Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to AC Volts Set meter to measure AC Volts
CH Demand
Gain access to electrical connections at pump
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Measurement:

Measure the voltage across the live (brown)
and neutral (blue) terminal at the pump.
Expect mains voltage.
Note:
Pump electrical connection designs may vary but the voltage measurement should still be carried out at the pump.