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E
G
Check and correct if necessary
1. Electrical and pressure tube connections
2. Blockage of pressure tubes
3. Restriction in flue
4. Venturi
Replace air
pressure switch
PCB
-
M4 connector is approx 230V AC,
terminals 36 & 38
15.0
FAULT FINDING
F
NO
Gas at burner
Ensure gas is on and purged
YES
Replace gas valve
Turn selector
switch
to 'Reset'
position
Replace gas valve
Replace PCB
Check and correct if necessary
1. Ignition electrode and lead
2. Electrode connection
3. Spark gap and position
230V at Main PCB
-
M4
~
NO
I
ReplacePCB
I
connector across terminals
37 & 38. Check wiring
YES
I
Replace gas
valve electrical
plug/igniter assy
44
1.
Check the burner setting pressure of
the gas valve
(see Section 9.2 of Commissioning)
2.
Voltage at modulating coil of gas valve is:
Max. burner press.approx 9V DC (13V DC LPG)
Min. burner press.approx 1V DC
Current atmodulating coil of gas valve is:
(Use an instrument with average function for this
measure)
30 + 230 mA DC (45 + 310 mA DC LPG)
H
YES
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