Thermador SMW272YB Training Program page 93

S, SM, and SMW Oven error code messages
Error code Possible cause
displayed
F1 Element supervisor enabled
F1, F7 Poor
alternating display head and touch panel
F2 Over temperature detected
F3 Open oven sensor
F4 Shorted oven sensor or sensor
temperature below 40ºF
F5 Element supervisor is disabled
(single or upper oven)
F7 Display head detected a stuck
key (on electronic touch pad)
connection between
Example
Bad relay board
Old membrane ribbon
cable
Intermittent sensor or
bad main relay board
Open sensor or circuit
wiring
Shorted oven sensor
wiring
Intermittent sensor or
bad relay board
Bad connection between
display head and touch
panel
Corrective Action
Replace main relay board.
Replace display head kit & main
relay board (see note 1).
Check sensor and connectors. If out
of spec, replace sensor. If F2 still
displays, replace main relay board
(see note 2).
Check oven sensor from Molex plug
on relay board – should read 1050 Ω
at room temperature (see note 3).
Check oven sensor wiring – should
read 1050 Ω at room temperature
(see note 3).
Check oven sensor wiring (see note
3). If new sensor still displays F5,
replace main relay board.
Replace display head kit. If problem
persists, replace touch panel (see
notes 1 & 4).
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