nordyne vent safety switch

Questions about repairs and parts for Nordyne furnaces, air conditioners and heat pumps for manufactured homes including Intertherm, Mac and Miller brands. Click here for Nordyne parts.

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djburton1585
Posts: 1
Joined: Thu Feb 19, 2009 9:17 pm

i have a nordyne m3rl 90+ down flow condensing furnace. the vent safety switch trips 1-2 times a day for about a week now. i have checked the vent pipe and condensate lines for blockage and there is none.the vent motor seems to be working properly. what else could be causing this switch to trip
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Rod
Posts: 102
Joined: Sat Feb 07, 2009 1:43 pm
Location: Saratoga New York

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