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ID a varistor on a dehumidifier?

  • Thread starter bo-bo the dog faced boy
  • Start date

bo-bo the dog faced boy

Jan 1, 1970
I have what I think is a varistor. About a 5mm diameter disk, burnt
around the upper edge. It is marked with the manufacturer(?) - CVN
Mexico - on one side and the other side marked


This may not be a varistor, maybe a capacitor or ?. It is in series
with a 15 ohm resistor feeding a relay coil marked 24VAC. The relay
coil burnt out as well as the resistor and this component. Any idea
what it is? Below is a layout of the circuit.

+VAC --------varistor(?)----15 ohm res.-----humidistat
switch------24vac relay coil-------ground