Goodman Furnace 4 Blinks Limit Switch

I had the same problem last year but got a tech to fix it.

Goodman furnace 4 blinks limit switch.

It will just kill the power to the gas valve in the unlikely event all the other limits fail. Goodman residential furnaces contain multiple limit switches to ensure safe operation. Founded in 1982 goodman manufacturing is an american company that produces heating and air conditioning equipment for residential and commercial customers. Usual causes are a dirty filter blocked return air grille dirty evaporator coil if equipped with a c restricted air flow dirty blower wheel or blower not operating.

Everything seems to work fine up until the point where the blower needs to turn on. Translate four led flashes to mean your furnace has a primary limit circuit open possibly from loose wiring or blocked filters. I am starting the furnace for the winter and it gives me a led code of open limit switch or limit switch circuit. Came home to a cold house blowing cold air.

I m not a tech and just some diy on how to trouble shoot a faulty limit switch. Open limit switch on concord gas furnace 14 answers i have a concord 80 plus gas furnace. Blower and exhaust fan still running. Open aux limit won t give you any code it s downstream of the board.

We have this problem happen before when the power went out it trips the limits so it doesn t burn up the blower. Check and clean filters tighten wiring and check the flue for blockages. The control module led blinks in 4 blink sequences for exactly 60 seconds this indicates open limit switch according to guide on unit. Interpret five led flashes to mean your goodman furnace senses a flame without a call for heat.

The 4 flash code on your furnace applies that your primary limit circuit is open airheatman. Induction motor was running non s. I tested all the limit switches for continuity and all were fine. The pri mit will give you a 4 blink code.

Found the 4 blinking red light error on the board which states a limit switch problem. When thermostat kicks on furnace lights as expected. Goodman furnace with 4 blinks on red light. Open rollouts 6 blinks.