12. Troubleshooting
12
22
438 9152-11/03
04.03
Service
Manual
NO HEATING
The temperature has not increased the number
of degrees specified in the function MIN
ALLOWABLE TEMPERATURE INCREASE (see
settings 2) during the time that is programmed
in the function MAXIMUM HEATING TIME
(Configuration 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
programmed
• 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 level (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.
Fig.
24
24
5207
Element connectors
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