Failures / Errors | 13
CE / d4 and operating LED is flashing.
A fast temperature increase detected in central heating (CH) (> 2,7 K/sec).
The appliances will be resetet automaticly, if the flow temp. < 40 ºC.
Control Step Action
1. B Check system pressure on manome-
ter.
Is the system pressure > 0,5 bar ?
yes: -->2.
no: B Fill the system with water.
CE / d4 failure still exist ? -->2.
2. B Is there air in the system ?. yes: -->3.
no: B Remove the air in system.
CE / d4 failure still exist ? -->3.
3. B Check if water is circulated ? yes: -->4.
no: B Check and clean pump, filters and return and flow
valves.
CE / d4 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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