Fault Code
394
Burner ON/OFF signal from the user interface turned off
unexpectedly
451
Being operating mode for ignition not all channels are in ignition
position
600
Program monitoring time (FAT) exceeded
601
Failure during leakage test: gas pressure still active
602
Failure during leakage test: no gas pressure detected
603
Manual venting of the gas line required!
607
Invalid drop of ignition position acknowledgement
608
Invalid drop of the boiler safety interlock chain
609
Invalid drop of the gas safety interlock chain
610
Invalid drop of the oil safety interlocj chain
611
Gas pressure too low
613
Air pressure signal is missing
617
Permanent pilot flame extinguishes during operation
624
Oil pressure too low
711
Invalid change of the operation mode
713
Invalid signal combination at input terminals during operating
mode "Burner OFF"
714
Invalid signal combination at input terminals during operating
mode "Burner Ready"
715
Invalid signal combination at input terminals during operating
mode "Pre-ventilation"
716
Invalid signal combination at input terminals during operating
mode "Ignition Position"
717
Invalid signal combination at input terminals during operating
mode "Ignition"
719
Fuel valves are open for too long without a flame
720
Ignition transformer activated too long
721
Ignition valve openes for too long
722
Fuel valves open in maintenance mode
723
Ignition process needs too much time
724
Oil pressure too low
725
Oil valves are open while gas is selected
727
Main gas 1 opens unexpectedly
728
All three gas valves open for too long
729
Ignition process lasts for too long (without pilot burner)
730
Maintenance mode without pilot burner
731
Ignition valve opens without pilot burner
732
Invalid signal combination at input terminals during operation
734
Pre-ventilation period falls below the minimum
739
Leakage test: Main gas valve 2 opens for too long
740
Leakage test: Main gas valve 1 leaky
741
Leakage test: Main gas valve 1 opens for too long
742
Leakage test: Main gas valve 2 leaky
743
Flame monitoring: Flame burns for too long after shutdown
745
Program monitoring time exceeded
746
Solenoid valve cannot be switched off
747
Leakage test: Venting into the burner is not allowed
751
The bus-card runs into time-out.
759
Leaving "Setting-mode" automatically after 24 hours
D1
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D2
Channel
Internal state information
Description