Question about Heating & Cooling
A limit switch opens when the heat exchanger gets too hot. To check the switch with a meter turn the power to the furnace off, then disconnect the wires from the switch and set a meter to resistance, if the switch is open the meter will indicate infinite resisitance. There are several reasons why a limit switch opens and some of those reasons are
1) dirty air filter
2) the gas pressure on the gas valve is set too high
3) a problem with the blower motor
Posted on Jan 03, 2011
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Apr 01, 2017 | Heating & Cooling
Jun 25, 2017 | Heating & Cooling
Aug 23, 2010 | Heating & Cooling
Mar 05, 2010 | York Furnace Draft Inducer Blower Fasco #...
Feb 04, 2010 | Heating & Cooling
Jan 31, 2010 | Goodman Heating & Cooling
Nov 26, 2009 | York Yankees Bedding MLB Comforter
Jun 20, 2009 | York Furnace Draft Inducer Blower Fasco #...
Apr 12, 2009 | Water Heaters
85 people viewed this question
Usually answered in minutes!