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Error Code
The E1 error code on your Hisense air conditioning unit indicates a communication failure between the indoor and outdoor units. This typically prevents the system from operating effectively.
Wiring issues between the indoor and outdoor units can interrupt communication.
A malfunction in the PCB (Printed Circuit Board) may disrupt communication between the units.
Voltage fluctuations or surges can interfere with system communication.
Turn off the air conditioner for 5–10 minutes, then turn it back on to reset communication.
Check for loose, damaged, or frayed wiring between the indoor and outdoor units.
A professional technician can check and replace the PCB if necessary.
