Set Appliance State:
Mains Power Off
Set Multimeter to AC Voltage 
CH Demand
Use Insulation Mat as required
ON/OFF Switch in ON Position
CH Temp Selector in Maximum position
DHW Temp Selector in Minimum position
Mode Selector Switch in Heat and Hot water position
ON/OFF Switch in ON Position
CH Temp Selector in Maximum position
DHW Temp Selector in Minimum position
Mode Selector Switch in Heat and Hot water position
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
If required reset boiler, turn CH / DHW control to reset position.
Measure Voltage at Pump Connector (marked X10 green connector) on Main Switchboard.
Measure Voltage at Pump Connector (marked X10 green connector) on Main Switchboard.
Isolate as per TOPs P4
and refit as necessary