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Trouble shooting 39
OUTDOOR UNIT Error Method:
EEPROM Access Error
Detective Actuators:
Outdoor Unit Controller PCB circuit
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?
YES
Check Point 2 : Check Electrical Components
p Check connection of the connector. (loose connection or
incorrect wiring)
p Check any short or corrosion ion PCB.
OK
Check Point 3 : Replace Controller PCB
Replace Controller PCB, and set up the original
address.
Indicate or Display:
Outdoor Unit : LED1 Flash, LED5
Indoor Unit : Operation LED Lighted Continuously (Normal Operation)
ERROR CODE : E : 00
(No error display)
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.)
NO
Check Point 1-2 :
Check outside cause (Voltage drop or noise, etc.)
Instant drop ----- Check if there is a large load electric apparatus
Momentary power failure ----- Check if there is a defective
Noise ----- Check if there is any equipment causing harmonic
06-49
3 Times Blink
in the same circuit.
contact or leak current in the
power supply circuit.
wave near electric line (Neon bulb or electric
equipment that may cause harmonic wave).
Check the complete insulation of grounding.
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.
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Troubleshooting
