Goodman HVAC Continuous Flash Error: How to Fix It
Hard 2-4 hours Critical Severity
Verified June 2026
- Error Code
- Continuous flash
- Brand
- Goodman
- Product Type
- hvac
- Severity
- Critical
- DIY Difficulty
- Hard
- Estimated Fix Time
- 2-4 hours
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Tools You'll Need
- Phillips screwdriver
- Flat-head screwdriver
- Multimeter
- Camera or phone
- Masking tape
- Wire strippers (if needed)
How to Fix Error Code Continuous flash
-
Turn Off Power and Gas Supply
Always disconnect power and gas before servicing HVAC equipment to prevent electrical shock, burns, or gas leaks. -
Access the Control Board
Take photos of all wire connections before disconnecting anything to ensure proper reconnection. -
Document Wire Connections
-
Test Voltage Readings
Use extreme caution when testing live circuits. If you're not comfortable with electrical testing, skip this step and call a professional. -
Remove the Faulty Control Board
Handle the control board by its edges only to avoid damage from static electricity. -
Install the New Control Board
Double-check all connections before restoring power. Incorrect wiring can damage the new board or create safety hazards. -
Test System Operation
Parts You May Need
HVAC Control Board
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Wire Connectors
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HVAC Control Board
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Wire Connectors
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HVAC Control Board
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Wire Connectors
Check Price on Amazon
HVAC Control Board
Check Price on Amazon
Wire Connectors
Check Price on Amazon
HVAC Control Board
Check Price on Amazon
Wire Connectors
Check Price on Amazon
HVAC Control Board
Check Price on Amazon
Wire Connectors
Check Price on Amazon
HVAC Control Board
Check Price on Amazon
Wire Connectors
Check Price on Amazon
HVAC Control Board
Check Price on Amazon
Wire Connectors
Check Price on Amazon
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When to Call a Professional
Call a licensed HVAC technician if you're uncomfortable working with electrical components, gas lines, or if the continuous flash persists after control board replacement. Also contact a professional if you discover damaged wiring, gas leaks, or if your unit is still under warranty.Frequently Asked Questions
What causes the Goodman HVAC continuous flash error?
The continuous flash error is caused by an internal fault in the control board, often due to power surges, component aging, moisture damage, or manufacturing defects. The control board's microprocessor can no longer properly manage system functions.
Can I reset the Goodman control board to clear the continuous flash?
No, the continuous flash error indicates a permanent control board failure that cannot be cleared by resetting. The only solution is to replace the faulty control board with a new compatible unit.
How much does a Goodman control board replacement cost?
Goodman control boards typically cost between $150-$400 for the part, plus $200-$500 for professional installation. The exact cost varies by model and local labor rates.
Is it safe to run my Goodman HVAC with a continuous flash error?
No, you should not operate the system with this error. The faulty control board cannot properly manage safety functions, which could lead to equipment damage, inefficient operation, or potential safety hazards.
How do I find the right replacement control board for my Goodman unit?
Locate your unit's model and serial number on the data plate, then match this information when ordering a replacement board. The control board part number is also usually printed on the existing board itself.