Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to DC Volts 
DHW Demand
Gas On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Allow fan to start.
Measure between the green connection on the gas valve solenoid and the neutral at the incoming mains terminal strip.
Expect approximately 24vdc.
Note:
Voltage will only be present for approximately 1-3 seconds during the sparking stage of ignition phase the appliance will try to ignite several times before going to lockout.
Click Here for Guidance on Resetting the Appliance
Measure between the green connection on the gas valve solenoid and the neutral at the incoming mains terminal strip.
Expect approximately 24vdc.
Note:
Voltage will only be present for approximately 1-3 seconds during the sparking stage of ignition phase the appliance will try to ignite several times before going to lockout.
Click Here for Guidance on Resetting the Appliance
Isolate as per TOPs P4
and refit as necessary