Question about Ruud UAMB Air Conditioner

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Ruud Heat Pump

My heat pump, in the air conditioning mode, has the internal fan running, but the outside unit does not come on, When checking the circuit board in the outside unit, it shows LED 2 flashing and LED 1 off. What is this LED indication, and does this indicate the problem with the outside unit? Model No. UPNE - 048JAZ

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  • guthmann Aug 10, 2008

    I had checked both the 120 volt and 240 volt with a VOM, and checked breakers and fuses before I posted the problem. The voltages were good and the fuses and breakers were good. I have a partial maintenance document for the Ruud, however, chart for LEDs 1 & 2 lighting did not include a flashing LED 2 and LED 1 off.

  • joe m
    joe m Jan 04, 2009

    i have the same issue, if i press the 240v switch it comes right on, but only if i manually press the high voltage switch in. where is this reset button everyone speaks about?

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Check to see if there's low voltage reaching the contactor's coil. If there is. and it doesn't close (pull in), then it's defective and should be replaced. Cut the power and check ohms to be certain.

Posted on Aug 30, 2013

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This may indicate you have low voltage but no high voltage.check fuses and breakers.

Posted on Aug 09, 2008

  • michelle
    michelle May 26, 2015

    could it be the contacts? because there is no fuse. it is a 2006 achiever series.

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1 Answer

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It will take some detective work to figure out exactly which is causing your problems...

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There is always an outside chance that if you touch the unit while standing on wet ground, you may get shocked. I firmly believe that something is allowing power to the fan in a feedback condition so don't let this go as it may cause damage to other parts.

Good Luck and let me know how you make out on this.

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1 Answer

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Post back and let me know what you find.

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