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F1 FAULT DISPLAYED
FAULT: THE BURNER DOES NOT LIGHT AT ALL, BUT THERE IS AN IGNITION SPARK.
NO
NO
YES
YES
Are the gas taps on?
Test the gas control valve.
Turn on the gas taps.
Check the wiring.
If the problem persists, change the
control board (PCB).
Is there 24Vdc at the gas control valve?
for testing see component testing data.
Check resistance of safety valve coil.
FAULT: THE ROOM TEMPERATURE IS INADEQUATE AND RADIATORS ARE LUKE-WARM.
YES
NO
Is the heating temperature on the boiler
set high enough?
Turn up settings
YES
Is the heating power adequate?
- Check set point P3. (Refer to Commissioning)
- Check dip switch setting. (Refer to Commissioning)
- Check the adjustment of the by-pass internal and
external (If fitted). - 30ci Only Check the 3-way valve
is not passing into the domestic hot water heat exchanger.
Is the room thermostat and or radiator
set high enough and calling for duty?
18 Fault Finding
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