AS SOON AS YOU PUT POWER TO FURNACE, ALL BLOWERS START RUNNING AND NEVER LIGHTS THE FURNACE AND BLOWERS NEVER SHUT OFF

Asked by Jim Riddle on 10/09/2011 1  Answer

ManualsOnline posted an answer 13 years, 1 month ago

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5 one of your limit switches is tripped. more than likely the high limit. this limit should reset on its own but some time they stick open. if it is a limit that has a reset button on it you may need to contact a service person to find out why that limit tripped. The high limit shoud be in the middle of your furnace. pull it out check ohm reading if open just tap it it should close. This limit usually trips because the heat exchanger got to hot.
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