Self-diagnostics Lamps
OPERATION 
(1) OPERATION lamp
TIMER 
(2) TIMER lamp
QUIET 
(3) QUIET lamp
OPERATION
<NOTE> | Since the indications cover various units, corresponding parts listed below may not be |
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Indication on indoor unit | .... OFF |
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| .... Blinking | .... ON (Illuminated) | ||||||||
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Quiet | Timer | Operation | Code | Diagnostics item |
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(3) | (2) | (1) |
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| S01 | Room temperature sensor failure | 1Sensor open circuit or short circuit |
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| 2Contact failure at connector or open circuit at terminal crimping location | ||||||||
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| S02 | Indoor heat exchanger sensor failure | |||||||||
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| 3Indoor/outdoor circuit board failure |
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| S03 | Humidity sensor failure |
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| S04 | Compressor temperature sensor failure | 1Sensor open circuit or short circuit |
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| S05 | Outdoor heat exchanger sensor failure | 2Contact failure at connector or open circuit at terminal crimping location | ||||||||
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| 3Outdoor circuit board failure |
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| S06 | Outdoor air temperature sensor failure |
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| S07 | Outdoor electrical current detection | Outdoor circuit board failure |
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| E01 | Indoor/outdoor communications failure | 3Blown fuse | 4Power relay failure | |||||||
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| (serial communications) | 5Indoor or outdoor circuit board failure |
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| E02 | • HIC circuit failure | 1HIC or power Tr failure 2Outdoor fan does not turn. 3Instantaneous power outage | ||||||||
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| 4Service valve not opened. | 5Outdoor fan blocked. | 6Continuous overload operation | ||||||||
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| • Power Tr (transistor) circuit failure | ||||||||||
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| 7Compressor failure 8Outdoor circuit board failure |
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| E03 | Outdoor unit external ROM (OTP data) | 1External ROM data failure |
| 2Outdoor circuit board failure | ||||||
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| failure |
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| E04 | Peak current | 1Instantaneous power outage | 2HIC or power transistor failure | |||||||
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| 3Outdoor circuit board failure |
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| E05 | • PAM circuit failure | 1Outdoor circuit board failure 2Outdoor power supply voltage failure | ||||||||
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| • Active circuit failure | ||||||||||
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| E06 | Compressor discharge overheat | 1Electric expansion valve failure | 2Capillaries choked | 3Shortage of refrigerant | ||||||
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| prevention activated. | 4Continuous overload operation | 5Outdoor fan does not rotate 6Outdoor circuit board failure | ||||||||
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| E07 | Indoor fan operating failure | 1Fan motor failure 2Contact failure at connector |
| 3Indoor circuit board failure | ||||||
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| E08 | • |
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| • Indoor | 2Outdoor circuit board failure |
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| E09 | 1Service valve not opened. |
| 2Shortage of refrigerant | |||||||
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| E10 | DC compressor drive circuit failure | 1Open phase 2Outdoor circuit board failure |
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| E11 | Outdoor fan operating failure | 1Fan motor failure 2Contact failure at connector |
| 3Outdoor circuit board failure | ||||||
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| • Outdoor system communications failure |
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| E12 | • Outdoor | 2Blown fuse | 3Power relay failure | 4Open phase | ||||||
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| • OLR operation | ||||||||||
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| 5Outdoor circuit board failure | 6Compressor failure |
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| • Outdoor power supply open phase |
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| • Outdoor coil freezing |
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| E13 | 1Indoor fan system failure | 2Shortage of refrigerant | ||||||||
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