Related Manuals for AC Pro AWH09QB-A3DNA5K/O
Summary of Contents for AC Pro AWH09QB-A3DNA5K/O
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Page 1: Service Manual
AC Pro 19-12k / 115V A-Series Service Manual Models AWH09QB-A3DNB8K/I AWH09QB-A3DNA5K/O AWH12QC-A3DNB8K/I AWH12QC-A3DNA5K/O (Refrigerant R410A) - Page 2 We reserve the right to correct any clerical errors. Copyright 2018 AC pro.
- Page 3 PART I: INSTALLATION AND MAINTENANCE 1. MAIN TOOLS FOR INSTALLATION AND MAINTENANCE 1. Level, measuring tape 2. Screwdrivers 3. Impact drill, drill head, electric drill 4. Electroprobe 5. Universal meter 6. Torque wrench, open-end wrench, inner hexagon spanner 7. Electronic leakage detector 8.
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Page 4: Installation Dimension Diagram
Service Manual 2. INSTALLATION 8. Installation 2.1 INSTALLATION DIMENSION DIAGRAM 8.1 Installation Dimension Diagram Space to the wall Space to the wall At least 5 7/8 inch At least 5 7/8 inch Drainage pipe Technical Information Installation and Maintenance... - Page 5 Start installation Preparation before installation Read the requirements for Select installation location Prepare tools electric connection Select indoor unit Select outdoor unit installation location installation location Install the support of Install wall-mounting frame, outdoor unit drill wall holes (select it according to the actual situation) Connect pipes of indoor unit and drainage pipe...
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Page 6: Installation Parts-Checking
2.2 INSTALLATION PARTS CHECKING 2.4 REQUIREMENTS FOR ELECTRIC CONNECTION Name Name 1. Safety Precaution Indoor unit Sealing gum a. Must follow the electric safety regulations when installing Outdoor unit Wrapping tape the unit. Connection pipe Support of outdoor b. According to the local safety regulations, use qualified unit power supply circuit and air switch. - Page 7 Service Manual Service Manual Service Manual (2) Pretightening the union nut with hand. please drill another fixing hole nearby. 5. Connect the Pipe of Indoor Unit (3) Fix the wall-mounting frame on the wall with tapping screws Service Manual (3) Adjust the torque force by referring to the following sheet. (1) Aim the pipe joint at the corresponding bellmouth.(As show 5.
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Page 8: Installation Of Outdoor Unit
then take down the cover.(As show in Fig.11) with the band.(As show in Fig.14) Service Manual Service Manual (2) Reserve a certain length of drain hose and power cord 7. Connect Wire of Indoor Unit 8. Bind up Pipe for installation when binding them. When binding to a certain Service Manual Screw 7. - Page 9 Service Manual Service Manual Service Manual Note: Note: Note: Note: Note: Note: 5. Connect Outdoor Electric Wire 5. Connect Outdoor Electric Wire 5. Connect Outdoor Electric Wire (1) Take sufficient protective measures when installing the 5. Connect Outdoor Electric Wire (1) Take sufficient protective measures when installing the (1) Take sufficient protective measures when installing the 5.
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Page 10: Vacuum Pumping And Leak Detection
(1) The through-wall height of drain hose shouldnt be higher Check if there is leakage with leakage detector. than the outlet pipe hole of indoor unit.(As show in Fig.25) (2) With soap water: 2. Leakage Detection Note: (2) Slant the drain hose slightly downwards. The drain hose If leakage detector is not available, please use soap water for (1) With leakage detector: cant be curved, raised and fluctuant, etc.(As show in Fig.26) -
Page 11: Maintenance
3. MAINTENANCE 3.1 ERROR CODE LIST Display of lamp (the time of blinking) Display of Name of malfunction indoor unit Indoor Outdoor Anti-freezing protection Block or Low pressure of refrigerant system Compressor exhaust high temperature protection AC over-current protection Communication failure between indoor unit and outdoor unit Anti-high temperature protection No feedback of indoor fan motor Jumper cap malfunction protection... -
Page 12: Procedure Of Troubleshooting
3.2 PROCEDURE OF TROUBLESHOOTING Indoor unit 1. Malfunction of Temperature Sensor F1, F2 Main detection points: • Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? • Is there short circuit due to trip-over of the parts? •... - Page 13 s the control terminal of PG motor connected tightly? s the feedback interface of PG motor connected tightly? otor can't operate? is broken? 2. Malfunction of Blocked Protection of IDU Fan Motor H6 circuit of the mainboard is defined abnormal? Main detection points: diagnosis process: •...
- Page 14 (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? 3. Malfunction of Protection of Jumper Cap C5 ● The jumper is broken? Main detection points: ●...
- Page 15 4. Malfunction of Zero-crossing Inspection Circuit Malfunction of the 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: Start Turn power off for 1 minute,the turn back on...
- Page 16 4. Communication malfunction E6 Start Cut off power supply. Check if connection line of IDU and ODU and the wire inside electric box are correctly connected. Connect the line Correct connection? according to wiring Malfunction eliminated? diagram. Main board matches Match correctly with display board? Main according to the...
- Page 17 5. 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? Replace the detecting plate with the same model Technical Information...
- Page 18 Outdoor unit: 1. Capacitor charge fault (Fault with outdoor unit) (AP1 below refers to the outdoor control panel) Main Check Points: • Use AC voltmeter to check if the voltage between terminal L and N on the wiring board is with 210VAC~240VAC.
- Page 19 2. IPM Protection, Out-of-step Fault, Compressor Phase Overcurrent (AP1 below refers to the outdoor control panel) Main check points: • Is the connection between control panel AP1 and compressor COMP secure? Is 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) •...
- Page 20 Energize and switch on Is the voltage Does IPM protection occurs Use AC voltmeter to measure Check the supply between terminal L and N after the machine has run for the voltage between terminal L voltage and restore it to on wiring board XT is within a period of time? and N on the wiring board XT)
- Page 21 3. High temperature and overload protection diagnosis (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: • Is outdoor ambient temperature within normal range? • Are the outdoor and indoor fans operating normally? • Is the heat dissipation environment inside and outside the unit good? Fault diagnosis process: Overheat and high temperature protection...
- Page 22 4. Start-up failure (following AP1 for outdoor unit control board) Mainly detect: • Whether the compressor wiring is connected correctly? • Is compressor broken? • Is time for compressor stopping, enough? Fault diagnosis process: Power on the unit Is stop time of the Restart it up after compressor longer than 3 minutes?
- Page 23 5. Out of step diagnosis for the compressor (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: • Is the system pressure too high? • Is the input voltage too low? Fault diagnosis process: Out of step occurs once the Out of step occurs in unit is powered on.
- Page 24 6. Overload and air exhaust malfunction diagnosis (following AP1 for outdoor unit control board) Mainly detect: • Is the PMV connected securely or not? Is PMV damaged? • Is refrigerant leaked? Fault diagnosis process: 20 minutes after the Connect the wires correctly? complete unit is powered off Is the terminal FA for the electronic expansion valve...
- Page 25 7. Power factor correct or (PFC) fault (a fault of outdoor unit) (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: • Check if the reactor (L) of the outdoor unit and the PFC capacitor are broken Fault diagnosis process: Start Check wiring of the reactor...
- Page 26 8. Communication malfunction: (following AP1 for outdoor unit control board) Mainly detect: • Is there any damage to the indoor unit mainboard communication circuit? • Detect the indoor and outdoor unit connection wire and indoor and outdoor units inside wiring is connect well or not, if is there any damage? Fault diagnosis process: Start...
- Page 27 9. Malfunction of Overcurrent Protection Main detection points: • Is the supply voltage unstable with big fluctuation? • Is the supply voltage too low with overload? • Hardware trouble? Fault diagnosis process: Start Is the supply voltage unstable Normal fluctuation should be within 10 % Is malfunction with big fluctuation? of the rated voltage on the nameplate...
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Page 28: Troubleshooting For Normal Malfunction
3.3 TROUBLESHOOTING FOR NORMAL MALFUNCTION 1. Air Conditioner Cant be Started Up Discriminating Method Possible Causes Troubleshooting (Air conditioner Status) Confirm whether its due to power failure. If yes, wait for No power supply, or poor connection for On power-up, operation indicator isnt bright power recovery. - Page 29 4. ODU Fan Motor Cant Operate Discriminating Method Possible Causes Troubleshooting (Air conditioner Status) Check the wiring status according to circuit Connect wires according to wiring diagram to make sure all Wrong wire connection, or poor connection diagram wiring terminals are connected firmly Measure the capacity of fan capacitor with an universal meter and find the capacity is out of Capacity of the ODU fan motor is damaged...
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Page 30: Exploded View And Parts List
10. Exploded View and Parts List 10.1 Indoor Unit 4. EXPLODED VIEW AND PARTS LIST 4.1 Indoor Unit 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. Installation and Maintenance Technical Information... - Page 31 Part Code Description AWH09QB-A3DNB8K/I AWH12QC-A3DNB8K/I Product Code CB438N08000 CB438N08200 Front Panel 20000300073T 20000300074T Front Case 2002248001 2002247401 Axile Bush 10542036 10542036 Helicoid Tongue 26112508 26112436 Left Axile Brush 10512037 10512037 Display Board 30565260 30565260 Rear Case Assy 00000100066 00000100093 Rubber Plug (water tray) 76712012 76712012 O-Gasket Sub-Assy of Bearing...
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Page 32: Outdoor Unit
4.2 OUTDOOR UNIT Service Manual AWH12QC-A3DNA5K/O AWH09QB-A3DNA5K/O AWH12QC-A3DNA5K/O AWH09QB-A3DNA5K/O 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. Technical Information... - Page 33 Part Code Description AWH12QC-A3DNA5K/O AWH09QB-A3DNA5K/O Product Code CB425W07900 CB425W08200 Front Grill 01473012 01473012 Cabinet 0143305801P 0143305801P Electrical heater (Chassis) 76510010 76510010 Axial Flow Fan 10333004 10333004 Chassis Sub-assy 0120388103P 0120388105P Compressor Gasket 76710302 76710302 Drainage Connecter 06123401 06123401 00180030 Overload Protector...
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Page 34: Removal Procedure Of Indoor Unit
11. Removal Procedure Warning: Be sure to wait for a minimum of 20 minutes after turning off all power supplies and discharge the after turning off all power supplies and discharge the after turning off all power supplies and discharge the refrigerant completely before removal. - Page 35 Service Manual Service Manual Service Manual Step Procedure Step Procedure Step Procedure 4. Remove electric box cover 2 and detecting plate(WIFI) Step Procedure 4. Remove electric box cover 2 and detecting 4. Remove electric box cover 2 and detecting plate(WIFI) plate(WIFI) 4.
- Page 36 Service Manual Steps Procedure Step Procedure Steps 7. Remove vertical louver Procedure 7. Remove vertical louver 7. Remove vertical louver Loosen the connection clasps between Bottom vertical louver and bottom case to remove case Loosen the connection clasps between vertical louver. vertical louver and bottom case to remove Bottom case...
- Page 37 Service Manual Service Manual Step Procedure Steps Procedure Steps Procedure Instruction: Some wiring terminals equipped with lock catch. The pulling method is as Instruction: Some wiring terminal of this Instruction: Some wiring terminal of this below: product is with lock catch and other devices. Circlip product is with lock catch and other devices.
- Page 38 Service Manual Step Procedure 10. Remove motor and cross flow blade Steps Procedure 10. Remove motor and cross flow blade Remove the screws fixing motor clamp Screws and then remove the motor clamp. a. Remove screws fixing motor clamp then remove the motor clamp.
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Page 39: Removal Procedure Of Outdoor Unit
11.2 Removal Procedure of Outdoor Unit 11.2 Removal Procedure of Outdoor Unit 11.2 Removal Procedure of Outdoor Unit Warning: Be sure to wait for a minimum of 20 minutes Warning: Be sure to wait for a minimum of 20 minutes after turning off all power supplies and discharge the 5.2 REMOVAL PROCEDURE OF OUTDOOR UNIT Warning: Be sure to wait for a minimum of 20 minutes... - Page 40 Service Manual Steps Procedure Steps Procedure 4.Remove front panel Steps Procedure 4.Remove front panel Step Procedure front panel 4.Remove front panel front panel Remove connection screws connecting the 4. Remove front panel Remove connection screws connecting the front panel with the chassis and the motor front panel front panel with the chassis and the motor Remove connection screws connecting the...
- Page 41 Service Manual Service Manual Service Manual Step Procedure Steps Procedure Steps Procedure Steps Procedure 7. Remove motor and motor support 7.Remove motor and motor support 7.Remove motor and motor support motor support 7.Remove motor and motor support motor support motor support tor Pull out the lead-out wire and remove tor Pull out the lead-out wire and remove tor Pull out the lead-out wire and remove...
- Page 42 rvice Manual ervice Manual Steps Procedure Steps Procedure Step Procedure 10.Remove 4-way valve assy 10.Remove 4-way valve assy 10. Remove 4-way valve assy 4-way valve assy 4-way valve assy Unscrew the fastening nut of the 4-way Unscrew the fastening nut of the 4-way Valve Assy coil and remove the coil.