Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to AC Volts 
CH Demand
Gain access to PCB (use Insulation Mat as required)
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Measure the voltage between the brown wire at the bottom right
of the PCB to the LEFT grey wire at the plug marked FAN.
Mains voltage should be present.
Information:
Older PCBs have neutral directly wired in, as shown in the picture. Newer PCB's have a separate plug for the neutral connection. This test uses the fan neutral as it is easy to access and the same on both versions.
of the PCB to the LEFT grey wire at the plug marked FAN.
Mains voltage should be present.
Information:
Older PCBs have neutral directly wired in, as shown in the picture. Newer PCB's have a separate plug for the neutral connection. This test uses the fan neutral as it is easy to access and the same on both versions.
