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Furnace is turning on but cutting off then fan is is turning on then unit cuts off. Furnance was originally installed at below sea level and now is installed at above 4000 feet above sea level. Panel states to adjust to above sea level but does not tell how to adjust. Furnace is a Coleman Evcon model # dgat056bde serial #980854038

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Hi my name is mark, i went to coleman website. please go to website and check safty notice. http://www.colemanac.com/dealers/index.asp i hope this helps.

Posted on Mar 14, 2009

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I have the following home thermostat Honeywell-YRTH230B1009-Thermostat My husband changed the filter last night and the heat has not been on since. The gas in on and the pilot is lit but still no heat. We...


If your furnace has a filter or fan compartment door, be sure it closed tightly and that the filter is installed correctly - there could be an interlock switch that is preventing the thermostat from operating. Also, if you haven't already turned off the power to the furnace, do that, wait a minute and then turn it back on.

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1 Answer

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1 Answer

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1 Answer

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1 Answer

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1 Answer

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1 Answer

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2 Answers

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