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Installation and operating instruction
Combustion manager W-FM 100 und W-FM 200
9 Troubleshooting
83054802 1/2018-07 La
200-228
9.4 Rectifying faults
Fault
codes
Diagnostic
code
Cause
Rectification
01
01
ROM error
Internal fault
(1
02
01 … 07
RAM error
Internal fault
(1
03
01 … 60
Error during internal data comparison
Internal fault
(1
04
–
Synchronisation error
Internal fault
(1
05
01 … 03
Error flame signal amplifier test
Check electrical connection
Replace flame sensor
06
01 … 04
Error internal hardware test
Internal fault
(1
10
01 … 1B
Error on input or output
The diagnostic code indicates which input or
output is affected.
01
Load controller external on / off
Check neutral conductor to W-FM.
Check electrical connection
Check if a capacitive load is connected.
A fault could be triggered if the internal re-
lay switches off and the capacitive load
delays the voltage drop by 10 ms.
Internal fault
(1
* Depending on the operating phase an im-
permissible voltage signal is present at the
corresponding output. This could be triggered
by reverse voltage caused by an operating
signal (e. g. during a lamp test).
02
Fan contactor contact
03
Fuel selection Oil
04
Fuel selection Gas
05
Reset
06
Max. oil pressure switch
07
Minimum oil pressure switch
08
Valve proving gas pressure switch
09
Anti syphon valve / safety valve Oil SV return
signal X6-03*
0A
Fuel valve Oil V1 return signal
X8-02 / X8-03*
0B
Fuel valve Oil V2 return signal X7-01*
0C
Fuel valve Oil V3 return signal X7-02*
0D
Safety valve Gas SV return signal X9-01:1*
0E
Fuel valve Gas V1 return signal X9-01:4*
0F
Fuel valve Gas V2 return signal X9-01:3*
10
Ignition gas valve PV return signal X9-01:2*
11
Safety circuit, burner flange limit switch
12
Internal safety relay return signal
13
Low gas pressure switch
14
High gas pressure switch
15
Ignition return signal
16
Air pressure switch
17
Start release Oil
18
Heavy oil immediate start
19
External load controller open
1A
External load controller closed
1B
Start release Gas
11
01
Contact return signal network short circuit
Internal fault
(1
(1
If occurring sporadically: Optimise EMC measures. If occurring continuously replace defective component.
Summary of Contents for W-FM 100
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