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In general, the way to check the relay is to check the coil voltage of the LY2. If there is 24VAC between terminals 7 and 8, then you know that the circuit is energized. When the circuit is energized, there should be continuity from pin 5 to 3, and from 6 to 4. In addition, there should be no continuity (an open circuit) between pins 5 and 1, and between pins 6 and 2.
If the controller is de-energizing the circuit because you have aenough heat, then the electrical opposite would be true...assuming there is 0VAC between terminals 7 and 8, then you know that the circuit is de-energized.
When the circuit is de-energized, there should be no continuity from pin 5 to 3, and from 6 to 4. In addition, there should be continuity between pins 5 and 1, and between pins 6 and 2.
Again. without a wiring diagram, your best bet is to get an electrician to help trouble shoot the circuit with a voltmeter.
part # ly2-ua-006223
it's a 6 pin relay
contact = 1/3 hp @ 120 vac
12 a @ 240 vac
coil = 24 v ac
will your ly2n ac24 work as a replacement ? it is an 8 pin.
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