44
Bryant
Control Board Internal Fault
Furnace LED shows code 44; unit may shut down unexpectedly or not respond to thermostat.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Failed microprocessor on control board, surge damage, internal relay failure
How to Fix / Troubleshooting
Safety first: Disconnect power before touching the control board or wiring.
- Power reset: Turn off power at the breaker for 5 minutes, then restore. Observe if the code returns immediately.
- Inspect board for damage: Look for burnt spots, bulging capacitors, or corrosion on the control board. Check for signs of water or condensate dripping onto the board.
- Verify proper grounding: Ensure the furnace cabinet is properly grounded and that the neutral and ground connections are tight.
If code 44 persists and other components test good, the Bryant control board will likely need replacement with an exact OEM part.
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Repair Difficulty
Hard
4/5
Required Part
Furnace Control Board
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