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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.

Multi Split Series
Multi Zone Mini Split Line
New-Multi-Logo.png
Voltage 220V
SEER Rating 21-22
Capacities (Outdoor Unit) 18,000 - 42,000 BTU
Capacities (Indoor Unit) 9,000 - 24,000 BTU
Heat Pump? Yes
Model Sold From June 2017 - Present

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 AMTCM4H4R18 A16EW4H4R09 A16EW4H4R09 A16EW4H4R18
A16EW4H4R09 A16EW4H4R12
Tri Zone AMTCM4H4R24 A16EW4H4R09 A16EW4H4R09 A16EW4H4R12 A16EW4H4R09 A16EW4H4R18
A16EW4H4R09 A16EW4H4R09 A16EW4H4R12 A16EW4H4R12
A16EW4H4R09
Quad Zone
  • AMTCM4H4R30
  • AMTCM4H4R36
A16EW4H4R09 A16EW4H4R12 A16EW4H4R12 A16EW4H4R09 A16EW4H4R18
A16EW4H4R09 A16EW4H4R12 A16EW4H4R12 A16EW4H4R09 A16EW4H4R18
A16EW4H4R09 A16EW4H4R12 A16EW4H4R09 A16EW4H4R18
A16EW4H4R09
Quint Zone AMTCM4H4R42 A16EW4H4R09 A16EW4H4R12 A16EW4H4R09 A16EW4H4R09 A16EW4H4R09 A16EW4H4R12 A16EW4H4R18 A16EW4H4R09
A16EW4H4R09 A16EW4H4R12 A16EW4H4R09 A16EW4H4R09 A16EW4H4R09 A16EW4H4R12 A16EW4H4R18 A16EW4H4R12
A16EW4H4R09 A16EW4H4R12 A16EW4H4R12 A16EW4H4R12 A16EW4H4R09 A16EW4H4R12 A16EW4H4R12 A16EW4H4R18
A16EW4H4R09 A16EW4H4R12 A16EW4H4R18 A16EW4H4R12 A16EW4H4R12 A16EW4H4R09
A16EW4H4R09
  • 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 Code Error Description
U8 Zero Cross Detection Circuit Malfunction (Indoor Unit)
C5 Malfunction Protection of Jumper Cap (Indoor Unit)
H6 Indoor Unit Motor Feedback (Indoor Unit)
F1 Indoor Ambient Temperature Sensor is Open/Short Circuited
F2 Indoor Evaporator Temperature Sensor is Open/Short Circuited
B5 Liquid Valve Temperature Sensor is Open/Short Circuited
B7 Gas Valve Temperature Sensor is Open/Short Circuited
P7 Modular Temperature Sensor is Open/Short Circuited
F3 Outdoor Ambient Temperature Sensor is Open/Short Circuited
F4 Outdoor Condenser Middle Pipe Temperature Sensor is Open/Short Circuited
F5 Outdoor Discharge Temperature Sensor is Open/Short Circuited
E6 Communication Malfunction
U1 Phase Current Detection Circuit Malfunction
P8 Module High Temperature Protection
F0 Insufficient Refrigeration System Protection
PU Capacitor Charging Malfunction
E1 High Pressure System Protection
E3 Lower Pressure System Protection
H3 Compressor Overload Protection
LP Indoor Units and Outdoor Units Are Incompatible
EE Memory Chip Malfunction
DN Wrong Connection of Communication Wire or Electronic Expansion Valve Malfunction
L3 Malfunction Protection of Outdoor Fan 1
DD Wrong Connection of Communication Wire or Electronic Expansion Valve Malfunction Status Detected
E7 Mode Conflict
FO Refrigerant Recycling Mode
AL Cross Fan
H1 Defrosting or Oil Return in Heating Mode
LC Compressor Failed to Start
E4 Compressor High Discharge Temperature Protection
E8 Overload Protection
E5 Whole Unit Overcurrent Protection
P5 Compressor Phase Current Protection
H7 Compressor Desynchronizing
LD Compressor Phase-lacking/Phase-inverse Protection
H5 IPM Modular Protection
PL Direct Current Bus-Bar Low Voltage Protection
PH Direct Current Bus-Bar High Voltage Protection
HC PFC Protection
U7 4-Way Valve Abnormal

Document Downloads

Warranty Information

Each Multi Split unit set has a warranty of 5 years for parts and 7 years for the compressor. If you need more information, please visit the Air-Con Warranty Policy page.