Failures / Errors | 9
6. Check the burner gas pressure. Are the
values OK ?
yes: B Correct the gas pressure values. If not possible,
change the gas valve.
A2 failure still exist ? -->7.
no: -->7.
7. Is the heat exchanger and recuperator
surface dirty or damaged (blockage) ?
yes: B Remove the blockage.
A2 failure still exist ? -->8.
no: -->8.
8. 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.
1)
The sensor is activated after 1 minute. After 3. failure the boiler is blocked. By first 2. time it will be reseted automaticly after 15 min.
A2 and operating LED is flashing.
Combustion chamber NTC failure (behind burner) : when the temperature by CC NTC reached to limit
1)
Control Step Action
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