Question about Air Conditioners

1 Answer

The compressor in my central air unit does not kick on. Sometimes it will sometimes it won't. I really notice when it doesn't because of the scorching heat from outside. Basically when the air is off all night, which I don't run at night because it is to cool, but in the morning when the thermostat is set for it to come back on the compressor won't kick on for a couple of hours after if at all. Please help me figure this out. I'm pretty handy a do it yourself projects.

Posted by on

  • Sissy91 Aug 18, 2008

    I think the internal thermal overload might be related to the fan or blower... Well that's working fine.. its just not cooling.The compressor which cools the air is the problem.I could be wrong. But I wanted to make sure you know the blower is working fine just no cold air. Like I said sometimes there is and sometimes there isn't.

×

1 Answer

  • 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 you may be low on charge and going off on internal thermal over load.Just a guess though.

Posted on Aug 18, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

What causes compressor to work fine then shut down and not come back on for an extended amount of time?


Sometimes these AC's need to be removed and given a damm good cleaning with a spray hose, and any filters replaced. Clean the internal fan(s).
This can sometimes fix overharting of the compressor or misleading air temp sensing..

Jul 08, 2015 | Frigidaire FRA296ST2 Air Conditioner

Tip

Replacing a condenser fan in centralized A/C


On of the common problem with centralized A/C unit is a bad condenser fan. I have known people who called an ac technician to fix their ac because of a bad condenser fan and suggested replacing the whole unit! Costing them a lot of money when all it needed was a 50 dollars condenser fan! If the condenser fan do not run or it runs only when you give it a push, it'sbad. You will also notice that it is vey hot. When replacing a condenser fan you may want to replace the starting capacitor too. Replacing a condenser fan is not very hard, just make sure that the power to the ac unit is turned off at the breaker box. Confirm that the wires are not live by using a meter or an ac tester. The fan motor are held with brakets sometimes just screws. Most fan you can buy that has reversible rotation by just reversing the plug. Make sure it is blowing upwards. If not reverse the rotation. So if you notice that the unit is not putting out cold enough air and you went outside and noticed the compressor running but not the fan, turn off the AC right away and do not use it untill the fan is replaced. Running the unit with a defective fan can damage the compressor caused by overheating.

on Jul 10, 2010 | Air Conditioners

1 Answer

My outside Kelvinator central ac unit will not turn on. I hear a faint humming noise coming from it so it appears that it is getting power but won't turn on. My fan in the house will turn on and...


Its possible that the contactor that closes to start the outdoor unit is not pulling in and passing power. You are hearing the coil humming since it is getting control power. Also first check that breaker for outdoor unit is not tripped

Jun 22, 2011 | Air Conditioners

2 Answers

Compressor not kicking in on 'cool'; or ;dry'


Have you checked that the controls are not set to fan only? If you have lets go to the next step. All window A/C have thermal switch.. These thermal switch keeps the compressor from overheating. In the event that the compressor is overloading it would trip then click back on as the compressor cools down. Sometimes those switches go bad but the compressor is ok. They are mounted on the compressor themselves and accesable once the A/C unit cover has been opened.

Jul 07, 2010 | Whirlpool ACQ122XK Air Conditioner

1 Answer

From hours of 12 pm till bout 6 pm my ac doesn: wana kick on but when it starts cooling down my central unit works all nite kickes on and off like it suppose to could it be the compressor or compasitor


Do you have a programable thermostat? It probably is not the capacitor, maybe the compressor overload
which cuts the unit off if it gets to hot.

Have you cleaned the condensor?

Jun 30, 2010 | Air Conditioners

1 Answer

Central air conditioning blowing out hot, not


Can you tell if your outside unit is running (the fan and compressor)? Sometimes it is hard to hear the compressor for the fan. If they are running then you possibly have a low refrigerant charge and need to have some added. Refrigerant pressures and temps can be checked to verify this. If they are not running then you need to find out why. If both the fan and compressor are not running then first make sure all the breakers and disconnects are closed. Then a bad contactor or capacitor could be the problem. If its just the compressor that's not running then it could still be the capacitor or maybe the compressor.

Apr 29, 2010 | Air Conditioners

1 Answer

Is there a system mismatch with an American Standard 13 seer 3 ton compressor and a Nordyne 3.5 ton air handler? Noise at TRV when heating.


This must be a heat pump? Sometimes the unit can be more efficient with this combonation. What you are probably hearing is the reverse direction of the
refrigerant going back through the liquid line.

If in cooling sometimes you can hear a gurgling sound going through the expansion valve, sometimes
this is a sign of low refrigerant or the system is fine..

If you recently had the outdoor unit replaced and noise is an issue, check to see if the unit has isolation pads installed underneath the unit whether
it be on concrete slab or on brackets mounted to
house. Sometimes the new units come with compressor that has a jacket installed over it

Feb 14, 2010 | Ruud Central System Air Conditioner

1 Answer

Sometimes compressor does not kick on


It sounds like the coolant charge is marginal. There are sensors that can monitor the pressure levels and can disable the compressor to prevent damage to it. You need a tech to check the system before you lose it completely. Figure on $100-120 cost for check and recharge if needed.

Aug 06, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

I recently had a new outdoor unit installed on my central heat and air conditioning sytem. I have had the installer out 3 times and the system still does not operate correctly. Sometimes when it cycles...


It sounds like the compressor needs starting components installed on it. All a/c units have a run capacitor for the compressor and another one for the condenser fan motor. These motors use these capacitors all the time when the motor is running. However, in some cases, this capacitor isn't enough to get the compressor spinning initially. Starting components consist of two parts, a start capacitor and a potential relay. The starting components are wired in in series with the compressor run capacitor. When the compressor turns on, the start capacitor gives the compressor an extra "kick in the pants" to get it going, then as soon as the compressor is spinning, the potential relay disconnects the start capacitor from the circuit for the duration of the run time and resets when the compressor turns off. Most likely, your indoor unit has a thermal expansion valve (commonly known in the trade as a TXV). This valve maintains a somewhat substantial differential between the high side and low side of the compressor after the system turns off which can be difficult for the compressor to overcome without help. Right now the compressor is trying to come on, can't overcome the pressure, and is tripping it's internal overload to protect itself. Eventually, as the overload repeatedly trips and resets over and over, the compressor will finally get around to a position where it will start once in a while. I am not a gambling man and I would bet you money that this will solve your problem. If you would be so kind as to rate my solution "Fix-Ya".

Jul 03, 2008 | Air Conditioners

Not finding what you are looking for?
Air Conditioners Logo

Related Topics:

89 people viewed this question

Ask a Question

Usually answered in minutes!

Top Air Conditioners Experts

Dan Webster
Dan Webster

Level 3 Expert

8147 Answers

Bill Long

Level 3 Expert

577 Answers

Tim Whalen

Level 3 Expert

3056 Answers

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

Answer questions

Manuals & User Guides

Loading...