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Old 05-17-2009, 08:34 AM   #1
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tru air on 30 amp. question.

Shouldnt my 2nd compressor kick in on30 amp?
I have never seen more than 17-19 amp., nor heard the 2nd compressor kick in while using the AC.
I have the refer. on elect., TV in use, but all else off.
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Old 05-17-2009, 09:20 AM   #2
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Yes both will go on. I spent july and aug in arizona 110 plus! on 30 amps. Don 06 Journey 36
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Old 05-17-2009, 10:07 AM   #3
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There is also a separate breaker forthe 2nd compressor. Make sure it is not tripped. If that's not the problem I would suggest turning everything electric off except for the A/C then move the t'stat to a set temp about 10* less than room temp. Watch the amp meter for a few minutes (like at least 2) for the 2nd compressor to start.
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Old 05-17-2009, 10:07 AM   #4
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Yep, should run fine on 30A. Also, the load shedder lights should show you if it was shed. I'm sure you're probably aware of this, but the set point must be at least 2* below the ambient temp before #2 will start.

I've seen situations where the ambient temp warms up to 1* above the set point, #1 starts and just maintains that temp. It doesn't have enough cooling power to cool down to the set point, but is strong enough to prevent ambient from going 2* above set point. So, in that situation #2 never gets called and #1 runs forever. A few times I have bumped the stat down a degree or 2 to get #2 to start and then move it back up to the temp I want...
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Old 05-17-2009, 12:42 PM   #5
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Try putting the refrig on LP. Works for me.
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Old 05-17-2009, 01:28 PM   #6
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The ac just came on at set point 77. outside 98
Breakers are ok.
turned refer to lp and ran temp setting to 65.
Still no 2nd compressor
Whilr unning the geenny about a month ago I could feel and hear the 2nd compressor kick in. Guess it likes 50 amps.
leaving AZ for yellowstone in am though and it cold still there so wont need it ffor awhile.
Guess I need to get it checked out. Thanks
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Old 05-17-2009, 03:28 PM   #7
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I had the same problem with mine last year. Try pushing the black slide switch, on the thermostat, hard to the left. Mine would snap a little and the #2 compressor would come on. It seems to be a common thermostat problem. I replaced mine with a new one and all is well. Good Luck.
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Old 05-17-2009, 04:11 PM   #8
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Bellsharbor
Bingo-I pressed the lever hard and now running at 27 amps. with the refer and tv on.
Chilling down nice.
What a great forum this is. Thanks
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Old 05-17-2009, 07:17 PM   #9
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L I B I learned something on this thread too. Thanks
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Old 05-20-2009, 05:30 PM   #10
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Yah, that slide switch on the Coleman thermostat is a piece of junk. My second stage was erractic when it would come on and after trouble shooting the problem I discovered I was not giving the slide switch that extra "push" to get it all the way to the left. I know several folks replaced the thermostat, but I was not willing to pay the big bucks. So I installed an LED on the thermostat to indicate when the 2nd stage is called for. If the LED doesn't come on, I would check to ensure the switch was all the way to the left. Works every time. A 12VDC LED was purchased from Radio Shack and a 1/4 inch hole was drilled in the cover to mount the LED. The LED was connected to the yellow wire (positive) which supplies 12VDC to the cooling unit when the second stage is called for. Now a simple glance confirms when the 2nd stage should be operating.
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