Question about Heating & Cooling

1 Answer

Wireing a honeywell thermostat

I am trying to replace a old mercury thermostat with a honeywell model rth3100c My old thermastat has a white wire going to W2, yellow to Y, green to G, red to R, orange to O, nothing to C or E. This is for a Heat Pump The new thermostat has terminals E, Aux,Y,G,O,L,R,B,and C Can anyone help? Thanks Bill

Posted by on

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
  • 520 Answers

Bill ..You dont have a heat pump.This controller will not work for a conventional system. Get the right thermostat

Posted on Jul 24, 2009

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.
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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

How do you relpace an A.C. thermostat?


E Back up heat/ white wire
AUX Jumper to E
Y yellow wire / Cooling - compressor
G Indoor fan Green wire
O Reversing valve energised in cooling most units Orange wire
L unknown. consult your manual Leave open
R Main power Red wire
B Reversing valve energised in Heat Rheem units only.
C Common second leg of power Blue wire.

Aug 30, 2014 | Honeywell RTH3100C - Digital Heat Pump...

1 Answer

RTH3100C thermostat for an older Lennox heat pump


well the wire on x will go to e thr r is the red wire goes to r the wire on f willgo to g the y will go to y now the rest you'll have to verfy at air handler o will go to reversing valve common wire will go to c the electric heat will go to aux

Feb 06, 2014 | Honeywell RTH3100C - Digital Heat Pump...

1 Answer

Replaced Bryant T-stat model TSTATBBNB001 with Honeywell t-stat


Hello,You forgot to wire the O terminal w1 witch is the reversing valve.It is important to check if old stat is using O or B in witch case B terminal=w1 leaving O unused.

Apr 21, 2010 | Honeywell Heating & Cooling

1 Answer

Replaced Bryant T-stat model TSTATBBNB001 with Honeywell t-stat


Your original wiring configuration seems to indicate that you have an air conditioner (not heat pump) and either a gas or electric furnace. If this is the case you may need a different thermostat for your application.

Apr 21, 2010 | Honeywell Heat/Cool Thermostat

1 Answer

I am trying to change Lennox to Honeywell


Just remember what wires went to which terminal. Usually color coded, red =R, white = W, etc, Shouldn't be too hard. Let me know if you run into a problem.

Jan 02, 2010 | Honeywell Electronic Programmable...

2 Answers

Heat will not shut off


Take white off of Aux, and attach it to L

Feb 16, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

I had an old thermostat that i had to change need wiring diagram


HONEYWELL WEBSITE:
Go to honeywell.com
Under red welcome sign
Bottom red highlighted box literature/image search
Type in thermostat model number
Click on arrow to right
Then click on the PDF files owners manual / installation instructions

Dec 20, 2008 | Honeywell Electronic Programmable...

2 Answers

I had an old thermostat that i had to change need wiring diagram


both thermostatats will have terminal designators R,W,Y,G, possibly O/B, C, W1,W2, Y1, Y2, etc.
Simplest method is to remove wires from old stat one at a time. mark where they came from and then install at same desinated terminal on the new t-stat. Hope this helps. be sure to shut off power supply to the unit (furnace) first. The wire coming to the R (RH,RC) terminal is the 24 volt a/c hot, all others are feeding back to perform given function.

Dec 20, 2008 | Honeywell Programmable Thermostat Heater

3 Answers

Honeywell RTH3100C


You need to go into the installer setting to change it from heatpump to single stage gas heat.Go to www.honeywell.com if youve lost them.

Dec 13, 2008 | Honeywell Programmable Thermostat Heater

4 Answers

Replaced thermostat on FA4ANF030 with Honeywell model rth3100c does not work


if you have a newer t-stat your heat pump reversing valve is either o or b depending on the type of system you have

Dec 02, 2007 | Heating & Cooling

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

Related Topics:

302 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

paulcarew

Level 3 Expert

2458 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Donni Steen

Level 3 Expert

659 Answers

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

Answer questions

Manuals & User Guides

Loading...