HVAC Error Code 13 Limit Circuit Open Flash Code Easy Fix YouTube

Limit Circuit Open. Limit circuit open or External Load on "W" Nordyne/Intertherm M3RL080A Follow these steps to troubleshoot and resolve the problem: 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?

Current Limiting Math Behind HighSide Current Limiting Circuit
Current Limiting Math Behind HighSide Current Limiting Circuit from itecnotes.com

View Profile View Forum Posts View Forum Threads Professional Member Join Date Jun 2006 Posts 680. Now here is the final possibility.there are times where it is not actually an open limit

Current Limiting Math Behind HighSide Current Limiting Circuit

limit circuit open I have Gibson furnace, fan blows but no heat Follow these steps to troubleshoot and resolve the problem: limit circuit open I have Gibson furnace, fan blows but no heat

A foldback currentlimit circuit with loadinsensitive quiescent. It is a bad circuit board either not sending 24v to the limit circuit, OR it does not recognize the 24v returning back from the limits A 4-flash code can be for an open main limit or an auxiliary limit

Limit circuit open or External Load on "W" Nordyne/Intertherm M3RL080A. Unplug the connector and check the resistance, pins 1 and 7 on XB80 If you verify ALL limits are closed..and it still codes, then you have a bad control board