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7.2 Rectifying faults
Fault code
Cause
Rectification
01h
…
02h
05h
…
0bh
0dh
…
10h
13h
…
15h
17h
19h
…
1Ch
1Eh
43h
45h
50h
56h
69h
…
A0h
A4h
…
A5h
ACh
b0h
…
b2h
b9h
d4h
Internal unit fault
▶
Interrupt the voltage supply temporarily
▶
Reset the burner, if fault reoccurs replace the
combustion manager
Fault code
Cause
Rectification
03h
Ambient temperature too high
▶
Interrupt the voltage supply temporarily
▶
Check ambient temperature
▶
Reset the burner, if fault reoccurs replace the
combustion manager
Excess voltage
▶
Interrupt the voltage supply temporarily
▶
Check voltage supply
▶
Reset the burner, if fault reoccurs replace the
combustion manager
04h
More than 5 resets in the last 15 minutes
▶
Wait 3 minutes
▶
Rectify cause of fault
0Ch
Burner configuration incorrect
▶
Check burner configuration
▶
Check parameter E0 … E4 (see Ch. 4.2.4)
11h
Low voltage
▶
Check voltage supply
12h
Voltage supply was temporarily interrupted
▶
Check voltage supply
16h
Communication with TWI interface (Vision Box)
incorrect
▶
Plug in and unplug participants on the TWI Bus
only when de-energised
▶
Reduce the number of participants on the TWI
Bus
▶
Reduce cable length
Installation and operating instruction
Replacing combustion manager W-FM 20 … 24 with W-FM 25
7 Troubleshooting
83294002 • 2/2014-11 • La
59-70
Summary of Contents for W-FM 25
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