Set Appliance State:
Gas Off
Set Multimeter to AC Volts 
CH Demand
Isolate Mains Power to appliance as per TOPs P4
External controls calling for heat
CH temperature switch to maximum
DHW temperature switch to minimum
External controls calling for heat
CH temperature switch to maximum
DHW temperature switch to minimum
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Measure the voltage between pins 3 and 4 on
connector X6 (white and orange wires)
Expect approximately 95V AC during the sparking
stage of the ignition sequence.
Is the voltage measured as expected?
Note:
Reset as necessary to complete test if appliance enters lockout.
connector X6 (white and orange wires)
Expect approximately 95V AC during the sparking
stage of the ignition sequence.
Is the voltage measured as expected?
Note:
Reset as necessary to complete test if appliance enters lockout.
Isolate as per TOPs P4
and refit as necessary