Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to AC Volts 
Disconnect electrical connector from the fan
assembly, position in a safe place
Ensure NO demand
assembly, position in a safe place
Ensure NO demand
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Click here for more information before carrying out this test.
Reset appliance press and hold reset button for 5 seconds, then release.
Test 1:
Measure for AC Voltage across terminals 2 (Brown) and 4 (Yellow) of connector ST5 and
note the reading.
Test 2:
Apply a CH demand.
Measure for AC Voltage across terminals 2 (Brown) and 4 (Yellow) of connector ST5 again.
Expect an increase in voltage of approximately 1.3 VAC or greater from the original voltage
measured on the first test.
NOTE: If appliance lockout occurs (approx. after 30 seconds) during test,
reset appliance as required until test complete.
Reset appliance press and hold reset button for 5 seconds, then release.
Test 1:
Measure for AC Voltage across terminals 2 (Brown) and 4 (Yellow) of connector ST5 and
note the reading.
Test 2:
Apply a CH demand.
Measure for AC Voltage across terminals 2 (Brown) and 4 (Yellow) of connector ST5 again.
Expect an increase in voltage of approximately 1.3 VAC or greater from the original voltage
measured on the first test.
NOTE: If appliance lockout occurs (approx. after 30 seconds) during test,
reset appliance as required until test complete.
Isolate as per TOPs P4
and refit as necessary