RESISTANCE SENSOR TEMP DHW AND HARNESS

Isolate Mains Power to appliance as per TOPs P4

Set Multimeter to Resistance

Disconnect connector CN9 from the PCB

Measure the resistance across connections 5 (red) and 6 (black) at the disconnected connector CN9.

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.