Furnace Cycles Multiple Times - HVAC - Page 2 - DIY Chatroom Home Improvement Forum

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Old 12-30-2012, 02:13 PM   #16
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From one home owner to another, listen to the pros and find a way to get that 20 year old unit replaced.


digitalplumber is just a name for use here, I am not a plumber!
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Old 12-30-2012, 03:05 PM   #17
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Post a picture of the schematic on the door, or the manufacturer plate from that unit.
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Old 12-30-2012, 04:23 PM   #18
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JFYI the Hi Limit is part of the furnace control system and has a sensor mounted near the heat exchanger on the front of the unit...looks like small disc....If you have Air Conditioning there is a coil mounted in the duct work above or just downstream from the furnace..It could be plugged up thereby causing high heat rise due to low flow resulting in the hi/low limit to shut the furnace off..the coil should be checked and cleaned if required...


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