Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to AC Volts 
Turn Hot Water Tap On
Gain access to PCB (use Insulation Mat as required)
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Cancel purge cycle & If required, reset boiler.
Allow ignition sequence to commence.
Measure for mains voltage across pins 5 & 6 of PCB connector CN2.
Approximately 4 seconds after the fan has started mains voltage should be measured (see note).
Note.
Voltage duration is approximately 10 seconds with a 3 second interval, The boiler will enter lockout after 5 attempts of ignition, reset boiler as required until test is complete.
Allow ignition sequence to commence.
Measure for mains voltage across pins 5 & 6 of PCB connector CN2.
Approximately 4 seconds after the fan has started mains voltage should be measured (see note).
Note.
Voltage duration is approximately 10 seconds with a 3 second interval, The boiler will enter lockout after 5 attempts of ignition, reset boiler as required until test is complete.
Isolate as per TOPs P4
and refit as necessary