Goodman furnace with 4 blinks on red light.
Goodman furnace 4 blinks limit switch.
I am starting the furnace for the winter and it gives me a led code of open limit switch or limit switch circuit.
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.
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.
Induction motor was running non s.
I tested all the limit switches for continuity and all were fine.
Blower and exhaust fan still running.
Open rollouts 6 blinks.
The control module led blinks in 4 blink sequences for exactly 60 seconds this indicates open limit switch according to guide on unit.
Translate four led flashes to mean your furnace has a primary limit circuit open possibly from loose wiring or blocked filters.
I reset the limits on both sides and it works for a few minutes blowing heat goodman furnace with 4 blinks on red light.
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 had the same problem last year but got a tech to fix it.
We have this problem happen before when the power went out it trips the limits so it doesn t burn up the blower.
It will just kill the power to the gas valve in the unlikely event all the other limits fail.
Open limit switch on concord gas furnace 14 answers i have a concord 80 plus gas furnace.
The pri mit will give you a 4 blink code.
I m not a tech and just some diy on how to trouble shoot a faulty limit switch.
Open aux limit won t give you any code it s downstream of the board.
Goodman residential furnaces contain multiple limit switches to ensure safe operation.
First run will go about 4 minutes before flame goes out.
Check and clean filters tighten wiring and check the flue for blockages.
