12. Troubleshooting
12
14
438 9152-11/03
04.03
Service
Manual
Continued from previous page
5. Activate (close) the drain valve in the service
programme. Activate another of the water valves and
verify the drain valve function.
Drain valve OK Drain valve defective
Troubleshoot the drain valve according to the
instructions under error code WATER IN DRUM later
in this troubleshooting section.
6. Verify that the level hose is not damaged, bent,
blocked and has not come lose from the T-joint, drum,
programme unit card A1 or level guard B2.
Level hose OK Defective level hose
Fit the hose correctly or replace it.
Level detector on programme unit card A1 probably
defective.
• Enter the service programme and verify that
the level indication is stable.
• Blow into the level hose and check the level indication
increases.
• Check the level system for leakage.
6
Fig.
6
3972
Level hose
connection
Fig.
7
7
Level indication
SERVICE PROGRAM
LEVEL 2
TEMP 22°C
SPEED 0
DRAIN CLOSED YES
01 COLD WATER
02 HOT WATER
03 COLD HARD WATER
04 TANK 1 WATER
05 TANK 2 WATER
06 TANK 3 WATER
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