Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to AC Voltage 
Remove R/H cover plate
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Allow fan to run and ignition sequence to commence.
Measure voltage across the brown wire (marked GVL) and the blue wire (marked GVN) at the connector marked CON 2 on ignition control board.
Note:
Voltage will only be present for approximately 7 seconds after the fan has completed its purge period (purge period lasts about 7 seconds from when fan starts).
Measure voltage across the brown wire (marked GVL) and the blue wire (marked GVN) at the connector marked CON 2 on ignition control board.
Note:
Voltage will only be present for approximately 7 seconds after the fan has completed its purge period (purge period lasts about 7 seconds from when fan starts).
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Isolate as per TOPs P4
and refit as necessary