Web Reference: If your Gree Air Conditioner is showing an E1 error code, it means there is a High-Pressure Protection (HPP) issue. This error occurs when the outdoor unit detects high pressure for more than 3 seconds. As a safety measure, the AC shuts down to prevent damage. Use our innovative tool and in-depth videos to troubleshoot error codes. Find meanings, causes, and troubleshooting solutions for all Gree fault codes including E1, E2, E6.
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