Question about Whirlpool ACQ122XK Air Conditioner

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Hi there, My compressor unit outside runs constantly. The fan inside will not come on unless the on/off switch on the thermostat is switched on and off several times. I have replaced the thermostat and the problem remains.

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The compressor will keep operating tell reaches the temperature that been set for, also the comp. needs cut off to stop working, so you have the cut off & thermostat that controls the comp. you replaced the thermostat that leave you with the cut off…please make sure that you clean the unit before you re-hang the unit.
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Posted on Sep 29, 2009

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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

1 Answer

Intertherm MGHA-070ABFC-05 will not run/cool


Multiple problems. Eliminate thermostat first. Remove face from wall and turn on breaker. If fan still runs you have a bad board or bad relay. If fan outside is running compressor should be too. These operate on same contactor. Verify you are getting 24 volts to coil side of contactor. If odf stops working and contactor remains pulled in you have a bad motor. If odf motor stops working the compressor will shut off due to overheating.

Jun 07, 2016 | Intertherm Heating & Cooling

1 Answer

My outside fan will not run and the inside unit runs constantly. can't push the reset button on unit outside


Your out door unit fan motor not runs due to pressure not build up at Heat mode. If its cool mode only fan runs with compressor when thermostat calls for it.

Without having technical knowledge, don't press any reset button. Hope it's helpful?

Dec 09, 2010 | Ruud Central System Air Conditioner

1 Answer

My air conditioner won't stop running. The fan won't stop on the upstairs unit unless we remove the thermostat from the wall. The condenser runs constantly. It does cool when the thermostat is plugged...


Does the compressor also run constantly? If it does, the problem with the outside unit may be a stuck contactor. You can remove the cover where the power goes into the outside unit and the contactor should be located near there. If it is stuck, turn off the power to the outside unit and tap the contactor to try to free it, depending on how bad the contacts look, or replace the contactor. As for the indoor fan, you could have a bad fan relay, if that is what your unit has, or a bad fan sequencer, which is what some units use. These components will be located in the air handler. Hope this helps. Let me know what you find if this doesn't help and I can offer more advice based on that.

Sep 08, 2010 | Heating & Cooling

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 running constantly in the house


Check t-stat and make sure fan is set to "Auto", that might be why fan is running all the time, or it could be a fan relay that is stuck closed. It sounds like you A/C is over charged or you have a bad high pressure switch, this was a common problem with this manufacture especially in the heat mode.

Apr 24, 2009 | Ruud Central System Air Conditioner

1 Answer

Fan is still running in house constantly


Check your wall thermostat to make sure the "fan" switch is in the "auto" position. If it is set at the "on" position, the indoor fan WILL run continuously. Not really enough info as to what type of split system you have. Gas? Electric? Heat pump? Oil? Wood? Newspapers? See what I mean? Is it variable speed? Do you have a "special" thermostat for certain operations? Does your system incorperate inverter technology?

Apr 24, 2009 | Ruud Central System Air Conditioner

1 Answer

A/C Problems


SOUNDS LIKE THERMOSTAT IS NOT SET UP CORRECTLY THE HAVE TO BE PROGRAMED TO YOU UNIT

Aug 28, 2008 | Honeywell Electronic Programmable...

2 Answers

Compressor shuts down when warm outside


make sure you provide shade for your unit. It may help keeping it cool.

Aug 27, 2008 | Honeywell Electronic Programmable...

2 Answers

Ruud 11 Seer AC will not come on


ok, do the following test:

take the cover of the thermostat and if you have a voltmeter put one lead on r and the other on y

if you have 24 volts low voltage is o.k.

now jump the r and y together and go outside if compressor turns on and runs wala! bad thermostat

now jump r and g if fan comes on fan relay's good

now check against any wiring diagram to see if any time delay device is installed for compressor

and if the unit has a circuit board, well the part that controls cooling went bad.

but if you have a fan relay installed and the fan goes on its o.k

any other questions e-mail me @ hvac.tech7872pr@gmail.com

Apr 24, 2008 | Heating & Cooling

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