The indicator light on the control panel blinks four times. The cover panel says that 4 blinks is either limit switch open or auxiliary switch open. We replaced this control board in October 07. Do we need to replace the board again? Is it possible that the board is wired incorrectly? Does someone have or know where I can get a wiring diagram for the control board? Sorry for all the questions but we are frying like eggs.

Thanks,
Kevin

Frying like eggs tell me the a/c not working,or the furnace won`t stop working, is ithe air coming on?running at all? Not sure what your concern is, do you need heat,or aircondition?

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Originally Posted by wmproop

frying like eggs tell me the a/c not working,or the furnace won`t stop working,,is ithe air coming on?running at all? not sure what your concern is,,do you need heat,or aircondition?

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Sorry I was a little vague. The A/C is not working. We had the building manager check the A/C unit on the roof he somehow bypassed the switches and he said that it is functioning and the compressor is coming on. My brother replaced the control card in November but he said he may have hooked the wiring up wrong. Should we buy another card? And is there a wiring diagram to show us the corredt way to wire it up? Thanks again

Wiring diagram should be on the service door on the outside unit.

You may have to call a qualified HVAC service person