Service manual

Notice
Date Page
01201090
INSTRUCTION
HANDBOOK
WATER IN DRUM
- Waste water collector might be blocked.
- Drain valve, wiring faulty or compressed air inlet.
- Level tube probably blocked.
- Level detection function on CPU PCB faulty.
- Air vent blocked.
Error/Function Cause Action
Clean waste water collector.
- Check drain valve functioning.
- Clean or replace level tube.
Clean connection of the water
level control device.
- Replace PCB.
- Clean air vent.
The water level is higher than
the EMPTY level at start of
program.
MACHINE OVER-FILLED
- Transient fault or water has been added manually.
- Electrovalves are faulty.
- Level detection function on CPU PCB faulty.
- Drain machine then restart a
program or change the level in
the manual program.
- Check function of
electrovalves.
- Replace PCB.
The water level is above the set
safety level during program
operation or manual operation.
NO HEATING
- Bad water seal of the drain valve.
- Elements faulty.
- Leak at water supply.
- Fault in wiring between contactor and element(s)
or heating contactor faulty.
- Temperature detection function on CPU PCB
faulty.
- Check water seal of the drain
valve.
- Switch off power supply at wall
switch. Measure resistance of
elements to see if any element is
faulty (open circuit).
- Replace faulty element.
- Check seals of water electrov-
alves.
- Check wiring and replace the
heating contactor.
- Replace PCB.
Rate of temperature incease in
water slower than minimum
value allowed.
13. Maintenance
0199 2
13
NTC HIGH TEMP.
- This suggests short-circuit in sensor or wiring.
- Temperature sensor faulty.
- Temperature detection function on CPU PCB
faulty.
- Check the wiring temperature
sensor and replace as appropri-
ate.
- Replace temperature sensor.
- Replace PCB.
Temperature sensor indicating a
temperature above highest
allowable value.
NO MOTOR COMM.
- Transient fault. No action required.
- Frequency converter faulty.
- Turn the machine's wall switch
off and on again. Start a
program.
- Check the frequency converter.
Communication between PCU
and frequency converter inter-
rupted or disturbed.