Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
If installed disconnect outdoor temperature sensor
from terminal block pins 3 & 4
from terminal block pins 3 & 4
Measurement:
If no outdoor sensor is installed, choose that option from below.
Measure for resistance across leads of disconnected outdoor sensor harness.
Resistances vary with temperature and should
conform approximately to the graph below:
Measure for resistance across leads of disconnected outdoor sensor harness.
Resistances vary with temperature and should
conform approximately to the graph below:
