Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to DC Volts 
CH Demand
CH temperature control to max
Disconnect the fan connector from the fan assembly
(place in a safe position)
ON/OFF switch ON
Disconnect the fan connector from the fan assembly
(place in a safe position)
ON/OFF switch ON
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Measure for dc voltage across connection 17 (red) connector X20 and connection 1(black) connector X2 on the PCB.
Expected voltage approx 22vdc.
Expected voltage approx 22vdc.
Isolate as per TOPs P4
and refit as necessary