Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to DC Volts 
CH Demand
Place multimeter probes on the gas valve connections
+ve probe to grey lead -ve probe to white lead
Mains reset switch On
+ve probe to grey lead -ve probe to white lead
Mains reset switch On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
After approximately 8 seconds is voltage present across the connections of the gas valve?
Expected voltage approximately between 12 and 26 volts DC.
Note:
Voltage will only be present for 2 to 3 seconds if burner does not ignite.
Expected voltage approximately between 12 and 26 volts DC.
Note:
Voltage will only be present for 2 to 3 seconds if burner does not ignite.
Isolate as per TOPs P4
and refit as necessary