Trouble shooting 69 EJ1. 1
RB UNIT Error Method:
RB Unit EEPROM Access Abnormal
Indicate or Display:
Indoor Unit : Operation LED 14 times Flash, Timer LED 1 Times Flash,
Filter LED Continuous Flash.
Outdoor Unit : E. 5 U.1
Error Code : J 1
RB Unit : Power LED ON, Error LED Continuous Flash
Detective Actuators:
RB Unit Controller PCB
Detective details:
When the EEPROM Lead Test faild 3 times at the testing process
Check Point 3 : Replace Controller PCB
Forecast of Cause : 1. Outside cause 2. Defective connection of electric component 3. Controller PCB defectve
Check Point 1 : Reset Power Supply
Does Error LED indication show again?
Change Controller PCB and Set up the original setting
Check any shortage or corrision on PCB.
Check Point 2 : Check RB Unit components
Check all connectors (Lose connection or incorrect wiring)
Check Point 1-2 :
Check outside cause (Voltage drop or noise, etc.)
Instant drop ----- Check if there is a large load electric apparatus
in the same circuit.
Momentary power failure ----- Check if there is a defective
contact or leak current in the
power supply circuit.
Noise ----- Check if there is any equipment causing harmonic
wave near electric line (Neon bulb or electric
equipment that may cause harmonic wave).
Check the complete insulation of grounding.
NO
04-78
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