Question about Honeywell Programmable Thermostat Heater

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Wiring diagram to connect programmable Thermo to Heat Pump

I purchased a Honeywell programmable PRO TH4000 thermostate to connect to a Rheem RQNJ series heat pump with back up heat coils. Neither the Honeywell operating and installation manuel nor the heat pump spec manuel gives a very good nor specific wiring for the 7 thermostat wires. The techinician where I purchase the heat pump was not much help either. (This shouldn't be this hard) I am not sure whether the back up heat coils are working properly and I had reason to believe below certain temperatures the compressor is locked out. The compressor is working at all temperatures, even at a below 20 degrees outside.

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I don't know if this will be helpful or not, but I just installed a new Honeywell and the Honeywell customer service guy helped me get the wires done correctly. The number is 800-468-1502.

Posted on Jan 05, 2009

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Posted on Jan 02, 2017

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