Thermador SMW272 B User Manual

Page 71
SMW Oven Service ManualLower Oven Section
Example
Corrective
Action
Error
Code
FC
Communication error detected by
display head.
Lower oven relay board
not powered up.
Check all power con-
nections to the oven
relay boards and the
display head. Check all
communication connec-
tions to the oven relay
boards and the display
head.
Intermittent temperature
sensor or bad main relay
board.
Replace temperature
sensor. If control still
displays FF, replace
main relay board.
Communication error detected by
main relay board.
Bad display head.
Check all power con-
nections to the oven
relay boards and the
display head. Check all
communication connec-
tions to the oven relay
boards and the display
head.
Fr
F-
FF
Bad analog-to-digital (A/D) converter.
Cause
Invalid door lock switch status (lower
oven).
Defective or jammed
lower oven latch
switches.
Bad display head.
Intermittent lower oven
temperature sensor or bad
lower oven relay board.
Make sure lower oven
latch switches are oper-
ating properly.
Check all power and
communication connec-
tions to the oven relay
boards and the display
head.
Replace lower oven
temperature sensor. If
control still displays Fr,
replace lower oven re-
lay board.
Communication error detected by
main relay board.
Element supervisor is disabled (lower
oven).

Thermador SMW272 B Specifications

General

Brand	Thermador
Model	SMW272 B
Category	Oven
Language	English