Carrier HVAC Error Code 47: How to Fix It

Q: What does Carrier HVAC error code 47 mean?

Carrier error code 47 indicates that the compressor is not running. This could be due to a faulty run capacitor, a defective contactor, a tripped high-pressure switch, or a bad thermostat.

Q: Can I bypass the high-pressure switch to fix error code 47?

No, never bypass a safety switch. If the high-pressure switch is tripped, it means there's an underlying issue like a dirty condenser coil or a refrigerant overcharge. Bypassing can cause serious damage or injury.

Q: How do I test a run capacitor on my Carrier AC?

Disconnect power and discharge the capacitor. Set your multimeter to capacitance mode and place probes on the capacitor terminals. Compare the reading to the rated value (e.g., 45 µF). If it's more than 5% off, replace it.

Q: What does a bad contactor look like?

A bad contactor may have visible burn marks, pitting, or melting on the contacts. It may also be stuck in the open or closed position. If the contactor doesn't click when the thermostat calls for cooling, it may be faulty.

Q: Is error code 47 covered by warranty?

If your Carrier system is still under warranty, most parts like the capacitor, contactor, or compressor may be covered. However, labor costs may not be included. Check your warranty documentation or contact Carrier support.

Abstract

Error code 47 on your Carrier HVAC system means the compressor is not running. This can be caused by a faulty run capacitor, a defective contactor, a bad thermostat, or a tripped high-pressure switch. This guide will help you diagnose and fix the issue step by step.