Küppersbusch EDG 6600.0, Service Manual

Page: 75 / 97

H3-72-01 75
For internal use only
9.5 Fault schedule EKDG 6800.0
F9 Rise in air temperature faulty (when the
evaporator heater is activated the air tem-
perature rises too slowly)
1. Oven leaks (loss of steam, doors not properly closed?)
2. Air temperature sensor does not react. Probe dirty/wet
3. Too much cold food has been put into the oven (for steaming a
max. 2 kg of food is permissible)
4. Calculator defect, possibly as a result of moisture
F 10 B utton contact faulty closed for more
than a minute
1. Button that has got caught on the control panel
2. The computer will get damp in the area of the flat cable as a
result of a lead in the red silicon bead
3. The operating element will become damp as a result of steam
getting into the space behind the panel
dEno Demonstration mode is activated
(message only appears after a power cut)
The mode intended for exhibition purposes. No heaters are
switched on and no error messages are given.
Signal Faulty diagnosis of the micro-
controller Possible causes of the fault
Add water Water resistance remains high
although the pump is switched on
(level pin does not conduct).
Besides a lack of water in the tank, the following may also be the
cause:
1.
The supply pump does not transport sufficiently (swivel arm/
hose blocked or crushed).
2. Wiring to the level pin faulty (interruption, loose contact, etc.).
3. Earth circuit on the evaporation heater or on the calculator inter-
rupted.
Boiler
calcified Water resistance only becomes low
on additional pumping (level pin con-
duction delayed) or the maximum
number of heating hours has been
reached;or if the difference between
the heating spiral and the maximum
water temperature is too high.
Besides calcification the following may also be the cause:
1.
The supply pump does not transport sufficiently (swivel arm/
hose blocked or crushed). Note: signal only after 5 occurrences.
2. Water insufficiently conductive (demineralised water used?).
3. Insulation layer on the pin (unsuitable descaler used or resi-
dues?).
4. Insulation layer on the spiral (unsuitable descaling agent used
or deposits?)
F0 Resistance of the oven temperature
gauge (Pt500) beyond the permissible
range
1. Short in the oven temperature gauge, interruption.
2. Faulty wiring (interruption, short-circuit, loose contact, etc.).
3. Calculator defect, possibly as a result of moisture.
F1 Resistance of the food temperature
gauge (NTC) beyond the permissible
range.
1. Food temperature gauge short-circuit, interruption, seeping in of
moisture, etc., or the socket defect.
2. Socket faulty (moisture, warped contacts, loose contact, etc.)
3. Faulty wiring (interruption, short-circuit, loose contact, etc.).
4. Food sensor not set (sensor tip gets too hot)
5. Calculator defect, possibly as a result of moisture.
F2 Resistance of the water temperature
gauge (NTC) beyond the permissible
range.
1. Water temperature gauge short circuit, interruption, seeping in
of moisture, etc.
2. Faulty wiring (interruption, short-circuit, loose contact, etc.).
3. Calculator defect, possibly as a result of moisture.
F3 Resistance of the air temperature
gauge (NTC) beyond the permissible
range. 1. Water temperature gauge short circuit, interruption.
2. Faulty wiring (interruption, short-circuit, loose contact, etc.).
3. Calculator defect, possibly as a result of moisture.
F4 Motor current of the exhaust air slider
does not rise sufficiently in the final
position. 1. Short circuit in the heating spiral temperature sensor, interrup-
tion
2. Faulty wiring (interruption, short-circuit, loose contact, etc..)
3. Calculator defect, possibly as a result of moisture.