AirStage AO54FJ, Service Manual

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Trouble shooting 3
INDOOR UNIT INDOOR UNIT Error Method: Error Method:
MODEL INFORMATION ABNORMAL
Indicate or Display: Indicate or Display:
Indoor Unit : Operation LED Flash Flash , , Timer LED Flash Flash
Swing LED OFF OFF
Outdoor Unit : LED1 Flash, LED6
1 8TIMES Blink(Indoor Unit address)
ERROR CODE : E:02 E:02
Detective Actuators: Detective Actuators:
Circuitry in indoor unit Control PCB
Detective details: Detective details:
When power is turned on, EEPROM read ERROR has been occurred
(2times matching read Test is failed for 3 times in a row),or the model
information that was read in from EEPROM has an apparent error.
Model information, which is memorized in EEPROM is recovered normally.
Forecast of Cause Forecast of Cause : 1 .Power supply circuit (Voltage drop / Noise) 2.Indoor unit electrical parts defective
Check Point 1 : Check Power supply Check Point 1 : Check Power supply
Check external cause (Power supply)
Instant Drop Check if there is an electric equipment with a large load in the same circuit.
Instant Power Outage Check if there is a defective contact or leakage in the power supply.
Noise Check if there is any equipment that cause the harmonic wave near the power line.
(Neon tube or Electric equipment that harmonic wave Check that the grounding is completely insulated.)
Check Point 2 : Check Point 2 : Indoor unit electrical parts defective Indoor unit electrical parts defective
Check connection / removal / incorrect wiring of all the connectors.
Check if short mark or corrosion is on PCB
Replace Control PCB and set up the original address,then check the
normal operation.
06-08