Set Appliance State:

Set Multimeter to AC Volts Set meter to measure AC Volts
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Measurement:

There is no need to wait for the fan and pump purge to finish before commencing this test.
Measure the AC voltage between the two black wires at the 3 wire connector on the fan.
Expect mains voltage.