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A relay is an electrically controlled switch. Electromechanical relays use an electromagnet to activate mechanical contacts, solid-state relays use semiconductor switches.

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I have a question. I got a Panasonic CU-C24GVK (24000 BTU Air conditioner), and the A/C board relay is burnt. If I'm not explaining myself, the A/C board is the thermostat itself, the board receive … the 240V, and after some minutes it send a signal to a relay that connects those 240V to the outdoor unit's compressor, that board have the following diagram: The question is, I want to know how …
asked Aug 8 '18 by Ronald Petit