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6 Fault conditions and procedures for rectification
If the burner is found out of operation, in lockout the
display will show a fault code.
If other fault codes are shown, check first that the basic
requirements for operation are met.
❏ Is there a supply of electricity?
❏ Is the gas pressure supplied by the mains correct and
is the ball valve open?
❏ Are all controls for room and boiler, liquid level
interlocks, limit switches etc. set correctly?
If it has been established that the lockout is not due to any
of the above, all the burner functions must be checked.
To avoid damage to the plant, do not reset the
burner more than twice.
If the burner locks out for a third time call for a
service engineer.
Fault conditions should be rectified only by
qualified and experienced personnel.
Reset: with diagnostic code output (see Ch. 5.6):
From the onset of lockout wait for the error
analysis time of approx. 5 seconds, then press
reset-button until the signal lamp switches to
orange (approx. 5 secs.), determine flashing
code, then press reset-button for a further
second to reset.
without diagnostic code output:
Press reset-button until the red light goes out
(approx. 1 second).
Combustion manager W-FM10
Signal lamp codes
Red Lockout
Diagnostic codes for probable causes:
(press reset-button approx. 5 seconds)
2 x flashes no flame at end of safety time
3 x flashes air pressure switch fault
4 x flashes flame simulation
6 x flashes servomotor fault
7 x flashes flame failure during operation
(partial load)
9 x flashes flame failure during operation
(full load)
10 x flashes no specific error code
12 x flashes valve proving valve 1 leaking
13 x flashes valve proving valve 2 leaking
By pressing reset-button
(approx. 1 secs.) the flashing code list
in the internal memory is deleted
Flashing red/green Flame signal at burner start Find cause and rectify
Flashing red/orange Over-voltage Check external voltage supply
then short pause
Flashing orange/red Low voltage or internal fault Check external voltage supply
replace combustion manager
Internal fuse has blown Replace fuse (Ch. 7.13)
Flashing red Low gas pressure Check burner setting or gas supply
pressure
Orange, after 30 secs. red Air pressure switch not switching Check air supply, air pressure switch
Flashing green Flame sensor current too low Check burner setting and
sensor electrode / cable
Voltage supply
Signal lamp remains off after Supply voltage lost Check voltage supply
heat demand from boiler control
Combustion manager defective Replace combustion manager
Condition Cause Remedy
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