COMBITHERM® SERVICE and TROUBLE SHOOTING
COMBITHERM INSTALLATION AND MAINTENANCE MANUAL #6004/18
PG. 22
STEAM GENERATOR TROUBLE
8. Steam generator does not
produce steam in the steam or
superheated steam program.
(
CONTINUED)
MOTOR TROUBLE
9. Motor does not start in any
program and/or stops
unexpectedly.
10. Motor does not run in any
program, but steam generator
operates in both steam and in
superheated steam programs.
CONDENSER TROUBLE
11. Water continuously flows
through solenoid valve into
condenser.
e) Magnet on door is in the wrong
position.
f) Bad wire connection between
door magnet and multi-pin
plug X8/1 or X8/2 on PC board.
g) Door latch interlock switch is
defective.
a) Thermoelement of motor shut
off.
b) Wrong motor rotation direction
on three-phase ovens.
c) Motor is defective.
d) Door is not closed.
e) Magnet on door is in the wrong
position.
f) Magnet on door is defective.
g) Door latch interlock switch is
defective.
h) Bad wire connection on multi-
pin plug X8/1 and X8/2 on
PC board.
a) Sensor B4 is defective.
b) Bad wire connection between
multi-pin plug X5/5, X5/9 and
K5/A1.
a) Sensor B3 defective.
b) Bad wire connection between
sensor B3 and multi-pin plug
X8/5 or X8/6 on PC board.
c) Bad wire connection between
sensor B5 and multi-pin plug
X8/9 and X8/10.
d) Solenoid valve is defective.
e) Solenoid valve Y2 remains
open.
f) Coil Y2 is defective.
Position magnet correctly.
Check wire connection.
Replace the door latch interlock.
Check green LED on PC board.
Change two of the incoming
phases to the unit.
Replace motor.
Close the door.
Position magnet correctly.
Replace magnet.
Replace the door latch interlock.
Check wire connection.
Replace sensor.
Check wire connection.
Replace sensor B3.
Check wire connection.
Check wire connection.
Replace solenoid valve.
Check solenoid valve.
Check continuity between coil Y2
and multi-pin plug X5/1 and
X5/11 on PC board.
Replace coil Y2.
PROBLEM POSSIBLE CAUSE REMEDY
PRIOR TO STARTING SERVICE WORK, THE OVEN MUST BE DISCONNECTED FROM THE POWER SOURCE.
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