Goodman HVAC Error Code 23: How to Fix It

Medium 30 minutes to 2 hours Medium Severity Verified June 2026
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Error Code
23
Brand
Goodman
Product Type
hvac
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
30 minutes to 2 hours
Error code 23 on your Goodman HVAC system indicates an EEPROM (electrically erasable programmable read-only memory) fault. This usually means the control board has a memory issue, often due to a power surge or component failure. Before calling a technician, try these steps to potentially reset or replace the control board.
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Tools You'll Need

How to Fix Error Code 23

  1. Power Cycle the System

    Always turn off the circuit breaker before working on the unit to avoid electrical shock.

  2. Inspect Control Board for Damage

    Be careful not to touch any live circuits. If unsure, consult a professional.

  3. Reset the Control Board

    Only attempt this if you are comfortable with electronics. Otherwise, skip to step 4.

  4. Replace the Control Board

    Double-check wiring before powering on. Incorrect wiring can damage the new board.

Parts You May Need

HVAC control board
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HVAC control board
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HVAC control board
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HVAC control board
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When to Call a Professional

If power cycling and resetting the board do not clear the error, or if you are uncomfortable working with electrical components, call a professional HVAC technician. Control board replacement requires precise wiring and can be dangerous if done incorrectly.

Frequently Asked Questions

Can I clear Goodman error code 23 by simply turning the system off and on?
Yes, sometimes a simple power cycle resolves temporary EEPROM glitches. If the error reappears, further troubleshooting is needed.
What does EEPROM fault mean on my Goodman AC?
It indicates a memory failure on the control board. The board's stored settings have been corrupted, often due to power surges or component age.
Is it safe to replace the control board myself?
If you have basic electrical knowledge and follow safety precautions, it can be safe. However, if you are unsure, hire a professional to avoid injury or damage.
How much does it cost to fix Goodman error code 23?
If you replace the control board yourself, the part costs $100-$300. Hiring a pro can cost $300-$600 including labor.
Will error code 23 go away on its own?
No, it requires resetting or replacing the control board. Ignoring it may cause your system to stop cooling or heating.

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