Set Appliance State:
Mains Power Off
Set Multimeter to DC Volts 
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Test 1.
Measure the DC voltage between pin 3 (brown) and pin 4 (blue) on
connector CN4 - make a note of the voltage measured.
Test 2:
Slightly Increase the system pressure and repeat Test 1.
Has the voltage increased after the increase in system pressure ?
Measure the DC voltage between pin 3 (brown) and pin 4 (blue) on
connector CN4 - make a note of the voltage measured.
Test 2:
Slightly Increase the system pressure and repeat Test 1.
Has the voltage increased after the increase in system pressure ?
