When thermostat kicks on furnace lights as expected.
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.
Translate four led flashes to mean your furnace has a primary limit circuit open possibly from loose wiring or blocked filters.
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.
I am starting the furnace for the winter and it gives me a led code of open limit switch or limit switch circuit.
Goodman residential furnaces contain multiple limit switches to ensure safe operation.
First run will go about 4 minutes before flame goes out.
Found the 4 blinking red light error on the board which states a limit switch problem.
Came home to a cold house blowing cold air.
I reset the limits on both sides and it works for a few minutes blowing heat goodman furnace with 4 blinks on red light.
Open limit switch on concord gas furnace 14 answers i have a concord 80 plus gas furnace.
I m not a tech and just some diy on how to trouble shoot a faulty limit switch.
Goodman furnace with 4 blinks on red light.
Open aux limit won t give you any code it s downstream of the board.
Check and clean filters tighten wiring and check the flue for blockages.
Interpret five led flashes to mean your goodman furnace senses a flame without a call for heat.
I had the same problem last year but got a tech to fix it.
Goodman furnace 4 red led blinks indicating high open limit.
The control module led blinks in 4 blink sequences for exactly 60 seconds this indicates open limit switch according to guide on unit.
We have this problem happen before when the power went out it trips the limits so it doesn t burn up the blower.
Blower and exhaust fan still running.
I tested all the limit switches for continuity and all were fine.
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.
The pri mit will give you a 4 blink code.
