RESISTANCE FLUE LIMIT STAT

Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4

Set Multimeter to Resistance

For access to flue limit stat, remove fan assembly
Remove both wires from the thermostat

Measurement:

1. Inspect flue limit stat for signs of water corrosion.
2. Measure the resistance between the terminals of the flue limit thermostat.
Expect continuity / zero resistance.
Is the resistance measured as expected?

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Note:
Image shows the flue limit stat removed for clarity but test can be carried out with the thermostat in situ, attached to the recuperator.