3
Failures / Errors
GB012 - 25K
18
2P
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.
2P failure still exist ? -->2.
2.
B
Is there air in the system ?.
yes:
-->3.
no:
B
Remove the air in system.
2P 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.
2P 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.
