Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to AC Volts 
NO demand
Remove connector ST17 from PCB
Remove connector ST17 from PCB
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Preheat switched OFF (ECO button illuminated)
A.S.A.P after power reinstated.
Measure the voltage across pin 1 at location
ST17 on the PCB and mains neutral.
Press and hold the reset button on the control panel for 2 seconds and then release.
The voltage should fluctuate up and down between 0V and 1.5V AC for 4 seconds
before settling back to its original voltage.
Reset the appliance again and repeat the test on pins 3, 4 and 6, the
voltage should behave as above on all tests.
A.S.A.P after power reinstated.
Measure the voltage across pin 1 at location
ST17 on the PCB and mains neutral.
Press and hold the reset button on the control panel for 2 seconds and then release.
The voltage should fluctuate up and down between 0V and 1.5V AC for 4 seconds
before settling back to its original voltage.
Reset the appliance again and repeat the test on pins 3, 4 and 6, the
voltage should behave as above on all tests.
Isolate as per TOPs P4
and refit as necessary