VOLTAGE GAS VALVE AT PCB

Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4

CH Demand

Gain access to PCB (use Insulation Mat as required)
Place PCB in test position, click HERE for guidance

WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure

Mains Power On

Observation:

Reset appliance if required.
Allow the ignition sequence to commence.
Measure for mains voltage across pins 1 & 2 of PCB connector X3.
Expect mains voltage (see note).

Note.
Voltage duration is approximately 5 seconds during the sparking phase of ignition with a 15 second interval, the boiler will enter lockout after 3 attempts of ignition, reset boiler as required until test is complete.