Fujitsu Airstage V series - Troubleshooting 39 - OUTDOOR UNIT Error Method: EEPROM Access Error

Trouble shooting 39
OUTDOOR UNIT Error Method:
EEPROM Access Error
Indicate or Display:
Outdoor Unit : LED1 Flash, LED5 3 Times Blink
Indoor Unit : Operation LED Lighted Continuously (Normal Operation)
ERROR CODE : E : 00
Detective Actuators:
Outdoor Unit Controller PCB circuit
Detective details:
Upon Outdoor Unit is started up, Access to EEPROM has been failed due to
some cause such as outside cause or component failure, etc.)
Note : EEPROM
EEPROM(Electronically Erasable and
Programmable Read Only Memory) is a non-
volatile memory which keeps memorized
information even if power is turned off. It can
change the contents electronically.
To change the contents, it uses higher
voltage than normal, and it can not change a
partial contents. (Rewriting shall be done
upon erasing the all contents.)
There is a limit in a number of rewriting.
Check Point 3 : Replace Controller PCB
Replace Controller PCB, and set up the original
address.
Check Point 2 : Check Electrical Components
YES
NO
p Check connection of the connector. (loose connection or
incorrect wiring)
p Check any short or corrosion ion PCB.
OK
Forecast of Cause : 1. Outside cause 2. Electrical Component connection failure 3. Controller PCB failure
Check Point 1-1 : Restart Operation
Does LED error indication reappear?
Check Point 1-2 :
Check outside cause (Voltage drop or noise, etc.)
Instant drop ----- Check if there is a large load electric apparatus
in the same circuit.
Momentary power failure ----- Check if there is a defective
contact or leak current in the
power supply circuit.
Noise ----- Check if there is any equipment causing harmonic
wave near electric line (Neon bulb or electric
equipment that may cause harmonic wave).
Check the complete insulation of grounding.
06-49
(No error display)