Set Appliance State:
Mains Power Off
Set Multimeter to AC Volts 
CH Demand
Thermostat turned to Max
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Test 1.
Measure mains voltage across the fan Live terminal (brown lead) on the fan connector block and a suitable earth.
Test 2.
Measure mains voltage across the fan Neutral (terminal (blue lead) on the fan connector block and a suitable earth.
Measure mains voltage across the fan Live terminal (brown lead) on the fan connector block and a suitable earth.
Test 2.
Measure mains voltage across the fan Neutral (terminal (blue lead) on the fan connector block and a suitable earth.
