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CL
is flashing.
DHW (Domestic Hot Water) NTC not installed correctly or defect.
The appliance doesn' t run in summer mode. It works in winter mode and shows the failure code with
alternately.
Control Step
1.
Check the DHW NTC whether it is cor-
rect installed or not.
2.
Check if water NTC damaged or not ?.
B Switch off the appliance.
B Pull out NTC cables.
B Measure resistance of NTC (Ohm).
Is the NTC resistance value OK ?
3.
Check if cable damaged or not.
B In case of NTC is cahnged :
- Pull the NTC cables out.
- Measure NTC resistance.
- Reconnect the NTC cable.
B Switch off the appliance.
B Pull out the 20 poled connector on
control unit.
B Measure the NTC resistance
directly on 20 poled connector. Are
the measured values on NTC and
cocnector different ?
4.
Check the DHW circuit in main heat
exchanger whether it is calcified or
not.
5.
Electronic card is defect.
GB012 - 25K
Action
CL failure still exist ? -->2.
yes:
B Change the cable harnness.
B Switch on the appliance.
CL failure still exist ? -->3.
no:
-->4.
yes:
B Change the cable harnness.
B Switch on the appliance.
CL failure still exist ? -->4.
no:
-->4.
B In case of calcification, clean it with special pump.
If necessary change the heat exchanger.
CL failure still exist ? -->5.
B Switch off the appliance.
B Cut mains supply.
B Change the electronic card.
B Connect to main supply.
B Switch on the appliance.
Failures / Errors
3
17
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