Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to DC Volts 
Remove 1 connector from overheat stat and make safe
Remove fan control connector from fan assembly and make safe
Remove fan control connector from fan assembly and make safe
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Measure for DC voltage across pin 13 connector X20 and a suitable earth connection.
Expected voltage approximately 8.0 Vdc or greater.
Note.
Voltage will be present for approximately 20 seconds after power is reinstated, lockout will then occur, reset appliance as required until test complete.
Expected voltage approximately 8.0 Vdc or greater.
Note.
Voltage will be present for approximately 20 seconds after power is reinstated, lockout will then occur, reset appliance as required until test complete.
Isolate as per TOPs P4
and refit as necessary