Goodman Furnace 4 Blinks Limit Switch

I tested all the limit switches for continuity and all were fine.

Goodman furnace 4 blinks limit switch.

The control module led blinks in 4 blink sequences for exactly 60 seconds this indicates open limit switch according to guide on unit. Induction motor was running non s. Blower and exhaust fan still running. We have this problem happen before when the power went out it trips the limits so it doesn t burn up the blower.

Goodman residential furnaces contain multiple limit switches to ensure safe operation. The pri mit will give you a 4 blink code. When thermostat kicks on furnace lights as expected. Interpret five led flashes to mean your goodman furnace senses a flame without a call for heat.

First run will go about 4 minutes before flame goes out. Founded in 1982 goodman manufacturing is an american company that produces heating and air conditioning equipment for residential and commercial customers. Found the 4 blinking red light error on the board which states a limit switch problem. Open limit switch on concord gas furnace 14 answers i have a concord 80 plus gas furnace.

Goodman furnace with 4 blinks on red light. I had the same problem last year but got a tech to fix it. Goodman furnace 4 red led blinks indicating high open limit. I reset the limits on both sides and it works for a few minutes blowing heat goodman furnace with 4 blinks on red light.

Check and clean filters tighten wiring and check the flue for blockages. It will just kill the power to the gas valve in the unlikely event all the other limits fail. I m not a tech and just some diy on how to trouble shoot a faulty limit switch. Everything seems to work fine up until the point where the blower needs to turn on.

The 4 flash code on your furnace applies that your primary limit circuit is open airheatman. Open aux limit won t give you any code it s downstream of the board. Open rollouts 6 blinks. Translate four led flashes to mean your furnace has a primary limit circuit open possibly from loose wiring or blocked filters.