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Current detect circuit system alarm
Is wiring connector on
inverter P .C. board normal?
Check inverter P .C. board.
TE1 sensor open/short
TE1 sensor open/short has been detected. Confirm sensor is not disconnected
(TE1 sensor: CN505), confirm circuit and resistance value characteristics of sensor.
When the sensors are normal, replace outdoor P .C. board.
Extension IC, EEPROM alarm
Is there an irregularity of
outdoor unit power source?
14
Check interface P .C. board.
Troubleshooting
Diagnostic Procedure for Check Code
Check code
[17]
No
Yes
Check code
[18]
Check code
[1C]
Yes
No
Operation cause
1. Defective wiring of inverter P .C. board
2. Defective inverter P .C. board
Operation cause
TA sensor open/short
Operation cause
1. Outdoor unit power source error
2. Interface P .C. board error
Check noise interference from outside, etc.
62
Modify connection of wiring
Check power source voltage.
Modify power source line.
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