VOLTAGE GAS VALVE AT PCB

Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4

Set Multimeter to DC Volts

CH Demand

Gain access to PCB (use Insulation Mat as required)

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

Mains Power On

Measurement:

If required, reset boiler.
Allow self-check to complete and ignition sequence to commence.
Measure for DC voltage across the brown and blue wires of connector 35.
Expected voltage 216 Vdc or greater (see note 3.).

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Note.
1. PCB connector numbers can be found on the board.
2. Ensure a good connection is made or misdiagnosis will occur.
3. Voltage will only be present during the sparking phase of ignition (approximately 5 seconds), the boiler will enter lockout after 3 attempts of ignition, approximately 30 seconds between each attempt, reset as required until test is complete.