Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to DC Volts 
Gain access to PCB (use Insulation Mat as required)
Run hot water tap at 3 litres per minute
Run hot water tap at 3 litres per minute
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Measure for DC voltage across pin 6 on connector X2 and
a suitable earth connection.
Expected voltage approximately 2.5 Vdc (voltage may fluctuate).
Note.
1. Pins are numbered on the connectors.
2.The colours of the wires may vary but the test points remain the same.
a suitable earth connection.
Expected voltage approximately 2.5 Vdc (voltage may fluctuate).
Note.
1. Pins are numbered on the connectors.
2.The colours of the wires may vary but the test points remain the same.
Isolate as per TOPs P4
and refit as necessary