Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to DC Volts 
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Measure voltage across the black and red contacts of the
flow turbine at the inline connector.
Voltages should be measured as in the range below.
flow turbine at the inline connector.
Voltages should be measured as in the range below.
| Connections | |
| Black & red |
Isolate as per TOPs P4
and refit as necessary