Question about Honeywell Programmable Thermostat Heater

2 Answers

Problem with Honeywell RTH230B Thermostat

I have purchased Honeywell RTH230B thermostat. When the set point temperature is lower than the actual temperature, the fan will be working if I set it to auto. If the set point temperature is higher than the actual temperature, it will not work, it sounds normal for the cooling. But the temperature would not decrease into my setting point…. What is it wrong with it? Does anyone know how to help me?

Posted by on

  • pstamm May 29, 2008

    Running into similar problem with Honeywell RTH230B, however Heat worked fine, now A/C won't turn on.



    Wire colors from wall: White, Yellow, Red, Green, Black

    Connections on tstat: Rh, Rc, Y, G, W



    What is the correct wire to connection combination?

  • mojokes Apr 25, 2009

    Old thermostat is long gone and I've forgotten the terminals and where things were hooked up.

    Honeywell t-stat terminals: Rh, Rc, W, Y, G.

    My five wires: Red, Black, White, Yellow, Greed



    The heat worked fine all winter. I turned the A/C on today and I get nothing. I imagine my problem is related to my Black, Yellow, and Green wires. Is the black even needed? I can't get a voltage reading across the black and yellow wires, which are connected into Rc and Y, respectively.



    Do I need to ditch the black wire and put a jumper between Rh and Rc?



    Oh....natural gas furnace if that matters (remember, heat works).

×

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 46 Answers

Sounds like you have it wired wrong..   Pop the top off and give me to color of the wires and tell me which letter each color wire is on.. that will tell us right away if you have it wired wrong

Posted on May 27, 2008

  • Buck Whyte
    Buck Whyte May 30, 2008

    ok correct wiring with the stat you have is.. 


    white to W
    red to rh or rc there should be a small jumper that runs between rh and rc
    yellow to Y
    green to G
    NOW the black wire is a question mark... there should be a 6th position on your stat with a B stands for blue.. MOST techs use this diagram.. but may not have had stat wire and used telephone wire.. seen this many times..


    Hope this helps

×

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

My wires are as follows.red,white,black,green.where do you put the jumper cable
my model no. is honeywell RTH230B and old model..I don't have the color blue or yellow in this thermostat

Posted on Oct 14, 2011

1 Suggested Answer

  • 4756 Answers

SOURCE: thermostat won't keep furnace fan running

You probably have a loose or broken wire to the fan relay. Check the wires on the thermostat first. Pull up on the bottom of the thermostat to remove it from the wall plate. You should see several screw terminals and the conductor wires that should be connected to them when you look at the wall plate. Check if any of the wires are disconnected or broken. If a wire is broken, strip a portion of the unbroken section of the wire and secure it to the appropriate screw. (The fan relay terminal is G for most setups.) If none of the wires are loose or broken, then you have to check for damage to the wires between your heating system and the thermostat or at the heating system. It could be a bad wire going to the jumper on control board or damage to the board itself.

I hope this helps. If the problem is not at the thermostat, you may need to have a professional diagnose and fix the problem. However, if you post additional comments about your heating system, Fixya experts may be able to help you diagnose the problem.
Cindy Wells
(we had the broken wires at the thermostat keeping the fan from working in the past. It's an easy fix if you are willing to handle small wires carefully.)

Posted on Jul 06, 2013

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

3 Answers

Dip switch settings rthl2310


Check for cold air inside the wall behind the thermostat, a cold wall, and area that is getting hot or cold air blowing on the thermostat. Last, the heater may not be compatible with some digital thermostats. Honeywell Customer Care toll-free at 1-800-468-1502.

Aug 29, 2014 | Honeywell Programmable Thermostat Heater

1 Answer

Incorrect ambient temperature on Honeywell Model RTH221B


Check in your manual for the thermostat. By pushing a combination of buttons you can get into the advanced installer menu. From there you can make an adjustment to correct the temperature.

Nov 11, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Honeywell RTH230B a/c problem


if you set the thermostat on 70 and your house won't get ant cooler than 72, there is a problem with your system,not your stat. I'm thinking you are low on refrigerant if it is somewhat working. when the unit is running, if you can get your hand on the larger refrigerant line under the black insulation, it should be cold, about 55 degrees.

Jun 19, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Rth230b thermostat, want to change C* to F*


Turn the thermostat mode to off. Push & hold both temperature up &down at the same time and screen on tstat should change and display Unit this is where you change C to F setting. I dont quite remember how to exit, if you change your setting and leave tstat alone and it should change automatically Good luck
F

Jan 08, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

New honeywell thermostat on new gas furnace not working


sometimes there's a differential setting anywhere from 1-3 degrees, see if you can make sure it's down to 1

Nov 12, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

Honeywell rth230b thermostat doesn't work


On most Honeywell Digital T-stats there is a 5 min delay built in

Oct 23, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

Model RTH230B uses a lot of batteries


THIS TYPE has been deemed defective! changeout to a different type.

Sep 04, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

Problem with Honeywell RTH230B Thermostat


I have my temp on C and I need to change back to F I have the RTH230B programable

May 30, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

Honeywell rth230b won't shut off heat


Sounds like a relay sticking. Possibly in the thermostat or possibly the furnace relay at the furnace. The next time it happens, unplug the thermostat from the wall. If the furnace still runs then it's the furnace relay.

Hope that helps...

Geno

Mar 07, 2008 | Honeywell Programmable Thermostat Heater

2 Answers

I can't program my thermstat


go to www.honeywell.com. There you will find a search tab. Type in the exact model number of your thermostat. You will be able to download the installation/owners manual.

Nov 29, 2007 | Honeywell Programmable Thermostat Heater

Not finding what you are looking for?
Thermostats Logo

Related Topics:

2,659 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honeywell Thermostats Experts

Bill Long

Level 3 Expert

577 Answers

paulcarew

Level 3 Expert

1875 Answers

Brandon Berry
Brandon Berry

Level 2 Expert

407 Answers

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

Answer questions

Manuals & User Guides

Loading...