RESISTANCE OUTDOOR SENSOR

Isolate Mains Power to appliance as per TOPs P4

Set Multimeter to Resistance

Gain access to PCB (use insulation mat as required)
Disconnect plug X7B from PCB

Measure resistance across the grey wires on X7B connector.

Resistances vary with temperature and should conform approximately to the table below:

Note: Clicking on the resistance table will switch between table and graph view.