater
element defective?
Resistance of
approximately 24 Ω
at room temperature.
NO
YES