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Hooked up the wrong thermostat now no power with the right one

Asked Jan 3, 2010, 01:00 AM — 1 Answer
I hooked up a programmable thermostat that was not compatible to my unit I have a heating pump and after I realized that I unhooked it and put my old one back in and now I have no power from my unit fan nor heat my wife is upset please some one help me were cold as well..............

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hvac1000 Posts: 14,546, Reputation: 2381
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#2

Jan 3, 2010, 02:57 AM


You are in deep trouble now. You have angered SHE who must be obeyed.

It is a possibility you blew a small fuse that is usually located on the circuit board inside the furnace. This can happed especially if you failed to turn off the power while changing thermostats. If you did that replace ONLY with the same type and rate.
OR

You failed to hook up the wiring to the thermostat as it was removed originally. I hope you labeled all the wires so you know exactly which terminal they go back to.
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