Indoor Unit Model Information Error Eeprom Access Abnormal - Fujitsu AOYG45LAT8 User Manual

Trouble shooting 8
INDOOR UNIT Error Method:
Indoor Unit Model Information Error
EEPROM Access Abnormal
Detective Actuators:
Indoor Unit
1. External cause
Forecast of Cause :
Check Point 1-1 : Reset power supply and operate
Does error indication show reappear?
YES
Check Point 2 :
Check connections condition in Controller PCB
Check all connectors.
(loose connector or incorrect wiring)
Check any shortage or corrosion on PCB.
OK
Check Point 3 : Replace Controller PCB
Change Controller PCB and execute the
check operation again.
Indicate or Display:
Outdoor Unit : E.5 U.1
Indoor Unit : Operation LED 3 times Flash, Timer LED 2 Times Flash,
Economy LED Continuous Flash.
Error Code : 3 2
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.
2. connections condition in Controller PCB
NO
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).
02-24
3. Controller PCB failure