Air-Con Multi Split

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.

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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.

Tri-Zone Multi Split

Indoor Units (Wall Mount Type)

• A16EW4H4R09
• A16EW4H4R12
• A16EW4H4R18

Indoor Units (Cassette Type)

• A16EC4H4R12
• A16EC4H4R18
• A16EC4H4R24

Indoor Units (Ducted Type)

• A16EK4H4R12
• A16EK4H4R18
• A16EK4H4R24

Indoor Units (Floor & Ceiling Type)

• A16EL4H4R09
• A16EL4H4R12
• A16EL4H4R18
• A16EL4H4R24

Outdoor Units

• AMTCM4H4R18
• AMTCM4H4R24
• AMTCM4H4R30
• AMTCM4H4R36
• AMTCM4H4R42

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	A16CM4H4R36 A16CM4H4R39	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 Code	Error Description
U8	Zero Cross Detection Circuit Malfunction (Indoor Unit)

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.