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nick52
Nov 3, 2009, 11:20 AM
I shut off my ac unit a mouth ago. Got up Sunday morning and the fan on the out side unit was running and will not shut off . Every thing is off heat and air. I shut off out side power to unit to get it to shut off. It is a Trane EX1000 Heat Pump. There is a red LED light blinking on the circuit board.
hvac1000
Nov 3, 2009, 02:09 PM
Check to see if the contactor is stuck closed in the outside unit.
nick52
Nov 3, 2009, 03:39 PM
Every thing is ran through a printed circuit board. Have one coming tomorrow . Hope that works Thanks
KC13
Nov 3, 2009, 09:36 PM
Was the fan running at full speed? Strange that it just started up of it's own will...power wiring on Trane units is a little different than most. I have seen more than a few cases of a shunted compressor causing the fan to run slowly during off-cycles. Once you unpack and install that board, you've bought it for good.