Outdoor Unit Eeprom Access Error - Fujitsu Airstage VR-II Series Service Manual

Trouble shooting 28
OUTDOOR UNIT Error Method:

Outdoor Unit EEPROM Access Error

Detective Actuators:
Outdoor unit Main PCB
Forecast of Cause : 1. Noise, momentary open, voltage drop
Check Point 1-1 :
Turn the power on again
Error displayed again?
YES
Check Point 2 : Replace Main PCB
Change Main PCB and set up the original address.
Indicate or Display:
E62. 3
Outdoor Unit : E. 6 2. 3
Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash,
Error Code : 9 U / 6 2
Detective details:
Access to EEPROM failed due to some cause after outdoor unit started.
Check Point 1-2 : Noise, momentary open, voltage drop
NO
Check if temporary voltage drop was not generated.
Check if momentary open was not generated.
Check if ground is connection correctly or there are no related cables near the
power line.
04-37
Filter LED Continuous Flash.
2. Main PCB defective