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I have a Honeywell RH230B thermostat. 4 wire connection. Rh and Rc have a jumper between them already. But the thermostat does not turn ON the heater.

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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pierre1811
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SOURCE: replacing thermostat: tstatccshp01 with th8320u1008

Hook up o to o/b, then in the installation programming set the change over valve to energize in cool. Then hook up w to aux. Good luck.

Posted on Jan 21, 2009

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  • 96 Answers

SOURCE: Upgrading Thermostat

Looks like your system is a heatpump system and that t-stat will not run a heatpump , you need a t-stat for 2heat and 1 cool systems

Posted on Feb 01, 2009

  • 252 Answers

SOURCE: RTH230B thermostat not working - nothing's happening

The 2nd combination is correct (w/ jumper). Wire nut or tape the blue wire. The snow flake shows it's going into cooling mode after a 5 min delay. If the AC is not coming on then the problem may not be the thermostat. If you don't have 24VAC between the red wire and the blue one the problem is at the furnace or it's supply. If you do, then check for 24VAC between the blue wire and Y on the thermostat(after the 5min delay) - if it's there the thermostat is calling for cooling. To check the heat, switch the thermostat to heat mode and use the W(instead of Y) on the thermostat(after the flame stops flashing).

Posted on Apr 02, 2009

  • 1015 Answers

SOURCE: Honeywell RTH 221 Programmable Thermostat. Jumper missing

The proper way to do it would be to use a small piece of wire stripped at the ends. Then use a small amount fo solder on each end to connect RC to RH. Or use a small piece of solid(stiff) wire and strip the ends. The wrap the ends around the connector and crimp them to make contact. I would not use a paper clip. A paper clip is not designed to carry 24volt current and could melt.

Posted on Nov 02, 2009

heatman101
  • 43501 Answers

SOURCE: Wiring problem?

Hi,
Yes to everything!!
You have it figured out!!
Just make SURE that the blue unused wire cannot touch any of the other wires, it will wreck your transformer in a split second.!

I hope that this will help you to solve your problem!

Thanks for using Fixya!!

Heatman101

Posted on Nov 25, 2009

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Honeywell RTH230B cooling problems...


I printed out the instructions for your thermostat. It looks like you should have the following.

There should be jumper wire between Rh & Rc

Red wire to Rh or Rc whichever is easier since there is a jumper. This is the hot wire and all the thermostat does is connect to route it to the components needed for heating or cooling.

Blue wire, tape it up and don't use it. There is no spot on this thermostat for it. It is only used on thermostats that are powered by the transformer.

White wire to W. Powers the heat relay

Yellow wire to Y. Powers the cooling contactor

Green wire to G. Powers the indoor fan relay

There is a black jumper on the back of the face plate. Look at section 2.4 Setting J2 Jumper in the installation instructions. Make sure you have it in the right position for what you have. If you don't have them just google them.

Hope this helps.

May 24, 2010 | Honeywell Electronic Programmable...

2 Answers

I bought a Honeywell programmable thermostat RTH2310 to replace my 10 year old Honeywell thermostat. My old thermostat is a 4 wire system but also has a jumper from Y to 1. New system does not tell me what...


It depends on the type of thermostat you have.
Do you have a 4 wire or 5 wire T'stat?
The red jumper wire was for a 5 wire t'stat with 1 transformer, the red jumper actually should have been from R to 1.
So you need to trace the wires back to the furnace and make sure they go to the locations identified below.
if you have a 4 wire t'stat then you don't need that jumper, if you have a 5 wire t'stat then you do need that jumper but it should go from Rh to Rc.
4 Wire Termostat
R = Red One Side of 24 volt Transformer
G = Green Blower
Y = Yellow Cool
W = White Heat
5 Wire Thermostat
with one transformer for both units
Rc One Side of 24 volt Transformer
Rh Jumper Rc to Rh
G = Green Blower
Y = Yellow Cool
W = White Heat
t'stat?

Nov 14, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Installing thermostat - extra wire?


you have to go down to your furnace and follow the thermostat wire ...it connects to a terminal strip or fan centre...the color doesn;t really matter...installers mix and match all the time....look at the furnace wiring and mark it down...Red on "R"...Green on "Y" whatever it is...and connect it accordingly upstairs...if you only have 4 thermostat wires downstairs you will need a jumper wire between RH and RC...if you have 5 wires you will see 2 wires on "R" at the furnace.,...and connect either to RH and RC at the thermostat
0d02834.jpg

Nov 01, 2009 | Honeywell Electronic Programmable...

1 Answer

My husband just installed the Honeywell RTH2310 thermostat. The fan turns on, but the furnace does not. What's our next step? (It's a natural gas furnace and he made sure that it is on correct h/e setting....


need to make sure there is a jumper between RC and RH if the red wire is connected to the RC terminal the heat wont work you will need a jumper wire to tie the RC and RC together with the red wire.

Oct 20, 2009 | Honeywell Focus 6300B 5-2 Days...

1 Answer

Honeywell RTH2310B Programmable Thermostat


i would check to see if thier is a jumper between RC and RH on the stat if no and the red wire is hooked to RH then you need to add a jumper to RC

Sep 19, 2009 | Honeywell Focus 6300B 5-2 Days...

1 Answer

Replacing a Williamson (White Rogers) Termostat


rh is power for cooling terminal and rh is power for heating terminal connect red wire to rc or rh and there should be a jumper between rc and rh if not install one all other wires are color coded correctly. now the blue wire is not used.

Jan 05, 2009 | Honeywell Electronic Programmable...

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

2 Answers

Wiring a thermostat


your red wire will go to the R, RC, or RH terminal on the stat does'nt matter which one ,this is the wire that provides 24 volt from the furnace. the white wire will connect to the W terminal on the stat. If there is a jumper wire that came on the stat going from RC to RH leave it on.

Mar 08, 2008 | Honeywell Electronic Programmable...

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