E2 — MA communication send error (MA Remote controller only)

What does E2 mean?

This error, specific to the MA remote controller, indicates a problem sending communication data to the air conditioning system. This could be a repeated or different aspect of E1, preventing commands or settings from being transmitted.

• Wiring issue to the MA remote controller (loose or damaged).
• Faulty MA remote controller hardware.
• Electromagnetic interference affecting signal transmission.

Click steps to track your progress.

1. 1

   Turn off the main power to the outdoor unit at the circuit breaker.

2. 2

   Check the wiring connections to the MA remote controller for any looseness, damage, or improper installation.

3. 3

   Ensure the MA remote controller is not subject to strong electromagnetic interference from other devices.

4. 4

   Power cycle the system by turning off the main breaker for a few minutes, then restart.

5. 5

   If the error persists, the MA remote controller may need to be inspected or replaced by a technician.