I came back and found a new error code - ignition lockout. I stopped at that point, and came back a few days later. I turned on switch 6 to test the ignition components, blower worked and I got a glowing igniter, but no flame. I checked and reseated the config module. I got error 25 = "Improper configuration." I followed the troubleshooting guide, erased the codes and restarted it. The previous owners owners were kind enough to leave the manuals. The furnace fan had been running constantly, and I remember thinking, "The wife must have manually switched the fan on to bring cool air up from the basement to cool off the house." Nope, the furnace failed one cool morning, and we didn't notice it because the afternoons were so warm. Be sure to check out the wiring diagram in the manual.Well, up here in Seattle the weather finally cooled off after a record-breaking hot summer. I hope this helps you adjust the Goodman furnace blower speed. A properly working furnace needs to be sized correctly and installed correctly to get the proper airflow. They know the required airflow needed within the system.Īdjusting the blower speed is a temporary fix and could cause damage to the motor if the main issue is not addressed. Attach the wire that is articulating the speed you want.Ī Goodman furnace blower speed adjustment is generally not a DIY task.The wire’s color will determine the speed settings that the motor will run at.You have to switch the wires to the blower motor.You need to find the wires that determine blower speed inside your furnace.Turn off the power source that is connected to the furnace blower.If you know what you are doing, it is very easy to adjust the speed of your Goodman furnace. How to Adjust the Blower Speed on Goodman Furnaces You can also decrease your blower speed to quiet the unit if your furnace is too noisy. If you find your home is a bit cold, you may want to increase the furnace blower speed to improve airflow. Why would you adjust the blower speed on a goodman furnace? There are many reasons you may want to change the blower speed of your furnace, such as: Goodman furnace blower speed can be adjusted to receive temperature rise within the range specified on the rating plate. The installer must adjust blower cooling and heating speed as needed (about 400 cfm airflow per ton when cooling is desirable). Follow these steps to get started with the Goodman furnace blower speed adjustment.Īll Goodman furnaces ship as high-speed cooling and medium-speed heating. To have your furnace work at its maximum capacity, you need to adjust it to the right blower speed.
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