| Furnace ground location [message #306414] |
Fri, 02 September 2016 22:55  |
Tilerpep
Messages: 404
Registered: June 2013
Location: Raleigh, NC
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Where is my furnace grounded to my house frame? The four wire connection heads back under/behind the unit towards fuse panel and closet out of sight.
My propane furnace runs fine when engine or genny are running, or plugged into shore power. Battery power alone will not heat. Thermostat demands, it starts fan, but no heat ever builds up, yet fan keeps running. I have taken it all apart a couple times over the years...when I first bought it to verify no wasp nest blockage or firebox degradation and resultant carbon monoxide threat. My current theory is sail switch isn't getting enough fan speed to allow it to light with a weak ground that external sources provide enough voltage to overcome, and battery alone does not.
I think it is a Suburban NT30 or NT40, but the ground I am guessing is original as the four wire is spliced near furnace from old to new.
1975 Glenbrook 26 with rear bed and wet side bath. Kitchen is right in front of you as you come in the door. Furnace is below the sink, thermostat is on driver side rear facing wall in bed space.
My main question stands for ground location, but various troubleshooting, alternatives and general goofy comments ("use more blankets" comes to mind) are welcome.
1975 Glenbrook, 1978 Royale rear bath
Raleigh, NC
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