Goodman Furnace Troubleshooting 4 Blinking Lights

A high limit switch protects the furnace against overheating and damage it s located in the output duct or plenum of the furnace and turns the furnace off if things get too hot up there the usual cause of a high limit trip is inadequate airflow in your case because an apparently faulty connection was causing the fan to not run.

Goodman furnace troubleshooting 4 blinking lights.

I m not a tech and just some diy on how to trouble shoot a faulty limit switch. Your furnace will automatically try again after an hour of lockout. Came home to a cold house blowing cold air. High limits and you.

You can solve this by cutting power to your goodman furnace for 30 seconds or by lowering your thermostat to what it was before you turned it up and then try to turn it up again. Translate four led flashes to mean your furnace has a primary limit circuit open possibly from loose wiring or blocked filters. Then if you enter your model number into the search field we ll show you which hvac parts are recommended to solve your goodman furnace problem. Step 1 turn off the goodman furnace and examine the power cord to ensure the cord is plugged into an outlet with at least 115 volts power.

The repair clinic troubleshooting system allows you to choose from a list of symptoms your furnace may be experiencing. Interpret five led flashes to mean your goodman furnace senses a flame without a call for heat. Gas and oil home heating furnaces goodman furnace with 6 light blinks i just moved in to my house 2 weeks ago and my furnace went out this morning it is a goodman furnace model number gdh80703ax. I ve got a brand new goodman gas furnace that when it was installed and turned on for the first time turned on the inducer motor for about 10 seconds and then starts flashing the red light 4 times fol read more.