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gracetool 12-10-2011 11:42 PM

furnace problem
guardian furnace quits - gives 3 red flash code - shutoff and restarts w/green then goes to 3 red again. won't start heat cycle.

Doc Holliday 12-11-2011 12:25 AM

you should have a legend on the furnace, on the inside of the furnace service doors of furnace or possibly on the control board, that tells you what the flash code means.

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