Haier AB142ACBIA [273/365] Indoor units pcb except for ap18 ap88 ports and functions

Condition for the PCB data:

1.Working ambient temperature:－10℃～70℃, relative humidity:30%～95%

2.Preserved ambient temperature:－20℃～80℃，relative humidity：30%～95%

3.Power supply:220VAC、50/60Hz，voltage range:160V～250V

4.Precise of temperature control:±1℃

Port and definition

P1——connect to external power supply, live line: L (220VAC)

P2——connect to external power supply, neutral line: N (0VAC)

P3、4、5、6——control external load, neutral line: N1、N2、N3、N4(0VAC)

P7——control external load, electrical heat: HEAT (control output 220VAC)

P8——control external load, health function: OXYGEN (control output 220VAC)

P9——control external load, humidification: HUMI (control output 220VAC)

P10——control external load, SWING(control output 220VAC)

P11——control external load, WATER PUMP(control output 220VAC)

P12——control external load, indoor fan motor low speed: L(control output 220VAC)

P13——control external load, indoor fan motor mid speed: M(control output 220VAC)

P14——control external load, indoor fan motor high speed: H(control output 220VAC)

P15——communication with fixed frequency single outdoor unit: COMM(0~220VAC)

P16——input control, signal live line: L’(220VAC)

P17——input control, signal neutral line: N’(0VAC)

CN1——input port of transformer (220VAC)

CN2——input port 1 of transformer (no use)

CN3——input port 2 of transformer (no use)

CN4——input port 3 of transformer (1-2、14VAC，3-4、12VAC)

CN5——input control, connecting port to wired controller: CONTROLLER（three bits: 1. power supply:

12VAC, 2. power supply: 0VAC, 3. communication: COMM.）.

CN6——input control, ambient temp.-coil temp. sensor connecting port: ROOM/PIPE（1-2、ROOM，

3-4、PIPE。）

Indoor ambient temp. sensor: R25=23KΩ+-2.5%，B25/50=4200K+-3%，range:（-40，80）

Indoor coil temp. sensor: R25=10KΩ+-3%，B25/50=3700K+-3%，range:（-20，90）

CN7——control external load, fresh air control: FRESH（1. blank, 2. power supply 0VDC, 3. control

output: 12VDC.）

CN8——input signal: FREEZE（no use）

CN9——input control（no use）

CN10——communication with fixed frequency single outdoor unit: (0~12VDC)

CN11——input signal, door switch: DOOR（1-2 short circuit is normal, cut off P8 output）

CN12——input signal, external alarm input: ALARM（1-3 short circuit is normal, if cut off, air

conditioner stops work.）

Note: For convertible type, cassette type, duct type units, CN11 and CN12 must be in short

circuit, or PCB will display failure information.

CN13——input signal, wiring port of remote receiver board: RECEIVE BOARD（1. power supply 5VDC,

2. power supply 0VDC, 3. remote signal, 4. signal output of running lamp 0VDC, 5. signal output of timer

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Indoor units PCB except for AP18, AP88--ports and functions

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