Question about Heating & Cooling

1 Answer

I installed a Honeywell Pro Th4000 and am wondering if the wiring is correct. I only use it for heat no air conditioning. There are only two wires one white and one black. Does the white one go to the W and the black one go to the R. I have a boiler furnace with a pump.

Posted by on



1 Answer

Id say that's probably correct. Since you only have 2 wires, if it doesn't work one way, it has to be the other!

Posted on Nov 09, 2014



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Honeywell thermostat th4000

Hard wiring on newer t-stats calls for a jumper from R to Rh. If that doesn't work, or isn't the problem then check for 24V at the unit board from W to common. If you have 24V there the stat isn't the problem. I don't know if your heater is gas or electrical, so there's not much else to say.

Jan 04, 2014 | Heating & Cooling

1 Answer

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

Had electrician install RTH2310B Honeywell thermostats but am getting no heat

check to make sure that it's wired correctly. R(red)power, G(green)common, Y(yellow)cooling, W(white)heating, O(orange), E(emergency)heat. Make sure that you have the correct thermostat because there is a heatpump thermostat and there is an air condition thermostat and they are wired differently.

Nov 27, 2010 | Honeywell Programmable Thermostat Heater

2 Answers

Just had a honeywell th4000 installed but the heat won't cut off? The temp keeps rising had to cut it off just so I wouldn't burn up? Tried setting the temp down to about 67 but the temp just kept rising

Sounds like they either wired wrong or they got the white wire touching the red wire. Take the cover off the thermostat and see if you can tell if the white wire is touching the red wire. Installers are bad about leaving tag ends on the wires and they end up touching other wires. Good luck

Nov 30, 2009 | Honeywell Heating & Cooling

1 Answer

No Auxiliaty heat with new thermostat

The Vision Pro is a great t-stat and I have installed many of them with great results. I am wondering though if it is set up correctly. Did you go in and make sure that it is set for heat pump and for 2 stage heating? Look on the instructions how to get into the advance installer options. Go through that meanu and make sure that everything ig set correctly for your type of heating system and that it is set for 2 stage heating. From what you have here and I can tell the wiring should be okay that is why I think that it is in the t-stat programming.

Nov 15, 2009 | Honeywell Electronic Programmable...

1 Answer

I have a honeywell t-stat th4000 and brings on the outside air every 15 minutes there is something in the stat.

If you have the install instructions it should tell you how to get into the installers setup and change that setting.

Nov 02, 2009 | Honeywell Heating & Cooling

1 Answer

Need wiring for honeywell pro 3000 in trane xe1200

the pro 300 is a single stage thermostat and can not be wired to control 2 heat stages seperately

May 16, 2009 | Heating & Cooling

1 Answer

Wiring diagram to connect programmable Thermo to Heat Pump

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.

Jan 05, 2009 | Honeywell Programmable Thermostat Heater

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

39 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

Paul Carew

Level 3 Expert

3248 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Tim Whalen

Level 3 Expert

3074 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides