Limit circuit open
Asked Oct 23, 2009, 05:11 AM
I have a nordyn furnace. I replace the inducer motor cause it was making a noise and would not run all the time. I also replace a limit switch that is built onto the inducer motor. This limit switch keeps triping and it throws a code of "limit circuit open or external load on "w"." I can disconnect the two wires to the limit switch and short them together and it runs fine. My question is where do I look to fix the problem? I just spent $226.00 for the new inducer motor and limit switch. It's getting expensive.