Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to AC Volts 
Turn Hot Water Tap On
Set selector switch to ch/dhw
Dhw temperature control to max
Dhw temperature control to max
Gas On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Allow ignition to commence.
As burner ignites, measure for AC voltage across white (rectification voltage) connector CN6 and blue (neutral) connector CN1.
Expected voltage between 88 - 92 VAC.
Note.
This voltage will be present for approx 5 seconds whilst burner is alight, reset boiler as required till test complete.
As burner ignites, measure for AC voltage across white (rectification voltage) connector CN6 and blue (neutral) connector CN1.
Expected voltage between 88 - 92 VAC.
Note.
This voltage will be present for approx 5 seconds whilst burner is alight, reset boiler as required till test complete.
Isolate as per TOPs P4
and refit as necessary