Related Manuals for AC Pro GMS Series
Summary of Contents for AC Pro GMS Series
- Page 1 AC Pro GMS-Series 9-12K Service Manual Models AWH09QCXD-D3DNB8A/I-FM AWHD(18)ND3MO AWH12QCXD-D3DNB8A/I-FM AWHD(24)ND3MO AWHD(30)ND3MO AWH18QDXF-D3DNB8A/I-FM AWH24QEXH-D3DNB8A/I-FM (Refrigerant R410A)
- Page 2 We reserve the right to correct any clerical errors. Copyright 2018 AC pro.
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Page 3: Notes For Installation And Maintenance
7. Notes for Installation and Maintenance Service Manual Safety Precautions: Important! be installed in the circuit. The air switch should be all-pole parting and the contact parting distance should be more than 3mm. Please read the safety precautions carefully before installa- tion and maintenance. -
Page 4: Safety Precautions For Installing And Relocating The Unit
7. Notes for Installation and Maintenance Service Manual Safety Precautions for Installing and Relocating the Unit: To ensure safety, please be mindful of the following precautions. WARNINGS 1. When installing or relocating the unit, be sure to keep the If compressor starts running when stop valve is open and refrigerant circuit free from air or substances other than the connection pipe is not yet connected, air will be sucked in and specified refrigerant. -
Page 5: Main Tools For Installation And Maintenance
7. Notes for Installation and Maintenance Service Manual Main Tools for Installation and Maintenance Level meter Measuring tape Screw driver Impact drill Drill head Electric drill Electroprobe Universal meter Inner hexagon Electronic Torque wrench Open-end wrench spanner leakage detector Vacuum pump Pressure meter Pipe pliers Pipe pliers... -
Page 6: Installation
8. Installation Service Manual 8.1 Installation Dimension Diagram Space to the wall At least 15cm Space to the wall At least 15cm Space to the obstruction At least 50cm Drainage pipe Installation and Maintenance... - Page 7 8. Installation Service Manual Installation Procedures Start installation Preparation before installation Read the requirements select installation Prepare tools for electric connection location Select indoor unit Select outdoor unit installation location installation location Install wall-mounting Install the support of outdoor unit (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor...
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Page 8: Installation Parts-Checking
8. Installation Service Manual 8.2 Installation Parts-checking unit. (4) Make sure that the installation follows the requirement of Name installation dimension diagram. Indoor unit (5) Select a location which is out of reach for children and far away from animals or plants.If it is unavoidable, please add fence Outdoor unit for safety purpose. - Page 9 8. Installation Service Manual the holes. torque wrench on the union nut. Tighten the union nut with torque (3) Fix the wall-mounting frame on the wall with tapping screws wrench. (As show in Fig.6) and then check if the frame is firmly installed by pulling the frame. (4) Wrap the indoor pipe and joint of connection pipe with If the plastic expansion particle is loose, please drill another fixing insulating pipe, and then wrap it with tape.
- Page 10 8. Installation Service Manual 7. Connect Wire of Indoor Unit Indoor and (1) Open the panel, remove the screw on the wiring cover and outdoor power cord Indoor unit then take down the cover. (As show in Fig.11) pipe Screw Panel Liquid pipe...
- Page 11 8. Installation Service Manual 5. Connect Outdoor Electric Wire (4) For the unit with cooling capacity of 2300W~5000W, 6 (1) Remove the wire clip; connect the power connection wire and expansion screws are needed; for the unit with cooling capacity signal control wire (only for cooling and heating unit) to the wiring of 6000W~8000W, 8 expansion screws are needed;...
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Page 12: Leakage Detection
8. Installation Service Manual 8.8 Leakage Detection (1) With leakage detector: The drain hose can't raise upwards. Check if there is leakage with leakage detector. (2) With soap water: Wall If leakage detector is not available, please use soap water for leakage detection. -
Page 13: Error Code List
9. Maintenance Service Manual 9.1 Error Code List Display Method of Indoor Unit No. Malfunction Name A/C status Possible Causes Dual-8 Code Display Possible reasons: During cooling and drying operation, 1. Refrigerant was superabundant; except indoor fan operates, all loads stop High pressure 2. - Page 14 9. Maintenance Service Manual Display Method of Indoor Unit No. Malfunction Name A/C status Possible Causes Dual-8 Code Display 1. Loosening or bad contact of Indoor evaporator temp. sensor and mainboard AC stops operation once reaches the terminal. Indoor evaporator setting temperature.
- Page 15 9. Maintenance Service Manual Display Method of Indoor Unit No. Malfunction Name A/C status Possible Causes Dual-8 Code Display Compressor Min Showing during min. cooling or min. frequence in test state heating test Compressor rated S h o w i n g d u r i n g n o m i n a l c o o l i n g o r frequence in test state nominal heating test Compressor maximum...
- Page 16 9. Maintenance Service Manual Display Method of Indoor Unit No. Malfunction Name A/C status Possible Causes Dual-8 Code Display Outdoor DC fan motor Outdoor DC fan motor malfunction lead to DC fan motor malfunction or system malfunction compressor stop operation, blocked or the connector loosed compressor stop operation and Outdoor To protect the electronical components...
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Page 17: Procedure Of Troubleshooting
9. Maintenance Service Manual 9.2 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 18 9. Maintenance Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 Main detection points: ● SmoothlyIs the control terminal of PG motor connected tightly? ● SmoothlyIs the feedback interface of PG motor connected tightly? ● The fan motor can't operate? ●...
- Page 19 9. Maintenance Service Manual 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? ●...
- Page 20 9. Maintenance Service Manual 4. Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8 Main detection points: ● Instant energization afte de-energization while the capacitordischarges slowly? ● The zero-cross detectioncircuit of the mainboard is defined abnormal? Malfunction diagnosis process: Start Turn power off for 1minute,the turn...
- Page 21 9. Maintenance Service Manual 5. Malfunction of detecting plate(WIFI) JF Start check if the connection wire are correctly connected Replace the detecting plate with the same model Is malfunction eliminated Replace the mainboard with the same model The end Installation and Maintenance...
- Page 22 9. Maintenance Service Manual 6. Malfunction of Insufficient fluorine protection F0 Troubleshooting for F0 malfunction Heat exchangers are Clean the heat exchangers and remove Malfunction is too dirty or the air inlet/outlet eliminated. blockage of air inlet/outlet. is blocked. Compressor doesn't work Malfunction is Make compressor run normally.
- Page 23 9. Maintenance Service Manual 7. Communication malfunction E6 Main detection points: ● Check if the connection wire and the built-in wiring of indoor and outdoor unit are connected well and without damage; ● If the communication circuit of indoor mainboard is damaged? If the communication circuit of outdoor mainboard (AP1) is damaged? Malfunction diagnosis process: Start If the unit is operation...
- Page 24 9. Maintenance Service Manual 8. Malfunction of Overcurrent Protection E5 Main detection points: ● Is the supply voltage unstable with big fluctuation? ● Is the supply voltage too low with overload? ● Hardware trouble? Malfunction diagnosis process: Start Normal fluctuation should be within 10 % Is malfunction Is the supply voltage unstable of the rated voltage on the nameplate...
- Page 25 9. Maintenance Service Manual ●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 within 210VAC~240VAC. ●Is the reactor (L) correctly connected? Is the connection loose or fallen? Is the reactor (L) damaged? Fault diagnosis process: Turn on the unit...
- Page 26 9. Maintenance Service Manual 2. IPM protection H5 , over-phase current of compressor P5 (AP1 hereinafter refers to the control board of the outdoor unit) Main detection points: (1) compressor COMP terminal (2) power supply voltage (3) compressor (4) charging amount of refrigerant (5) air inlet and air outlet of indoor/outdoor unit Malfunction diagnosis process: Turn on the unit...
- Page 27 9. Maintenance Service Manual 3. High temperature and overload protection (E8)(AP1 below means control board of outdoor unit) Main detection points: (1) outdoor temperature (2) fan (3)air inlet and air outlet of indoor/outdoor unit Malfunction diagnosis process: Overload protection, high temperature prevention protection Normal protection.
- Page 28 9. Maintenance Service Manual 4. Start-up failure LC (following AP1 for outdoor unit control board) Main detection points: (1) compressor wire (2) compressor (3) charging amount of refrigerant Malfunction diagnosis process: Power on the unit Restart it up after Is stop time of the compressor 3 minutes longer than 3 minutes? Does startup fail?
- Page 29 9. Maintenance Service Manual 5. Desynchronization diagnosis for compressor H7 (AP1 hereinafter refers to the control board of the outdoor unit) Main detection points: (1) system pressure (2) power supply voltage Malfunction diagnosis process: Synchronism after Synchronism energize the unit occurred during and start it operation...
- Page 30 9. Maintenance Service Manual 6. Overload protection of compressor H3, high discharge temperature protection of compressor E4 (AP1 hereinafter refers to the control board of the outdoor unit) Main detection points: (1) electronic expansion valve (2) expansion valve terminal (3) charging amount of refrigerant (4) overload protector Malfunction diagnosis process: After the unit de-energized...
- Page 31 9. Maintenance Service Manual 7 Communication malfunction: (following AP1 for outdoor unit control board) Mainly detect: ●Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged? ●Detect the indoor and outdoor units connection wire and indoor and outdoor units inside wiring is connect well or not, if is there any damage? Fault diagnosis process: Start...
- Page 32 9. Maintenance Service Manual 8. Overload and high discharge temperature malfunction Main detection points: ● If the electronic expansion valve is connected well? Is the electronic expansion valve damaged? ● If the refrigerant is leaked? ● The compressor overload protection terminal is not connected well with the mainboard? ●...
- Page 33 9. Maintenance Service Manual H3 or E4 is displayed 30min after power off the unit If the overload protector SAT is well connected? Under ambient temperature, test the resistance of overload protector with ohmmeter; resistance value should be＜1000ohm Connect wire If the wiring terminal FA of electronic according to wiring expansion valve is well connected?
- Page 34 9. Maintenance Service Manual 9.3 Troubleshooting for Normal Malfunction 1. Air Conditioner can't be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether it's due to power failure. If yes, No power supply, or poor connection After energization, operation indicator isnt bright wait for power recovery.
- Page 35 9. Maintenance Service Manual 4. ODU Fan Motor can't Operate Possible causes Discriminating method (air conditioner status) Troubleshooting Connect wires according to wiring diagram to Wrong wire connection, or poor Check the wiring status according to circuit diagram make sure all wiring terminals are connected connection firmly Measure the capacity of fan capacitor with an...