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Goodman Error Code LED off: No LED – no power or control failure (Furnace)

Updated · by Aurora Star Tech Inc.

Goodman error code LED off on a furnace means: No LED - no power or control failure. It is also called Goodman diagnostic code LED off.

High severityFurnaceGoodman/Amana *MES9 single-stage

Homeowner? What Goodman code LED off means for you

Call a technician Your furnace is reporting: No LED - no power or control failure. The furnace has locked out or cannot run properly. One reset is fine; if the code comes back, it needs a licensed technician to find the cause.

Safe things you can check yourself

  • Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
  • Make sure the unit has power: its on/off switch (often looks like a light switch near the unit) is ON and the breaker in the electrical panel is not tripped.
  • Make sure the furnace front door or panel is closed properly; many furnaces will not run with the door switch open.
  • Look at the air filter. If it is grey and clogged, replace it; a blocked filter causes many shutdowns.
  • Outside, make sure the intake and exhaust pipes or vent cap are not blocked by snow, ice, leaves or a nest.
  • Check that the gas valve next to the furnace is open (handle in line with the pipe). Do not force it.
  • Try one reset: turn the power off for 30 seconds, then back on. If the code comes back, stop resetting and call a technician.

Call (647) 657-2977Book a service call

Licensed technicians serving Vaughan, Toronto and the GTA.

What does Goodman error code LED off mean?

The diagnostic LED on the control is dark and the furnace does nothing. The wiring diagram legend also lists LED off as a control failure. The LED table adds that off can mean the gas valve was on when it should be off, or off when it should be on.

Applies to: GMES9, GCES9, AMES9, ACES9, VMES9, VCES9 (single stage, 92% and 96%)

Common causes of Goodman code LED off

  • No 115 V to the furnace: disconnect off, door switch open, breaker tripped or fuse blown
  • No 24 V at the control, loose 24 V wires
  • Blown 3 A control fuse

A technician checks these and 1 other possible causes on site before replacing any part.

Safety: Gas, electrical and refrigerant work must be done by a licensed technician. Turn off power and gas before servicing, never bypass a safety control, and always follow the manufacturer's manual for your exact model.

Goodman models that use code LED off

Show all 57 models

ACES96ACES960403BNAAACES960603BNAAACES960804CNAAACES961005CNAAACES961205DNAAAMES92AMES96AMES920403ANAAAMES920603BNAAAMES920803BNAAAMES920804CNAAAMES920805CNAAAMES921004CNAAAMES921005CNAAAMES921205DNAAAMES960403ANAAAMES960603BNAAAMES960803BNAAAMES960804CNAAAMES960805CNAAAMES961005CNAAAMES961205DNAAGCES96GCES960403BNAAGCES960603BNAAGCES960804CNAAGCES961005CNAAGCES961205DNAAGMES92GMES96GMES920403ANAAGMES920603BNAAGMES920803BNAAGMES920804CNAAGMES920805CNAAGMES921004CNAAGMES921005CNAAGMES921205DNAAGMES960403ANAAGMES960603BNAAGMES960803BNAAGMES960804CNAAGMES960805CNAAGMES961005CNAAGMES961205DNAAVCES96VCES960403BNAAVCES960603BNAAVCES960804CNAAVCES961005CNAAVMES96VMES960403ANAAVMES960603BNAAVMES960803BNAAVMES960804CNAAVMES961005CNAA

Other Goodman Furnace codes

CodeMeaning
HP1Heat pump heat, low stage
HP2Heat pump heat, high stage
HUdHumidifier on
IdLIdle - no call
L0Low-stage heat
L6FLast 6 faults (view and clear)
LED steady onNormal operation
LrnLearn menu
OPNormal - waiting for a call
Rapid flashReversed polarity
Red LED 1 flashRed communications LED 1 flash - communication failure
Red LED 2 flashesRed communications LED 2 flashes - reset in progress

All Goodman Furnace error codes →

Goodman code LED off: homeowner questions

What does Goodman code LED off mean?

No LED - no power or control failure. The diagnostic LED on the control is dark and the furnace does nothing. The wiring diagram legend also lists LED off as a control failure. The LED table adds that off can mean the gas valve was on when it should be off, or off when it…

Is it safe to keep using my furnace with code LED off?

It depends on the cause. The furnace has locked out or cannot run properly. One reset is fine; if the code comes back, it needs a licensed technician to find the cause.

Can I reset Goodman code LED off myself?

You can try one reset (power off for 30 seconds, then on). If Goodman code LED off comes back, the cause is still there and a licensed technician should check it.

Who can fix Goodman code LED off near me?

Aurora Star Tech Inc. repairs Goodman furnaces in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.

Homeowner help: Furnace Not Turning On: What to Check · Furnace Blinking Light: What the Flash Codes Mean

Troubleshooting guides

Source: Goodman Service and Troubleshooting GMES9*/GCES9*/AMES9*/ACES9*/VMES9*/VCES9* (RS6612016r3) , Troubleshooting Chart p.51; LED table p.44. Written in our own words as a summary; always check the original manual.

General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.

© 2026 Aurora Star Tech Inc. All rights reserved. This page may not be copied, republished or used to train other systems without written permission.

Emergency Furnace Repair

647-657-2977