Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to DC Volts 
Remove connector from pressure sensor and make safe
Ensure connector X2 is correctly fitted to the PCB
Ensure connector X2 is correctly fitted to the PCB
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Measure the DC voltage between pin 13 on connector X2 and an earth (use the copper pipe to the gas valve as earth).
Expect approximately 4.9 Vdc.
Is the voltage measured as expected?
Expect approximately 4.9 Vdc.
Is the voltage measured as expected?
Isolate as per TOPs P4
and refit as necessary