Set Appliance State:

Mains Power Off
Set Multimeter to AC Volts Set meter to measure AC Volts
Ensure Thermal Store is not up to temperature.
Models with Programmer: Rocker Switch to Continuous.
Models without Programmer: Rocker Switch to ON.
WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure
Mains Power On

Measurement:

Check for the presence of Mains Voltage across terminal 5 and terminal 1 on the 5 way terminal strip.