Error Code RED LED2 ON (solid)
Carrier 58MVP Error Code RED LED2 ON (solid): Microprocessor Malfunction
TL;DR
The microprocessor has malfunctioned. To reset: Put setup switch SW-1 in the ON position and jumper thermostat terminals R, W/W1, and Y/Y2 simultaneously with the door switch pushed in and power to the unit ON. Disconnect jumper and place setup switch in the OFF position. If LED2 reappears, replace the main control board. Disclaimer
This article is for informational purposes only and does not guarantee the accuracy or completeness of the information provided. Always turn off power and gas supply before attempting any repairs. If you smell gas, leave immediately and call your gas company. Consult a licensed HVAC technician for diagnosis and repair. Any actions taken based on this information are at your own risk. What Does Code RED LED2 ON (solid) Mean?
The microprocessor has malfunctioned. To reset: Put setup switch SW-1 in the ON position and jumper thermostat terminals R, W/W1, and Y/Y2 simultaneously with the door switch pushed in and power to the unit ON. Disconnect jumper and place setup switch in the OFF position. If LED2 reappears, replace the main control board.
Common Causes
When to Call a Professional
Contact a licensed HVAC technician if:
- Basic troubleshooting did not resolve the error
- You smell gas at any point during the process
- You are not comfortable working around gas lines or electrical components
- The unit needs a gas valve, control board, or motor replacement