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Ruud achiever 90 plus won`t start at times

System is on calling for heat but furnace won`t come on.When it does eventually come on it cuts out before the programmed thermostat temps. When this happens 1 of the 2 green furnace lights blinks once repeatedly.This seems to occur when it is really cold outside. At other times the furnace works fine.

Any suggestions.

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Sounds like you have a heat pump heat pumps dont work below 30* temps you should have some type of backup heat

Posted on Feb 05, 2009

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