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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Dec 08, 2013 | Honeywell Programmable Thermostat Heater

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I have Honeywell Pro TH4000 series. The fan will not come on what do i do

It really depends on the circumstances. Are you just trying to turn the fan to the "ON" position from the "AUTO" position? If that is the case, there will be a problem with the thermostat, wiring to the thermostat, or the unit itself. That would sum up a "thermostat" problem for the fan not working. If your trying to call for HEAT/COOL and the fan isn't coming on, that is another issue.
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Dec 08, 2013 | Honeywell Programmable Thermostat Heater

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Programmable Thermostat Heater: no power to honeywell central heating control...

Multiple possibilities:
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May 18, 2010 | Honeywell Programmable Thermostat Heater

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I have a furnace with a heat pump and want to replace my old thermostat with a programmable one. Do I need a certain thermostate? I'm looking at the Lux TX9000

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Also look at the Honeywell vision Pro 800 series t-stats they are touch screen, very easy to operate and dependable.
Make sure that you label your wires well before removing them and also turn off all power before remove so that you don't run the risk of burning out your transformer.


Jan 07, 2010 | Heating & Cooling

1 Answer

I have a pro th4000 series honeywell programmable thermostat and its for system type th4110d electric heat with ac how do i set the thermostat to drop a few degrees before the heat turns on right now i got...

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