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The ALARM LED remains off, the segment display
flashes. If several signals occur, the code with the
highest priority is displayed.
'LVSOD\ 0HDQLQJ
0 Awaiting demand for heating or hot water
1 Shunt 6 not present switch open
2-3 Fan speed rise time/Preventilation
4 Pre-ignition - Ignition
5 Flame presence verification
6 Burner operating on hot water
7 Burner operating on heating
8 End of demand for heating or hot water, post-ventilation
9 Return to initial position, reinitialise gas control box parameters (fan off)
'LVSOD\ 0HDQLQJ 3ULRULW\
1 Boiler potentiometer setting absent 1
2 Hot water potentiometer setting absent 1
4TÜV function active 1
5 Sweep function active 1
7 Regulator off function active 1
8 Domestic hot water sensor 1: Circuit broken 1
0 Domestic hot water sensor 1: Short circuit 1
A Anti-legionella function active 2
C Sweep button closed after RESET/Unlock 1
dTÜV button closed after RESET/Unlock 1
E Forced intermission active 2
F Warmer/cooler correction executed 1
L Revert to standard values 1
P Q1 heating circuit pump kick active 2
U Q3 hot water pump or bypass valve kick active 2