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)
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Measure the voltage between pin 7 (yellow) and pin 6 (black) at LV2 on the PCB.
Voltage is dependent on system pressure and should conform to the table below.
Is the voltage as expected for pressure displayed on the gauge?
Voltage is dependent on system pressure and should conform to the table below.
Is the voltage as expected for pressure displayed on the gauge?
Isolate as per TOPs P4
and refit as necessary