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Goodman gas furnace 10 red flashes: Power supply problem or gas valve fault

Gas furnace, Canada and United States

This code means one of two things, depending on your model. Find your model family below, then read the section for it. The model number is on the rating label on the side of the unit.

Find your model family

If you haveIt means
GMES80 / GCES80 / AMES80 / ACES80, GMES92, GMES96 / GCES96 / AMES96 / ACES96 Control fuse open or no 24 V power to the control board
GMEC96 / GCEC96 / AMEC96 / ACEC96 Gas valve current with no call for heat

Control fuse open or no 24 V power to the control board

On GMES80 / GCES80 / AMES80 / ACES80, GMES92, GMES96 / GCES96 / AMES96 / ACES96.

A fuse is open and the control board has no 24 V power, so the furnace does not run.

This needs a licensed gas technician. There is nothing safe to check yourself. Leave the covers on and book a professional.

What causes it

  1. A high-voltage surge has blown the fuse. A technician replaces it with the power turned off.

    Book a licensed gas technician

How to read this code on your unit

Booking a licensed gas technician

Book a licensed gas technicianlicensed gas technician

  1. Turn the unit off and leave the covers on. Gas components must only be serviced by a licensed technician.
  2. Note the code, how often it appears, and the model and serial numbers from the rating label.
  3. Book a licensed gas technician and give them those details.

Models that show this code

75 models in 3 ranges
RangeModels
GMES80 / GCES80 / AMES80 / ACES80GMES800403AN, GMES800403AX, GMES800603AN, GMES800603AX, GMES800603BN, GMES800603BX, GMES800604BN, GMES800604BX, GMES800803BN, GMES800803BX, GMES800804BN, GMES800804BX, GMES800804CN, GMES800804CX, GMES800805CN, GMES800805CX, GMES801005CN, GMES801005CX, GMES801205DN, AMES800403AX, AMES800603AX, AMES800603BN, AMES800604BX, AMES800803BX, AMES800804BX, AMES800804CX, AMES800805CX, AMES801005CX, AMES801205DX, GCES800403AN, GCES800403AX, GCES800603AN, GCES800603AX, GCES800804BN, GCES800804BX, GCES801005CN, GCES801005CX, ACES800403AN, ACES800403AX, ACES800603AN, ACES800603AX, ACES800804BX, ACES801005CX
GMES92GMES920403AN, GMES920603BN, GMES920803BN, GMES920804CN, GMES920805CN, GMES921004CN, GMES921005CN, GMES921205DN
GMES96 / GCES96 / AMES96 / ACES96GMES960403AN, GMES960603BN, GMES960803BN, GMES960804CN, GMES960805CN, GMES961005CN, GMES961205DN, AMES960403AN, AMES960603BN, AMES960803BN, AMES960804CN, AMES960805CN, AMES961005CN, AMES961205DN, GCES960403BN, GCES960603BN, GCES960804CN, GCES961005CN, GCES961205DN, ACES960403BN, ACES960603BN, ACES960804CN, ACES961005CN, ACES961205DN

Where this comes from

Checked against the manufacturer's manual on 9 October 2026.

Gas valve current with no call for heat

On GMEC96 / GCEC96 / AMEC96 / ACEC96.

The control detected current to the gas valve when there is no call for heat, so gas may be flowing. The furnace does not run.

This needs a licensed gas technician. There are a few safe checks you can do first, marked below. Anything inside the unit is a job for a professional.

This involves the gas supply or burner. Only a licensed technician should open the unit or work on gas parts.

What causes it

  1. An electrical short is feeding voltage to the gas valve.

    Shut off the gas to the furnace, then the powerYou can do this

    1. Close the manual gas shut-off valve on the gas pipe outside the furnace first.
      If you smell gas, do not touch any electrical switch, do not use a phone in the building and do not try to light anything. Leave and call your gas supplier from a neighbour's phone.
    2. Only then turn off the electrical power to the furnace. Goodman says to shut the gas first whenever the furnace overheats or the gas does not shut off.
    3. Leave the furnace off and book a qualified servicer.

    Book a licensed gas technician

  2. If the gas valve wiring is correct, the control board is faulty and needs replacing.

    Book a licensed gas technician

How to read this code on your unit

Booking a licensed gas technician

Book a licensed gas technicianlicensed gas technician

  1. Turn the unit off and leave the covers on. Gas components must only be serviced by a licensed technician.
  2. Note the code, how often it appears, and the model and serial numbers from the rating label.
  3. Book a licensed gas technician and give them those details.

Models that show this code

30 models in 1 range
RangeModels
GMEC96 / GCEC96 / AMEC96 / ACEC96GMEC960302BN, GMEC960303AN, GMEC960402BN, GMEC960403AN, GMEC960603AN, GMEC960603BN, GMEC960803BN, GMEC960804CN, GMEC961004CN, GMEC961005CN, GMEC961205DN, AMEC960302BN, AMEC960303AN, AMEC960402BN, AMEC960403AN, AMEC960603AN, AMEC960603BN, AMEC960803BN, AMEC960804CN, AMEC961004CN, AMEC961005CN, AMEC961205DN, GCEC960403BN, GCEC960603BN, GCEC960803BN, GCEC961005CN, ACEC960403BN, ACEC960603BN, ACEC960803BN, ACEC961005CN

Where this comes from

Checked against the manufacturer's manual on 13 October 2026.

Other Goodman gas furnace codes

Code Meaning What you can do
b6 Blower motor shut down for voltage or overheating Call a pro
E5 Open fuse on the control board Call a pro
Eb6 Blower motor shut down for voltage or overheating Call a pro
ECF Gas valve stepper motor communication error Call a pro
EE No power to the control board, or an internal control fault You can often fix it
EE5 Open fuse on the control board Call a pro
EEb Gas valve not powered when it should be Call a pro
EEC Gas valve powered when it should be off Safe checks first, then a pro
light off No power to the control board Safe checks first, then a pro
1 red flash Ignition failure or gas valve fault (depends on model) Safe checks first, then a pro
9 red flashes Configuration error or electrical fault (depends on model) Call a pro
11 red flashes Ignition failure or overheat (depends on model) Call a pro

See all power supply problem codes on gas furnaces across brands.

See all gas valve fault codes on gas furnaces across brands.

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