Question about Heating & Cooling

1 Answer

Wiring a thermostat.

Ruud heater model (-)HQA(-) five wires coming out of the unit. Two black labels G and W. One yellow wire coming from the 24v transformer. And one purple and one brown. Need to know how to wire just the heater without the air unit.

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 72 Answers

The green one is for the evaporator fan motor relay. The white one is for the heat sequencer. The one coming out of the transformer is usually red BUT it will be the power so attach it to the terminal labeled R on the thermostat. If there is a RH and a RC, put a jumper in between them. See if the purple and brown ones go to the fan motor, if so, then just cap them off with wire nuts, and that should have your heat working. Check to make sure the green and white wires go to their designated areas (the heat sequencer looks like a stacked set of thermal overload switches and the relay looks like, well, a relay) and neither ground out before flipping on power or you will pop your transformer.

Posted on Jan 28, 2008

Ad

1 Suggested Answer

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

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 wire the humidistat to the transformer


your transformer should have multiple wires on it. 2 of them are for 120 volt side hook up usually black is your hot 120 v wire and white is the common or neutral wire. on the other side of the transformer you have 2 more wires these are your low 24v side colors can range from red,green, blue, yellow ect. the wires for 24v dont matter about polarity or which one you hook up. one is 24v and the other is common.

Feb 08, 2013 | Aprilaire Humidifiers

1 Answer

We have a RUUD AC unit, model number UAMB-042JAZ. ...


Those are the low voltage wires from the thermostat and transformer. Yes he can just match up the colors and splice with wire nuts or something else to hold the tight. If the transformer got shorted out during any of this it may need to be replaced. Hook them up and if the unit runs, then no problem with the transformer.

May 21, 2010 | Heating & Cooling

2 Answers

Won't come on


If you check power between the white and black wire you should read voltage, if you only read voltage to the black wire and ground, then it is a problem with the wiring going to the furnace. If you do have power coming into the unit, check the line connections to the transformer. If there is voltage present in the line side, the the load side should read 24v, if not then it is a simple transformer swap. Hope this helps.

May 15, 2010 | Goodman GMS90703BXA Heater

1 Answer

Ruud UBHC AC System - Provides no Aux Heat


Tried this on my unit today, and observed the same results, but got Aux Heat (with A setting), if the H (blue wire) connected to B terminal, as per instructions for my 6036 Ritetemp. However, in this case, when the set temp is reached, I hear the click, but HVAC still blows aux heat indefinitely.

I also have RUUD UBEA 17J10..., and replaced my old honeywell with 6036, and can't get heat pump working. Both of my units are 14 years old, so I'm thinking to replace them soon.

Jan 06, 2010 | Ruud UBHC Air Conditioner

1 Answer

No cold air circulating,


I don't know how you "tested" the blower, but if it came on by itself this rules out the possibility of it being a capacitor. If nothing is coming on at all, inside or out, test the low voltage system. With everything on (the unit should be cooling), you should see 24V when you probe between the red and yellow or the red and green wires. (yellow is cooling, green is fan, red is hot). If none of these get 24V, the transformer is out. If some do and some don't, it is probably a thermostat problem.

Sep 25, 2009 | Ruud UBHC Air Conditioner

1 Answer

I need to know which wires go into which transformer lead there is a red wire and grey connected together then orange and black together then yellow and black together then black comming from air...


first find out your voltage..240 or 208...then it is 2(two) wires high voltage and ground. Both high voltage should go to transformer one on common lead another to 240 or 208 lead( if you have up to 218 use 208 lead...), transformer ground it self so don't worry about ground. other side of trasformer got 2 wires it will be your 24 volts..normaly it is blue and red( ruud-rheam-goodman red and grey, carrier red and brown)...if you need to know how to "hook it up" low voltage let me [email protected]

Aug 29, 2009 | Heating & Cooling

2 Answers

Blown Transformer heat pump


blown transformers are usually from a low voltage short the first thing i would do is wire a automotive or resetable 3amp fuse in line with the transformer so you dont blow transformer after transformer the wire coming off the transformer that say 24v take that wire a couple of inches down and cut it and install the fuse in series there
24v----------------
24v----------x----------
24v--------{3ampfuse}----------

now you can go through your low voltage wires one by one and test them unhook all the wires to your outdoor condenser at your indoor unit(furnace or airhandler) and try turning it to cool now if you blow the fuse the short is between the tstat and the indoor unit if the fuse is still good leave it on cool and hook up one wire at a time to your outdoor unit starting with R a lot of times your contactor or your defrost board will short out on you also look for pinches in wires wires with cracks in the insulation and wires touching metal this situation can be a real pain sometimes i would recommend calling a hvac company if you start to get stumped
hope this will help you

Jul 26, 2009 | Ruud UBHC Air Conditioner

1 Answer

Will a short/ground in the thermostat wires cause a model(-) HQA to burn up the 24 volt transformer


If the transformer wires are shorted together, this will burn up the transformer. Normally transformers on the LV side (24 volt) are not grounded, but the solenoids that they control could be grounded, and a t-stat wire that is unintentionally grounded could burn up the transformer, but its not likely.

Jul 09, 2009 | Ruud Heating & Cooling

2 Answers

24v wiring for RHEEM heat pump


Brown wire connect to com C on terminal block in your furnance (0VAC from 24VAC transformer)
Yellow turn on compresor (hot wire from 24VAC Transfrormer)
Blue switch Valve from AC to Heat (hot wire from 24VAC Transfrormer)
Purple prevent starting compressor in Heat pump and furnace in same time

Jul 02, 2009 | Ruud UBHC Air Conditioner

1 Answer

Ruud furnace won't light


first lets try the transformer. With your meter check for 24v on the output side. You cant check to ground on this, you have to check your meter with both wires to the transformer. If this is too complicated just try turning on the A/C, if it comes on, the transformer is good. The problem may be with the time delay relay. try by-passing it and then see what happens. since its an '87 when you say circuit board I assume its a board with all the low voltage wires attached to it right? Or does it have resistors, diodes, and relays molded into it?

Nov 04, 2007 | Heating & Cooling

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

Related Topics:

241 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

Paul Carew

Level 3 Expert

3476 Answers

Donni Steen

Level 3 Expert

687 Answers

Marvin
Marvin

Level 3 Expert

85206 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...