Furnace Limit Switch Open Error

The limit switch will open periodically to prevent over heating.

Furnace limit switch open error.

The primary limit switch which prevents the furnace from heating to unsafe temperatures is programmed to reset automatically after a malfunction. Limit switches turn off the burner and turn on the circulating fan if there is a high temperature condition in the furnace. Depending on your furnace model the switch will be surrounded by a silver or white cover. It will be located at the top of the panel.

Is there a reset. The code means that there is a limit switch open i will post a pic of one and describe where they are located so you can reset it need a minute or two full size image jacustomer pq8eizy8. Goodman residential furnaces contain multiple limit switches to ensure safe operation. Thank you so much my wife and three year old will appreciate the heat if it works.

A fault will appear when it s open or if it doesn t reset within a specified period of time during which the blower is expected to circulate enough air to cool the heat exchanger to. My york ly8s furnace is flashing 4 red code open limit switch the troubleshooting guide says this is dirty filters. I have a frigidaire furnace model fg7tc o8od vc and the flashing green and no red lights tell me i have a open limit switch fault. Green light and r read more.

If the furnace failure code indicates an open limit or open high temperature switch or open rollout switch it is probable that the furnace has overheated. Attempting to reset the furnace limit switch while the power is connected may result in electrical shock. Locate the white limit switch. Remove the cover by lifting it upwards or pulling it off to reveal the body of the switch and two metal arms.

The auxillary fan works and the blower motor seems to be working fine but no flame heat.