Failures / Errors | 15
C8 and operating LED is flashing.
Target fan speed can not reached or blockage problem.
Control Step Action
1. Is the flue gas pipe blocked ? no: -->2.
yes: B Switch off the appliance.
B Clean the flue gas pipe.
B Switch on the appliance.
C8 failure still exist? -->2.
2. Check the power voltage supply.
Is voltage below 160 V AC ?
yes: B Switch off the appliance.
B Inform related persons/company.
B Switch on the appliance.
C8 failure still exist? -->3.
no: -->3.
3. Check the fan it self. Is there any block-
age or others problems?
no: -->4.
yes : B Switch off the appliance.
B Change the fan.
B Switch on the appliance.
C8 failure still exist? -->4.
4. Electronic card is defect. B Switch off the appliance.
B Cut mains supply.
B Change the electronic card.
B Connect to main supply.
B Switch on the appliance.
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