Have HVAC Questions? Ask an HVAC Expert for Answers
Hello, one minute while I get some information together.
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Did you go into the installer menu on the thermostat and set it up for a heat pump with the correct setting for the crossover valve?
Then something would be wrong with the changeover valve have you tried switch the wires on the valve or at the thermostat?
Do you have a separate O and B wire?
Do you have a two wires O and B or just one?
Yes but on the thermostat do you just have an o/B terminal with one wire or two separate wires?
OK in the thermostat setting change the crossover valve to the other setting and try it.
Also do you have an O and B terminal on the thermostat or just an O/B terminal?
Can you reverse the wires to the valve?
Yes I would say reverse polarity is all you have left at this point, worth trying and it can correct that.
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Yes very possible!
Try it and see what happens