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Goodman Error Code Ec3: Bluetooth module network communication alarm (Furnace)

Updated · by Aurora Star Tech Inc.

Goodman error code Ec3 on a furnace means: Bluetooth module network communication alarm. It is also called Goodman diagnostic code Ec3.

Low severityFurnaceGoodman/Amana *MVC96 (34.5 in. chassis)

Homeowner? What Goodman code Ec3 means for you

Usually minor Your furnace is reporting: Bluetooth module network communication alarm. This code is usually informational or minor. The safe checks below often clear it; call us if it keeps showing up.

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 Ec3 mean?

Listed in the alarm table only. No cause or fix is given in the manual.

Applies to: GMVC96, GCVC96, AMVC96, ACVC96 (*BA, ComfortBridge)

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 Ec3

*CVC960403BNB**CVC960603BNB**CVC960804CNB**CVC961005CNB**CVC961205DNB**MVC960403BNB**MVC960603BNB**MVC960803BNB**MVC960804CNB**MVC961005CNB**MVC961005DNB**MVC961205DNB*ACVC96AMVC96GCVC96GMVC96

Other Goodman Furnace codes

CodeMeaning
Eb5Blower motor locked rotor
Eb6Blower motor over/under voltage or over temperature
Eb7Blower motor missing parameters
Eb9Inadequate airflow
Ec1Network communication alarm
Ec2E-module network communication alarm
Ed0No shared data on the network
Ed1Invalid data on network
Ed4Memory card data rejected
Ed5Invalid downloaded firmware
Ed6Unrecognized data ID
EE0Lockout - too many ignition retries (3)

All Goodman Furnace error codes →

Goodman code Ec3: homeowner questions

What does Goodman code Ec3 mean?

Bluetooth module network communication alarm. Listed in the alarm table only. No cause or fix is given in the manual.

Is it safe to keep using my furnace with code Ec3?

Usually yes. Code Ec3 is normally minor, but if it keeps coming back have it checked.

Can I reset Goodman code Ec3 myself?

You can try one reset (power off for 30 seconds, then on). If Goodman code Ec3 comes back, the cause is still there and a licensed technician should check it.

Who can fix Goodman code Ec3 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 ACVC96*BA/AMVC96*BA/GCVC96*BA/GMVC96*BA , Alarm Code Table p.56 / Alarm Code Table p.56. 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

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