59
TROUBLESHOOTING
E2
Description
Communication error between unit and user interface.
The unit shuts down.
The error code is displayed on the main PCB and user interface.
Possible causes
Communication wires between unit and user interface not connected properly.
Communication wiring X Y E terminals disconnected.
Loosened wiring inside the electric control box.
Interference from high voltage wires or other sources of electromagnetic radiation.
Damaged main PCB or electric control box communication terminals block.
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