Limit Circuit Open. Limit circuit open or External Load on "W" Nordyne/Intertherm M3RL080A Kept tripping limit, had a 16x25 filter, I widened the ductwork on the supply plenum and moved the transition higher up so it wouldnt choke the air down so quick A 4-flash code can be for an open main limit or an auxiliary limit
Limit Switch Wiring Diagram / Limit Switch Working Principle Your from muarapulutans.blogspot.com
status code #4 continues to flash until dower shuts off. Follow these steps to troubleshoot and resolve the problem:
Limit Switch Wiring Diagram / Limit Switch Working Principle Your
Even raised the limit temp up by 10 degrees didnt want too but was told to by tech support Here is what I have done so far (most as part of general service): Changed 2 x limit switch Changed Pressure switch Changed ignitor Changed flame sensor Changed board Anyone any ideas with these furnaces as to why it would still throw this code after this? Blower will run for 4 min or until open switch remakes whichever is longer
How To Make A Simple VARIABLE Current Limiting Circuit for high power. Unplug the connector and check the resistance, pins 1 and 7 on XB80 If open longer than 3 min., code changes to lockout #7.
Limit circuit open or External Load on "W" Nordyne/Intertherm M3RL080A. If open longer than 3 min, code changes to lockout #7 limit circuit open I have Gibson furnace, fan blows but no heat