Furnace Error Open High Limit Switch

Free shipping on your first order shipped by amazon.

Furnace error open high limit switch.

Example limit switch on amazon honeywell l4064b2236 combination fan and limit furnace control. I have a 1994 lennox 80 mgf series furnace and there is a 4 ligh flashing which say high limit or rollout switch open. Limit switches turn off the burner and turn on the circulating fan if there is a high temperature condition in the furnace. I have the the amana air command 80 high eff gas furnace and the unit works for 3 4 hrs cycling on and off normally then will shut down and won t start again until the unit is powered off reset.

Some furnaces will have two or even three high limit switches wired in series and checking the temperature at deferent points in the furnace. Get it as soon as thu sep 17. If the temperature inside the unit becomes to high the high limit switch will turn the gas off to the unit. Remove the cover by lifting it upwards or pulling it off to reveal the body of the switch and two metal arms.

Attempting to reset the furnace limit switch while the power is connected may result in electrical shock. Some technicians will try to tell you they are suppose to trip. Place a thermometer on the high limit switch and see how hot it is really getting. Green light and r read more.

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. Locate the white limit switch. 1 16 of 368 results for furnace high limit switch b13701 55 goodman oem furnace replacement limit switch. Goodman residential furnaces contain multiple limit switches to ensure safe operation.

A clogged up furnace filter will block air flow into a furnace and raise the temperature inside it. 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. The primary limit switch which prevents the furnace from heating to unsafe temperatures is programmed to reset automatically after a malfunction. 4 4 out of 5 stars 70.

Things to check first. It will be located at the top of the panel. Easy enough to figure out. More buying choices 8 80 7 new offers.

As others have stated either the switch is bad or your your furnace has overheated. Founded in 1982 goodman manufacturing is an american company that produces heating and air conditioning equipment for residential and commercial customers.