Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to DC Volts 
Turn Hot Water Tap On
Boiler ON/OFF Switch OFF
CH Temperature Selector OFF
DHW Temperature Selector to Max
Disconnect the multi-plug connector from Gas Valve
CH Temperature Selector OFF
DHW Temperature Selector to Max
Disconnect the multi-plug connector from Gas Valve
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
Boiler ON/OFF Switch ON.
Allow Fan to run and ignition sequence to commence.
Check for Voltage across the grey and violet connections on the multi-plug.
Reconnect plug after test.
Note:
Voltage will only be present during the spark period of the ignition sequence.
The Boiler will go to lock-out after approximately 10 seconds, and will have to be reset.
Allow Fan to run and ignition sequence to commence.
Check for Voltage across the grey and violet connections on the multi-plug.
Reconnect plug after test.
Note:
Voltage will only be present during the spark period of the ignition sequence.
The Boiler will go to lock-out after approximately 10 seconds, and will have to be reset.
Isolate as per TOPs P4
and refit as necessary