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).
Notes:
1. 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.
2. Connector CN2 may differ in appearance but test points remain the same.
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).
Notes:
1. 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.
2. Connector CN2 may differ in appearance but test points remain the same.
Isolate as per TOPs P4
and refit as necessary