Question about Honeywell Heating & Cooling

Open Question

Honeywell 7512A. Working fine. Turned off power yesterday notice no display so once power was restored I changed to new batteries. There should of been a display due to the batteries. New batteries were checked fully charged. Breakers were all reset. Batteries are in properly. Now I have no display. Polarity is correct. Wiring configurations is White to white. Orange to Yellow terminal. Green to green. Black to red terminal. Red to RC terminal. I have airconditioning and heating.

Posted by on

5 Suggested Answers

  • 7 Answers

SOURCE: changing thermostat matching wires trouble

Brown my friend is for the 4 way valve solenoid, that is if you have a heat pump, ( it uses freon for heating instead of natural gas) perhaps you got the wrong thermostat, if you have a brown you need a thermostat for a heat pump, a regular thermostat is not going to have a brown connection.

Posted on May 08, 2008

  • 61 Answers

SOURCE: Thermostat wiring

your best bet and where i would start is to identify where the coulors are conected at the fernace. in the industry we use standard wireing coulors wher green is g for fan and red is rh=switched trans power for heating . rc=switched transformer power for cooling . now normaly there is only one transormer so you would put a jumper from rc to rh and conect the red wire from the furnace to eather of these.jumper installed. the y is your cooling witch is normaly the yellow wire. o on the stat is for a heat pump if you nead to energize reversing valve in cooling mode . w is first stage heating and this can be conected to eather brown or white youll have to check at the furnace to see witch it is . the final wire eather brown or white should be conected to c or 24v common witch you didnt say you see on the thermostat. once again
red to rc and rh
green to g
yellow to y
brown or white to w
brown or white to common or c


please post feadback hope i was of help

Posted on Oct 21, 2008

  • 306 Answers

SOURCE: I'm installing a Honeywell RTH7600B

Every thing the same except take your blue wire and replace the yellow for it. So when you hook it to t-stat goes like this

Red to R
White to W
Green to G
Blue to Y


Posted on Jan 16, 2009

peyton32034
  • 410 Answers

SOURCE: thermostat wiring goodman model aruf032-ooa-1b

is this a heat pump or straight cool with heat strips?

Posted on Mar 16, 2009

  • 415 Answers

SOURCE: recently changed thermostat on gas furnace w/ cent air

Unfortunately, a strick standard does not exist for wire terminals and colors. However, there are "norms" which I will be happy to share with you.
Red - Rh & Rc (Jumpered)
Blue - C
Yellow - Y
White - W
Green - F


Note: this is assuming you have only ONE transformer in your low voltage circuit for both heating and cooling. If there is a low voltage transformer at your outdoor unit you will need to seperate Rc & Rh. At this point, I have to recommend a trained, qualified service technician. A good service technician should be able to resolve the wiring issue in under 30 minutes.

http://www.youtube.com/watch?v=_HyhUyU-AMI
I only wish I was able to look at exactly what you have to include tracing all the wire back to the furnace and condensing unit. Tracing the wire is the only sure-fire wire to do the job correctly.

I wish this could have been a black & white answer; however, I do hope you found this information helpful in your endeavor. Good Luck to you! :-)

Posted on Mar 10, 2010

Testimonial: "thanx,but i figured it out....new thermostat required a battery for led display...elim. blue added jumper-good to go....thanx though!"

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

How to reset Honeywell UDC2500


The procedure to restore the factory configuration on the Honeywell UDC2500 is on page 180 in the PDF manual from Honeywells website.
Steps:
1. Turn off power to the instrument for at least 5 seconds.
2. Turn power back on and simultaneously press the "FUNCTION" and the UP keys. This must be done while "TEST DONE" is being displayed.
3. If step was performed correctly, the instrument will now display "UDC" [Upper line] "UPDATE" [Lower line]
4. Press the "FUNCTION" key. The instrument will now display "DIS" [Upper] "RESTORE" [Lower]
5. Press the up arrow key. The instrument will display "CFG" "RESTORE".
6. Press the "FUNCTION" key. The instrument will display "DOIN" "RESTORE"
After that the instrument will go through a restart.

Hopefully this helps.

Mar 04, 2013 | Honeywell Udc2500 2 Output Relay Tc Input

1 Answer

We installed a honeywell RTH110B thermostat last year. It was working fine. Since then I have changed the batteries. Now I can't get any display. The batteries are good, I've tried a couple of...


From your description the only possible thing it could be is the thermostat. The screen has gone bad. Replace thermostat.
Hope this helps.

Sep 19, 2011 | Heating & Cooling

1 Answer

I changed the batteries of the Honeywell thermostat and on the screen it still shows low battery.


Hello my name is Heath it will be my pleasure to assist you. Take the new batteries out and let the display go completely blank then reinstall the new batteries and the lo batt light should go off.

Nov 08, 2010 | Honeywell Heating & Cooling

1 Answer

I turned my ac off yesterday. I turned it back on tonight and it would not turn on. I noticed it was flashing (Change batteries) so I put new ones in. I waited till the cool on stopped flashing and it...


Hi, there is nothing more aggravating than having your household appliances not work.
Like a computer, the "thermostat" (it holds the batteries) retains the information you program (maybe the technician) to set the temperature controls.
The highs and lows can normally be bypassed with the push of a button.
Removing the batteries clears the memory. (Volatile memory).
When this happens, you must reprogram the thermostat so it knows what settings to operate at.
Can you get the instructions on how to program the thermostat? The instructions are usually on a paper on the thermostat lid.

(when changing batteries, remove one battery, then put a new one in its place before removing the next one. This keep some power to prevent the settings from being cleared.

Oct 08, 2010 | Goodman GPC1342H21A Air Conditioner

2 Answers

Honeywell T8400B Thermostat Display Intermittently Blank


most likely a bad tstat i would replace I recommend honeywell focus pro 6000

Jan 29, 2009 | Heating & Cooling

1 Answer

Dometic control comfort control will not turn heat on or off


I had the same problem. I fixed it by turning off the battery switch to disconnect the battery from the power panel. I then had to turn off the main 110 breakers to shut down the converter. Once all the power was turned off the LED light went off. When I turned the power back on the remote was working fine. Hope this works for you.

Jan 09, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

Thermostat message battery low. Put in two new batteries and it will not reset or start. Lost Power during storm and cannot get it going again.


Let me see if I understand your question.. your thermostat indicated the batteries needed to be replaced so you changed them with new ones.. With new batteries, you cannot get your thermostat to initialize or program correctly and as a result of that, you cannot get your AC system to start up.. If that is true, please provide the Honeywell Model # and verify the batteries you installed were Ok,...
Will attempt to assist once you've provided this info..

( on an off chance, have you checked the fuse or cuircuit breaker for your AC system to make sure it has power available?) This is especially important after a power outage..

Sep 16, 2008 | Honeywell Heating & Cooling

5 Answers

I have a Honeywell T8131C programmable thermostat. Our power went out yesterday, and now the "Bat Lo" won't go away. We replaced the batteries, but the "Bat Lo" indicator stayed on...


I tried all the tricks mentioned previously to no avail.

These are the steps I performed to get it to work:

1. Remove batteries and make sure the battery contacts inside the unit are clean.

2. Disconnect all the wires from the back of the unit. Be careful not let any of the bare wire ends to come in contact with each other. Make sure you mark the wires or verify that the color code matches the markings on the rear cover:
W=White wire;
Y=Yellow wire;
G=Green wire;
R=Red wire (low voltage DC); and
C=Common (wire color varies)

3. Leave the unit disconnected with batteries removed for about an hour to make sure all the memory drains. I waited an hour, but it may not require that much time.

4. Install the batteries in the correct positions per the instructions. The unit should perform a power up display test, then the display will flash the time and temperature.

5. Set the clock and the display will stop flashing.

6. Slide the switch to cool and/or heat and program the desired weekday/weekend settings.

7. Slide the switch back to off once all weekday/weekend settings are made.

8. Reconnect the wires that were removed in step 2.

9. System should be operational at this time.

May 29, 2008 | Heating & Cooling

1 Answer

I have a Honeywell Programmable Thermostat T8600 and nothing displays. It was working fine, and the A/C was on on Saturday. I checked the display on Sunday and the thermostat was blank. All other lights...


check your transformer for power, should get 24V reading, if transformer is out make sure there are no short otherwise your new one will have the same fate.before checking the transformer however, make sure that your dedicated breaker for the air handler and your switch in the attic is turned on.

Apr 15, 2008 | Honeywell Heating & Cooling

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

Related Topics:

29 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honeywell Heating & Cooling Experts

Bill Long

Level 3 Expert

587 Answers

paulcarew

Level 3 Expert

2096 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...