Goodman Furnace Error Code 6 Flash: How to Fix It

Q: What causes reversed polarity in a Goodman furnace?

Reversed polarity typically occurs during installation when the hot and neutral wires are accidentally swapped at the electrical connection point. This can happen at the furnace junction box, the disconnect switch, or even at the electrical panel.

Q: Is it safe to run my Goodman furnace with error code 6 flash?

No, never run the furnace with this error code. Reversed polarity creates serious safety hazards including fire risk and potential damage to the furnace electronics. The furnace shuts down to protect itself and your home.

Q: Can I fix Goodman error code 6 flash myself?

While it's possible for someone with electrical experience to fix this, it's strongly recommended to hire a licensed electrician. Reversed polarity involves working with live electrical circuits and requires proper safety knowledge and tools.

Q: How much does it cost to fix reversed polarity in a Goodman furnace?

Professional repair typically costs $150-300, depending on the complexity of the wiring issue and local labor rates. The fix itself is usually straightforward - most of the cost is for the electrician's time and expertise.

Q: Will reversed polarity damage my Goodman furnace?

Modern Goodman furnaces have safety features that detect reversed polarity and shut down to prevent damage. However, prolonged operation with reversed polarity in older units could potentially damage electronic components and create fire hazards.

Abstract

Goodman furnace error code 6 flash indicates reversed polarity at the 115V AC input, meaning the hot and neutral wires are connected backwards. This is a serious electrical safety issue that can damage your furnace and create fire hazards. The furnace will shut down to protect itself and your home.