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TRD
EN67
Fault code
P301=0
P301=2
P328>0
P328>0
601
0
0
602
0
0
603
0
0
606
0
0
608
1 *1)
1 *1)
609
1 *1)
1 *1)
Option-
610
al
3 *1)
*1)
Option-
611
3
al
613
0
0
617
1
1
Option-
624
3
al
711
0
0
713
0
0
714
0
0
715
0
0
716
0
0
717
0
0
719
0
0
720
0
0
721
0
0
722
0
0
723
0
0
724
0
0
725
0
0
727
0
0
728
0
0
729
0
0
730
0
0
731
0
0
732
0
0
734
0
0
739
0
0
740
0
0
741
0
0
742
0
0
743
0
0
745
0
0
746
0
0
747
0
0
759
0
0
763
0
0
764
1
1
800
0
0
801
0
0
Faults - Possible causes - Solutions
Description
Failure during leakage test: gas pressure still active
Failure during leakage test: no gas pressure detected
Manual venting of the gas line required
CPI/POC signal in unexpected state
Invalid drop of the boiler safety interlock chain
Invalid drop of the gas safety interlock chain
Invalid drop of the oil safety interlock chain
Gas pressure too low
Air pressure signal is missing
Flame signal extinguishes during operation
Oil pressure too low
Invalid change of the operation mode
Invalid signal combination in operating mode BURNER OFF
Invalid signal combination in operating mode BURNER READY
Invalid signal combination in operating mode PRE-PURGE
Invalid signal combination in operating mode IGNITION POSITION
Invalid signal combination in operating mode IGNITION
Fuel valves are open for too long without a flame
Ignition transformer activated too long
Ignition valve openes for too long
Fuel valves open in maintenance mode
Ignition process needs too much time
Gas valve open with fuel oil
Oil valves are open while gas is selected
Main gas 1 opens unexpectedly
All three gas valves open for too long
Ignition process lasts for too long (without pilot burner)
Maintenance mode without pilot burner
Ignition valve opens without pilot burner
Invalid signal combination at input terminals during operation
Pre-ventilation period not respected
Leakage test: main gas valve 2 opens for too long
Leakage test: main gas valve 1 leaky
Leakage test: main gas valve 1 opens for too long
Leakage test: main gas valve 2 leaky
Flame monitoring: flame burns for too long after shutdown
Program monitoring time exceeded
Solenoid valve cannot be switched off
Leakage test: Venting into the burner is not allowed
BT300 leaves SETTING mode automatically after 24 hours
Different curve selection on main processor and watchdog proces-
sor
CO-controller - internal curve set failure
Parameter defective
Channel control mode is inconsistent between main processor and
watchdog processor (fatal error, no automatic restart possible)
43
GB
D1
D2
Curve set
Parameter
No.
Channel
20171988
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