BCU 580 · Edition 11.15l 51
Fault signalling
9 Fault signalling
Fault message (blinking)
DISPLAY
Description
Burner 1 flame simulation
01
Flame simulation/flame signal before ignition
No flame after safety time 1
02
No flame formation to end of 1
st
safety time
Flame failure during flame proving period 1 t
FS1
03
Flame failure during burner 1 operation
04
Flame failure during operation
Burner 2 flame simulation
05
Flame simulation/flame signal before burner 2 start
Flame failure during safety time 2
06
No flame formation to end of 2
nd
safety time
Flame failure during flame proving period 2
07
Flame failure during burner 2 operation
08
Flame failure during operation
Too many remote resets
10
Remote reset activated > 5 × in 15 min.
Too many restarts
11
> 5 restarts in 15 minutes
Too many restarts for burner 2
12
> 5 restarts in 15 minutes
Controller enable output (terminal 56)
20
Controller enable output incorrectly connected/supplied with power from an external
source
Simultaneous activation (terminals 51 and 52)
21
“Maximum capacity” and “Ignition capacity” position feedback from butterfly valve
set simultaneously
Actuator wiring (terminals 52 – 55)
22
Faulty wiring of terminals 52 to 55
Actuator feedback (terminal 52)
23
Maximum or ignition capacity is not constantly signalled back to terminal 52
Simultaneous Min./Max. bus command
24
“Open actuator” and “Close actuator” bus signals set simultaneously
Non-fail-safe parameters (NFS) inconsistent
30
NFS parameter range is inconsistent
Fail-safe parameters (FS) inconsistent
31
FS parameter range is inconsistent
Mains voltage
32
Operating voltage too high/low
Faulty parameterization
33
Parameter set contains illegal settings
Incompatible bus module
35
Power module defective
36
Relay contact error
Fuse defective
39
Device fuse F1 is defective
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