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AC Pro 19-12k /

115V A-Series

Service Manual

Models

AWH09QB-A3DNB8K/I
AWH09QB-A3DNA5K/O
AWH12QC-A3DNB8K/I
AWH12QC-A3DNA5K/O
(Refrigerant R410A)

Содержание A-Series

Страница 1: ...AC Pro 19 12k 115V A Series Service Manual Models AWH09QB A3DNB8K I AWH09QB A3DNA5K O AWH12QC A3DNB8K I AWH12QC A3DNA5K O Refrigerant R410A ...

Страница 3: ...e 5 Universal meter 6 Torque wrench open end wrench inner hexagon spanner 7 Electronic leakage detector 8 Vacuum pump 9 Pressure meter 10 Pipe pliers pipe cutter 11 Pipe expander pipe bender 12 Soldering appliance refrigerant container PART I INSTALLATION AND MAINTENANCE 1 MAIN TOOLS FOR INSTALLATION AND MAINTENANCE ...

Страница 4: ... 98 7 16 inch At least 5 7 8 inch At least 5 7 8 inch Space to the wall S p a c e t o t h e o b s t r u c t i o n r o o l f e h t o t e c a p S A t l e a s t 1 1 8 i n c h Space to the obstructio At least 78 5 8 inch Space to the wall At least 11 13 16 inch At least 19 11 16 inch Space to the obstruction At least 11 13 16 inch Space to the obstruction At least 19 11 16 inch Drainage pipe Space to ...

Страница 5: ...nit Bind up pipes and hang the indoor unit Install the support of outdoor unit select it according to the actual situation Fix outdoor unit Make the bound pipes pass through the wall hole and then connect outdoor unit Install drainage joint of outdoor unit only for cooling and heating unit Connect pipes of outdoor unit Connect wires of outdoor unit Neaten the pipes Vacuum pumping and leakage detec...

Страница 6: ...l safety regulations use qualified power supply circuit and air switch c Make sure the power supply matches with the requirement of air conditioner Unstable power supply or incorrect wiring may result in electric shock fire hazard or malfunction Please install proper power supply cables before using the air conditioner d Properly connect the live wire neutral wire and grounding wire of power socke...

Страница 7: ...4 51 32 55 31 4 Connect the Pipe of Indoor Unit a Aim the pipe joint at the corresponding bellmouth As show in Fig 5 b Pretightening the union nut with hand c Adjust the torque force by referring to the following sheet Place the open end wrench on the pipe joint and place the torque wrench on the union nut Tighten the union nut with torque wrench As show in Fig 6 d Wrap the indoor pipe and joint o...

Страница 8: ...r power and then separate the drain hose As show in Fig 15 3 Bind them evenly 4 The liquid pipe and gas pipe should be bound separately at the end 9 Hang the Indoor Unit 1 Put the bound pipes in the wall pipe and then make them pass through the wall hole 2 Hang the indoor unit on the wall mounting frame 3 Stuff the gap between pipes and wall hole with sealing gum 4 Fix the wall pipe As show in Fig...

Страница 9: ...e red black brown brown black yellow green green yellow green green Screw Cable Cross Plate Sub assy Valve Cover U shaped curve Wall Drain hose Note The wiring connect is for reference only please refer to the actual one 5 Connect Outdoor Electric Wire a Put power connection wire and power wire through the wire passing hole b Remove the wire clip connect the power connection wire and power wire to...

Страница 10: ...laced in water 1 Use Vacuum Pump 1 Remove the valve caps on the liquid valve and gas valve and the nut of refrigerant charging vent 2 Connect the charging hose of piezometer to the refrigerant charging vent of gas valve and then connect the other charging hose to the vacuum pump 3 Open the piezometer completely and operate for 10 15min to check if the pressure of piezometer remains in 0 1MPa 4 Clo...

Страница 11: ...it F4 4 5 Overload limit drop frequency F5 5 7 Over current limit drop frequency F6 6 3 High exhaust temperature limit drop frequency F8 8 1 Refrigerant leakage protection F9 9 2 Anti freezing limit drop frequency F0 10 9 Defrosting FH 2 2 4 Compressor overload protection H1 1 2 IPM protection H3 3 8 Module temperature is too high H5 5 4 PFC protection H5 5 10 Loading EEPROM malfunction HC 6 14 Hi...

Страница 12: ...ion diagnosis process Start End Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted Is there a short circuit due to trip over of the parts Replace the mainboard with the same model NO NO YES YES NO NO YES NO YES YES Place parts upright Replace it with a temperature sensor of the same model Securely insert the temperature sensor Has malfunction been...

Страница 13: ...voltage of this foot to neutral wire on the mainboard 53 enance s the control terminal of PG motor connected tightly s the feedback interface of PG motor connected tightly otor can t operate is broken circuit of the mainboard is defined abnormal diagnosis process Start While power is off stir the blade with a tool to see whether the blade rotates smoothly Check if the connection of PG motor feedba...

Страница 14: ...on and Mainten 3 Malfunction of Protection of Jumper Cap C5 Main detection points Is there jumper cap on the mainboard Is the jumper cap inserted correctly and tightly The jumper is broken The motor is broken Detection circuit of the mainboard is defined abnormal Malfunction diagnosis process Start Is there jumper cap on the mainboard Is the jumper cap inserted correctly and tightly Replace the ju...

Страница 15: ...he IDU Fan Motor U8 Main detection points Instant energization after de energization while the capacitor discharges slowly Is the zero cross detection circuit of the mainboard defined abnormal Malfunction diagnosis process End Turn power off for 1 minute the turn back on U8 is still displayed The zero cross detection circuit of the mainboard is defined abnormal Replace the mainboard with the same ...

Страница 16: ...ectric box are correctly connected Correct connection Connect the line according to wiring diagram Malfunction eliminated NO Main board matches with display board Main board of IDU matches with that of ODU YES Is communication cord damaged Replace IDU s main board Malfunction eliminated End Match correctly according to the product specification Malfunction eliminated YES NO NO NO Replace IDU s mai...

Страница 17: ...Malfunction of detecting plate WIFI JF Start Check if the connection wire are correctly connected Replace the detecting plate with the same model Malfunction eliminated YES Replace the detecting plate with the same model YES End ...

Страница 18: ... the AC voltage between terminal L and N on wiring board XT power supply Shut down the power and wait 20 minutes or use DC voltmeter to measure the voltage on the two ends of capacitor or until the voltage is lower than 20V Voltage within 210VAC 250VAC Check the connection of the reactor L in the Electrical Wiring Diagram Is the wiring of reactor L normal Replace control panel AP1 End Fault with t...

Страница 19: ...s the connection in correct order Is the voltage input of the machine within normal range Use AC voltmeter to measure the voltage between terminal L and N on wiring board XT Is the compressor coil resistance normal Is the insulation of compressor coil against the copper tube in good condition Is the working load of the machine too high Is the radiation good Is the charge volume of refrigerant corr...

Страница 20: ...structed by other objects which affect the heat exchange of indoor and outdoor unit 2 If the indoor and outdoor fans working normally 3 If the environment temperature is too high this will result in the system pressure exceeding the permissible range 4 Is the charge volume of refrigerant is too much 5 Other conditions resulting in the system pressure becoming too high Has capacitor C2 failed Repla...

Страница 21: ...outdoor ambient temperature higher than 53 20 minutes after the complete unit is powered off Is heat dissipation of the indoor unit and outdoor unit abnormal Does the outdoor fan work normally Replace the control panel AP1 End Normal protection please operate after the outdoor ambient temperature is normalized Improve the heat dissipation environment of the unit 1 Check if the fan terminal OFAN is...

Страница 22: ...or stopping enough Fault diagnosis process Power on the unit Is stop time of the compressor longer than 3 minutes Does startup fail Are the wires for the compressor connected correctly Is connection sequence right Replace the control panel AP1 Is the fault is eliminated Replace the compressor End YES YES YES NO Restart it up after 3 minutes Connect the wires as per the connection diagram NO NO NO ...

Страница 23: ...pressor connected correctly Is connection sequence right Is the connection made in clockwise direction Is fault is eliminated Replace the control panel AP1 Replace the compressor End YES YES Connect the wires correctly NO Out of step occurs in operation NO Is the outdoor fan working normally Is the outdoor unit blocked by foreign objects Is fault is eliminated Replace the control panel AP1 Replace...

Страница 24: ... after the complete unit is powered off NO Is the terminal FA for the electronic expansion valve connected correctly Resistances between the first four pins close to the terminal hole and the fifth pin are almost the same less than 100 ohm Is fault is eliminated Replace the electronic expansion valve Replace the control panel AP1 End YES Is fault is eliminated Coolant leakage refilling the coolant...

Страница 25: ...uit Is the resistance around zero Remove the PFC capacitor and measure resistance between the two terminals Disconnect the terminals for the reactor and measure the resistance between the two terminals of the reactor by an ohm gauge End NO Replace it as per the wiring diagram and reconnect the wires Is fault eliminated YES Is there damage or short circuit Replace the control panel AP1 NO NO The ca...

Страница 26: ...lure occurred Check wiring inside of the indoor and outdoor units Are wires broken Check the communication circuit of the outdoor unit The communication circuit is abnormal Replace the main board of the indoor unit The AP1 voltage detection circuit is at fault If the fault is eliminated Replace the main board of the outdoor unit Correctly connect the corresponding wires for the indoor and outdoor ...

Страница 27: ...ystem Filth blockage ice plug greasy blockage cut off valve hasn t been opened completely Is the compressor running abnormally Is there an abnormal sound or oil leakage Is the temperature of the shell too high etc NO Replace the mainboard with the same model NO NO NO NO NO NO Normal fluctuation should be within 10 of the rated voltage on the nameplate Adjust the supply voltage to maintain it withi...

Страница 28: ... and outdoor unit is improper Check whether the installation postion is proper according to installation requirement for air conditioner Adjust the installation position and install the rainproofing and sunproofing for outdoor unit Refrigerant is leaking Discharged air temperature during cooling is higher than normal discharged wind temperature Discharged air temperature during heating is lower th...

Страница 29: ... replace compressor Cylinder of compressor is blocked Compressor canot operate Repair or replace compressor 6 Air Conditioner is Leaking Possible Causes Discriminating Method Air conditioner Status Troubleshooting Drain pipe is blocked Water leaking from indoor unit Eliminate the foreign objects inside the drain pipe Drain pipe is broken Water leaking from drain pipe Replace drain pipe Wrapping is...

Страница 30: ...enance 10 Exploded View and Parts List 10 1 Indoor Unit 29 28 27 30 2 4 9 10 7 12 13 15 16 17 18 19 20 21 22 23 25 26 8 1 3 5 11 14 24 6 6 31 The component picture is only for reference please refer to the actual product The component picture is only for reference please refer to the actual product ...

Страница 31: ...0200004407 0100297601 1 13 Wall Mounting Frame 01252043 01252484 1 14 Cross Flow Fan 10352059 10352056 1 15 Fan Motor 1501208902 1501214605 1 16 Connecting Pipe Clamp 2611216401 2611216401 1 17 Drainage hose 0523001408 05230014 1 18 Stepping Motor 1521212901 1521210710 1 19 Crank 73012005 73012005 1 20 Electric Box Assy 100002001620 100002001623 1 21 Terminal Board 42011233 42011233 1 22 Jumper 42...

Страница 32: ...y for reference please refer to the actual product Service Manual 12 13 14 11 1 2 4 6 7 8 9 10 18 15 16 17 33 19 22 21 20 25 24 26 3 23 5 28 27 29 31 30 32 34 AWH12QC A3DNA5K O AWH09QB A3DNA5K O The component picture is only for reference please refer to the actual product 4 2 OUTDOOR UNIT ...

Страница 33: ...7100005 1 15 Valve Support 01713041 01713041 1 16 Valve 07100003 1 17 Cable Cross Plate sub assy 02123015 02123015 1 18 Cover of pass wire 01413069 01413069 1 19 Magnet Coil 4300040021 4300040021 1 20 Rear Grill 01473057 01473057 1 21 Condenser Assy 011002000466 011002000509 1 22 Temperature Sensor 39000310 39000310 1 23 Clapboard Sub Assy 01233034 01233034 1 24 Top Cover Plate 01253443 0125344311...

Страница 34: ...ont panel Panel rotation Groove 91 Installation and Maintenance 11 1 Removal Procedure of Indoor Unit after turning off all power supplies and discharge the refrigerant completely before removal a b Axile bush Push out the axile bush on horizontal louver Bend the horizontal louver with hand and then separate the horizontal louver from the crankshaft of step motor to remove it Horizontal louver Loc...

Страница 35: ...tecting plate WIFI Installation and Maintenance Service Manual a b Remove the screws fixing front case Note 1 Open the screw caps before removing the screws around the air outlet 2 The quantity of screws fixing the front case sub assy is different for different models Screw off the 2 screws that are locking the display board Loosen the connection clasps between front case sub assy and bottom case ...

Страница 36: ...minal Lift up the main board and take it off 8 Remove electric box assy Electric box Electric box assy Clasps Shield cover of electric box sub assy Cold plasma generator Water retaining sheet Grounding screw Screw Power cord Wire clip Screws Main board Screw Indoor tube temperature sensor Wiring terminal of motor Wiring terminal of stepping motor Screw Vertical louver Vertical louver Clasps Bottom...

Страница 37: ... then pull the terminal Circlip Soft sheath Holder Connector Procedure Steps Remove 3 screws fixing evaporator assy 9 Remove evaporator assy Screws Connection pipe clamp Evaporator assy Evaporator assy Screw Groove Bottom case Clasp Connection pipe At the back of the unit remove the screw fixing connection pipe clamp and then remove the connection pipe clamp Adjust the position of connection pipe ...

Страница 38: ...ove screw fixing step motor then remove step motor Service Manual Procedure Steps Remove the screws fixing motor clamp and then remove the motor clamp Remove the screws at the connection place of cross flow blade and motor lift the motor and cross flow blade upwards to remove them Remove the bearing holder sub assy Remove the screw fixing step motor and then remove the step motor Screws Screw Moto...

Страница 39: ...C A3DNA6E O for example 96 Installation and Maintenance 11 2 Removal Procedure of Outdoor Unit Procedure Steps 1 Remove cable cross plate sub assy and valve cover 3 Remove front grille 2 Remove top cover Remove the screws fixing cable cross plate sub assy and then remove the cable cross plate sub assy Remove the screws fixing valve cover and then remove the valve cover Remove connection screws con...

Страница 40: ... the valve support and the electric box Then remove the right side plate front panel right side plate 97 nstallation and Maintenance 4 Remove front panel 5 Remove right side plate 6 Remove axial flow blade Procedure Steps Remove connection screws connecting the front panel with the chassis and the motor support and then remove the front panel Remove connection screws connecting the right side plat...

Страница 41: ...oard sub assy to remove motor motor support electric box assy clapboard sub assy 98 Installation and Maintenance Service Manual 7 Remove motor and motor support 8 Remove electric box assy 9 Remove clapboard sub assy Procedure Steps tor Pull out the lead out wire and remove themotor Remove the 2 tapping screws remove it Remove the 2 screws fixing the cover of electric box Lift to remove the cover L...

Страница 42: ...erthe 4 weld spots connecting the 4 way Valve Assy to take it out Note Refrig erant shouldbe discharged firstly Welding processshould be as quickly as possible and keepwrapping cotton wet all the time Be sure notto burn out the lead out wire of com pressor Remove the 3 footing screws of the com pressorand remove the compressor 4 way valve assy compressor 99 llation and Maintenance ervice Manual 10...

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