Air-Con Multi Split
From Technical Support Wiki
As we transition to the more efficient 22-21 SEER Multi Splits, please pardon our dust as we rebuild this wiki page to reflect our new units. All information on the 16 SEER units are now under the Legacy Support menu. Thank you.
This is the support page for the 22-21 SEER Air-Con Multi Split line. If you're looking for our 16 SEER models please visit the Air-Con Multi Split 16 SEER page.
Indoor Units (Wall Mount Type)
Indoor Units (Cassette Type)
Indoor Units (Ducted Type)
Indoor Units (Floor & Ceiling Type)
Outdoor Units
Possible Combinations
These are the recommended indoor-outdoor unit combinations.
| Zones | Outdoor Unit | Indoor Units | Indoor Units | Indoor Units | Indoor Units | Indoor Units | Indoor Units | Indoor Units | Indoor Units |
| Dual Zone | A16CM4H4R18 | A16EM4H4R09 | A16EM4H4R09 | A16EM4H4R18 | |||||
| A16EM4H4R09 | A16EM4H4R12 | ||||||||
| Tri Zone | A16CM4H4R24 | A16EM4H4R09 | A16EM4H4R09 | A16EM4H4R12 | A16EM4H4R09 | A16EM4H4R18 | |||
| A16EM4H4R09 | A16EM4H4R09 | A16EM4H4R12 | A16EM4H4R12 | ||||||
| A16EM4H4R09 | |||||||||
| Quad Zone |
|
A16EM4H4R09 | A16EM4H4R12 | A16EM4H4R12 | A16EM4H4R09 | A16EM4H4R18 | |||
| A16EM4H4R09 | A16EM4H4R12 | A16EM4H4R12 | A16EM4H4R09 | A16EM4H4R18 | |||||
| A16EM4H4R09 | A16EM4H4R12 | A16EM4H4R09 | A16EM4H4R18 | ||||||
| A16EM4H4R09 | |||||||||
| Quint Zone | A16CM4H4R42 | A16EM4H4R09 | A16EM4H4R12 | A16EM4H4R09 | A16EM4H4R09 | A16EM4H4R09 | A16EM4H4R12 | A16EM4H4R18 | A16EM4H4R09 |
| A16EM4H4R09 | A16EM4H4R12 | A16EM4H4R09 | A16EM4H4R09 | A16EM4H4R09 | A16EM4H4R12 | A16EM4H4R18 | A16EM4H4R12 | ||
| A16EM4H4R09 | A16EM4H4R12 | A16EM4H4R12 | A16EM4H4R12 | A16EM4H4R09 | A16EM4H4R12 | A16EM4H4R12 | A16EM4H4R18 | ||
| A16EM4H4R09 | A16EM4H4R12 | A16EM4H4R18 | A16EM4H4R12 | A16EM4H4R12 | A16EM4H4R09 | ||||
| A16EM4H4R09 |
- Note: Each indoor unit combination is viewed as a column.
- Note: Both quad zone outdoor units are capable of the same combinations but make your judgement on the correct one to use based on room size.
- Note: There are more possible combinations than those listed above. Please use proper capacity judgment when making multi-split combinations.
Error Codes
| Error Item | Outdoor Unit 88 Display | Indicating LED Flashing Times | 88 Display | Error Type | ||
| Running LED | Cooling LED | Heating LED | ||||
| High Pressure Protection | E1 | Flash once | / | / | E1 | Outdoor |
| Shutdown for Whole Unit Anti-Freeze Protection | E2 | Flash twice | / | / | E2 | System Error |
| Low Pressure Protection | E3 | Flash 3 times | / | / | E3 | Outdoor |
| High Discharge Temp Protection | E4 | Flash 4 times | / | / | E4 | Outdoor |
| Communication Error | E6 | Flash 6 times | / | / | E6 | Outdoor & Indoor |
| Indoor Unit Water Full Error | E9 | Flash 9 times | / | / | E9 | Indoor |
| Refrigerant Recovery Mode | Fo | Flash once | Flash once | / | Fo | Special Mode |
| Outdoor Ambient Temp Sensor Error | F3 | / | Flash 3 times | / | F3 | Outdoor |
| Outdoor Mid-Coil Temp Sensor Error | F4 | / | Flash 4 times | / | F4 | Outdoor |
| Outdoor Discharge Air Temp Sensor Error | F5 | / | Flash 5 times | / | F5 | Outdoor |
| Oil Return for Cooling | F7 | / | Flash 7 times | / | F7 | Special Mode |
| Forced Defrosting | H1 | Quick Flashing | / | / | H1 | Special Mode |
| Oil Return for Heating or Defrosting | H1 | / | / | Flash once | H1 | Special Mode |
| Compressor Overheat Protection | H3 | / | / | Flash 3 times | H3 | Drive Error |
| IPM Protection | H5 | / | / | Flash 5 times | H5 | Drive Error |
| Compressor Desynchronizing | H7 | / | / | Flash 7 times | H7 | Drive Error |
| PFC Error | Hc | / | / | Flash 6 times | Hc | Drive Error |
| Startup Failure | Lc | / | / | Flash 11 times | Lc | Drive Error |
| DC Fan Motor Error | LA | Flash 24 times | / | / | LA | Outdoor |
| Phase Loss | Ld | / | / | / | Ld | Drive Error |
| Compressor Stalling | LE | / | / | / | LE | Drive Error |
| Over-Speed | LF | / | / | / | LF | Drive Error |
| IPM Reset | P0 | / | / | / | P0 | Drive Error |
| Compressor Current Protection | P5 | / | / | Flash 15 times | P5 | Drive Error |
| Communication Error between the Inverter Drive and the Main Controller | P6 | Flash 16 times | / | / | P6 | Drive Error |
| Radiator Temp Sensor Error | P7 | / | / | Flash 18 times | P7 | Drive Error |
| Radiator Overheat | P8 | / | / | Flash 19 times | P8 | Drive Error |
| AC Contactor Protection | P9 | / | / | / | P9 | Drive Error |
| Sensor Connection Protection | Pd | / | / | / | Pd | Drive Error |
| Over Voltage Protection | PH | / | Flash 11 times | / | PH | Drive Error |
| Low Voltage Protection | PL | / | / | Flash 21 times | PL | Drive Error |
| Temp Drift Protection | PE | / | / | / | PE | Drive Error |
| Drive Board Ambient Temp Sensor Error | PF | / | / | / | PF | Drive Error |
| Charging Circuit Error | PU | / | / | Flash 17 times | PU | Drive Error |
| Unit n Communication Error | * | Flash 6 times | / | / | E6 | Indoor |
| Unit n Indoor Pipe Midway Temperature Sensor Error | * | / | Flash twice | / | E2 | Indoor |
| Indoor Evaporator Temp Sensor Short/Open Circuit | * | / | Flash twice | / | F2 | Indoor |
| (Air Valve) Unit n Indoor Unit Pipe Outlet Temperature Sensor Error | * | / | Flash 22 times | / | b7 | Indoor |
| (Liquid Valve) Unit n Indoor Unit Pipe Outlet Temperature Sensor Error | * | / | Flash 19 times | / | b5 | Indoor |
| Unit n Mode Conflict | * | / | Flash once | / | F1 | Indoor |
| Mode Conflict | * | Flash 7 times | / | / | E7 | Indoor |
Indoor Unit (*) Error Description
| Error Code | Error Description |
| 11 | Unit A Communication Error |
| 21 | Unit B Communication Error |
| 31 | Unit C Communication Error |
| 41 | Unit D Communication Error |
| 51 | Unit E Communication Error |
| 12 | Unit A Indoor Unit Pipe Midway Temperature Sensor Error |
| 22 | Unit B Indoor Unit Pipe Midway Temperature Sensor Error |
| 32 | Unit C Indoor Unit Pipe Midway Temperature Sensor Error |
| 42 | Unit D Indoor Unit Pipe Midway Temperature Sensor Error |
| 52 | Unit E Indoor Unit Pipe Midway Temperature Sensor Error |
| 13 | Unit A Indoor Unit Pipe Outlet Temperature Sensor Error |
| 23 | Unit B Indoor Unit Pipe Outlet Temperature Sensor Error |
| 33 | Unit C Indoor Unit Pipe Outlet Temperature Sensor Error |
| 43 | Unit D Indoor Unit Pipe Outlet Temperature Sensor Error |
| E3 | Unit E Indoor Unit Pipe Outlet Temperature Sensor Error |
| 14 | Unit A Indoor Unit Pipe Inlet Temperature Sensor Error |
| 24 | Unit B Indoor Unit Pipe Inlet Temperature Sensor Error |
| 34 | Unit C Indoor Unit Pipe Inlet Temperature Sensor Error |
| 44 | Unit D Indoor Unit Pipe Inlet Temperature Sensor Error |
| 54 | Unit E Indoor Unit Pipe Inlet Temperature Sensor Error |
| 15 | Unit A Indoor Ambient Temperature Sensor Error |
| 25 | Unit B Indoor Ambient Temperature Sensor Error |
| 35 | Unit C Indoor Ambient Temperature Sensor Error |
| 45 | Unit D Indoor Ambient Temperature Sensor Error |
| 55 | Unit E Indoor Ambient Temperature Sensor Error |
| 16 | Unit A Mode Conflict |
| 26 | Unit B Mode Conflict |
| 36 | Unit C Mode Conflict |
| 46 | Unit D Mode Conflict |
| 56 | Unit E Mode Conflict |
| 17 | Unit A Anti-Freezing Protection |
| 27 | Unit B Anti-Freezing Protection |
| 37 | Unit C Anti-Freezing Protection |
| 47 | Unit D Anti-Freezing Protection |
| 57 | Unit E Anti-Freezing Protection |
| C5 | Jumper Terminal Error |
Document Downloads
- Outdoor Unit User Manual
- Indoor Unit User Manual
- Outdoor Unit Service Manual
- Indoor Unit Service Manual
- Multi Split Submittal Sheet
Warranty Information
Each Multi Split unit set has a warranty of 1 year for parts and 5 years for the compressor. If you need more information, please visit the Air-Con Warranty Policy page.