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Goodman Error Code Ed4: Memory card data rejected (Furnace)

Updated · by Aurora Star Tech Inc.

Goodman error code Ed4 on a furnace means: Memory card data rejected. It is also called Goodman diagnostic code Ed4.

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

Homeowner? What Goodman code Ed4 means for you

Check, then call Your furnace is reporting: Memory card data rejected. This is often caused by something simple. Try the safe checks below; if the code returns, book a service call before it turns into a no-heat or no-hot-water emergency.

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 Ed4 mean?

The control refused the shared data set loaded from the memory card, so the furnace may act oddly or not run.

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

Common causes of Goodman code Ed4

  • Shared data set does not match this furnace model
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 Ed4

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

Other Goodman Furnace codes

CodeMeaning
Eb9Inadequate airflow
Ec1Network communication alarm
Ec2E-module network communication alarm
Ec3Bluetooth module network communication alarm
Ed0No shared data on the network
Ed1Invalid data on network
Ed5Invalid downloaded firmware
Ed6Unrecognized data ID
EE0Lockout - too many ignition retries (3)
EE1Pressure switch closed at start of heating cycle
EE2Pressure switch did not close (inducer runs, no ignition)
EE3High (primary) limit open

All Goodman Furnace error codes →

Goodman code Ed4: homeowner questions

What does Goodman code Ed4 mean?

Memory card data rejected. The control refused the shared data set loaded from the memory card, so the furnace may act oddly or not run.

Is it safe to keep using my furnace with code Ed4?

It depends on the cause. This is often caused by something simple. Try the safe checks below; if the code returns, book a service call before it turns into a no-heat or no-hot-water emergency.

Can I reset Goodman code Ed4 myself?

You can try one reset (power off for 30 seconds, then on). If Goodman code Ed4 comes back, the cause is still there and a licensed technician should check it.

Who can fix Goodman code Ed4 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 / Troubleshooting Chart p.62. 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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