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3
Failures / Errors
1H
is flashing.
Cumbustion chamber temperature sensor
ber (pump runs continuously)
Control Step
6.
Check the burner gas pressure. Are
the values OK ?
7.
Is the heat exchanger and recupera-
tor surface dirty or damaged (block-
age) ?
8.
Electronic card is defect.
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.
16
1)
is defect, not detected or overheating in cumbustion cham-
Action
yes:
B Correct the gas pressure values. If not possible,
change the gas valve.
1H failure still exist ? -->7.
no:
-->7.
yes:
B Remove the blockage.
1H failure still exist ? -->8.
no:
-->8.
B Switch off the appliance.
B Cut mains supply.
B Change the electronic card.
B Connect to main supply.
B Switch on the appliance.
GB012 - 25K
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