Question about Mitsubishi Mr. Slim MXZ30TN Air Conditioner

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Mr slim 12,000 btu 110 volt

Electric service to outside unit is proper.on start up unit works perfect,after a few hours it starts to draw 40 amps from its normal 10 amps.it will go up and down every 2 seconds then throw the 20 amp breaker?

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Sounds to me like yo have dirty condenser coils (outside unit) After this runs and gets hot it loads the compressor because it can not release heat out of the condenser coil it also may have a restriction somewhere on the high side that could cause this maybe in a txv or in a line filter.

Hope this helps Ya
please rate me

Posted on Jul 20, 2008

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Circuit breaker


ngfam1
Happy to assist,

HOW MANY BTU IS THE AIR CONDITIONER?
And is it 110 or 220 line!

If it is using 110 or 115 volts like normal house current and it throws circuit breakers in your electric box,then you need to run a dedicated line just for the Air Conditioner!
Usually this happens to 110 -115 volt air-conditioners that are more than 12,000 BTU and do not have a dedicated electric line in the wall only for the air conditioner!

New air conditioners have a circuit breaker built into the units plug!
And I have seen some that throw that breaker to off frequently even if it's only an electric surge! Which it should not do!
if its the case and it's new, take it back to the store and ask for a different model, size, or brand!
Fedders had an 18,000 BTU/ 110-115 volt unit that did this with every single unit last year! I stopped selling that unit only!!

Ngfam1
PLEASE GIVE ME A GOOD RATING HERE FIXYA.COM BEFORE YOU SIGN OFF!
you can just use it as is as long as it survives!

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