Failure code
| TROUBLE SHOOTING | FAILURE CODE | POSSIBLE REASONS | |
| (indoor unit) | (CHECK THE WIRED | ||
| REMOTE CONTROLLER) |
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| Abnormal communication |
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| Wrong connection, or use the wired controller |
| between wired controller and | 07 | * | |
| be disconnected, faulty PCB | |||
| indoor unit PCB | |||
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| Drainage system abnormal | 08 | * | The |
| position, or the float switch broken down or the | |||
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| float switch disconnected,or at wrong position | |
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| Indoor unit address repeated | 09 |
| Wrong setting of indoor unit address |
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| Abnormal communication | 0E |
| Faulty indoor unit PCB |
| between chip TMP/807 and chip |
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| TMP/846 |
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| TROUBLE SHOOTING | FAILURE CODE | POSSIBLE REASONS | |
| (CHECK THE WIRED | |||
| (ourdoor unit) | |||
| REMOTE CONTROLLER) |
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| Faulty defrost sensor Te | 14 | * | Sensor disconnected, or broken, or short circuit |
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| Sensor disconnected, or broken, or short circuit | ||
| Faulty sensor Tao | 15 | ||
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| Faulty sensor Ts |
| Sensor disconnected, or broken, or short circuit | |
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| Faulty sensor Td | 17 | Sensor disconnected, or broken, or short circuit | |
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| * | Over current of the system, or broken of the | |
| Input overcurrent | 19 | ||
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| current sensor,or malfunction with indoor or | ||
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| outdoor fan motors, or faulty PCB. |
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| High pressure switch is disconnected, or high |
| System high pressure | 1E | * | pressure switch worked, or Tc too high and |
| faulty outdoor fan motor when cooling, or | |||
| protection | |||
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| faulty indoor fan motors when heating, or | ||
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| refrigerant overabundance |
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| Low pressure switch is disconnected, or low |
| System low pressure | 1F | * | pressure switch worked, or Te too low and |
| faulty outdoor fan motors when heating, or | |||
| protection | |||
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| faulty indoor fan motor when cooling, or | ||
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| refrigerant shortage |
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| IPM protection | 20 |
| IPM over current, or short circuit, or IPM |
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| temperature too high, or IPM input voltage | ||
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| too low,or faulty SPDU(or ISPM). |
| EEPROM fault | 21 |
| Faulty outdoor unit PCB |
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| Over hot protection of |
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| Serious lack of refrigerant of the system, or |
| 22 |
| the ambient temperature too high, or PMVs be | |
| compressor |
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| blocked | |
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| Over hot protection of SPDU | 23 |
| Ambient tempreatrue too high, or outdoor fan |
| (or ISPM) |
| be blocked, or bad air circulation of outdoor unit | |
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| DC fan motor fault | 24 |
| Fan is blocked, or the terminal is disconnected |
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| from the PCB |
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