Goodman HVAC Error Code 24: How to Fix It

Hard 1-2 hours Medium Severity Verified June 2026
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Error Code
24
Brand
Goodman
Product Type
hvac
Severity
Medium
DIY Difficulty
Hard
Estimated Fix Time
1-2 hours
Error code 24 on your Goodman HVAC system means the inverter board has detected a fault. The inverter board controls the compressor speed and is critical for efficient operation. This guide will help you diagnose and resolve the issue safely.
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Tools You'll Need

How to Fix Error Code 24

  1. Power Down the System

    Always disconnect power before servicing to avoid electric shock.

  2. Inspect the Inverter Board

  3. Check Wiring and Connections

    Be careful not to touch live circuits even with power off; capacitors may hold charge.

  4. Measure DC Bus Voltage

    High voltage can be present even after power off. Use insulated probes and discharge capacitors if needed.

  5. Check for Short Circuits

  6. Replace the Inverter Board if Faulty

    Ensure the replacement board is compatible with your system (check part number).

  7. Restore Power and Test

Parts You May Need

Inverter board
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Inverter board
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Inverter board
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Inverter board
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When to Call a Professional

If you are not comfortable working with high-voltage electronics, or if the inverter board replacement does not clear the error, contact a licensed HVAC technician. Professional diagnosis may require specialized tools to check the compressor and other components.

Frequently Asked Questions

Can I reset error code 24 on my Goodman AC?
Yes, you can reset the error by turning off the power at the circuit breaker for 30 seconds, then turning it back on. However, if the underlying fault remains, the error will return.
How much does it cost to replace a Goodman inverter board?
The inverter board itself typically costs between $200 and $600, depending on the model. Professional installation can add $150-$300 in labor.
What causes a Goodman inverter board to fail?
Common causes include power surges, lightning strikes, overheating due to poor ventilation, and age-related component wear.
Will error code 24 prevent my AC from running?
Yes, the system will usually not operate to prevent further damage. The compressor will not start, and the fan may run or not depending on the safety logic.
Can I bypass the inverter board to run my AC?
No, bypassing the inverter board is dangerous and can damage the compressor or cause a fire. Always repair or replace the faulty board.

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