Question about Heating & Cooling

1 Answer

AC thermostat does not control AC. AC runs continuously. Have to shut system off to stop AC.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 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.

  • Master
  • 446 Answers

Are you using the old coventional thermostat? using mercury

or was it digital?

chances are the reason it is not stopping because it can not detect the right temp inside your house, if you have set this for example 74F AC would run continouisly until it reaches that right temp, until that time, it would surely not stop,

check for any windows, door that might cause some air leaks inside your house for a start, close all exhaust fan and see if you can see any difference, if not this might be the right time to change for a digital temp control, it not that expensive and easy to install

Posted on Jul 25, 2008

Ad

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 Repairman 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 repair professionals here in the US.
click here to Talk to a Repairman (only for users in the US for now) and get all the help you need.
Goodluck!

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:

2 Answers

2002 4 ton Bryant air conditioner shuts off, fan still runs but not cooling is problem in the controls in the attic or in the AC unit or both?


With a non heat pump it is a simple 24 volt AC control circuit. In the attic there is a relay that is actuated via the fan control wire directly from the thermostat. On the thermostat there is an auto/man switch that controls the fan. Manual the fan runs all the time. Auto fan turns on and off with the outside compressor.

If the system is not calling for cool and the fan continues to run the fan relay is sticking. common problem. Sometimes after running for several days the relay will stop sticking if not, replace relay.

If the system is calling for cool and the compressor stops I would still expect the fan to run until thermostat tells the A/C to off. Some compressor units include a safety switch or high-pressure cut-out switch A blocked internal valve bad control board or external fan in outside unit defective no air flow in outside unit.
High pressure cut out not good,

Suggest turning temp max cool and observe. If acceptable cool and the compressor runs without interruption all is good, except for the blower in the attic. Safely check relay in attic blower circuit.

Hope this helps.

thermostat-heat-cool-fan-on-czwsw2ci0layswcsyy3dj4dr-4-2.jpg

basic-thermostat-wiring-diagram-czwsw2ci0layswcsyy3dj4dr-4-5.jpg

Jun 28, 2017 | Bryant Heating & Cooling

3 Answers

I have new blower motor. it dosen't stop running


Could be a bad blower motor resistor,mounted by the blower.

Sep 28, 2016 | 2002 Dodge Ram Pickup 1500

1 Answer

How to troubleshoot thermostat wiring?


I'm not sure if the thermostat is wired correctly. First, the thermostat is wired directly to the outdoor unit (compressor/condenser unit). It is NOT directly connected to the indoor unit. It connects to a low voltage control panel in the outdoor unit that sends a signal to your indoor fan/evaporator. This wire is called the fan relay switch and physically runs between the low voltage controls of the indoor and outdoor units. If the fan relay is bad it's possible that the unit runs continuously. To prevent destroying your outdoor unit there is a safety feature that prevents the indoor fan from shutting down while the outdoor unit is running. If the indoor fan did shut down while the outdoor unit was running than you would slug your compressor. That is, your compressor normally sees refrigerant gas but is instead seeing refrigerant liquid. That would not be good since this scenario would destroy your compressor. It sounds like a faulty fan relay. The actual contactor portion of the relay is in the outdoor unit.

Aug 22, 2014 | Honeywell Electronic Programmable...

1 Answer

Refrigator does not stop running


Fridge FAN CONTINUALLY STAYS ON OR SHUTS OFF WHEN DOOR IS OPENED:

NORMALLY WHEN THIS HAPPENS U EITHER HAVE A DOOR CONTINUALLY OPEN ISSUE OR A BAD DOOR SEAL LETTING AIR IN AND CAUSING FAN TO OVERWORK ITSELF. ANOTHER CAUSE CAN BE DIRTY COILS AND CONDENSER AND LASTLY NOT TO COMMON IS A SHORT IN THE FAN SYSTEM ITSELF. A MORE PROBABLE CAUSE COULD BE BAD THERMISTORS OR EVEN COLD CONTROL THERMOSTAT ( WHEN THE THERMISTORS OR THERMOSTAT DO NOT GET/GIVE A PROPER READING, THEY CAN CAUSE THE FAN TO CONTINUE TO OPERATE AS THEY FAIL TO RECOGNIZE OR REGULATE THE PROPER TEMPERATURE.


Jun 29, 2014 | Kenmore Refrigerators

1 Answer

Ac unit runs, inside blower shuts off after 2 mins, compressor continues to run, t-stat still calling for cool


My central AC unit decided to stop on the hottest day of the year. It would start and run normally for a few minutes and then the blower would shut off. After checking the breakers, thermostat and overflow shut off (did not have one) I saw something about a blower motor capacitor. This was easy to get to and replace and my last hope before waiting for someone to come fix it. The capacitor cost $4.04 with tax and had my AC working again. Needless to say I was beyond happy. I hope this can help others with a similar problem.

May 20, 2012 | Heating & Cooling

1 Answer

I have a 2005 Pilgram 27 foot 5th wheel. My Duo Therm AC unit makes a ticking sound from the ac unit itself when it's not running. Shutting off the Duo Therm analog thermostat does not stop the ticking...


It's obviously on the 12voltDC circuit of the AC unit. Sounds like thermostat, or a relay in control box is faulty or bad connection. If you remove cover on ceiling assy., you should be able to hear it in the control box. There should be a model number on the ceiling assy., get back to me with that number and I can better pinpoint which relay. Also, try moving all thermostat buttons and temperature controls back and forth quickly to see if it may clean off a dirty circuit in thermostat as well. Make sure your AC hydro breaker is off when working with ceiling assy. just to be safe.

Mar 26, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

The thermostat although programmed to heat to 70 will not shut off and keeps going until ridiculously hot.


Are you confident that it is the thermostat? I would first try would be to disconnect the wire on the R terminal of the thermostat and see if the heating system stops. If it does, then you have confirmed that the thermostat is in fact the issue. Replace it. If it continues to run on, you have a problem with the wiring or control board of the heater.

Feb 24, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

Programmable thermostat intermittent problems...


Some tstats control humidity as well. Temp will over shoot set point in order to reach humidity s

Jun 24, 2017 | Honeywell Programmable Thermostat Heater

1 Answer

Need to know which terminals run what


Had similar problem, continuous fan, turn off power, then won't start up. Replaced thermostat, no change. The main controller board in the furnace went bad. What was weird was that it happened in the summer, while the heat was turned off. One day I noticed that the fan was running. The thermostat was in the off position, and I had to shut off power to the furnace to make it stop. I forgot about it till heating season came along and it wouldn't start up. The preliminary blower would start, the gas would click on, it would light, then quit. After tracing and checking the various safety switches, etc. it became apparrent the main board was bad. I found one on ebay, replaced it, [a simple job, unplug, a few screws, replug] and it's been working fine..good luck, John

Nov 07, 2008 | Honeywell Focus 6300B 5-2 Days...

1 Answer

Carrier XHD183D Through-the-Wall Heater/AC runs constantly


YOU COULD EITHER HAVE A THERMOSTAT PROBLEM OR FAN CONTROL PROBLEM.TURN THE POWER OFF AT THE FURNACE AND TAKE THE THERMOSTAT OFF THE WALL.MAKE SURE YOU MARK THE WIRES SO YOU KNOW HOW TO HOOK IT BACK UP AGAIN.RESTORE POWER TO THE FURNACE.TOUCH THE WIRES THAT WERE HOOKED TO THE R & G TERMINALS ON THE T-STAT TOGETHER AND HOLD THEM THERE.OBSERVE THE OPERATION. WHEN YOU TAKE THEM APART DOES THE BLOWER STOP?TRY IT A FEW TIMES. IF IT CONTINUES TO START AND STOP YOU GOT A BAD T-STAT.JEFF

Dec 13, 2007 | Carrier XHD183D Air Conditioner

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

Related Topics:

162 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

Paul Carew

Level 3 Expert

2840 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 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...