Convotherm OEB Series User Manual

Service manual OEB/OES/OGB/OGS
5_00e Troubleshooting list_L 18/27 2013-01-30
OEB OES OGB OGS
Defect Possible cause or remedy

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
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5.5.1 Motor does not run after
start of programme
 Appliance is set to dummy version
 Door contact switch defective Twist lever
catch (catch screw) too far from the Reed
contact
 Test door contact switch in service programme
r23; if necessary, make appliance level (above
all with floor models)
 Motor contactor K5/K50/K55/K56/K57 does
not pull in
a) Contact problem on the terminals
b) Motor contactor defective
 Fan malfunction (excessive temperature) E 03
 Test motor contactors (K5, K50, K55, K56,
K57) for sticking contacts
5.6 Electronics (see also General)
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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)
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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
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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)
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5.6.4 Electronics can be
operated normally, but
appliance is not working
 Appliance is set to dummy version
 Main contactor defective
 see also point 5.5
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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.

Convotherm OEB Series Specifications

General

Brand	Convotherm
Model	OEB Series
Category	Commercial Food Equipment
Language	English