Weishaupt W-FM 100 Installation And Operating Instruction page 215

Fault Diagnostic Cause
codes code
B5 01 O
02 At least one O
03 At least one O
04 Adaption error in the load point defined under
LowFireAdaptPtNo or in full load
05 No valid O
06 Air oxygen content not achieved in pre-purge
(20.9 % ± 2 %)
07 O
08 O
[ch. 6.10.2]
Flue gas reaction time (Tau) is missing in the
load point defined under LowFireAdapt-
PtNo or in full load [ch. 6.10.4]
09 Test time for O
0A Internal W-FM fault in conjunction with O
trim
B6 01 CO signal outside of the permissible range
[ch. 6.11]
02 Prohibited setting Time COx Alarm
03 Flue gas reaction time (Tau) is missing in the
load point defined under LowFireAdapt-
PtNo or in full load [ch. 6.10.4]
04 CO limit value in operation exceeded
05 CO limit value in pre-purge exceeded
B7 00 ... 3F Error message from O
signal
41 Connection between W-FM and O
interrupted
42 Connection error CAN Bus between W-FM
and O
BA 01 O
BB 00 Service interval for O
(1
If occurring sporadically: Optimise EMC measures. If occurring continuously replace defective component.
83054802 1/2018-07 La
Installation and operating instruction
Combustion manager W-FM 100 und W-FM 200
min. value not maintained [ch. 6.10.2]
2
min. value is missing
2
setpoint is missing
2
value for at least 3 seconds
2
max. value not maintained [ch. 6.10.2]
2
min. value or O max. value is missing
2 2
monitor missing
2
module, no valid CO
2
module
2
module has aborted test of O
2
sensor expired
2
Rectification
Check setting of compound curve
[ch. 6.10.3].
Increase O
increase distance O
point value [ch. 6.10].
Check O
Check O
Repeat standardisation in both load points
[ch. 6.10.3].
Increase LowFireAdaptPtNo, see
[ch. 6.10.4].
Check connection of O
sensor.
Fully open air influencing actuators in pre-
purge [ch. 6.9.4].
Increase pre-purge time [ch. 6.8.1].
Replace O
Check installation position and connection
of O
2
Check O
Check O
Repeat standardisation in the relevant load
point [ch. 6.10.3].
Change setting (OEM level).
Internal fault
2
Check CO resistance circuit board
connection [ch. 3.3.24].
Check setting [ch. 6.11.2].
Repeat standardisation in the relevant load
point [ch. 6.10.3].
Check combustion
Check CO limit value of measurement
transducer LT3 [ch. 7.5.1].
Increase O2ModOffset, see [ch. 6.10.4].
Increase NumberTauSuspend, see
[ch. 6.10.5].
Fully open air influencing actuators in pre-
purge [ch. 6.9.4].
Increase pre-purge time [ch. 6.8.1].
Check CO resistance circuit board
connection [ch. 3.3.24].
module Check CAN Bus connection [ch. 5.1].
2
Check CAN Bus connection [ch. 5.1].
sensor Internal fault
2
Clean or replace O
Reset service interval [ch. 6.10.8].
215-228
9 Troubleshooting
Offset [ch. 6.10.4].
2
min. value to O
2
min. values [ch. 6.10.2].
2
setpoints [ch. 6.10.3].
2
module and O
2
sensor (sensor ageing).
2
sensor [ch. 4.1].
max. value.
2
min. value at each load point
2
(1
(1
sensor.
2
set-
2
2