Question about Heating & Cooling

1 Answer

Instaling a wall thermosstat RTH11/RTH221, the old thermosstat has a yellow wire and a red wire from the wall, Ware do i conect the red wire? on the G-termanal the Rh termanal or W Termanal? Also how do i turn on to test if it is working.

Posted by on

  • blentyn Apr 24, 2009

    I have an RTH22 also and I have 4 wires. Blue, Red, White, and Green. The heat works fine but the AC won't come on. I have the red connected to Rh, the white to white, and green to green. Do I use the blue one?

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Sergeant:

    An expert that hasĀ over 500 points.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 330 Answers

RED TO RED YELLOW TO WHITE

If you have a OHM meter, you can test it first to find out which one is neutral wire ( same as white wire position) before you connect the wire, usually red wire or black wire are hot wire.

Posted on Jul 06, 2008

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 to set up??


First, you have to make sure that the thermostat is set to conventional and not heat pump. Then, the best way to know where the wires go, is to mark what terminals the came off of from the old stat. If that isn't possible, the next best thing to do is go to the unit and see where each wire goes. This is because the wire colors are not exactly set to any certain standard. It's at the discretion of the person installing the system in the first place to use whatever colors they like, to work any part of the system the choose.
The basics/commonly used colors are:
Red- R terminal- Power
Green- G terminal- Fan
White- W terminal- Heat
Yellow- Y terminal- Cooling
Blue- C terminal- Common
Heat Pump Thermostats use more wires, such as:
Orange or Black - O/B terminal- Reversing Valve
Brown- W2/Aux terminal- Heat

My suggestion would be that your black wire is for your cooling(Y), and all other colors wire up to the corresponding terminals. There are many systems that are ran only by 2 and 4 wire setups, therefore, it's possible that whoever ran your wire initially did not have a yellow wire in the strand. Also, if there is a yellow wire in the strand(possible 7wire strand), it could also be that the wire had a short and they switch the wires to bypass the short. Hope this helps and Happy Holidays!

Dec 01, 2013 | Honeywell Programmable Thermostat Heater

1 Answer

Installed the Honeywell RTH2300/RTH221 but the old thermostat was removed by someone else. Since the original wires were not labeled, I simply attached them to the new thermostat by following the letters...


This appears to be a thermostat installation that was made without regard to wire code. The Honeywell material I have suggests it may be necessary to check connections at the furnace end and work back to the thermostat. There may be compatibility problems between the number of wires in the old installation and terminal connections in the new thermostat. Honeywell may be able to help at 1-800-468-1502.

Oct 29, 2013 | Heating & Cooling

1 Answer

I am installing honywell thermostat rth111/rth221 old thermostat has two wires that are yellow and need to know where to hook up


First things first. What type of system? Heat only, boiler or furnace? Central cooling.
Do NOT take wires off the old thermostat yet, or mark the color wire, to the terminal letter. Most times W,Y,G,R, terminals and maybe even a C terminal.

Your new thermostat should have the same letters. Sometimes they mix up color wire with terminal letters...... example (yellow wire to w terminal)
Also turn off power to equipment it is controlling. It is not high volts but you can short out the transformer. Hook uo wire color to same letter terminal on old stat, to new stat. Thats it.

Nov 12, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

Trying to replace Intermatic with Utilitech inwall timers. Have 2 black wires in wall box with other switches for other lights. Which of the Utilitech 4 wires- black, red, white & green get conected to...


The wires on your new switch are intended for black = power .. white = neutral . and red = lights .. with two black wires on the old switch I am assuming that there is a bundle of white wires in that wall box, the white timer needs to join that bundle ... then you need to determine which black wire is the power from the electrical panel ( voltage tester) and connect to the black timer wire .. the red timer wire connects to the other black wire in the wall..

Please Vote !!

Apr 08, 2010 | Intermatic Inc. EJ500C Digital Wall Switch...

2 Answers

I am installing honywell thermostat rth111/rth221 old thermostat only has two wires red and yellow new thermostat has terminals marked Y,G,Rh and Rc with jumper,W. where do I connect red wire and also the...


The red does go to RC, but the yellow should go to the W terminal, in HVAC W=heat Y=Cool, so aslong as the same wire is on RC on the t-stat, and RC on the unit, and same wire to the W on the t-stat as to W on the unit it should work!

Jan 31, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

Broken wire from a nail. how do i fix/splice?


I think you are saying a nail was driven into your wall and has gone through your thermostat wires? If that's the case here is a simple solution. Go to your local building supply such as Home Depot. Buy a an "old work" box which is designed to go into your wall where there is no stud. It will require you to cut a rectangular hole just large enough for the box, then tighten the screws to install... but dont do that yet. Get the box and a white or beige plain cover to fit it. The plain cover should have no holes except for the two screws to afix it onto the old work box. Cut a small hole next to where the nail went into the wires. Remove the nail and pull the wires out slightly. See which side has more slack. Locate the old work box on the side where the wires are shorter or tighter (less slack) and pull the other wire into the box so that both can be spliced together. If necessary finish cutting the wires the nail didn't sever. Do not cut red with any other wire at the same time because red is the power (24 vac hot) going to the thermostat. When you have pulled both wires into the old work box and tied a knot to prevent them slipping out, then fit the box into the wall hole and tighten the screws to draw the box snug to the wall surface. Splice each color with a wire nut, tiny wire nuts that are blue or grey are for 18-24 gauge bell and thermostat wires. Join red to red, white to white, yellow to yellow, blue to blue, orange to orange, green to green, etc until all are finished. Doing this will eliminate the need to research which wires are actually in use for your application. Install the cover plate. Test your repair.

Dec 23, 2009 | Goodman GMS90703BXA Heater

1 Answer

How can I wire fluorescent tube light.There's 2 cables incoming through the wall.One has red,black and green/yellow.Other has red and black only.I've tried connecting both reds from the incoming cables to...


if you have 1 switch ! take the cabel wiv the yellow red black an green conect green to E earth , conect the to reds together that will feed the switch connect the black to the nutral on the light fiting and tape up the yellow not needed !,then take the cabel wiv only red and black , the red is connected to the other red as explaind above ,then the black is the return from the switch therfor connect it to the live tuminal on the light fiting MAKE SURE U TURN IT OFF AT THE FUSE BORD FIRST PLEASE!!!!!!!!!!!

Sep 29, 2009 | Hydrofarm Hydrorfarm Flco200d Fluorescent...

1 Answer

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

Oct 19, 2008 | Heating & Cooling

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

Related Topics:

365 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

paulcarew

Level 3 Expert

2275 Answers

Dan Webster
Dan Webster

Level 3 Expert

8205 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...