Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to DC Volts Set meter to measure DC Volts
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Measurement:

Measure voltage across the black and grey contacts of the
flow turbine at the inline connector.
Voltages should be measured as in the range below.
Connections
Volts DC
Black & grey
4.5 to 5.5

Note:
Ensure good connections are made whilst carrying out this test.