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Old 07-14-2015, 10:23 PM   #11
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on 30amp the fan keeps running but the compressor cycles. i don't know the make of the t-stat but i'll check this weekend,

i also checked the manual and could not find any info on the t-stat.

one thing that does happen is it don't cycle till it cools down, so i think it might be temp related
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Old 07-14-2015, 10:31 PM   #12
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Voltage dropping below required amount you might want to check into putting a voltage protector in line. Had problems at one of the campgrounds we go to every year in FL with voltage drop using 30 amp service when we moved to 50 amp it stopped.
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Old 07-14-2015, 10:37 PM   #13
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now i'm getting a little nervous of even running the AC the 30amp. is there any damage that can be done doing this?

thanks
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Old 07-14-2015, 10:44 PM   #14
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Could be coils freezing up, when this happens the compressor will overheat and go out on overload, then thaw out and start all over again. One thing you might try is do not run it on high and see if that cures the problem.
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Old 07-15-2015, 12:17 AM   #15
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After the noon restart it didn't start short cycling again for nearly 6-hours. That was the hottest part of the day and the A/C wasn't near the temp set on the thermostat. So it was not because it was near the set temp.

We changed the fan setting to LO and it hasn't short cycled again.

A Google search brought lots of ideas of what hs worked for others. Most promising is a set screw in the circuit board that controls the HI/LO cycle intervals.

For tonight we're happy with the fan on LO all night.
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Old 07-15-2015, 01:54 AM   #16
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After 5 or so hours of use A/C unit "short cycles" repeatedly

[deleted]. I posted a theory and then read the manual. Got that backwards...
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Old 07-15-2015, 12:15 PM   #17
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Quote:
Originally Posted by steverkemp View Post
[deleted]. I posted a theory and then read the manual. Got that backwards...
I read your theory and it sort of makes sense. That would explain the 5 hour delay between a restart and the short cycles. But, it didn't explan why it never short cycles on LO or HI fan settings.

It does seem to have to do with the Auto setting and perhaps switching fan speeds. I'm not sure but I think perhaps when it restarted after a short cycle that the fan was at a different speed.

We've had the fan setting on LO for the past 20 hours without any short cycles. Of course, the fan hasn't stopped blowing once in all this time either.
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Old 07-15-2015, 12:27 PM   #18
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It sounds like your air conditioner is working the way it is suppose to. In lo or hi the fan will never kick off. In auto it will start and stop, going from lo to high automatically. At night mine will shut off completely when it's able to keep the temperature in auto.
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Old 07-15-2015, 12:37 PM   #19
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It sounds like your air conditioner is working the way it is suppose to.
I seriously doubt the A/C is designed to turn off and on once per minute non-stop for hours on end. Which is what it is doing on the "AU" setting.

If it did that once to change fan speed I'd agree with you. But not when it does it continuously in such rapid succession.
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Old 07-15-2015, 01:06 PM   #20
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After 5 Or So Hours Of Use A/C Unit "short Cycles" Repeatedly

I would also check the cycle setting on the thermostat. You may need to change from 1 degree to 2 degrees and see if that helps. Our AC used to click on and off when I had set to 1 degree. Changed to 2 degrees and problem went away.
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