Furnace Fuse Blows When Thermostat Turns On

[badams67]

I have similar issue but every time I try to start the furnace the fuse blows. This RV was really abused before I bought it. Hot water tank works so I know I have the propane lines connected fine. I had to gut the floors and disconnected power across the floors, removed the water tank and lines from the floors. Now I have the floors and electrical back in and power is all tested. AC, fridge, outlets, water pump, propane are good. Inverter is clean and all line (AC/DC) are intact. Now with the furnace and propane on, as soon as I bring the thermostat past the initial click the fuse blows. I tested a couple of times to make sure it wasn’t just a bad original fuse. I have since pulled the board to examine it and all resistors look good. Not seeing obstructions but RV was in a snow park for a season. Floors were mushy hence the tear out and replace. Is there a test I can do on the fan blower? Button blower is not tripped. Thanks.

 

[Gary RV_Wizard]

The OP made this same post in another thread, so please make any replies there.

Fuse for furnace blows ever time I turn on

I have similar issue but every time I try to start the furnace the fuse blows. This RV was really abused before I bought it. Hot water tank works so I know I have the propane lines connected fine. I had to gut the floors and disconnected power across the floors, removed the water tank and lines...

www.rvforum.net

 

[Jackiemac]

Here's the link to the other Post

'Atwood 8520-IV-DCLP problem' Atwood 8520-IV-DCLP problem