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


Depends on what type of heat you have...gas, oil , electric, heat pump? Make sure it is the right thermostat for your heat source. Some thermostats have a switch on the back for fuel or electric.

Dec 08, 2013 | Honeywell Programmable Thermostat Heater

1 Answer

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.
You can try to see if the G terminal is hooked up on the thermostat, that's going to be your "FAN" terminal. If it is connected, you will have to go to the unit and see where it is connected. At this time, we would need to know the model and manufacturer of the unit. Thanks, hope it helps.

Dec 08, 2013 | Honeywell Programmable Thermostat Heater

2 Answers

HONEYWELL RTHL2310/RTHL221 THERMOSTAT AIR WILL NOT COMEON


Recheck your connections.The wire colors may not have been wired in the standard way when HVAC system was installed. I remember the instructions on my Honeywell thermostat(replaced mine about 2 months ago) stated that you should look at the wire LOCATIONS on the 'stat you're replacing and tag the wires according to this,not the wire color(too late in your case).You'll have to verify the wires.Disconnect them(don't worry about noting where they were as it's not right anyway).Using an A/C voltmeter,locate the hot feed to the 'stat(ground one lead of the meter at a nearby outlet and look for 24v on any of the wires).Tag it as "feed".Now,touch this to each wire until you find one that turns on the ventilation blower and tag it.Try the other two,one of them should turn on the outside A/C condensor unit(this is the A/C wire).The remaining wire's gotta be the furnace,but verify anyway.This should be enough to get you back on track(don't feel bad,the instructions in my 'stat confused me a little,even though I've replaced mine a couple times before).PS- I think the blower fan wire goes to the terminal with the little factory jumper wire-this is so you can set it up to run the same fan in heat or A/C(factory setup) or remove the jumper to run a seperate fan for each(highly unusual setup but possible)

May 25, 2012 | Honeywell Programmable Thermostat Heater

1 Answer

I just purchased a house with brand new furnace wired to a RTH2300 Honeywell thermostat. It only has two wires running to it. I can't seem to get it to work in "manual mode"-where I set it on...


?? Connect Wires 5.

Labels don't match?

If a wire does not match any terminal on the thermostat,

see next page.

Quick Installation Guide

6

Alternate Wiring

If a labeled wire does not match any terminal

designation, see diagram below.

Do not use C, C1 or X wire. Do not use B wire if you already

have O wire. Wrap bare end of wire with electrical tape.

This thermostat cannot be used if your old thermostat had

any two of the following wires: R, RC, RH, 4 and V.

Place a jumper (piece of wire) between Y and W if you have

a heat pump without auxiliary/back-up heat.

?? Connect Wires (cont'd)

Programmable Thermostat RTH2300

7

Set jumper JP1, on the back of the thermostat, if you

have connected a wire to the G terminal.

Incorrect jumper setting: An incorrect setting is

noticeable in a gas or oil heating system. When heating

starts, you will initially feel cold air coming out of the vents

as the fan is running before the furnace has enough time

to heat up the air.

?? Set Heating Fan Control 6.

HG Leave the jumper in this factory-set

position if you have a gas or oil furnace.

HE Place the jumper to this position if you

have an electric furnace.

JP1

Quick Installation Guide

8

Set jumper JP2, on the back of the thermostat, if you

have a heat pump.

Incorrect jumper setting: The heat pump operation

will be reversed, i.e., it will cool in Heat mode and will

heat in Cool mode.

?? Set Heat Pump Reversing Valve 7.

O Leave the jumper in this factory-set

position if you have connected O wire to

the O/B terminal.

B Place the jumper to this position if you

have connected B wire to the O/B terminal.

JP2

Programmable Thermostat RTH2300

9

1) Install 2 AAA

batteries on the

back of the

thermostat.

2) Align the two

brackets on the

top of the

thermostat with

the corresponding

slots on the top of

the wallplate.

3) Push the

thermostat

against the

wallplate.

4) Tighten the screw

at the bottom of

the thermostat.

5) Turn power back

on at the heating/

cooling system.

Nov 27, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

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


Multiple possibilities:
Damage to cable (doing any DIY?)
Failure of thermo
Board gone in heat unit
Possibly simple as loose or disengaged connection, check at thermo & heat unit, if nothing obvious, call serviceperson.

May 18, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

New thermostat not cooling. Blowing heat instead.


Hello You have only 5 wires? multi stage if so ,is run by something else.Check that RH/RC is jumped out on new stat.Also check that O is not on the B terminal.If there is an A/B select switch set it to O.Emergency heat button dont matter as there is no wire to run it with only 5 wires.

Apr 17, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

Thermostat honeywell


If installed the right way it should!

Dec 08, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

Y1 W1 Wire from older Honeywell to new RTH honeywell


Y1 means for cool and W1 means for heat. Connect accordingly.

Aug 11, 2008 | Honeywell Programmable Thermostat Heater

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