goodman furnace codes

If you’re looking for help fixing your Goodman furnace, look no further! Our comprehensive Goodman furnace repair guide will explain common issues, provide troubleshooting tips, and show you how to read your model’s error codes.

CODE: Single LED flash, steadily on
PROBLEM: This means your Goodman furnace has no signal coming from the thermostat and won’t operate.
FIX: You should check your thermostat for an improper setting or connection.

CODE: Single LED flash, blinks on and off
PROBLEM: This means that your furnace has locked out due to too many ignition attempts.
FIX: After one hour of lockout, your furnace will automatically reset itself.

CODE: Two LED flashes
PROBLEM: This means that the draft blower isn’t functioning properly, or your furnace has a short in the pressure switch circuit.
FIX: You should either repair the short or replace the pressure switch.

CODE: Three LED flashes
PROBLEM: This means your furnace has an open pressure switch circuit or the induced draft blower is operating when it shouldn’t be.
FIX: You should check the pressure switch hose for blocks or an improper connection. Otherwise, see if any loose wiring needs tightening.

CODE: Four LED flashes
PROBLEM: This means your furnace has a primary open limit circuit.
FIX: You should check and clean all the filters, tighten the wiring, and see if there are any blockages in the flue.

CODE: Five LED flashes
PROBLEM: This means that your furnace senses a flame without a call for heat.
FIX: You should check for a leaky or open gas valve or a lingering burner flame.

CODE: Seven LED flashes
PROBLEM: This warns of a low flame sense microamp signal. This is the result of a coated flame sensor or a lazy flame due to poor gas pressure.
FIX: Adjust the gas pressure according to the information available to you.

CODE: Eight LED flashes
PROBLEM: This means your furnace has an igniter circuit problem due to a defective igniter or an improperly connected igniter.
FIX: Replace the igniter or check the ground wiring for defects.

CODE: Nine LED flashes
PROBLEM: This means that your furnace has a high-stage pressure switch that won’t close during a high-stage-induced draft blower operation.
FIX: Check your Goodman furnace for a pinched or blocked pressure switch hose.

CODE: Continuous LED flashes
PROBLEM: This means that your furnace has a reversed polarity of 115 volts.
FIX: You will have to correct the wiring polarity after reviewing the wiring diagram.

goodman furnace codes

 


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August 7, 2020

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I would recommend KDM for any of the services they provide

August 7, 2020

I had a 2nd hand pool heater hooked up and needed help getting it fired up. So I contacted Dan at KDM to see if they could help and was pleased he could make it over within a couple of days. He checked out the gas piping for leaks and proceeded to analyze the components of the control system and determined a faulty pressure switch was likely preventing operation. I was able to source the part and Dan was able to make a 2nd call within a day to install and complete the job. So in summary, I would recommend KDM for any of the services they provide.

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KDM was hired for the Installation and relocation of internal gas line

August 7, 2020

KDM was hired for the Installation and relocation of internal gas line for my basement finishing project.

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Daniel and Steve were amazing, very professional work and courteous

August 7, 2020

Daniel and Steve were amazing, very professional work and courteous….never dealt with more friendly and knowledgeable Hvac technicians.

Rajshar MahomesMarkham, Ontario

I would not hesitate to hire Daniel and his crew again

August 7, 2020

Asked for quotes on a A/C and furnace after 17 years when the A/C unit broke down. I contacted a few HVAC contractors including KDM. Daniel could not have been more helpful and responsive and after reviewing the quotes decided to hire him for the job. Could no have made a better choice. Daniel was patient and upfront and answered all my questions when asked. He upgraded my A/C unit for the same price after the original unit we agreed upon was back ordered. The crew came when they said they would an completed the installation in a timely and orderly fashion.

I would not hesitate to hire Daniel and his crew again. In fact he is coming back to deal with another issue I have next month!

Job well done.

Ian DavidPickering, Ontario

I definitely recommend KDM Home & gas for others

August 7, 2020

I was looking for someone who can do the gas line connection on a weekend and I found the right guys with KDM Home & Gas. Daniel came on Sunday morning to do the work. He installed the new gas line, connected the new gas stove, confirmed no leaks and ensured everything works fine. It was a really hot day outside but he did an excellent job.

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August 7, 2020

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Chris SouthamWhitby, Ontario