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3.3
Failure codes and corrections steps
4C
is flashing.
Overheat lock-out by temperatur limiters (2 x STB : Flue gas + prim. Heatexchanger). In this case ; Heat
demands is blocked and pump stops 3 minutes later.
Control Step
1.
Is the system pressure between 1 - 2
bar?
2.
Is the circulation pump blocked ?
3.
Check the flue gas pipe line.
Is there any blockage ?
4.
Check the recuperator.
Is there any blockage?
5.
B Switch off the appliance.
B Check the temperature limiter
(STB) on recuperator.
Ist the circuit open or wrong
installed ?
GB012 - 25K
Action
yes:
-->2.
no:
B Fill water in sysytem.
B Bleed the system
B Press RESET button and restart again.
4C failure still exist? -->2.
yes:
B Eliminate the blockage (turn the shaft).
If not succesful :
B Switch off the appliance.
B Cut mains supply.
B Drain the water from appliance.
B Change the pump.
B Fill with water and bleed the system again.
B Connect to main supply.
B Switch on the appliance.
B Press RESET button and restart again.
4C failure still exist? -->3.
no:
-->3.
yes:
B Check the flue gas pipe and remove the block-
age.
B Switch on the appliance.
B Cihazý resetleyip yeniden çalýþtýrýn.
4C failure still exist? -->4.
no:
-->4.
yes:
B Clean the recuperator. Replace if necessary.
B Switch on the appliance.
B Press RESET button and restart again.
4C failure still exist? -->5.
no:
-->5.
no:
-->6.
yes:
B Change the temperature limiter (STB) or correct
the installation.
B Switch on the appliance.
-->6.
Failures / Errors
1)
.
3
9
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