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15.2 Self Diagnosis Function (CU-3E18PBE and CU-4E23PBE)
The display screen of wireless remote control unit and the self-diagnosis LEDs (green) on the outdoor printed
circuit board in the outdoor unit can be used to identify the location of the problem.
Refer to the table below to identify and solve the cause of the problem, and then re-start the air conditioner
system.
If the problem is solved and operation returns to normal.
LED 1 illuminates and others LED are off.
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