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2.3 E2: Communica on error between indoor and outdoor unit (For all models)
2.3.1 Digital display output
E2
2.3.2 Descrip on
•
Communica on error between indoor and outdoor unit.
•
The system stops running.
•
Error code is displayed on the outdoor unit PCB.
2.3.3 Trigger / recover condi on
•
Trigger condi on: Indoor units and the outdoor unit cannot communicate for 2 minutes a er the system is powered on
for 20 minutes.
Recover condi on: Communica on go back to normal.
•
Reset method: Resume automa cally.
•
2.3.4 Possible causes
•
Communica on wires between indoor and outdoor units not connected properly.
Indoor unit power supply abnormal.
•
Loosened wiring within electric control box.
•
Interference from high voltage wires or other sources of electromagne c radia on.
•
Communica on wire too long.
•
Damaged main PCB or electric control box communica on terminals block.
•
•
Communica on wire break or poor contact for reasons (such as rat beat, or bond and connection).
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