SAIL SWITCH VOLTAGE CHECK
Hoping for help on troubleshooting a Furnace Sail Switch. Furnace was intermittently failing and now progressively worse. Blower would come on and after about 30 seconds would shut off - no audible at...
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It should be zero but your meter is what we call a high impedance load (means it is a very tiny load) so if there is any leakage due to moisture on the wires, or perhaps a leaky transistor on the control board it will detect SOME voltage.. I doubt 2 volts is a problem (but may be wrong)
It is possible you have a control board problem... But you are not yet at diagnostic level IF, and I stress IF, you have a control board problem may I recommend Dinosaur boards.. Very well built.
It is possible you have a control board problem... But you are not yet at diagnostic level IF, and I stress IF, you have a control board problem may I recommend Dinosaur boards.. Very well built.
