Haier AB242ACBEA Service Manual

Also see for AB242ACBEA: Service manual Manuel d'utilisation Operation and installation manual

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～250V4.Precise of temperature control:±1℃0010451167 PCB information – port and definitionP1——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. controloutput: 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, airconditioner stops work.）Note: For convertible type, cassette type, duct type units, CN11 and CN12 must be in shortcircuit, 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