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My Honeywell RVL 3100 Thermostat does not shut off. I had several short circurts through bad installtion of wiring, now my thermostat does not shut off, heat stay on. Is my thermostat broken???

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6 Suggested Answers

  • 49 Answers

SOURCE: Intertherm to Honeywell thermostat

Typically if you have a yellow wire in the "y" terminal blue is used as common or "c". As far as your jumper from rc to rh, that will depend upon what type of heat you have. If all of your heat and cooling come from your packaged unit outside, yes you will need the jumper. If this does not work maybe you have a bad breaker or transfomer.

Posted on Oct 14, 2007

Therinnaiguy
  • 1420 Answers

SOURCE: Replaced thermostat on FA4ANF030 with Honeywell model rth3100c does not work

4-wire typical wiring of a thermostat is: Y (Yellow) G (Green) W (white) and R (red). Inspect the thermostat to see if it has a jumper from R1 to R2. If not, put your red wire on R2. On a 5-wire thermostat you may have a blue wire. This will go to the common terminal (usually C but sometimes B) check the inline fuse in the air handler to see if it has blown. Replace it only after wiring the thermostat correctly.

Posted on Dec 03, 2007

  • 1 Answer

SOURCE: Honeywell Thermostat RTH 7500

Assumed all the wiring are correct,

to change from manual switching from heat to cool, press [system] button ( left ) to go into system setting.

then press and hold the [fan] middle button untill option display 120

use up down button to select option 300 ( Manual/Autochangeover) ,

select 0 for manual, 1 for automatic. ( read caution in page 22 of installation manual )

Good luck

Posted on Oct 14, 2008

  • 252 Answers

SOURCE: 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

Posted on May 16, 2009

johnsonr1
  • 91 Answers

SOURCE: Need to know wiring diagram for a weathertron

this link has a good diagram of the wiring. It should help you.

http://www.hvacmechanic.com/forums/hvacr/messages/17573.htm

Posted on Nov 05, 2009

  • 577 Answers

SOURCE: Wiring instructions for Thermostat Honeywell with Carrier Package

Jumper R to Rc and hook hot wire from transformer to R usually red wire
O = Reversing valve probably white or orange If you get heat when calling for cool or Vice Versa then switch wire from O to the B terminal.
Y = Contactor usually yellow
G = Blower usally green
Jumper Aux to E need to go to unit and use the wire that goes to your Auxiliary or 2nd stage heat
L = Light if you have this terminal on your unit then hook it up.
C = Common from transformer usually black, if you have this terminal on your unit hook this wire up.
Make sure you go to your unit and only hook these wires up if they go to these locations.

Posted on Jan 11, 2010

Testimonial: "everything is working like a charm now. Initially it was not running but after 5 minutes or so the Fan came up and it is working fine. Thanks"

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Can I install this thermostat to a Geo Thermo Premier 2 Water Furnace with the following wires connected as follows from old Honeywell thermostat TA511M1010? Old connection; R, C, Y1, W, Y2, L, O, G


Yep, you should be able to run your water furnace with the thermostat. Just wire it up same letter to same letter on both devices. If your thermostat worked before, it should work again. I couldn't find the honeywell part you listed, but the terminal designations tell enough on their own. Don't forget to shut off all power sources before doing any wiring, and to configure the control board on the water furnace before switching the thermostat to any active mode.

In case you don't have it, here's the install guide3 for the water furnace.
http://www.waterfurnace.com/literature/premier/IM1555.PDF

Please mark me helpful and feel free to ask more questions in this same thread if you need to.

Jan 03, 2015 | Honeywell Air Conditioners

1 Answer

Honeywell chronotherm iv plus


Disconnect the T-stat wires from the contactor while the T-stat is still off and measure for 24-28 volts from those wires. If the voltage is there then the T-stat is bad. I believe the contacts on the contactor are just welded shut (not uncommon), and the T-stat is fine.

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1 Answer

Changing From Trane to Honeywell


Color ---> New stat terminal

Blue--------C
Green------G
Yellow-----Y
Orange----O
Red---------R
White------E and Aux.
Tan---------unused, tape and secure it

If there is Rh and Rc or R and Rh, these terminals should be jumpered together.

I used to install Weathertrons eons ago. Whatever you do DO NOT connect the blue wire to the B terminal, you will short out your low voltage transformer immediately when you switch to heat

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1 Answer

We just installed a honeywell thermostat, our furnace is an old furnace and now it won't shut off. it is a hot air oil furnace. any suggestions


for a quick test -- remove the wires from the thermostat and see if the heater shuts off then,,, if it does shut off then the problem is the type ( model ) of the thermostat and it may not be compatible with that heater or there is something wrong with the way that the thermostat is wired. ( make sure that the thermostat is reading the correct temperature and is in fact in the off position ). also double check the wire color code at the heater and make sure that the right wires are connected proper.
what model is the thermostat ?

c...

Jan 03, 2011 | Honeywell Air Conditioners

1 Answer

I just got a new honeywell thermostat and it when i first hooked it up it wouldnt turn on so i check to find out which connections on the thermostat when open i changed my wire to make it correct now when...


Hello my name is Heath it will be my pleasure to assit you. If you did not turn the power off to the furnace before rerplacing the thermostat then you may have burned out the board in the furnace. But first if there is a RH/Rc terminal in the new thermostat then try removing the jumper between the two and see if the thermostat will operate properly.

Oct 08, 2010 | Honeywell Air Conditioners

1 Answer

The digital display is not functioning


the thermostat could be bad. It may have gone bad on its own or due to a short in the supply wiring. Sometimes mice will chew on the wiring in the wall that leads to the thermostat. But I wouls change the thermostat. They do go bad. Make sure you turn the inside unit off first in case you accidently touch wires together. This will blow the transformer inside the unit if the fuse doesn't blow first. I even scene thermostats with fuses inside. So you may want to take the thermostat apart and check for inside fuse also.

Jun 18, 2009 | Honeywell Air Conditioners

2 Answers

Changed out a Honeywell Thermostat with an Aprilaire Thermostat


The smell is usually dust on the wires for electric resistance heat.The thermostat shouldnt have anything to do with it.

Nov 19, 2008 | Air Conditioners

1 Answer

Honeywell t8601d showing a square symbol error - in past this has indicated low refrigerant. Tech came out, said need to replace thermostat, as compressor would not start, but if manually connected wires,...


There is a sensor that shuts the compressor down when the freon (refrigerant) is low. The tech probably "shorted" out this sensor. If the unit went on when he did this, the charge is low.

Jul 07, 2008 | Honeywell Air Conditioners

1 Answer

My Honeywell T87F Thermostat doesn't shut the A/C off when the temp in the room gets down to the Thermostat setting. I have it set on COOL and AUTO. I have to shut the A/C off; then later turn it back on...


Remove the thermostat and disconnect the r and y connection. If the A/C continues to run ya got a short in the wiring somewhere. If it shuts down then your tstat is hooped.

Jun 09, 2008 | Honeywell Air Conditioners

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