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I have a mitsubishi electric air system. It just stopped working for no reason. All units are not working. The remote work fine yet when you press the button nothing happens. This is all of the house. I tried to fix the circuit breaker, nothing. I tried the outside unit to turn off and on again, also nothing. Your assistance is greatly appreciated. Lisa Ablon

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Hi Lisa,

First change the batteries in the remote. Is this a central system or separate units. It sounds like central which would have sequencers and fan relay that would keep it from coming on. mitsubishi uses pc boards for everything and they fail often. Unless you about elec. circuits then you will need an a/c contractor to troubleshoot the system. But first try the batteries if you haven't already.

Posted on Sep 27, 2008

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