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Installation and operating instruction
Combustion manager W-FM 100 und W-FM 200
9 Troubleshooting
83054802 1/2018-07 La
205-228
Fault
codes
Diagnostic
code
Cause
Rectification
33
–
Unexpected oil pressure, min. oil pressure
switch has triggered, contact closed
34
–
Min. oil pressure switch has not reacted, con-
tact open
Check pump pressure.
Check oil supply
Check min. oil pressure switch.
35
–
Max. oil pressure switch has triggered, con-
tact closed
36
–
No signal at input start release Oil [ch. 3.3.9]
37
–
No signal at input heavy oil immediate start
[ch. 3.3.10]
38
–
Low gas programme activated
Check gas connection pressure
39
–
Internal safety time error
3A
–
No burner identification is saved in the
W-FM.
Transfer data from the ABE [ch. 6.16.1].
3B
–
No HE password defined
40
–
Internal safety relay fault
41
–
Internal ignition contact setting fault
Check electrical connection at output.
42
01 … FF
Internal fuel valve relay contact setting fault
If several faults occur, the diagnosis codes
are add up.
01
Anti syphon valve / safety valve Oil SV
X6-03*
Check electrical connection at output.
Depending on the operating phase an imper-
missible voltage signal is present at the cor-
responding output. This could be triggered by
reverse voltage caused by an operating signal
(e. g. during a lamp test).
02
Fuel valve Oil V1 X8-02 / X8-03
04
Fuel valve Oil V2 X7-01
08
Fuel valve Oil V3 X7-02
10
External solenoid valve Gas / safety valve Gas
SV X9-01:1
20
Fuel valve Gas V1 X9-01:4
40
Fuel valve Gas V2 X9-01:3
80
Ignition gas valve PV X9-01:2
43
01
No fuel or both selected via input X4-01
Check electrical connection [ch. 6.4.2].
02
Fuel supply without compound curves
Set fuel.
03
Variable "Supply" not defined
Transfer data from the ABE [ch. 6.16.1].
04
Variable "Fuel" not defined
Check fuel selection [ch. 6.4.2].
05
Undefined operating mode with load control-
ler
Check operating mode [ch. 6.12.2].
06
Pre-purge time Gas too short
Internal fault
(1
07
Pre-purge time Oil too short
08
Safety time 1 Gas too long
09
Safety time 1 Oil too long
0A
Time ignition Off greater than safety time 1
Gas
0B
Time ignition Off greater than safety time 1
Oil
0C
Safety time 2 Gas too long
0D
Safety time 2 Oil too long
(1
If occurring sporadically: Optimise EMC measures. If occurring continuously replace defective component.