EEPROM access error
Indoor Unit : Operation LED 13times Flash, Timer LED 2times Flash,
Economy LED Flashing (0.1s ON / 0.1s OFF)
Outdoor Unit : E. J2. U
Branch Box : LED402 1time Flash, LED403/ 404/ 405 Unlit
Error Code : J2
Trouble shooting 40
Indicate or Display:
Branch Box Error Method:
Branch Box Controller PCB
Detective Actuators:
Detective details:
Forecast of Cause :
Check Point 3 : Replace Controller PCB
YES
NO
OK
Check Point 2 : Check connections condition.
1. External cause 2. Defective for connection in controller unit 3. Controller PCB failure
Check Point 1-1 : Reset power supply and operate
Does error indication show reappear?
Check all connectors.
(loose connector or incorrect wiring)
Check any shortage or corrosion on PCB.
If Check Point 1, 2 do not improve the symptom,
replace Controller PCB.
When power is on and the access to EEPROM failed.
Check Point 1-2 : Check external cause such as noise
Check if the ground connection is proper.
Check if there is any equipment that causes harmonic wave
near the power cable (Neon light bulb or any electronic
equipment which causes harmonic wave).
02-56
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