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Convotherm OEB Series - Page 244

Convotherm OEB Series
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Mini-world service manual
KD / 31.03.2009 5_00d_Fehlersuchliste_Mini_f_EN.doc
Page 7 / 9
5.4 Condenser
5.4.1 Constant water supply in the
condenser
Solenoid valve Y1 is not closing
a) Solenoid valve contaminated
b) Solenoid valve defective
c) Water pressure too low
Short circuit of the B3 sensor wiring
Appliance connected to hot water Cold water
Solenoid valve Y1 reversed with Y4
5.4.2 No supply of cooling water in the
condenser or supply too low
Check polarity of the B3 sensor connection (green/white)
Water supply pipe closed
Condenser quenching nozzle contaminated
Dirt filter in hose fitting contaminated
Inlet filter in the solenoid valve contaminated Clean
Solenoid valve Y1 is not opening
a) Solenoid coil defective
b) Solenoid valve defective
Short circuit of the B3 - sensor wiring or cooling sensor
B3 defective
5.5 Motor
5.5.1 Motor does not run after start of
programme
Appliance is set to dummy version
Door contact switch defective
Test door contact switch in service programme r23;
5.6 Electronics (see also General)
5.6.1 Displayed oven temperature does
not agree with the actual oven
temperature
Short circuit of the B6 sensor wiring
Check polarity of the B6 sensor (green/white)
5.6.2 Time or temperature value set
changes up or down all by itself after
being set
Movement of the selector dial was not correctly
recognised by the electronics Move selector dial
briefly in same direction
Photosensor and receiver have no contact with one
another Align position
5.6.3 Temperature displays are not
correct: The higher the temperature on
the sensor, the lower the temperature
value displayed
Polarity incorrect Check the connection leads of the
sensor in question (green and white wires must not be
reversed)
5.6.4 Electronics can be operated
normally, but appliance is not working
Appliance is set to dummy version
see also point 5.5
5.6.5 Software hangs due to buttons
having been pressed quickly several
times
Re-install software by pressing the On / Off button for 5
secs. or by disconnecting from the power supply for 10
secs.

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