COMBITHERM® SERVICE and TROUBLE SHOOTING
COMBITHERM INSTALLATION AND MAINTENANCE MANUAL #6004/18
PG. 21
STEAM GENERATOR TROUBLE
5. Steam LED light does not
illuminate and flash after
initial oven start-up or
illuminates and keeps flashing
after 5 minutes (CONTINUED).
6. Immersion heating elements in
steam generator produce steam
continuously in steam and
superheated steam programs.
7. Water continuously runs into
steam generator.
8. Steam generator does not
produce steam in the steam or
superheated steam program.
f) Calcium build-up on immersion
heating elements.
g) Immersion heating elements
defective.
h) Solenoid coil Y1 is defective.
i) Solenoid valve Y1 does not
close.
j) Water level probe is dirty.
k) Water level probe is defective.
l) Bad wire connection to water
level probe.
m) Bad wire connection between
B4 and multi-pin plug X8/7
and X8/8 on PC board.
a) Sensor B5 is defective.
b) Bad wire connection on multi-
pin plug X8/9 or X8/10 on PC
board.
c) Loose by-pass steam hose.
a) Coil Y1 is defective.
b) Solenoid valve is defective.
c) Solenoid valve Y1 does not
close.
d) Water level probe is dirty.
e) Water level probe is defective.
f) Bad wire connection to water
level probe.
g) Bad wire connection between
B1/B2 and multi-pin plug X8/3
and X8/4 on PC board.
a) Sensor B5 is defective.
b) Loose connection on multi-pin
plug X8/9 or X8/10 on PC
board.
c) Door is not closed.
d) Magnet on door is defective.
Decalcify steam generator. See
Cleaning & Maintenance section
under
DECALCIFICATION.
Replace immersion heating
elements.
Replace coil Y1.
Check continuity between Y1 and
multi-pin plug X5/1 and X5/10 on
PC board.
Clean water level probe.
Replace water level probe.
Check wire connection:
Black Wire = Low Water Level
White Wire = Normal Water Level
Check wire connection.
Replace sensor B5.
Check wire connection.
Reconnect by-pass steam hose.
Replace coil Y1.
Replace solenoid valve.
Check solenoid valve.
Check continuity between Y1
multi-pin plug, X5/1 and X5/10 on
PC board.
Clean water level probe.
Replace water level probe.
Check wire connection:
Black Wire = Low Water Level
White Wire = Normal Water Level
Check wire connection.
Replace sensor B5.
Check wire connection.
Close the door.
Replace magnet.
PROBLEM POSSIBLE CAUSE REMEDY
PRIOR TO STARTING SERVICE WORK, THE OVEN MUST BE DISCONNECTED FROM THE POWER SOURCE.
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