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Haier

Module used to integrate with a Haier AC unit. The iZone AC unit module (C325#) connects to the CPU module (C225) to enable communication with a ducted AC unit.

Haier R410 Gas Type​

Compatibility​

SeriesIndoorOutdoorAC Unit module
ADH Series onlyC325HI*

* NOT compatible with Zones, Master or RF as controlling sensor, ONLY return air.

Connection​

  • Polarity is critical

Haier Interface Board Connections​

  1. Connect a shielded, 2 core, twisted pair control cable from the C225 / C325HI to the A / B terminals on the Haier Interface board YCJ-A002.
  2. Connect the interconnecting cable supplied by Haier to CN19/CN24 in the fan coil unit of the Haier Interface board YCJ-A002.
Indoor Unit ModelInterface Board Connection
ADH105H1ERGCN24
ADH125H1ERGCN24
ADH140H1ERGCN24
ADH160H1ERGCN24

Haier R410 pcb CN24

Indoor Unit ModelInterface Board Connection
ADH200H1ERGCN19
ADH250H1ERGCN19

Haier R410 pcb CN19

Notes​

  • Requires proprietary controller / Requires Interface board
  • NOT compatible with Zones, Master or RF as controlling sensor, ONLY return air.

Haier Interfaceboard YCJ-A002 dipswitches setup​

Haier R410 switch

Haier R32 Gas Type​

Compatibility​

SeriesIndoorOutdoorAC Unit module
AD100HN5FA-SET 10kW High Static Single PhaseAD100S2SH5FA1U100S2SN5FAC325HI2
AD125HP5FA-SET 12.5kW High Static Single PhaseAD125S2SH5FA1U125S2SP5FAC325HI2
AD125HN5FA-SET 12.5kW High Static Single PhaseAD125S2SH5FA1U125S2SP5FAC325HI2
AD140HP5FA-SET 14kW High Static Single PhaseAD140S2SH5FA1U140S2SP5FAC325HI2
AD160HP5FA-SET 15.5kW High Static Single PhaseAD160S2SH5FA1U160S2SP5FAC325HI2
AD180HP5FA-SET 18kW High Static Single PhaseAD180S2SH5FA1U180S2SP5FAC325HI2

Connection​

  • Polarity critical.
  • 3-Core AC control cable supplied by iZone.

Installation Instructions: Connecting the 3-Core Cable​

  1. Power Off: Ensure the AC unit is completely powered off before connecting the 3-core cable.
  2. Connect Cable:
    1. Connect one end of the 3-core cable to the Haier ABC connection on the indoor board. Please refer to indoor board schematic for wired controller port.
    2. Connect the other end to the iZone C325HI2 module.
  3. Verify that the polarity is correct on both ends. Refer to the ABC connection guide below for reference.
  4. Power On Sequence:
    1. If the iZone System is on a separate circuit from the AC unit, power the module before switching on the AC.
    2. If both are on the same circuit, they can be powered on simultaneously.

CN22-1 connection​

haier CN22 wiring

CN1 connection​

haier CN1 wiring

Notes​

  • Power the iZone module before or at the same time as the AC Unit, otherwise the transceiver maybe damaged.
  • Please ONLY use the AC control cable that comes in your iZone kit or AC unit module box to wire between the indoor unit ABC module and C325HI2 AC unit module.

Firmware and Updates​

C325HI2​

C325HI2 1.2 - Jan 2026​

  • Improved command handling by adding validation checks for correct sensor location

C325HI2 1.1 - May 2025​

  • Improved AC communication

C325HI2 1.0 - Jun 2024​

  • First release