Wascomat Clarus Control SU620 - Page 44

44
Troubleshooting
NO HEATING
The temperature has not increased the number
of degrees specified in the function MIN ALLO-
WABLE TEMPERATURE INCREASE (see set-
tings 2) during the time that is programmed in
the function MAXIMUM HEATING TIME (Confi-
guration 1).
If the power is on, be very careful when
working on the the machine.
Try to restart the machine (i.e. reset the error
code) by pressing START.
If the error returns, first make sure that:
• theprogrammemoduleisnotincorrectlypro-
grammed
• theheatsupplyisintact(allphasesOKand
the steam or gas boiler is operating)
• thedraindoesnotleak.
1. Exit the programme using a. Enter the service
programme and fill up water to above the safety le-
vel (5-10 cm above the lower edge of the inner drum).
Switch on the heating. Does the heat contactor go
high?
Yes No
Troubleshoot the operating circuits
of the contactor
2. Measure the operating voltage across each element.
No voltage Voltage present
3. Use a clip-on ammeter and verify that all
phases draw current (6 - 25 A depending on the
element rating) or, alternatively, switch off the
voltage with the wall-mounted power switch
and measure the resistance of the elements,
which should be 20 - 25 ohms (2.5 kW) or 40 - 50
ohms (1 kW).
Resistance OK Incorrect resistance
Inspect the elements Replace the defective
for lime deposits. element
Decalcify if necessary
4. Troubleshoot the voltage supply circuit for the
elements.
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Element connectors