Set Appliance State:
Set Multimeter to AC Volts 
Isolate Mains Power to appliance as per TOPs P4
CH temperature selector to 0 position
DHW temperature selector to max position
Remove terminal cover on control panel to expose pump connections
CH temperature selector to 0 position
DHW temperature selector to max position
Remove terminal cover on control panel to expose pump connections
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
Reset lock out as necessary.
Allow appliance to self check and go to standby mode.
Turn Hot Water Tap On.
Measure voltage across the pump live (brown lead) and the pump neutral (blue lead) on the 3 connection pump connector directly below the fuse marked 2AT on the PCB.
Expected voltage between 220 and 240 volts AC.
Note: Only two of three connections of the connector are used.
Allow appliance to self check and go to standby mode.
Turn Hot Water Tap On.
Measure voltage across the pump live (brown lead) and the pump neutral (blue lead) on the 3 connection pump connector directly below the fuse marked 2AT on the PCB.
Expected voltage between 220 and 240 volts AC.
Note: Only two of three connections of the connector are used.
Isolate as per TOPs P4
and refit as necessary