Convotherm OEB Series Service Handbook page 231

Service manual OEB/OES/OGB/OGS
OEB OES OGB OGS Defect
KD / 31.03.2009
5.3.4 No water supply in the
steam generator
5.3.5 No steam supply in the
programmes with steam and hot
air
5.3.6 Water or foam sprays out
of the steam outlet aperture in
the inner chamber
5.3.7 Constant water supply in
the condenser
5.3.8 Water sprays out of air
outlet pipe (roof of appliance)
Possible cause or remedy
•
Water supply pipe closed
•
Injection part in non-return flow device
contaminated
•
Dirt filter in hose fitting contaminated
•
Inlet filter in the solenoid valve
contaminated
•
Solenoid valve Y3 is not opening
a) Solenoid valve defective
b) Contact problem on the plug
•
Contact problem on level sensor (short
circuit to earth)
•
Short circuit of the B5 sensor wiring
•
Heater contactors do not pull in
•
Immersion heaters in the SG defective
•
No water in the SG
•
Steam generator overfilled
•
Cleaning agent or decalcifier residues are in
the SG Flush out thoroughly several
times
•
Solenoid valve Y3 is not closing
a) Solenoid valve contaminated (hangs)
b) Solenoid valve defective
c) Water pressure too low (min. 2 bar)
•
Water level sensor is not switching
•
Contact problem on water level sensor or on
clamp connection
•
Electronics - fixing pin (earth connection)
loose
•
Conductance of the water too low
•
Insulating layer on water level sensor
•
Bypass pipe dirty, blocked or has a water
pocket (sags)
•
B5 sensor (steam measuring sensor)
greased up
•
Exhaust pipe blocked
•
Steam generator blocked in the area of the
water supply pipe
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