Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to AC Volts 
Gain access to PCB (use Insulation Mat as required)
Selector switch set to DHW
Preheat switched OFF
Ensure NO demand is present
Note.
Slightly move connectors until PCB connection strips
are exposed for voltage measurement
Selector switch set to DHW
Preheat switched OFF
Ensure NO demand is present
Note.
Slightly move connectors until PCB connection strips
are exposed for voltage measurement
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Measure for AC voltage across pin 8 (X3 connector PCB) and
main neutral (terminal block).
Expected voltage approximately 120 Vac.
main neutral (terminal block).
Expected voltage approximately 120 Vac.
Isolate as per TOPs P4
and refit as necessary