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Diamond Air D2009SHO Service Manual

Single zone high efficiency ductless mini split, indoor/outdoor
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Revision D: 1804200001, Content updated.
Model Numbers:
Indoor:DF2009HMSI, DF2012HMSI, DF2018HMSI, DF2024HMSI
Outdoor: D2009SHO, D2012SHO, D2018SHO, D2024SHO

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DiamondAir Single Zone High Efficiency
Ductless Mini Split Service Manual

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  • Page 1: Table Of Contents

    DiamondAir Single Zone High Efficiency Ductless Mini Split Service Manual Revision D: 1804200001, Content updated. Model Numbers: Indoor:DF2009HMSI, DF2012HMSI, DF2018HMSI, DF2024HMSI Outdoor: D2009SHO, D2012SHO, D2018SHO, D2024SHO Table of Contents Precaution Part Names And Functions Dimension Refrigerant Cycle Diagram Wiring Diagram...
  • Page 2 CONTENTS 1. Precaution ..............................1 1.1 Safety Precaution .......................... 1 1.2 Warning ............................1 2. Part Names And Functions .......................... 4 2.1 Model Names of Indoor/Outdoor units ..................4 2.2 Part names of Indoor/Outdoor units ....................4 3. Dimension ..............................6 3.1 Indoor Unit .............................

  • Page 3: Precaution

    Sharp edges could cause injury, be especially careful of the case edges and the 1. Precaution fins on the condenser and evaporator. ◼ For installation, always contact the 1.1 Safety Precaution dealer or an authorized service center. ◼ To prevent injury to the user or other ◼...
  • Page 4 There is risk of electric shock or fire. ◼ Keep level even when installing the ◼ Stop operation and close the window product. in storm or hurricane. If possible, remove It can avoid vibration of water leakage. the product from the window before the ◼...
  • Page 5 ◼ Do not drink the water drained from the product. ◼ Use a firm stool or ladder when cleaning or maintaining the product. Be careful and avoid personal injury. ◼ Replace the all batteries in the remote control with new ones of the same type.

  • Page 6: Part Names And Functions

    2. Part Names And Functions 2.1 Model Names of Indoor/Outdoor units Outdoor units Series Capacity Indoor units DF2009HMSI D2009SHO DF2012HMSI D2012SHO Inverter DF2018HMSI D2018SHO DF2024HMSI D2024SHO 2.2 Part names of Indoor/Outdoor units...

  • Page 8: Dimension

    3. Dimension 3.1 Indoor Unit Model DF2009HMSI DF2012HMSI 835mm 198mm 280mm (32.9in) (7.8in) (11.0in) DF2018HMSI DF2024HMSI 990mm 218mm 315mm DF2018HMSI (39.0in) (8.6in) (12.4in) 1186mm 258mm 343mm DF2024HMSI (46.7in) (10.2in) (13.5in)
  • Page 9 For:DF2009HMSI,DF2012HMSI For DF2018HMSI For DF2024HMSI...

  • Page 10: Outdoor Unit

    More than 70cm(27.6in) Note: The above drawing is only for reference. The appearance of your units may be different. Model W in(mm) D in(mm) H in(mm) W1 in(mm) A in(mm) B in(mm) D2009SHO 31.5(800) 13.11(333) 21.81(554) 34.25(870) 20.24(514) 13.39(340) D2012SHO D2018SHO 35.98(914)

  • Page 11: Refrigerant Cycle Diagram

    4. Refrigerant Cycle Diagram INDOOR OUTDOOR Electronic CAPILLARY expansion valve LIQUID SIDE tube 2-WAY VALVE T3 Condenser temp. sensor HEAT HEAT T4 Ambient T1 Room temp. EXCHANGE EXCHANGE temp. sensor sensor (EVAPORATOR) (CONDENSER) T2 Evaporator temp. sensor GAS SIDE 4-WAY VALVE 3-WAY VALVE Accumulator Compressor...

  • Page 12: Wiring Diagram

    5. Wiring Diagram Max. Max. Standard Additional Models Elevati Length length refrigerant (Pls refer the wiring diagram on the unit) DF2009HMSI + D2009SHO 6 Installation Details 7.5m 15g/m (24.6ft) (32.8ft) (82.0ft) (0.16oz/ft) 6.1 Wrench torque sheet for DF2012HMSI + D2012SHO installation...

  • Page 13: Adding The Refrigerant After Running The System For Many Years

    1. Air purging with vacuum pump valve. 6.5 Adding the refrigerant after running the system for many years 1) Completely tighten the flare nuts of the Procedure indoor and outdoor units, confirm that both 1). Connect the charge hose to the 3-way the 2-way and 3-way valves are set to the service port, open the 2-way valve and the 3- closed position.

  • Page 14: Re-Installation While The Indoor Unit Need To Be Repaired

    6.6 Re-installation while the indoor unit need to be repaired 1. Collecting the refrigerant into the outdoor unit 1) Completely tighten the flare nuts of the indoor and outdoor units, confirm that both the Procedure 2-way and 3-way valves are set to the closed 1).

  • Page 15: Re-Installation While The Outdoor Unit Need To Be Repaired

    6.7 Re-installation while the outdoor valve at the bottom of the cylinder. If the unit need to be repaired refrigerant is R410A, make the cylinder bottom up to ensure liquid charge. 1. Evacuation for the whole system 2). Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air (be careful of the liquid...

  • Page 16: Operation Characteristics

    7. Operation Characteristics Temperature Cooling operation Heating operation Drying operation Mode 17℃～32℃ 0℃～30℃ 10℃～32℃ Room temperature (62℉～90℉) (32℉～86℉) (50℉～90℉) Outdoor temperature °C ～50 °C °C ～30 °C °C ～50 °C (DF2009HMSI, DF2012HMSI, °F ～122 °F °F ～86 °F °F ～122 °F DF2018HMSI, DF2024HMSI) (-22...

  • Page 17: Electronic Function

    8. Electronic Function 8.1 Abbreviation T1: Indoor room temperature T2: Coil temperature of evaporator T3: Coil temperature of condenser T4: Outdoor ambient temperature TP: Compressor discharge temperature 8.2 Display function 8.2.1 Icon explanation on indoor display board. ION indication lamp(optional function)：This lamp illuminates when Clean Air feature is activated.

  • Page 18: Main Protection

    function. 8.3 Main Protection 8.3.7 Compressor preheating functions 8.3.1 Three minutes delay at restart for Preheating permitting condition: compressor When T4(outdoor ambient temperature)＜ Less than 1 minute delay for the 1 time stand- 3°C(37.4°F), the preheating function will be up and 3 minutes delay for others. activate 8.3.2 Temperature protection of compressor 8.3.8 Zero crossing detection error...

  • Page 19: Operation Modes And Functions

    8.4 Operation Modes and Functions the speed can be selected as high, medium, low and auto. 8.4.1 Fan mode When the setting temp. is reached, if the (1) Outdoor fan and compressor stop. compressor stop running, indoor fan motor will (2) Temperature setting function is disabled, and run in Minimum speed or setting speed.
  • Page 20 When the AC run in mute mode, the compressor T1-Td+¦ ¤ T will run with low frequency. When the current is more than setting value, the current protection function will be activated and the compressor will stop. 8.4.3.2 Outdoor fan running rules The outdoor unit will be run at different fan speed according to T4.
  • Page 21 off the machine. T1-Ts 8.4.6.2 In forced operation mode, all general protections and remote control are available. Cooling 8.4.6.3 Operation rules: Forced cooling mode: Fan only The compressor runs at F2 frequency and indoor fan runs as breeze. After running for 30 minutes. Heating* the machine will turn to auto mode as Heating*: For cooling only models, they will run at...
  • Page 22 8.4.10 Point check function Press the LED DISPLAY or LED or MUTE button of the remote controller three times, and then press the AIR DIRECTION or SWING button three times in ten seconds, the buzzer will keep ring for two seconds. The air conditioner will enter into the information enquiry status.
  • Page 23 Enquiry Display value Meaning Remark information T1,T2,T3,T4, -1F,-1E,-1d,-1c,- -25,-24,-23,-22,-21,- 1. All the displaying temperature is actual T2B,TP,TH, 1b,-1A value. Targeted 2. All the temperature is °C no matter -19—99 -19—99 Frequency, what kind of remote controller is used. A0,A1,…A9 100,101,…109 Actual 3.

  • Page 24: Troubleshooting

    9. Troubleshooting Safety Electricity power is still kept in capacitors even the power supply is shut off. Do not forget to discharge the electricity power in capacitor. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) For other models, please connect discharge resistance (approx.100Ω 40W) or soldering iron (plug) between +, - terminals of the electrolytic capacitor on the contrary side of the outdoor PCB.

  • Page 25: Indoor Unit Error Display

    9.1 Indoor Unit Error Display (DF2009HMSI Thru DF2024HMSI) Operation Timer lamp Display LED STATUS lamp ☆ 1 time Indoor unit EEPROM parameter error ☆ 2 times Indoor / outdoor units communication error ☆ 3 times Zero-crossing signal detection error ☆ 4 times Indoor fan speed has been out of control Indoor room temperature sensor T1 open circuit or ☆...

  • Page 26: Outdoor Unit Error Display

    9.2 Outdoor unit error display For D2009SHO, D2012SHO, D2018SHO 290-330VDC standby 210-300VDC running connect to the DR module bridge connect to reactance connect to ear th fuse 250V 30A [ V1. 8] 2015- 01- 16 C N 22 CN 6...
  • Page 27 For D2024SHO Connect to the Indoor evap.pipe out temp. sensor T2B-A、T2B-B、T2B-C、T2B-D、T2B-E external drive DC fan 6 5 4 3 2 1 motor connector Electric Expansion Electric Expansion testPort Electric Expansion Electric Expansion Electric Expansion external drive DC fan external drive DC fan Value C Value E communication...
  • Page 28 IPM board, connect to DC fan motor TO M AI N 0VAC ( st andby) C N 19 C N 55 10- 200VAC ( r unni ng) EU - KFR 105W / BP2T3N 1- 350( 767) . D . 13. M P2- 1 202302141237 I PM 2 C N 57...

  • Page 29: Diagnosis And Solution

    9.3 Diagnosis and Solution 9.3.1 EEPROM parameter error diagnosis and solution(E0/F4) E0/F4 Error Code Malfunction decision Indoor or outdoor PCB main chip does not receive feedback conditions from EEPROM chip. Supposed causes Installation mistake ● PCB faulty ● Trouble shooting: Power off, then restart the unit 2 minutes later.
  • Page 30 9.3.2 Indoor / outdoor unit’s communication diagnosis and solution(E1) Error Code Malfunction decision Indoor unit does not receive the feedback from outdoor unit conditions during 110 seconds and this condition happens four times continuously. Supposed causes Wiring mistake ● Indoor or outdoor PCB faulty ●...
  • Page 31 Remark: Use a multimeter to test the DC voltage between 2 port and 3 port of outdoor unit. The red pin of multimeter connects with 2 port while the black pin is for 3 port. When AC is normal running, the voltage will move alternately between -25V to 25V.
  • Page 32 9.3.3 Zero crossing detection error diagnosis and solution (E2) Error Code Malfunction decision When PCB does not receive zero crossing signal feedback for 4 conditions minutes or the zero crossing signal time interval is abnormal. Supposed causes Connection mistake ● PCB faulty ●...
  • Page 33 9.3.4 Fan speed has been out of control diagnosis and solution(E3) E3/F5 Error Code Malfunction decision When indoor fan speed keeps too low (300RPM) for certain time, conditions the unit will stop and the LED will display the failure. Supposed causes Wiring mistake ●...
  • Page 34 Index 1: 1:Indoor or Outdoor DC Fan Motor(control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector. If the value of the voltage is not in the range showing in below table, the PCB must has problems and need to be replaced.
  • Page 35 9.3.5 Open circuit or short circuit of temperature sensor diagnosis and solution(E5) E4/E5/F1/F2/F3 Error Code Malfunction decision If the sampling voltage is lower than 0.06V or higher than 4.94V, conditions the LED will display the failure. Supposed causes Wiring mistake ●...
  • Page 36 9.3.6 Refrigerant Leakage Detection diagnosis and solution(EC) Error Code Malfunction decision Define the evaporator coil temp.T2 of the compressor just starts conditions running as Tcool. In the beginning 5 minutes after the compressor starts up, if T2 °C( °F) ＜Tcool－2 Tcool－35.6 does not keep continuous 4 seconds and this situation happens 3 times, the display area...

  • Page 37: Overload Current Protection Diagnosis And Solution(F0)

    9.3.6 Overload current protection diagnosis and solution(F0) Error Code Malfunction decision An abnormal current rise is detected by checking the specified conditions current detection circuit. Supposed causes Power supply problems. ● System blockage ● PCB faulty ● Wiring mistake ● Compressor malfunction ●...
  • Page 38 9.3.7 IPM malfunction or IGBT over-strong current protection diagnosis and solution(P0) Error Code Malfunction decision When the voltage signal that IPM send to compressor drive chip is abnormal, the display LED will show “P0” and AC will turn off. conditions Supposed causes Wiring mistake ●...

  • Page 39: For Example

    For example: Note: The photos below are only for reference, it’s may be not same totally with the ones on your side.
  • Page 42 For 24K~36K: At first test the resistance between every two ports of U, V, W of IPM and P, N. If any result of them is 0 or close to 0, the IPM is defective. Otherwise, please follow the procedure below: Check whether the power voltage Restart the unit when the power supply Check whether the power voltage...
  • Page 43 9.3.8 Over voltage or too low voltage protection diagnosis and solution(P1) Error Code Malfunction decision An abnormal voltage rise or drop is detected by checking the conditions specified voltage detection circuit. Supposed causes Power supply problems. ● System leakage or block ●...
  • Page 44 9.3.9 High temperature protection of IPM module diagnosis and solution(P2) Error Code Malfunction decision If the sampling voltage is not 5V, the LED will display the failure. conditions Supposed causes PCB faulty ● Trouble shooting: Check if the fastening screws Check if the fastening screws on the PCB and IPM radiator on the PCB and IPM radiator...

  • Page 45: Inverter Compressor Drive Error Diagnosis And Solution(P4)

    9.3.10 Inverter compressor drive error diagnosis and solution(P4) Error Code Malfunction decision An abnormal inverter compressor drive is detected by a special conditions detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on. Supposed causes Wiring mistake ●...

  • Page 46: Ipm Continuity Check

    IPM continuity check Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure the resistance between P and UVWN; UVW and N. Digital tester Normal resistance value Digital tester Normal resistance value (+)Red (-)Black...
  • Page 47 For 24K~36K: At first test the resistance between every two ports of U, V, W of IPM and P, N. If any result of them is 0 or close to 0, the IPM is defective. Otherwise, please follow the procedure below: Check whether the power voltage Restart the unit when the power supply Check whether the power voltage...
  • Page 48 Error Code Malfunction decision When the pressure of system reach a certain value, the low conditions pressure protector will switch off. After the pressure resume to normal ,the protection code will disappear. Supposed causes Wiring mistake ● Pressure protector faulty ●...
  • Page 49 Main parts check 1. Temperature sensor checking Disconnect the temperature sensor from PCB, measure the resistance value with a tester. Temperature sensors. Room temp.(T1) sensor, Indoor coil temp.(T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Compressor discharge temp.(TP) sensor. Measure the resistance value of each winding by using the multi-meter.
  • Page 50 Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (°C--K) °C °F °C °F °C °F °C °F K Ohm K Ohm K Ohm K Ohm 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249 0.61148 101.517 11.5 2.19073 0.59386 96.3423 10.9731 2.11241 0.57683 89.5865...
  • Page 51 Appendix 2 Temperature Sensor Resistance Value Table for TP (°C --K) °C °F °C °F °C °F °C °F K Ohm K Ohm K Ohm K Ohm 542.7 68.66 13.59 3.702 511.9 65.62 13.11 3.595 62.73 12.65 3.492 455.9 59.98 12.21 3.392 430.5...
  • Page 52 Appendix 3: °C °F °C °F °C °F °C °F °C °F 69.8 123.8 179.6 235.4 71.6 125.6 181.4 237.2 24.8 73.4 127.4 183.2 26.6 75.2 129.2 240.8 28.4 186.8 242.6 30.2 25.5 77.9 132.8 188.6 244.4 78.8 134.6 190.4 246.2 32.9 80.6...
  • Page 53 Appendix 4 Normal voltage of P and N 380-420V(3- 208-240V(1-phase,3-phase) phase) In standby around 310VDC around 530VDC In operation With partial With fully With passive active PFC active PFC PFC module module module >200VDC >310VDC >370VDC >450VDC...

  • Page 54: Compressor Checking

    2.Compressor checking Measure the resistance value of each winding by using the tester. Position Resistance Value ASM98D32UFZ ATM115D43UFZ2 ATM150D23UFZ ATF235D22UMT ATF250D22UMT Blue – 2.25Ω 1.87Ω 1.72Ω 0.75Ω 0.75Ω Blue - (20°C (20°C (20°C (20°C (20°C Black /68°F) /68°F) /68°F) /68°F) /68°F) Red –...
  • Page 55 3. IPM continuity check Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure the resistance between P and UVWN; UVW and N. Digital tester Normal resistance value Digital tester Normal resistance value (+)Red...
  • Page 56 5: Pressure On Service Port Cooling chart: °F ° (23.89) (29.44) (35) (40.56) (46.11) 70/59 10.1 75/63 10.7 80/67 11.2 °F ° (23.89) (29.44) (35) (40.56) (46.11) 70/59 75/63 80/67 °F ° (23.89) (29.44) (35) (40.56) (46.11) 70/59 0.82 0.78 0.81 0.86 1.01...
  • Page 57 Heating Chart: °F 57/53 47/43 37/33 27/23 17/13 °C (13.89/11.67) (8.33/6.11) (2.78/0.56) (-2.78/-5) (-8.33/-10.56) 30.3 28.5 25.3 22.8 20.8 32.5 30.0 26.6 25.4 23.3 33.8 31.5 27.8 26.3 24.9 °F 57/53 47/43 37/33 27/23 (- 17/13 °C (13.89/11.67) (8.33/6.11) (2.78/0.56) 2.78/-5) (-8.33/-10.56) °F...

  • Page 58: Disassembly Instructions

    10 Disassembly Instructions Note: This part is for reference, the photos may have slight difference with your machine. 10.1 Indoor unit Parts name Procedures Remarks Front panel How to remove the front Overview: panel. Pull the below side of One screw Panel the panel and release the fixing the cover...
  • Page 59 Electrical How to remove the Room temp. parts electrical parts. sensor Grounding screws After remove the front panel from Swing motor procedure 1, pull out the room temp. sensor and evaporator coil sensor. Remove the grounding screws. Pull out the clip toward the left side and open the cover.
  • Page 60 Evaporator remove evaporator. 1) After remove the front panel ass’y and electrical parts following procedure 1 and procedure 2, remove the pipe holder at the rear side of the unit. 2) Remove the two screws on the evaporator at the base bearing side. 3) Remove two screws on the evaporator at the fixed plates and then lift...
  • Page 61 Fan and How to remove the fan motor and motor. After remove the evaporator ass’y following procedure 1, procedure 2 and procedure 3, remove the three screws fixing the cover Remove the screw fixing the motor and then pull out the motor. Three screws One screw...

  • Page 62: Outdoor Unit

    10.2 Outdoor unit D2009SHO, D2012SHO Part name Procedures Remarks Panel plate How to remove the panel plate. Screws of top panel (3 screws, 1 screw is under the big handler) 1) Stop operation of the air conditioner and 3 screws turn “OFF”...
  • Page 63 ○ Fan ass’y ○ How to remove the fan ass’y. 1) After remove the panel plate following procedure 1, remove the hex nut fixing the fan and then remove ○ the fan. 2) Unfix the hooks and compressor T3,T4,T5 sensor then open the electronic control box cover.
  • Page 64 3) Disconnect the ○ connector for fan motor from the electronic control board. ○ 4) Remove the four fixing screws of the fan motor. Then remove the fan motor. Electrical How to remove the parts ○ electrical parts. 1) After finish work of item 1 and item 2, remove the connectors for the compressor.
  • Page 65 3) Pull out connectors of ○ the condenser coil temp. sensor(T3),outdoor ambient temp. sensor(T4) and discharge temp. sensor(TP). 4) disconnect the ○ electronic expansion valve wire 5) Remove the grounding screw. ○ ○ 6) Remove the Wires (1,2,3). Then remove the electronic control box.
  • Page 66 Four-way How to remove the four- valve The picture of four-way valve may be different from way valve. the one on your side. ○ ○ 1) Perform work of item1,3. 2) Recover refrigerant from the refrigerant circuit. 3) Remove the screw of the coil and then remove the coil.
  • Page 67 D2018SHO, Part name Procedures Remarks Panel plate How to remove the panel plate. 1) Stop operation of 3 screws of top panel the air conditioner and turn “OFF” the power 3 screws of breaker. big handle 2) Remove the top panel(3 screws).

  • Page 68: Fan Ass'y

    Fan ass’y How to remove the fan ass’y. ○ 1) After remove the panel plate following procedure 1, remove the hex nut fixing the fan and then remove the fan. ○ 2) After remove the top cover . Unfix the hooks and then open the electronic control box cover.
  • Page 69 3) Disconnect the ○ connector for fan motor from the electronic control board. 4) Remove the four ○ fixing screws of the fan motor. Then remove the fan motor. Electrical How to remove the parts ○ electrical parts. 1) After finish work of item 1 and item 2, remove...
  • Page 70 the connectors for the compressor and reactor. ○ 2) Pull out the two blue ○ wires connected with the four way valve. ○ ○ 3) Pull out connectors of the condenser coil temp. sensor(T3),outdoor ambient temp. sensor(T4) and discharge temp. sensor(TP).
  • Page 71 5) remove the electric ○ heaters. 6) Remove the grounding screw. 7) Remove the Wires (1,2,3 or L1,L2,S).Then remove the electronic control box. ⑥ ○...
  • Page 72 Four-way How to remove the four- valve The picture of four-way valve may be different from way valve. the one on your side. 1) Perform work of ④ ○ item1,3. 2) Recover refrigerant from the refrigerant circuit. 3) Remove the screw of the coil and then remove the coil.
  • Page 73 assembly. ○...
  • Page 74 D2024SHO Part name Procedures Remarks Panel plate How to remove the panel 4 screws of big handle plate. Screws of top panel(3screws,1screws is under the big handle) 1) Stop operation of the air conditioner and turn “OFF” the power breaker. 2) Remove the big handle Screws of front panel(11 screws) first,then remove the top...
  • Page 75 Fan ass’y How to remove the fan ass’y. Electronic control box 1) After remove the panel plate following procedure 2) Remove the nut fixing the fan,and remove the compressor fan. ○ 3) Unfix the hooks and remove the screws, then ○...
  • Page 76 Compressor T3,T4,T5,sensor Pressure switch wire ○ Motor wire Electronic expansion 4 way valve ○ 4) Disconnect the connector for fan motor from the electronic control board. 5) Remove the four fixing ○ screws of the fan motor, then remove the motor.
  • Page 77 Electrical How to remove the parts ○ electrical parts. 1) After finish work of item 1 and item 2, remove the connector for the compressor ○ 2) Pull out the two blue wires connected with the four way valve. 3) Pull out connectors of ○...
  • Page 78 4)Disconnect the pressure ○ switch connector. 5) Disconnect the electronic expansion valve ○ wire from the control board ○ ○ 6) Remove the ground wires . 7) Remove the wires(1,2,3 or L1,L2,S). Then remove the electronic control box.
  • Page 79 Four-way How to remove the four- valve The picture of four-way valve may be different from way valve. the one on your side. 1) Perform work of item 1,3. 2) Recover refrigerant from the refrigerant circuit. 3) Remove the screw of the coil and then remove the coil.
  • Page 80 compressor. 1) After perform work of item1,3. Recover refrigerant from the refrigerant circuit. 2) Remove the discharge pipe and suction pipe with a burner. 3) Remove the hex nuts and washers fixing the compressor on bottom plate. 4) Lift the compressor ③...

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