Trouble shooting 8
INDOOR UNIT Error Method:
Indoor Unit Model Information Error
EEPROM Access Abnormal
Indicate or Display:
Indoor Unit : Operation LED 3 times Flash, Timer LED 2 Times Flash,
Economy LED Continuous Flash.
Outdoor Unit : E.5 U.1
Error Code : 3 2
Detective Actuators:
Indoor Unit
Detective details:
3 continuous failure of read test of EEPROM at power on, or apparent model
information error from EEPROM. Also, error on model information upon model
information test of EEPROM, or Model information of EEPROM not possible to
recover.
Forecast of Cause : 1. External cause 2. connections condition in Controller PCB 3. Controller PCB failure
Check Point 3 : Replace Controller PCB
Change Controller PCB and execute the
check operation again.
Check Point 1-1 : Reset power supply and operate
YES
NO
Does error indication show reappear?
OK
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).
Check Point 2 :
Check connections condition in Controller PCB
Check all connectors.
(loose connector or incorrect wiring)
Check any shortage or corrosion on PCB.
02-24
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