Weishaupt W-FM 100 Installation And Operating Instruction page 205

Fault Diagnostic Cause
codes code
33 – Unexpected oil pressure, min. oil pressure
switch has triggered, contact closed
34 – Min. oil pressure switch has not reacted, con-
tact open
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
39 – Internal safety time error
3A – No burner identification is saved in the
W-FM.
3B – No HE password defined
40 – Internal safety relay fault
41 – Internal ignition contact setting fault
42 01 ... FF Internal fuel valve relay contact setting fault
01 Anti syphon valve / safety valve Oil SV
X6-03*
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
02 Fuel supply without compound curves
03 Variable "Supply" not defined
04 Variable "Fuel" not defined
05 Undefined operating mode with load control-
ler
06 Pre-purge time Gas too short
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.
83054802 1/2018-07 La
Installation and operating instruction
Combustion manager W-FM 100 und W-FM 200
205-228
Rectification
Check pump pressure.
Check oil supply
Check min. oil pressure switch.
Check gas connection pressure
Transfer data from the ABE [ch. 6.16.1].
Check electrical connection at output.
If several faults occur, the diagnosis codes
are add up.
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).
Check electrical connection [ch. 6.4.2].
Set fuel.
Transfer data from the ABE [ch. 6.16.1].
Check fuel selection [ch. 6.4.2].
Check operating mode [ch. 6.12.2].
(1
Internal fault
9 Troubleshooting