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Furnace mystery [message #215746] Fri, 26 July 2013 10:09 Go to previous message
lance is currently offline  lance   United States
Messages: 190
Registered: December 2004
Location: Vancouver, WA
Karma:
Senior Member
Guys, I recently had issues with my furnace that turned out to be low voltage on an old house battery. I replaced both house and engine batteries and all was well. The furnace ran fine once it got more than 10 volts. That was two days ago. This morning, no furnace. No fan, nothing. The thermostat clicks as it should when it is moved up but the furnace does not start. The fuses are fine. There is power out on every lug on the fuse panel but no voltage at the furnace on the red wire. The furnace is brand new, a month old. How can I loose voltage between the fuse panel and the furnace? I have not been fiddling with other circuits. The refrigerator seems to be on the same circuit and it is working.

I have a 1975 service manual and find it almost useless. The fuses are in a different order, the wire colors are all different and other differences that make me just want to throw it away. Anyone have a link to a 1974 12v schematic? Anyone have any other ideas?


1974 Palm Beach
 
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