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Compressor run for about 30 seconds and shuts off for three minutes and comes back on and does the same .

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Hi If the compressor doesn't run, it is likely that the defrost timer is malfunctioning. This part is located near the compressor. To test the defrost timer:
Step 1: 
Unplug the refrigerator.

Step 2: 
Disconnect the wires from the timer and timer motor. Remove the timer from its brackets by backing out two retaining screws.

Step 3: 
Test the defrost timer with a VOM set to the RX1 scale. Clip one probe of the VOM to each defrost timer -- not motor -- wire, and turn the timer control screw shaft until it clicks. If the defrost timer is functioning, the meter will read zero. If the needle jumps, the defrost timer is faulty. Replace it with a new one of the same type.

Step 4: 
Connect the new defrost timer the same way the old one was connected.

To check the defrost timer motor, clip one probe of the VOM to each motor wire, setting the scale to RX100. If the meter reads between about 500 and 3,000 ohms, the motor is functioning properly. If the meter reads higher than 3,000 ohms, the timer motor is faulty. Replace it with a new one of the same type. Connect the new motor the same way the old one was connected.

Posted on Sep 13, 2008

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LRA2575T2 compressor runs for about out three minutes then cuts off after about three more minutes i can cycle the fan econ cool switch it will cool for three more minute any ideas


Possible blockage causing compressor to shut off, or compressor on it's way out. Check the fan is running full speed when the compressor starts

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Refrigerator wont run. Clicking noise coming from main board preceded by a short humming noise every several seconds. Unplug for 30 minutes then plug back in and compressor starts up after several clicks...


Hello,
That condenser fan motor needs to be replaced. You and doing the right thing as far as using a seperate fan to keep compressor cool,buy replacing the fan the compressor will run cooler and click off by being too hot as you have heard/seen.

Find your model number and call your local appliance parts store and see if they have a CONDERSER FAN MOTOR in stock

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Freezer runs for 2 seconds then stops, and runs this cycle.


Good day,
The shut off is due to the protective overload mounted on the side of the compressor to shut it down, if it can't start.
On the side of the compressor is a cover box that contains the overload device, a start relay, and on some models, a start/run capacitor.
These items can to a degree tested with an ohm meter, but it is wiser to take them to an appliance parts house for testing.
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OUT SIDE UNIT SHUT DOWN IN HEAT MODE, WHEN YOU FIRST TURN IT ON IT RUNNS FOR ABOUT 30 SECONDS THEN BOTH THE COMPRESSOR AND FAN SHUT OFF FOR APROX 3 MINUTES {LARGE LINE STARTS TO GET WARM} AFTER 3 MINUTES...


Hi, You have a heat-pump, this I do no. The reason it is shutting down from how you have explained it to me, is the compressor is shutting down due to high pressure and it is going off on the internal overload. When the compressor cools down, it starts back up and runs again. As for the large line getting warm, this is normal for a heat-pump as in the summer this line will be cold. The reversing valve changes over the flow of freon and the flow goes in the other direction. Back to you're problem. The service tech is bleeding off freon because he is apparently showing with his gauges it is over charged? This will cause it to draw to many amps and shut off. Has this compressor been changed out recently? Or maybe freon added due to a leak? He is doing it because he is thinking it is over charged. It may be some if it runs for a few hours after it is bled off. Did you notice if he clamped his meter around a compressor wire to check the running load amps? If so, that's what he is doing. I would say this unit had work done on it recently or correct me if I am wrong. The condenser fan motor should not shut off with the compressor, it should run all the time even if compressor shuts off on internal overload, believe me!! The fan is wired separate from compressor. The only time this fan shuts off when heat is on, is when it goes into defrost, and compressor keeps running. For the compressor to run for only 30 seconds and shut off, and then back on in 3 min, on for 5 seconds and off again, sounds to me this unit is short cycling due to being under charged. It is strange it runs after he bleeds freon off for a 1/2 a day. As far as the fan shutting down to, and I would like you to get back to me, if the compressor was changed at some point, the fan wiring was connected to the contactor load side, so it shuts down when compressor shuts down. One fan lead is on the wrong terminal of the contactor. If this is the original compressor, this could have happened at the factory, I have seen this before. The tech should have seen this!! Going on and off this fast, would not cause the compressor to get hot enough to kick off and cool fast enough to come back on that fast! Sounds like low pressure. I don't like to knock other techs work, but this unit is not being checked properly. Without me being there to install my gauges and amprobe, all I can do is tell you he is wrong with his solution, way off. Heat-Pumps are much more tempermental then a split a/c only.What to do is call them back out and request a different service tech, or the service manager. This will be no charge to you! You should be reimbursed for the last call. E.P.A. allows us to only loose minimus amounts of freon installing our gauges also. It is forbidden to bleed it into the air. He could be fined $25,000 the 1st time!! It also sounds as though you have a problem in the defrost board that would cause this. Please call them back out and don't feel bad about it. This is you're right! Tell them about the fan also as if it is going off on high pressure which I think not, the fan would stay on. I know this is long but I want you to understand what is going on. I do this for a living and know whats up! I am a Licensed contractor in this field. Please keep me posted. I will be waiting to hear back.
Sincerely,
Shastalaker7

Dec 21, 2009 | Heating & Cooling

2 Answers

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I have a Craftsman 2hp/12 gallon Air compressor that does basicly the same thing, will start, run for about 3 seconds and stop. I replaced the pressure switch but still have the problem. Any suggestions?

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