(1)Self-diagnostics Lamps
INDOOR UNIT
(1) OPERATION lamp
(2) TIMER lamp
(3) QUIET lamp
ION lamp
OPERATION button
REMOTE CONTROL receiver
Since the indications cover various units, the corresponding parts listed below may not be present in some models.
Indication on indoor unit | .... OFF |
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Quiet | Timer | Operation | Code | Diagnostics items |
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| Diagnostics contents |
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(3) | (2) | (1) |
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| S01 | Room temperature sensor failure | (1) | Sensor open circuit or short circuit |
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| (2) | Contact failure at connector or open circuit at terminal crimping location | |||||||||||
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| S02 | Indoor heat exchanger sensor failure | |||||||||||||
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| (3) | Indoor/outdoor PCboard failure |
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| S03 | Humidity sensor failure |
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| S04 | Compressor temperature sensor failure | (1) | Sensor open circuit or short circuit |
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| (2) | Contact failure at connector or open circuit at terminal crimping location | |||||||||||
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| S05 | Outdoor heat exchanger sensor failure | |||||||||||||
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| (3) | Outdoor PCboard failure |
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| S06 | Outdoor air temperature sensor failure |
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| S07 | Outdoor electrical current detection | Outdoor PCboard failure |
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| Indoor/outdoor communications failure | (1) | (2) AC power failure | (3) Blown fuse | (4) Power Relay failure | |||||||||
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| E01 | (5) | Indoor or outdoor PCboard failure | (6) Outdoor Fan Motor failure (7) Reactor failure | |||||||||||
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| (serial communications) | (8) | (9) Overload Relay failure | (10) Magnetic Coil failure | |||||||||||
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| E02 | • HIC circuit failure | (1) | HIC or power Tr failure (2) Outdoor fan does not turn. | (3) Instantaneous power outage | ||||||||||
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| (4) | Service valve not opened. | (5) Outdoor fan blocked. | (6) Continuous overload operation | |||||||||||
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| • Power Tr (transistor) circuit failure | ||||||||||||||
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| (7) | Compressor failure | (8) Outdoor PCboard failure |
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| E03 | Outdoor unit external ROM (OTP data) | (1) | External ROM data failure |
| (2) Outdoor PCboard failure |
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| failure |
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| E04 | Peak current | (1) | Instantaneous power outage | (2) HIC or power transistor failure | ||||||||||
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| (3) | Outdoor PCboard failure |
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| E05 | PAM circuit failure | (1) | Outdoor PCboard failure | (2) Outdoor power supply voltage failure | ||||||||||
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| Active circuit failure | ||||||||||||||
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| E06 | Compressor discharge overheat | (1) Electric expansion valve failure | (2) Capillaries choked | (3) Shortage of refrigerant | ||||||||||
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| prevention activated. | (4) Continuous overload operation | (5) Outdoor fan does not rotate | (6) Outdoor PCboard failure | |||||||||||
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| E07 | Indoor fan operating failure | (1) | Fan motor failure | (2) Contact failure at connector |
| (3) Indoor PCboard failure | ||||||||
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| E08 | (1) |
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| Indoor | (2) | Outdoor PCboard failure |
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| E09 | (1) | Service valve not opened. |
| (2) Shortage of refrigerant |
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| E10 | DC compressor drive circuit failure | (1) | Open phase | (2) Outdoor PCboard failure |
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| E11 | Outdoor fan operating failure | (1) | Fan motor failure | (2) Contact failure at connector |
| (3) Outdoor PCboard failure | ||||||||
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| Outdoor system communications failure | (1) | (2) Blown fuse | (3) Power Relay failure |
| (4) Outdoor PCboard failure | ||||||||
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| E12 | OLR operation | (5) | Compressor failure |
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| Outdoor power supply open phase |
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| Outdoor coil freezing | * See detailed flowchart in this section. |
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| E13 | (1) | Indoor fan system failure | (2) Shortage of refrigerant | (3) | ||||||||||
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43
