Forum Discussion

JBarca's avatar
JBarca
Nomad II
Feb 27, 2021

Atwood 8500 series furnace bench test on high limit switch

Furnace: Atwood Hydroflame 8520-IV DC Installed in late 2003. I am doing a total restore on a wet 16 year old camper. I am at the point of servicing the furnace and have a question concerning tes...
dougrainer's avatar
dougrainer
Nomad
Feb 27, 2021
Dutch_12078 wrote:
Why not just replace it with a new one as long as you're already in there? For the $15 or so they sell for, I wouldn't waste my time on the old one. Save it for a spare...


Bingo. You are wasting a lot of your time on a 16 year furnace testing a Limit switch that usually fails after years of service. Just install a new one. To get it to trip, block off the hot air ductwork holes. It should take less than 10 minutes for the Heat Chamber to reach over 200 degrees. Doug

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,188 PostsLatest Activity: Jan 18, 2025