Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to AC Volts 
CH Demand
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Approximately 20 seconds after the fan starts measure the
voltage between the two red wires at CON12 on the PCB.
Voltage should stay above 160V AC but should be seen to fluctuate to approximately 230V AC as shown in the multimeter to the right.
Note:
Boiler will attempt ignition 5 times before going to lockout,
with approximately 40 seconds between attempts.
Reset as necessary until test is complete.
voltage between the two red wires at CON12 on the PCB.
Voltage should stay above 160V AC but should be seen to fluctuate to approximately 230V AC as shown in the multimeter to the right.
Note:
Boiler will attempt ignition 5 times before going to lockout,
with approximately 40 seconds between attempts.
Reset as necessary until test is complete.
Isolate as per TOPs P4
and refit as necessary