How a Heat Pump Reversing Valve Works
January 14, 2021
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Very interesting, very refreshing.
Very interesting, very refreshing.
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I have been browsing online more than 3 hours lately, but I by no means discovered any fascinating article like yours. It is pretty value sufficient for me. In my view, if all website owners and bloggers made just right content as you did, the internet will be much more useful than ever before.
Curious: Why does the valve have a separate B/O wire? When or why does that B or O wire send a signal that is not identical to the corresponding W or Y wire? Why can’t the valve use the W or Y wire as its signal? Are there thermostats that do interesting things with these distinct O/B wires?
Curious: Why does the valve have a separate B/O wire? When or why does that B or O wire send a signal that is not identical to the corresponding W or Y wire? Why can’t the valve use the W or Y wire as its signal? Are there thermostats that do interesting things with these distinct O/B wires?
The W and Y terminals have their own function independent of the O signal. The Y signal energizes the contactor to power the compressor and outdoor fan motor. A Y signal without an O signal runs the unit in heating mode. A Y signal with an O signal energizes the reversing valve to initiate the cooling cycle. The W signal energizes the backup heat ( often electric strip heat).Hope that helps
The W and Y terminals have their own function independent of the O signal. The Y signal energizes the contactor to power the compressor and outdoor fan motor. A Y signal without an O signal runs the unit in heating mode. A Y signal with an O signal energizes the reversing valve to initiate the cooling cycle. The W signal energizes the backup heat ( often electric strip heat).Hope that helps
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