Question about Honeywell Programmable Thermostat Heater

1 Answer

My new Honeywell TH4210D1005 thermostat does not have a "W" terminal for the white wire. The white wire was connected to the "W" terminal on my old thermostat. My heat pump has emergency heat. My choices to land this white wire are "Aux" aux heat relay or "L" sends output to E heat. They sound the same.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 674 Answers

I Googled the user manual for your thermostat. It says to install a jumper between E and Aux if there is no emergency heat relay. Here is a link to the manual. Look on page 5, line 5.
http://www.forwardthinking.honeywell.com/related_links/thermostats/pro_4000/install/69_1763.pdf

Posted on Sep 07, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Bought new thermostat model ct87k but old Honeywell model I have was hook up by black and white wire not red and white , so how do I hook up.


The two wire Honeywell T87 and CT87 is nothing but a switch in a control circuit. Wire color is not important at all. What is important is the TERMINAL DESIGNATION those wires are hooked to. Soooo....take the wire off of the sub base of the old stat terminal marked 'R' and attach it to the new sub base terminal marked 'R' and so on. Wire COLOR means nothing at all in your case.

Oct 04, 2014 | Honeywell CT87K1004 Round Heat Only...

1 Answer

I wont to replace my old robert shaw 9400 thermostat with a new honeywell rth111b thermostat but dont known the color wireing diagram


Hello, if this is a standard straghtcool/heat unit then Red- R terminal or Rh white- W terminal Yellow - Y terminal Green- G terminal Blue- Common terminal ( not always used) but ifyou do have a blue wire it will connect to this terminal.

Nov 19, 2011 | Heating & Cooling

1 Answer

I just bought a Honeywell 5.2 Day RTH2300B Programmable thermostat to replace my old mercury thermostat for my gas fireplace. When I took of old thermostat it only has two wires. A white wire and a black...


I just installed a Honeywell 5.2 Day RTH2310B Programmable thermostat and I had to deal with the same situation: 2 wires, one white one black. After reading the edvice in one of the blog, the solution that worked for me was: BLACK ON Rc terminal and WHITE on W terminal. My furnace is running fine now. Hope it helps.

Dec 06, 2010 | Honeywell Focus 6300B 5-2 Days...

2 Answers

Replacing WHITE-RODGERS manual thermostat with 3 wires ( red, white, blue and installing Honeywell electronic thermostat RTH110B, how do I connect it? The heating is not central, baseboard heating.


I have only seen one Honeywell thermostat that would work with a 3-wire heating system.

I would replace it with a White-Rodgers 1F80-0471. They are about $100, but they are a good thermostat, and they work well with the 3-wire zone valves.

Most other thermostats have the "Y" terminal that you need, but do not control the zone valve correctly.

Helping Hands Services
- Fairbanks, Alaska -

Jan 30, 2010 | Honeywell Electronic Programmable...

1 Answer

Programmable thermostat


I am unsure of your question, but if you are just replacing your old thermostat with a new one, then connect the red wire to the Rh or R terminal and the white wire to the W terminal on the thermostat. Hope this helps

Jan 09, 2010 | Honeywell Electronic Programmable...

1 Answer

I tried to insatll my new honeywell programmable. the old t-stat had a white and red wire connected allread. there were 3 other wires unused, G,W,R. I hook up the original R,W wires to the new t-stat and...


The red and white wires go to the R and W terminals on the thermostat. Disconnect what you have now and hook the red wire to the R terminal and the white wire to the W terminal on the new thermostat and see what happens.

Jan 09, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

Installing new thermostat


w--white--heat........g--green--fan..........y--yellow--cool....r--red--powerx---b----o--are for heat pumps...

Dec 20, 2009 | Honeywell TH4210D1005 Heater

2 Answers

Wiring new RTH2310 DIY Honeywell


sounds like you've got bear wires touching at the new tstat

Sep 18, 2009 | Honeywell Focus 6300B 5-2 Days...

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

536 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honeywell Heating & Cooling Experts

Bill Long

Level 3 Expert

587 Answers

Paul Carew

Level 3 Expert

2557 Answers

Brandon Berry
Brandon Berry

Level 2 Expert

407 Answers

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

Answer questions

Manuals & User Guides

Loading...