Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to DC Volts 
Disconnect pump speed control and make safe
Gain access to PCB (use insulation mat as necessary)
Ensure no demands
Gain access to PCB (use insulation mat as necessary)
Ensure no demands
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Test 1:
Measure the DC voltage between pin 3 (pink)
and pin 1 (black) at X5 on the PCB.
Voltage should be approximately 4V DC.
Test 2:
Measure the DC voltage between pin 2 (yellow)
and pin 1 (black) at X5 on the PCB.
Voltage should be approximately 7.5V DC.
Measure the DC voltage between pin 3 (pink)
and pin 1 (black) at X5 on the PCB.
Voltage should be approximately 4V DC.
Test 2:
Measure the DC voltage between pin 2 (yellow)
and pin 1 (black) at X5 on the PCB.
Voltage should be approximately 7.5V DC.
Isolate as per TOPs P4
and refit as necessary