Haier AB422XCBAA Service Manual page 145

AB, AE, AD units PCB ports function:
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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