TROUBLESHOOTING ERROR CODES
SERVICE MANUAL 45
REVISION 04/19, SW: 3.51
Error Code 4
The overheating switch of the oven chamber is o because the oven chamber
temperature has risen above 350°C/662°F. Press the Q1 button at the bottom of
the oven to reset the switch. If the oven comes with two fan motors, there are 2
overheating switches.
Steps Checklist Solution
1 Go to the test menu (main alarm) to see
if the overheating thermo switch has
tripped. Reset the switch.
2 Test whether the fan is running and
whether the solid state relay is working
properly.
3 Check the cable and the cable plugs.
4 - Change the overheating
sensor.
5 - Change the I/O board.
Error Code 5
The fan motor is too hot (above 120°C/248°F). Let the motor cool o for about
20-30 minutes and then try turning it on again.
Steps Checklist Solution
1 Go to the test menu (main alarm) to see
which information is displayed.
2 Check the cable and the cable plugs.
3 Check the motor temperature sensor Change the fan motor.
4 Check the fan motor windings. Change the fan motor.
5 - Change the I/O board.
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