E40 - Service valve (gas side) closing operation

What does E40 mean?

The remote control displays E40 (while the indoor unit's green LED keeps flashing and red LED stays off). This indicates that the service valve on the gas side is closed.

• The service valve (gas side) is closed, preventing proper refrigerant flow. This is typically an installation or maintenance issue.

Click steps to track your progress.

1. 1

   Turn off the air conditioner and refrain from operating it.

2. 2

   This issue requires a trained technician to inspect and open the service valve.

3. 3

   Contact a service technician immediately to avoid potential damage to the compressor.