Overview Of Troubleshooting; Fault Code Descriptions - TurboChef 2020 Service Manual

Overview of Troubleshooting

This section contains information on the
following:

- Fault code descriptions

- Fault code troubleshooting
- Non-fault code troubleshooting
Fault Code Descriptions
Fault codes are logged in a fault counter (page
15) for troubleshooting. Upon completing the
service call and restoring successful operation of
the oven, the technician should clear all faults
(see page 20).
F1: Blower Failure
This fault is displayed if for three consecutive
times the control board does not receive the
"status OK" signal from the BMSC.
The fault is cleared from the display if the
blowers successfully restart upon starting a cook
cycle or in .
TEST MODE
F2: Low Temp During Cook
The oven will emit a beeping noise and display
this fault if the cook cavity temperature falls
25°F (14°C) below the current cooking profile's
set temperature, and the fault will be logged in
the fault counter.
The fault is cleared from the fault display if the
cook cavity temperature returns to within 25°F
(14°C) of the set cooking temperature during
cooking or in
TEST MODE
F4: Emergency Stop
This fault is displayed when the emergency stop
key is pressed.
This fault acts as a counter that logs how many
times the emergency stop key (page 9) has been
pressed.
The fault is cleared from the display once the
oven is restarted.
.
F5: CC Over Temp
This fault is displayed if the cook cavity's tem-
perature reaches or exceeds 625°F (329.4°C).
The fault is cleared from the display once the
oven is restarted and the temperature recedes
below 625°F (329.4°C).
F6: EC Over Temp
This fault is displayed if the temperature within
the electrical compartment reaches 149°F
(65°C); however, the oven will not shut down
and the fault will not be logged in the fault
count log unless it reaches 158°F (70°C).
The fault is cleared from the display when the
electrical compartment temperature recedes
below 149°F (65°C).
F7: RTD Failure
This fault is displayed if the RTD circuit is
open, shorted, reads above 645°F (340.5°C), or
reads below -40°F (-40°C).
The fault is cleared from the display if the RTD
circuit is closed, or the temperature reads within
645°F (340.5°C) and -40°F (-40°C)
F8: High Limit Tripped
This fault is displayed if the high limit switch
trips. The switch trips when the high limit
probe reads approximately 600°F (315.5°C).
The fault is cleared from the display when the
high limit switch is manually reset.
F9: Belt Fault
This fault occurs if the conveyor belt fails to
start or the conveyor is dragging.
The fault is cleared from the display if the
conveyor belt starts when initiating cooking.
2 5