Possible cause of malfunction |
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| Alarm | ||
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| message | |||
Serial | Improper setting. | This alarm message shows when the indoor unit for | L02 | ||
| is not connected to the outdoor unit. |
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errors |
| Duplication of main indoor unit address setting in group control. | <L03> | ||
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| Duplication of outdoor R.C. address setting. | L04 | |||
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| There are 2 or more indoor units | Priority set remote controller | L05 | |
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| controllers which have operation |
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| L06 | |||
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| mode priority in 1 refrigerant circuit. | |||
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| Group control wiring is connected to individual control indoor unit. | L07 | ||
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| Indoor unit address is not set. |
| L08 | |
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| Capacity code of indoor unit is not set. | <<L09>> | ||
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| Capacity code of outdoor unit is not set. | L10 | ||
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| L17 | |||
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| of refrigerant. |
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| L18 | ||
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Activation of | Protective device in indoor unit | Thermal protector in indoor unit fan motor is activated. | <<P01>> | ||
protective | is activated. |
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Improper wiring connections of ceiling panel. | <<P09>> | ||||
device |
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| Float switch is activated. |
| <<P10>> | ||
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| Operation of protective function of fan inverter. | P12 | ||
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| O2 sensor (detects low oxygen level) activated. | P14 | ||
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| Protective device in outdoor unit | Compressor thermal protector is activated. | P02 | ||
| is activated. | Power supply voltage is unusual. (The voltage is more than 260 V | |||
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| or less than 160 V between L1 and L2 phase.) |
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| Incorrect discharge temperature. |
| P03 | |
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| High pressure switch is activated. |
| P04 | |
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| Detective phase | P05 | ||
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| Compressor running failure resulting from missing phase in the | P16 | ||
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| compressor wiring, etc. (Start failure not caused by IPM or no gas.) | |||
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| Outdoor unit fan motor is unusual. |
| P22 | |
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| Overcurrent at time of compressor runs more than 80Hz (DCCT | P26 | ||
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| secondary current or ACCT primary current is detected at a time | |||
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| other than when IPM has tripped.) |
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| IPM trip (IPM current or temperature) | H31 | ||
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| Inverter for compressor is unusual. (DC compressor does not | P29 | ||
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Thermistor | Indoor thermistor is either open | Indoor coil temp. sensor (E1) |
| <<F01>> | |
fault | or damaged. |
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Indoor coil temp. sensor (E2) |
| <<F02>> | |||
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| Indoor coil temp. sensor (E3) |
| <<F03>> | |
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| Indoor suction air (room) temp. sensor (TA) | <<F10>> | ||
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| Indoor discharge air temp. sensor (BL) | <<F11>> | ||
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| Outdoor thermistor is either | Compressor discharge sensor (TD) |
| F04 | |
| open or damaged. |
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| Outdoor No. 1 coil liquid temp. sensor (C1) | F07 | |||
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| Outdoor air temp. sensor (TO) |
| F08 | |
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| Compressor suction port temperature sensor (TS) | F12 | ||
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| High pressure sensor |
| F16 | |
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EEPROM on indoor unit PCB failure |
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| F29 | ||
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Protective | Protective device for compressor | EEPROM on the outdoor unit PCB is a failure. | F31 | ||
device for | No. 1 is activated. | ||||
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compressor is |
| Current is not detected when comp. is ON. | H03 | ||
activated |
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