Having problems with your Air Conditioners ?

Outdoor unit does not Run

\015 The outdoor unit has proper line voltage, I have it in the cooling mode during test and have control voltage for R,Y,O. But still does not run. No signal going to contactor is leaving board. Now the LED light on the board flashes 3 times and stops for about 3 seconds and the flashes 3 times again. I checked the low and high pressure leads and they show closed through continuity test. My idea is the board has a faulty relay and needs to be replaced. Just want a second opinion before I do so. Thanks\015\012Todd\015

Answers :

If you manually push in the contactor does the compressor start? If so, then it probably is the defrost board. If not, then do an ohms check on the compressor to make sure it hasn't failed.

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