Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Gain access to incoming mains terminal strip as necessary
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Measure the voltage between the Brown wire at the connector on the PCB and the neutral at the incoming mains terminal strip.
Expect approximately 240 VAC
Expect approximately 240 VAC

Isolate as per TOPs P4
and refit as necessary