Carrier HVAC Error Code 17: How to Fix It

Q: What does Carrier error code 17 mean?

Carrier error code 17 means the system has detected a high pressure switch lockout. This indicates the refrigerant pressure in the high side of the system is too high, often due to dirty coils, a failed fan motor, or a blocked condenser.

Q: Can I reset Carrier error code 17 myself?

Yes, you can reset it by turning off the power to the outdoor unit at the breaker for at least 30 seconds, then turning it back on. However, if the underlying issue isn't fixed, the error will return.

Q: How much does it cost to fix Carrier error code 17?

DIY fixes like cleaning coils are free. If a fan motor or capacitor needs replacement, parts cost $50-$200. A professional service call typically ranges from $150-$400, plus parts and refrigerant work.

Q: Is it safe to run my AC with error code 17?

No, running the system in lockout can damage the compressor. The error is there to protect the system. Turn the system off and troubleshoot or call a professional.

Q: What tools do I need to diagnose Carrier error code 17?

You will need a multimeter to test the high pressure switch and capacitor, screwdrivers to access panels, and basic cleaning tools like a brush and hose.

Abstract

Carrier HVAC error code 17 indicates a high pressure switch lockout, which occurs when the system detects excessively high refrigerant pressure in the condenser coil. This is a serious issue that can damage the compressor if not resolved quickly. The error typically triggers due to dirty coils, blocked airflow, a faulty condenser fan motor, or a malfunctioning high pressure switch.