Question about Carrier Heating & Cooling

2 Answers

Carrier home ac system

The compressor and Evap motor wil not shut off unless breaker is switched off. Is there a relay that controls this?

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

My carrier outside package unit the evaporator fan will not shut down

Posted on Jun 15, 2013

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 182 Answers

Sounds like your contactor is stuck closed.This is the part that high voltage connects to and lets power through to the compressor and condenser fan motor when you get a call for cooling.If you go to pull it out,kill the power outside AND at the furnace.

Posted on Aug 12, 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

My Cadillac 08 CTS will not blow cold air the relay checked out but when I jumped the relay the compressor kicked in and it blew cold air when I put the relay back in I had nothing tried a horn relay...


there are 3 switches that control the operation of the ac compressor . There is a high pressure switch that will not allow operation if the head pressure goes too high ( excessive gas-blocked system-tx valve condenser fan not working )There is a low pressure switch that stops the compressor when the gas has leaked out and is insufficient A thermostat that will not register and so will not switch on the compressor and finally ac compressors will not work unless both the ac switch and the blower are switched on. Have the system checked out by an accredited ac specialists.;l

May 02, 2014 | Cars & Trucks

1 Answer

Carrier 48NMX042 IFM wont stop, condenser fan motor and compressor wont run


Ok first thing is it sounds like a wiring problem. So first step is to make sure the thermostat is properly connected. Which... the main thing here is there needs to be 24v dc power coming from your control board (transformer) going to the thermostat..generally that is the red wire. All the thermostat does is connect that "red" wire (power) to one of the other wires to complete a circuit. So make sure you have 24 volts... (generally about .5amps) . if you have power than switch thermostat to fan only should energize the green wire only. then switch to ac and move temp low enough that the ac should turn on and that should energize the yellow wire. for sure one of those wires is incorrect now or the fan wouldn't be on OR THE THERMOSTAT IS NOT CONNECTING THEM AND IT IS BAD. Now about the compressor and fan.... those same wires run out to the compressor unit... ok the yellow for ac.. greeen does not go to compressor unit that is for fan only (vent).. red carries the same 24 volts... one difference here is that most carrier units only have the one transformer....so you run the red wire is the +pos 24 volt..and then a "common " wire is needed which is the Ground or neg... that wire on a carrier is brown usually but could be different depending installer. The orange wire goes to the pump reversing valve it is always energized when on ac mode...when heater is on in the winter it is heat pump and is not energized so just connect the orange and yellow together... tell me more specifics if this doesn't help and i'm sure I can help you... thanks Chuck

Jun 22, 2012 | Carrier Heating & Cooling

2 Answers

AC Condenser motor will stop at 1pm but inside unit is still running but no AC. If I turn the AC unit breaker unit off and then an hour later turn it back on. The unit runs fine all day until 1pm. Had a...


Hi, the tech should have been able to figure the stat out with out a manual to see why the condenser is shutting off at 1:00 P.M. This is unusual for this to happen, unless it was winter and this is a heat-pump going into defrost, but just the fan would shut down. Does this unit have a box on it that was installed by your electric company that shuts the unit off during high peak conditions in the summer? This would cause it to shut down at the same time everyday. If not, it would have to be something in the thermostat that is set for it to shut off at that time. It still does not make since, as it would shut both the indoor and outdoor unit off, not just the condenser. Are you saying that just the condenser fan motor is shutting off, but the compressor continues to run until it shuts off on high head pressure when the fan stops, or does the complete outdoor unit shut down fan, compressor and all at that time??. It sounds to me like this outdoor unit has a time delay relay that has a fault in it may be shutting it off at this time daily? Please let me know if its just the condenser fan motor that shuts off, or if the complete unit is shutting off all together, this will help .
Sincerely,
Shastalaker7
A/C, Heating,

Sep 08, 2010 | Carrier 38CKC060 Air Conditioner

1 Answer

Ac unit wont start


Sounds like a classic case of a burnt/pitted compressor contactor. The contacts can get pitted and sometimes burnt. This can cause them to stick and the unit will not shut off unless you shut off the circuit breaker. When you shut off the circuit breaker, the contacts would have cooled down which could have led to the problem you are now experiencing......will not come on. Open up the electrical box. Look near the bottom for a brown or black part with the wires from your circuit breaker wired directly to it. This is your contactor. In the center is the piece that moves up and down to allow the electricity to go to your compressor and fan motor when there is a call for cooling. Check to see if it looks burnt or otherwise damaged.

Apr 04, 2010 | Carrier 38CKC048 Air Conditioner

2 Answers

AC wont kick on....


The first thing to check is your breaker box. There should be one double breaker for the air handler unit, that's the inside unit, and one double breaker for the compressor, that's the outside unit. Check both breakers. If you're not sure if they've be thrown, click them toward the outside of the breaker box (off position) and then click them toward the inside of the breaker box (on position). If the breakers are on and you still are not getting any A/C take a look at your compressor, (outside unit). If the fan is running at least you're getting power. However, your compressor down inside the unit may not be getting power or it may need to be replaced. The compressor has a start-up cap. If this cap goes bad or the wires from this cap fry or corrode away, this will also keep the compressor from starting but the fan will still run. If the fan is not running it could be caused by a faulty relay inside the compressor cabinet. This relay is supposed to open and close based on a low voltage signal from the thermostat. I believe it's roughly 24 volts. This relay switches on and off the 240 volts for the compressor and the compressor fan. Often this relay goes bad or the wires leading up to it fry. If you?re going to work on the unit yourself make sure all power is shut off. There should be a shutoff switch on the outside wall near the compressor. I?d also shut the breakers off.

Jun 12, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Fan will not shut off, but compressor does


hi! there, continous fan motor when unit was shutt off,since supply source was already cut off specially on fan condenser motor,the supply of your motor was came from relay mounted on your circuit board control panel,there a holding coil to hold the connection between your fan and ac source,shut off breaker for ac unit first before diagnosing ac unit, try to check this out the relay is still activated giving ac source when shut off,the contactor on relay holding your ac supply was shorted,try to check the connection the circuit activating condenser fan relay,eliminate the short circuit,using multi tester test rod,use manual diagram for circuit control board to lessen complicated diagnosing,focus on fan relay ac source then isolate checking the short circuit replace defective relay,contact point of relay are not repairable.take necessary precaution on checking to avoid shock,this a hard task i would suggest that certified ac technician w/ full knowledge of instrumentation should do this.thank's for selecting fixya and have a nice day.

Mar 30, 2009 | Intertherm P3RA-036K Air Conditioner

1 Answer

1999 FORD TAURUS EVAP SERVICE PORT


The AC charge port is the on low pressure AC line (large line from compressor) near the firewall. Take care not to overcharge, there are other causes of no cooling like a stuck AC compressor cycling switch or a air temp control blend door motor malfunction, what is the issue u have? does the AC compressor run?

Mar 11, 2009 | 1997 Ford Taurus

3 Answers

Dometic ac in RV


Do you have a wall mount thermostat? Thats what I would look towards first since its easy to get to. Don't let your compressor run with out the fan you can burn it up. I would just use the breaker as an on off switch intill you can get it looked at.

Jul 25, 2008 | Dometic Rooftop RV Air Conditioner

4 Answers

Carrier Air Conditioning


Have the tech come back. the problem did not exsist before he pulled the board. He either left his jumper wire connected by misteak or he shorted the wires to get the fan come on so he could check the operation. Either way he created this mess and is responsible. Most service techs would return and fix his problem just out of pride in his work. If this guy will not return then contact the BBB and the licesing board for the state you live in they have an investigative unit just for guys like this. good luck

May 29, 2008 | Carrier 38BRC048 Air Conditioner

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

Related Topics:

119 people viewed this question

Ask a Question

Usually answered in minutes!

Top Carrier Heating & Cooling Experts

Dan Webster
Dan Webster

Level 3 Expert

8205 Answers

Donni Steen

Level 3 Expert

659 Answers

Bill Long

Level 3 Expert

587 Answers

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

Answer questions

Manuals & User Guides

Loading...