E27 — Oil Temperature Over High Protection (Toil)

What does E27 mean?

This error indicates that the compressor oil temperature (Toil) has exceeded 110°C, triggering an over-high protection. If this occurs 3 times in an hour, the failure will be confirmed as unresumable.

• Insufficient oil level or poor oil quality in the compressor.
• Overheating of the compressor due to heavy load or poor ventilation.
• A faulty oil temperature sensor providing incorrect readings.

Click steps to track your progress.

1. 1

   Turn off the unit and allow it to cool down naturally.

2. 2

   Check for any obstructions around the outdoor unit that might restrict airflow.

3. 3

   Restore power and restart the unit. If the error persists or recurs frequently, contact a qualified service technician to check oil levels and compressor operation.