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nebulous / infinitude

Open control of Carrier/Bryant thermostats
MIT License
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Fix stage indication for 25VNA8/24VNA9 equipment #145

Closed mamarley closed 2 years ago

mamarley commented 2 years ago

When dehumidifying, the opstat is "dehumidify", not the actual stage of the equipment. However, it can be confirmed by checking the service interface on the thermostat that dehumidification takes place in stage 1, so indicate it as such on the dial.

nebulous commented 2 years ago

This looks fairly straightforward. Did you mean for it to still be a Draft PR?

mamarley commented 2 years ago

Yes, I just need to confirm that the compressor is actually in the second stage. I didn't have physical access to the thermostat when I made the PR and it hasn't been warm enough for dehumidification since. I should be able to get the data I need within the next couple of days though.

mamarley commented 2 years ago

I thought for sure that with a 4-ton condensing unit and a 5-ton coil running at ~500CFM on a system that is nominally 350CFM/ton that it must have been in stage 2, but comparing the compressor RPM when dehumidifying to the compressor RPM when running in stage 1 and 2 in the "check out" installer menu, it is definitely in stage 1.