Carrier HVAC Error Code 85: How to Fix It

Q: Can I drive my AC with error code 85?

No, operating the system with a stuck EEV can cause further damage to the compressor or other components. It's best to fix the issue before running the system.

Q: How much does it cost to fix error 85?

If you DIY, the EEV part costs around $50-$150. A professional repair including labor and refrigerant can range from $300 to $800.

Q: Is error 85 common in Carrier HVAC systems?

Yes, it's a known issue, especially in systems with electronic expansion valves. It can be caused by electrical surges, wear, or debris in the refrigerant.

Q: How do I prevent error 85 in the future?

Regular maintenance, such as cleaning the coils and checking electrical connections, can help. Installing a surge protector for the system may also prevent electrical damage.

Q: Will resetting the system clear the error?

A temporary reset by turning off the power for 5 minutes may clear the error, but it will return if the underlying issue is not fixed.

Abstract

Error code 85 on your Carrier HVAC system indicates that the electronic expansion valve (EEV) is stuck closed, preventing refrigerant flow. This can cause your system to blow warm air or not cool effectively. Follow these steps to diagnose and fix the problem, which may involve checking electrical connections, testing the valve, or replacing it.