E1 n 63 (FJM Indoor) — Option code setting error

What does E1 n 63 mean?

The FJM indoor unit displays E1 n 63, indicating an error with the option code settings configured for the indoor unit. Option codes define specific features and operational parameters for the unit.

• Incorrect option code entry during installation or setup
• Corrupted option code data
• Faulty indoor PCB

Click steps to track your progress.

1. 1

   Turn off the power to the FJM indoor unit at the circuit breaker.

2. 2

   Consult the installation or service manual to verify the correct option code for your specific indoor unit model and system configuration.

3. 3

   If possible, re-enter the correct option code using the remote control or service tool.

4. 4

   Restore power. If the error persists, contact a qualified technician for configuration review.