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Thermador®
S, SM, AND SMW Oven Error Code Messages…continued
Error Code
Displayed
Probable Cause
Example
Corrective Action
F8 Shorted meat probe (No probe is used
on these models)
Main power/relay Replace main power/relay board
F9
Invalid door lock switch status (Single
or upper oven)
Stuck latch switches
Check latch and switches for proper
operation, replace if necessary.
FC
Communication Error Detected by
display head.
2
nd
power/relay board
not power up
Check cables and harnesses used between
the main and 2
nd
power/relay boards.
Check connections between the 2
nd
power/relay board and the control head. If
FC is still displayed, replace 2
nd
power/relay board. Replace the display
head next if FC is displayed. If FC is still
displayed after replacing the control head,
change the main power/relay board.
FF
Bad analog/digital converter
Intermittent Sensor or
main power/relay
board
Replace temperature sensor. If control still
displays FF, replace main power/relay board.
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