Thermador SMW272YB Training Program page 95

S, SM, and SMW Oven error code messages
Note
1 F1 & F7 errors are caused by a loss of communication
between the display head and the touch panel.
migrates to affect the connector on the display head. The
new relay board # 35-00-760 has been reprogrammed to
keep the cooking fan on until internal oven temperature
reaches 300ºF.
2, 3 Check sensor by taking resistance reading from Molex
plug on main relay board. A good sensor will read ~
1050 Ω at room temperature (75ºF). Replace sensor if
out of tolerance by ± 100 Ω or more. Make sure butt
splices are in the air channel and not stuck in the
insulation or against the oven liner.
4 The touch panel is an electronic switching device, so it
doesn't have actual keys to stick. It constantly checks
touch pads for inputs.
intermittent
electronically switch all keys on. This will produce an F7
error code that the display head will show as a stuck key.
Description
If its cable has a poor or
connection, the microprocessor
Additional notes
• Single oven display head # 35-00-703
Heat
• Double oven display head # 35-00-704
• Main relay board # 35-00-760
When checking sensor, also check each
lead to chassis ground and to each phase of
power line.
present, sensor
resistance as a loop, but still produce error
codes. Check lead dress very carefully.
The display head was designed for use with
either membrane switches or electronic
inputs.
will
If grounded or if voltage is
may read a correct
9 5
9 5