Question about Carrier 38CKC048 Air Conditioner

1 Answer

Furnace won't come on after being off several hours, new relay

Have an old Carrier made BDP hvac. When it has been off several hours, it will not come on again until I switch the breakers off, then on. Then it runs fine while cold out, but if we have a warm day and it's off for many hours, it does the same thing. I had the problem years ago and replaced the relay (common 90340 24volt) and that fixed it. So, I replaced the relay, seemed to come on immediately, but when it was off yesterday during a warm day, had to cycle the breakers. Then it comes on and off fine during the cold night until stopped for a while. This is ancient, 1985 model, would like to nurse it along for a while longer, it heats well. Anyone know what to try? I don't think it's the thermostat, but it could be. Its the old mercury type, pretty simple, and it does work after starting up for the first time. But, when I leave town for a couple days, with it turned way down, I find it cold in the house and it did not come on at the low setting during the colder nights after being off in the warm days we often have in north Texas. Help!

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 306 Answers

Lets test the t-stat. Take the cover off the stat locate the terminals R & W take a small piece of wire and holding the wire jump across the two R & W terminals. Does the furnace start up immediately? or does the same problem exist? Sometimes in diagnostics you have to start to eliminate the problems one by one. ken

Posted on Jan 01, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My Carrier Infinity 96 air conditioning is not working. The status code led is yellow and on steady. Any ideas??? Thx!


That light being during cooling means that something is pulling too much current. Check the relay in the outside unit (warning high voltage) and if you have a condensate pump attached to remove water, make sure it is working.
http://www.hvac.amickracing.com/Furnace%20Info/Variable-Speed%202-Stage%20troubleshooting.pdf

Jun 13, 2015 | Carrier Air Conditioners

1 Answer

What could cause carrier fault code 42 besides bad inducer


Could be several causes.
1. Blockage on piping
2. Water in inducer housing slowing down inducer impeller
3. Condensate trap for furnace clogged up.
4. Inducer motor going bad.
5. Leak in vacuum hoses or not connected.
Welcome To the Best HVAC

Oct 09, 2014 | Carrier Comfort 13 Series 1.5 ton 14.5...

1 Answer

Tapping on fan relay starts cycle of furnace. Do I need a new relay?


seems the relay would be the cheaper of the two ideas to try. You should be a ble to check the relay more easily with a small light bulb and see if ti is working

Feb 16, 2012 | Air Conditioners

1 Answer

Carrier HVAC model 58sta090 filter size?


Carrier Furnace Model 58STA090-16120 (58STA09016120 ...

www.repairclinic.com/.../Model-58STA09016120-Carrier-Furnace-Filter...
Carrier Furnace Model 58STA090-16120 (58STA09016120) Filter Parts in stock. One million parts for 125 brands. Guaranteed same-day shipping. Call 7 days ...

Carrier HVAC model 58sta090 filter size? - Fixya

www.fixya.com/.../t11662616-carrier_hvac_model_58sta090_filter_size
Feb 12, 2012 - Carrier HVAC model 58sta090 filter size? - Air Conditioners ... Main house central air? = 3 tons ... I assume the filter goes in at the bottom of the air ...

CARRIER Base 80 Furnaces


Feb 12, 2012 | Air Conditioners

3 Answers

Installed a new Filtrete thermostat on a new Carrier high-efficiency furnace. I followed instructions exactly. It doesn't work. What did I do wrong? Furnace was installed in December. Broom handle...


Hi smargyle,

Welcome to fixya!

I can provide you with diagrams for the old Carrier therm and for the new Filtrete therm. But, I would need to know what the model numbers are for each therm plus how many speeds AC you have.

Please reply back with that information and we will get your AC back in working order.

Thanks,

Handie Andie

Jul 22, 2011 | Air Conditioners

1 Answer

Hi, I have a Carrier Weathermaster XS. I don't


If I am correct, that is a gas furnace, right? I believe it may be between 15 and 20 years. Pro-active with and older gas furnace is never a bad thing. First of all it can become a safety issue, as concerns of heat exchangers cracking and leaking carbon monoxide into the home become increasing. Second, it sure only be 80% efficient, whereas a new condensing furnace today can be up to 95% efficient. That means that you currently only use 80% of the gas you are burning as actual heat transferred into the house via airflow, and the other 20% is literally leaving the house through the flue. So you can increase efficiency dramatically and be safe at the same time by replacing pro-actively

Mar 09, 2010 | Air Conditioners

1 Answer

I have a direct vent hi efficiency furnace. All


Check the condensate pump if it is full of water and does not come on that will shut the unit down. And might need a new pump. high efficiency furnaces condensate to squeeze the last amount of heat out of the unit. Seen this problem before. But not being there is a little chance that, that is the problem. let me know and we can go from there. okay ken

Jan 03, 2010 | Carrier XHB123D X/Y Series Heat/Cool Air...

1 Answer

27 year old Lennox gas furnace no heat was coming out of the vents, so I went to the basement and saw 1. One burner was clogged all along the surface and instead of the flames going up the flue, they were...


Please get a furnace that thing is seriously a death waiting to happeng.that is a scary thing to happen. I personally have seen the end results. In the mean time space heaters are safer.

Mar 14, 2009 | Carrier XHB123D X/Y Series Heat/Cool Air...

1 Answer

BDP furnace + model 585A030080YACR


Sounds like your indoor fan motor is not working, check either the cap or the indoor fan motor it's self.

Jun 26, 2008 | Carrier Air Conditioners

1 Answer

Carrier A/C units


Double check that the new contactor has the same electrical ratings on it. My guess is that the coil should be 24v while the relay should be able to carry the same amperage at 220v.

First shut off the breaker and disconnect switch for the furnace and outdoor condenser and call a licensed HVAC contractor:)

If you are determined to do it yourself, Then read the schematics first. Be aware, if you mis wire the system you may cause more damage than you have now. Not to mention your personal safety is at risk.

I am basing this on the most common style contactor found in my area.

The main relay side should be labeled. (eg. L1,L2-T1, T2). These should match exactly like the old one. L1 and L2 are the incoming power. T1 and T2 are the power leaving the contactor. All the 220v wires should correspond to one of these four terminals either by screwing them down or fitting the spade connectors together.

Usually the 24v wires will plug onto the coil (near the bottom, left and/or right sides of the contactor) silver spade connectors.

(STEP 1.) Leave all Wires Connected to your Old Contactor.
(STEP 2.) Remove the two mounting screws that hold the Old Contactor to the Air Conditioners casing.
(STEP 3.) Now Install the New Contactor to the old contactors existing location using the Same two Screws.
(STEP 4.) Now take Off one wire at a time from your old Contactor and Install each wire one at a time to the proper location on the new Contactor.

Jun 24, 2008 | Carrier 38CKC042 Air Conditioner

Not finding what you are looking for?
Carrier 38CKC048 Air Conditioner Logo

106 people viewed this question

Ask a Question

Usually answered in minutes!

Top Carrier Air Conditioners Experts

Cindy Wells

Level 3 Expert

4758 Answers

yadayada
yadayada

Level 3 Expert

61037 Answers

Lawrence Oravetz

Level 3 Expert

7686 Answers

Are you a Carrier Air Conditioner Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...