Eeprom Access Error - Fujitsu ASU18RLF Service Instructions Manual

Trouble shooting 15
OUTDOOR UNIT Error Method:

EEPROM Access Error

Detective Actuators:
Outdoor unit Main PCB
Forecast of Cause:
1. External cause
Test 1-1 : Turn the power on again?
・
Error displayed again?
YES
Test 2 : Replace Main PCB
If Test 1 do not improve the symptom, replace Main PCB(Outdoor unit).
(SERVICE PARTS INFORMATION 10)
Indicate of Display:
Indoor Unit
Operation lamp : - time Flash
Timer lamp
ERROR CODE : [E : --]
Detective details:
When the check run if can not write data to the EEPROM.
2. Main PCB defective
NO
02-20
Outdoor Unit
A
: - time Flash
6
: Light ON
Test 1-2 : External cause
Check if temporary voltage drop was not generated.
Check if temporary open was not generated.
Check if ground is connected correctly or
there are no related cables near the power line.
Monitor
B C D E F
2
: Light OFF n : n time blinking