My downstairs thermostat is dead(does not require batteries)and the heat pump is not coming on. The upstairs is working fine in both heat and AC mode. I switched the two thermostats and both work fine with the upstairs, so it is not the thermpostat.
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My downstairs thermostat is dead(does not require batteries)and the heat pump is not coming on. The upstairs is working fine in both heat and AC mode. I switched the two thermostats and both work fine with the upstairs, so it is not the thermpostat.
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