Midea MC-SU30-RN1L

Aqua Tempo Super II
201709 53
Part
4 - Diagnosis and Troubleshooting
4.4 E2 Troubleshooting
Digital display output 4.4.1
Description 4.4.2
 Communication error between outdoor unit and user interface.
 All units stop running.
 Error code is displayed on main PCB and user interface.
Possible causes 4.4.3
 Communication wires between outdoor unit and user interface not connected properly.
 Communication wiring P Q E terminals misconnected.
 Loosened wiring within electric control box.
 Interference from high voltage wires or other sources of electromagnetic radiation.
 Communication wire too long.
 Damaged main PCB, user interface or electric control box communication terminals block.