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Sinclair SDV6 Series Service Manual

Commercial air conditioners full dc inverter systems
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FULL DC INVERTER SYSTEMS
SERVICE MANUAL
OUTDOOR UNITS SDV6-ExxxBS
C O M M E R C I A L A I R C O N D I T I O N E R S S D V 6

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Summary of Contents for Sinclair SDV6 Series

  • Page 1 FULL DC INVERTER SYSTEMS SERVICE MANUAL OUTDOOR UNITS SDV6-ExxxBS C O M M E R C I A L A I R C O N D I T I O N E R S S D V 6...

  • Page 2: Important Note

    Original instructions IMPORTANT NOTE: Read this manual carefully before installing or operating your new air conditioning unit. Make sure to save this manual for future reference.
  • Page 3             CONTENTS      Part  1  General  Information  ................ 3   Part  2  Component  Layout  and  Refrigerant  Circuits ........ 15   Part  3  Control .................... 23  Part  4  Electrical  Components  and  Wiring  Diagrams ........ 33  Part  5  Diagnosis  and  Troubleshooting  ............ 43  ...

  • Page 4: Table Of Contents

    Part 1 General Information 1 Indoor and Outdoor Unit Capacities ............4 2 External Appearance .................. 5 3 Nomenclature .................... 6 4 Combination Ratio ..................8 5 Selection Procedure ................... 9...

  • Page 5: Indoor And Outdoor Unit Capacities

    1 Indoor and Outdoor Unit Capacities 1.1 Indoor Units Table 1-1.1: Indoor unit abbreviation codes Abbreviation Abbreviation Type Type code code One-way Cassette Medium Static Pressure Duct Compact Four-way Cassette High Static Pressure Duct Four-way Cassette Wall-mounted Low Static Pressure Duct Ceiling &...

  • Page 6: External Appearance

    2 External Appearance 2.1 Indoor Units Table 1-2.1: Indoor unit appearance One-way Cassette Compact Four-way Cassette Four-way Cassette Low Static Pressure Duct Duct Medium Static Pressure Duct High Static Pressure Duct Wall-mounted Ceiling & Floor 2.2 Outdoor Units Table 1-2.2: Outdoor unit appearance 8-18KW...

  • Page 8: Nomenclature

    3 Nomenclature 3.1 Outdoor Units SDV6 – E 120 B S SDV6 Sinclair – DC invertor variable Outdoor unit Cooling capacity (x100W) Refrigerant (R32) Side discharge...

  • Page 9: Combination Ratio

    4 Combination Ratio Sum of capacity indexes of the indoor units Combination ratio = Capacity index of the outdoor unit Table 1-4.1: Indoor and outdoor unit combination ratio limitations Type Minimum combination ratio Maximum combination ratio SDV6 Mini outdoor units 160% Table 1-4.2: Combinations of Indoor and outdoor units Outdoor unit capacity...

  • Page 10: Selection Procedure

    5 Selection Procedure 5.1 Procedure Step 1: Establish design conditions Design temperature and humidity (indoor and outdoor) Required heat load of each room System peak load Piping length, level differences Indoor unit specifications (type and quantity) Room(i) area Adjust the piping length, Mc≤12kg reduce the refrigerant charge Determine applicable standards...
  • Page 11 Provisionally select outdoor unit capacity based on combination ratio limitations Confirm that the number of indoor units connected to the outdoor unit is within limitation Correct cooling and heating capacities of the outdoor unit for the following items: 1. Room(i) with larger airflow Outdoor air temperature / Indoor air temperature WB / indoor units Combination ratio / Piping length, level difference / Piping...
  • Page 12 5.2 Example The following is a selection example based on total heat load for cooling. Figure 1-5.1: Room plan Room B (10m Room C(10m Room A (20m Room D(15m Step 1: Establish design conditions  Indoor air temperature 25°C DB, 18°C WB; outdoor air temperature 33°C DB. ...
  • Page 13 Step 2: Select indoor units  In this example, a safety factor is not used (i.e. the safety factor is 1).  Select indoor unit models using the medium static pressure duct cooling capacity table. Each indoor unit's corrected capacity needs to be greater than or equal to the peak load of the relevant room. The selected indoor units are shown in Table 1-5.3.
  • Page 14 Table 1-5.5: Combinations of Indoor and outdoor units Outdoor unit capacity Sum of capacity indexes of connected indoor units Capacity (standard indoor units only) index 40 to 115.2 45 to 144 12.3 61.5 to 196.8 14.0 70 to 224 15.5 77.5 to 248 17.5 87.5 to 280...
  • Page 15 that the outdoor unit is below the indoor unit. Calculate the corrected capacity of SDV6-E160BS (“C”) by using K1: C = B × K1 = 16.75 × 0.927 =15.53kW  The corrected capacity 15.53 kW is lower than required total heat load 16.5kW, so selection is complete. (In the event that the corrected capacity is lower than the required total heat load, Step 3 should be repeated from the point where the outdoor unit capacity is provisionally selected.) Step 4: R32 refrigerant solution recommendation...

  • Page 16: Refrigerant Circuits

    Part 2 Component Layout and Refrigerant Circuits 1 Piping Diagrams ..................16 2 Refrigerant Flow Diagrams ..............20...
  • Page 17 1 Layout of Functional Components 1.1 8-10kW layout of functional components Figure 2-1.1: 8-10kW layout of functional components Legend Parts name Compressor Oil separator High pressure switch High pressure sensor Check value Four-way valve (ST1) Heat exchanger Electronic expansion valve (EEVA) Plate heat exchanger Stop valve (liquid side) Stop valve (gas side)

  • Page 18: Piping Diagrams

    2 Piping Diagrams 2.1 8-10kW piping diagram Figure 2-1.1: 8-10kW Piping diagram Legend Parts name Parts name Compressor Electronic expansion valve (EEVC) Oil separator Low pressure sensor High pressure switch Gas-liquid separator High pressure sensor Sensor Code Description Check value Heat exchanger deicer temperature sensor Four-way valve (ST1) Outdoor air temperature sensor...
  • Page 19 2.2 12-18kW piping diagram Figure 2-1.2: 12-18 kW Piping diagram Legend Parts name Parts name Compressor Electronic expansion valve (EEVC) Oil separator Low pressure sensor High pressure switch Gas-liquid separator High pressure sensor Sensor Code Description Check value Heat exchanger deicer temperature sensor Four-way valve (ST1) Outdoor air temperature sensor Liquid pipe temperature sensor...
  • Page 20 Key components: 1. Oil separator: Separates oil from gas refrigerant pumped out of the compressor and quickly returns it to the compressor. Separation efficiency is up to 99%. 2. Gas-liquid separator: Stores liquid refrigerant and oil to protect compressor from liquid hammering. 3.

  • Page 21: Refrigerant Flow Diagrams

    3 Refrigerant Flow Diagrams 3.1 Cooling operation Figure 2-3.1: Refrigerant flow during cooling operation 3.2 Oil return operation in cooling mode Figure 2-3.4: Refrigerant flow during oil return operation in cooling mode...

  • Page 22: Heating Operation

    3.3 Heating operation Figure 2-3.7: Refrigerant flow during heating operation 3.4 Oil return operation in heating mode Figure 2-3.10: Refrigerant flow during oil return operation in heating mode (4-way Valve Keep in the same direction)

  • Page 23: Defrosting Operation

    Figure 2-3.10: Refrigerant flow during oil return operation in heating mode (4-way Valve change direction) 3.5 Defrosting operation Figure 2-3.13: Refrigerant flow during defrosting operation...
  • Page 24 Part 3 Control 1 General Control Scheme Flowchart ............24 2 Stop Operation ..................25 3 Standby Control ..................25 4 Startup Control ..................26 5 Normal Operation Control ..............27 6 Protection Control ................28 7 Special Control ..................30...

  • Page 25: General Control Scheme Flowchart

    1 General Control Scheme Flowchart Sections 3-2 to 3-7 on the following pages detail when each of the controls in the flowchart below is activated. Stop operation  Abnormal shutdown  System stop Standby control  Crankcase heater control Thermo on Startup control ...

  • Page 26: Stop Operation

    2 Stop Operation The stop operation occurs for one of the two following reasons: 1. Abnormal shutdown: in order to protect the compressors, if an abnormal state occurs the system makes a 'stop with thermo off' operation and an error code is displayed on the outdoor unit digital displays. 2.

  • Page 27: Startup Control

    4 Startup Control 4.1 Compressor Startup Delay Control When the ODU is powered on again and the compressor delays about 7 minutes to start. After the compressor stops running, it takes about 4 minutes to restart, in order to prevent frequent compressor on/off and to equalize the pressure within the refrigerant system.

  • Page 28: Normal Operation Control

    5 Normal Operation Control 5.1 Component Control during Normal Operation Table 3-5.1: Component control during normal cooling operation Wiring diagram Component 8~18kW Control functions and states label Inverter compressor COMP Controlled according to load requirement ● Fan speed controlled according to heat exchanger temperature DC fan motor (T3), outdoor ambient temperature (T4),discharge temperature ●...

  • Page 29: Protection Control

    6 Protection Control 6.1 High Pressure Protection Control This control protects the system from abnormally high pressure and protects the compressors from transient spikes in pressure. Figure 3-6.1: High pressure protection control Normal operation > 4.4MPa < 3.2MPa High pressure protection, error code P1 is displayed Notes: 1.
  • Page 30 6.4 Compressor and Inverter Module Protection Control This control protects the compressors from abnormally high currents and protects the inverter modules from abnormally high temperatures. Figure 3-6.4: Compressor current protection control Normal operation Current ≥ Current Current < Current Compressor current protection, error code P3 is displayed 6.5 Disable Cooling Control When the outdoor ambient temperature drops below or equal to -5°C，...

  • Page 31: Special Control

    7 Special Control 7.1 Oil Return Operation In order to prevent compressors from running out of oil, the oil return operation is conducted to recover oil that has flowed out of the compressor(s) and into the piping system. This operation is performed for all units including units that are in standby.
  • Page 32 7.2 Defrosting Operation In order to recover heating capacity, the defrosting operation is conducted when the outdoor unit heat exchanger is performing as an evaporator. The defrosting operation is controlled according to outdoor ambient temperature, outdoor heat exchanger temperature, indoor heat exchanger temperature and outdoor unit running time. When the outdoor unit is running in defrosting, the digital display on outdoor main PCB will display “df”.

  • Page 34: Wiring Diagrams

    Part 4 Electrical Components and Wiring Diagrams 1 Outdoor Unit Electric Control Box Layout ..........34 2 Outdoor Unit Main PCB ................. 36 3 Wiring Diagrams ..................41...

  • Page 35: Communication Terminals

    1 Outdoor Unit Electric Control Box Layout Figure 4-1.1: 8-10kW electric control box (compressor & fan drive board) PFC part PED part Filter part Figure 4-1.1: 8-10kW electric control box (main board) Communication terminals Figure 4-1.2: 8-10kW electric control box (power supply terminals)
  • Page 36 Figure 4-1.1: 12-18kW electric control box (compressor & fan drive board) PFC part PED part Filter part Figure 4-1.1: 12-18kW electric control box (main board) Communication terminals Figure 4-1.2: 12-18kW electric control box (power supply terminals)

  • Page 37: Outdoor Unit Main Pcb

    2 Outdoor Unit Main PCB 2.1 Ports Figure 4-1.1: Outdoor unit main PCB ports ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ Notes: 1. Label descriptions are given in Table 4-1.1. Table 4-1.1: Outdoor unit main PCB ports definition table Label in Port code Content...
  • Page 38 2.2 Components 2.2.1 Digital display output Outdoor unit state Parameters displayed on DSP1 Parameters displayed on DSP2 The number of indoor units in Standby The address of outdoor unit communication with the outdoor units Normal For single Running speed of the compressor in operation Compressor units rotations per second...
  • Page 39 2.2.3 System check button Before pressing UP or DOWN button, allow the system to operate steadily for more than an hour. On pressing UP or DOWN button, the parameters listed in below table will be displayed in sequence. Table 4-3.1 system check list: DSP1 content Parameters displayed on DSP2 Remarks...

  • Page 40: Oil Return

    Table 4-3.1 system check list (continue): DSP1 content Parameters displayed on DSP2 Remarks 34.-- Reserved 35.-- High pressure of unit Actual Pressure=DISP. /100 Unit: MPa 36.-- Low pressure of unit Actual Pressure=DISP. /100 Unit: MPa 37.-- Number of indoor units online Actual value=value displayed 38.-- Number of indoor units operating...
  • Page 41 Table 4-3.1 system check list (continue): DSP1 content Parameters displayed on DSP2 Remarks 53.-- Fan error 54.-- Software version 55.-- Most recent error or protection code 56.-- Reserved 57.-- Reserved 58.-- Reserved -- -- Notes: Need to convert to current compressor output volume. For example: compressor output volume is 42, Target frequency = Actual frequency * 42 /60.
  • Page 42 3 Wiring Diagrams Figure 4-3.1: Outdoor units wiring diagram Component code Description Component code Description COMP. Compressor Outdoor heat exchanger temperature sensor EEVA/C Electronic expansion valve Outdoor ambient temperature sensor DC Fan Liquid pipe temperature sensor H-PRO High pressure on/off switch Plate heat exchange outlet temperature sensor HEATA Crankcase heater...

  • Page 44: Troubleshooting

    Part 5 Diagnosis and Troubleshooting 1 Error Code Table ..................44 2 Error in Main Control ................48 3 Error in Compressor Driver ..............111 4 Error in Fan Drive ................... 124 5 Appendix ....................137...

  • Page 45: Error Code Table

    1 Error Code Table 1.1 Outdoor Error code table Table 5-1.1 Outdoor Error code table Manual re-start Error code Error description Remarks required Emergency shutdown Safety protection Indoor unit refrigerant leakage Safety protection Inverter driver board does not match the main control board System failure Refrigerant shut-off device error Safety protection...
  • Page 46 Manual re-start Error code Error description Remarks required Troubleshoot errors 1J-- Fan motor error, “--” refer to Table 5-1.4 Fan motor error code table according to the Service Manual 1J1* error occurs 10 times in 60 minutes, , “*” refer to Table 5-1.4 Fan motor 1J01 Power-on again error code table...
  • Page 47 1.2 Installation and debugging error code table Table 5-1.2 Installation and debugging error code table Manual re- Error code Error description Remarks start required Technology barrier System configuration Outdoor unit model is not set System configuration Outdoor unit capacity setting error System configuration System contains the old Indoor unit with old platforms System configuration...
  • Page 48 1.4 Fan motor error code table Table 5-1.4 Fan motor error code table Manual re-start Code Error description Remarks required2 1J1E Hardware overcurrent current overload 1J11 Software overcurrent error 1J12 Software overcurrent protection last 30s Over-temperature 1J2E Inverter module high temperature protection error 1J3E Low bus voltage error...
  • Page 49 2 Error in Main Control 2.1 A01: Emergency shutdown of Outdoor Units Digital display output Description  Compressor protection shut down  All Outdoor Units stop running  Error codes are displayed only on master uint. Trigger / recover condition Scenario 1: ODU menu item n28 is set to 0: ...
  • Page 50 Procedure One or both of the following If nC0 3, ignore port Input1 in the following troubleshooting are true: nC0 = 3 or nC1 = 3 If nC1 3, ignore port Input2 in the following troubleshooting Menu set item n28 = 0 未与消防开关相连...
  • Page 51 2.2 A11: Indoor unit refrigerant leakage Digital display output Description  Refrigerant leak detected in some indoor units  The fan of the indoor unit with refrigerant leakage is detected running at the highest air speed and the electronic expansion valve is closed (note: re-powering the unit does not lift the fault), while the buzzer on the display control board of the faulty indoor unit and the buzzer on the line control connected to the faulty indoor unit continuously chirp the alarm.
  • Page 52 liquid and/or gas service valve of the outdoor unit shut-off valve. Measure the refrigerant saturation gauge pressure in the field piping: (1). If the measured refrigerant saturation pressure on the liquid and/or gas side is less than the standard saturation pressure (refer to Table 5- 5.6 R32 Refrigerant Ambient Temperature vs.
  • Page 53 2.3 AA1: Inverter driver board does not match the main control board Digital display output Description  Inverter driver board does not match the outdoor unit  All units stop running.  Error code is displayed on the unit with the error Trigger / recover condition ...
  • Page 54 2.4 Ad1: Refrigerant shut-off device error Digital display output Description  Refrigerant shut-off device error  All units stop running.  The outdoor unit sends a shut-off command to the refrigerant shut-off device. Trigger / recover condition  Trigger condition: fault signal received from refrigerant shut-off device = ON ...
  • Page 55 2.5 C21: Communication error between IDU and ODU. Digital display output Description  Communication error between IDU and ODU  All units stop running.  Error code is only displayed on the master unit. Trigger / recover condition  Trigger condition: 1. 20 minutes after the outdoor unit is power on,the communication signal from the IDU cannot be received by ODU for two minutes 2.
  • Page 56 Procedure Select the correct communication protocol for the specific ODU interface, IDU interface, and IDU type according to Table 6.2.1. Is the communication In the table, "/" in the [Digital display output] indicates normal protocol correct? communication state; otherwise, correction is required according to the solution Select one of the following solutions Solution 1: Reset the address.
  • Page 57 2.6 C26 Abnormal reduction in the number of indoor units Digital display output Description  The number of online indoor units is smaller than the configured number  All units stop running.  Error code is only displayed on the master unit Trigger / recover condition ...
  • Page 58 Procedure Select one of the following solutions Is the IDU address Solution 1: Reset the address. In menu n44, set to [0] code not set or (automatic addressing)[1]. duplicated. Solution 2: Manually set the address of IDUs. After setting, ensure that the IDU addresses are not duplicated. Are all IDUs Power on all IDUs powered on?
  • Page 59 2.7 C28: Abnormal increase in the number of indoor units Digital display output Description  The number of online indoor units is greater than the configured number  All units stop running.  Error code is only displayed on the master unit Trigger / recover condition ...
  • Page 60 2.8 C2A: Communication error between outdoor unit and refrigerant shut-off device. Digital display output Description  Communication error between outdoor unit and refrigerant shut-off device.  All units stop running.  Shut-off device displays error code C2A, the outdoor unit displays error code Trigger / recover condition ...
  • Page 61 (5) The total length of communication wiring exceeds the standard requirements, the total length of P Q E communication L ≤ 1200m, the total length of M1M2 communication L ≤ 2000m; (6) The communication wiring is disturbed by strong electromagnetic wave Procedure According to Table 5.1-6, corresponding to the actual installation of ODU interface, shut-off device...
  • Page 62 2.9 1C41: Communication Error between main control board and inverter driver board Digital display output Description  The communication between the main control board and inverter driver board is error  All units stop running.  Error code is displayed on the unit with the error Trigger / recover condition ...
  • Page 63 Procedure Measure the ODU main power Eliminate the problems with L1/L2/L3. Is there phase loss or voltage the power supply accordingly failure? Measure the input voltage Is there circuit break, L1/L2/L3 after module rectification. Change the connecting misphase, or poor contact with the Is there phase loss or power supply cable connection wire?
  • Page 64 2.10 E41, F31, F41, F71, F91,FA1,FC1,xFd1: Temperature sensor error Digital display output Error code Error description Remarks Digital display output Outdoor ambient temperature sensor sensor error (T4) error(open/short) Microchannel heat exchanger outlet temperature sensor(T6B) sensor error error(open/short) Main heat exchanger pipe temperature sensor error sensor (T3) error(open/short) Discharge temperature sensor(T7C1)
  • Page 65 Procedure Sensor error Temperature sensor Ensure the sensor is connection on ODU mainBoard connected properly is loose[1] Temperature The main control Sensor has short-circuited board is damaged or failed[2][3] Replace the sensor Resume automatically Replace the main after 5S control board Fault cleared Notes: [1].The port on the main control board corresponding to the Temperature sensor refer to Table5.1.1: Outdoor unit main PCB ports definition table.
  • Page 66 2.11 EC1: Refrigerant leakage sensor error Digital display output Description  Refrigerant leakage sensor error  All units stop running.  The outdoor unit sends a shut-off command to the refrigerant shut-off device. Trigger / recover condition  Trigger condition: fault signal received from refrigerant shut-off device = ON ...

  • Page 67: Reset Method

    2.12 F62, F6A: Inverter driver board NTC overtemperature protection Digital display output Description  All outdoor units stop running  Error code is displayed on the outdoor unit with the error. Trigger/ Recover condition  Trigger condition: F62: The NTC temperature inside the compressor board or fan module is higher than 100 ° C F6A: F62 protection occurs 3 times in 100 minutes ...
  • Page 68 2.13 F63: Non-inductive resistance Tr overtemperature protection Digital display output Description  The temperature of the Tr non-inductive resistance NTC is too high.  All units stop running  Error code is displayed on the outdoor unit with the Error Trigger/ Recover condition ...
  • Page 69 2.14 F71: Discharge temperature sensor (T7C1) error Digital display output Description  T7C1 compressor discharge temperature sensor failure.  Judgment during start-up operation.  All units stop running.  Error code is displayed on the unit with the error Trigger / recover condition ...

  • Page 70: Trigger Condition

    2.15 F72, F7A: Discharge Temperature protection Digital display output Description  Discharge Temperature is over the limit.  All outdoor Unit stop running  Error code is displayed on the unit with the error Trigger / Recover condition  Trigger condition: F72: Discharge Temperature (T7C1/T7C2) ≥...
  • Page 71 Procdure F72/F7A Open the ODU check Is the ODU check valve closed? valve and power on. Does the error display again? Correctly connect the Is the piping and wiring piping and wiring, then power on. connected correctly? Does the error display again? Is the temperature of the discharge temperature Replace the main board...
  • Page 72 2.16 F75: Compressor discharge insufficient superheat protection Digital display output Description  Superheat degree of compressor discharge temperature is too low, triggering protection shutdown  Determination during operation of outdoor unit.  All units stop running.  The error code is displayed on the outdoor unit with error. Trigger / recover condition ...
  • Page 73 Procedure Correctly connect the Is the piping and wiring piping and wiring, then power on. Does connected correctly? the error display again? Figure I Do any of the following conditions occur? 1. T7C sensors are not Correctly connect T7C sensors to the connected to the compressor top compressor top and fix them with spring 2.
  • Page 74 2.17 P11: High pressure sensor error Digital display output Description  Open/short circuit error of high pressure sensor  All units stop running.  The error code is displayed on the Outdoor Unit with error. Trigger / recover condition  Trigger condition: The high pressure sensor is open-circuited (the output voltage is 0V) or short-circuited. ...
  • Page 75 2.18 P12/P14: High pressure protection Digital display output Description  P12: The high pressure is over the limit.  P14: 3 times P12 in 100 minutes  All units stop running  Error code is displayed on the unit with the Error Trigger / recover condition ...
  • Page 76 Procedure Enter the MENU vacuum Is the high pressure mode (n15) after power off. Wait for value measured for the main board Replace the main 1min. Are the HP and LP pressures normal after the pressure sensor board close, and troubleshooting? is unplugged? [1] If the HP pressure is too high, preferably check the following items.
  • Page 77 2.19 P13: High pressure switch protection Digital display output Description  All units stop running  Error code is displayed on the unit with the Error Trigger / recover condition  Trigger condition: discharge pressure≥ 4.1MPa or the switch is open-circuited. ...
  • Page 78 2.20 P21: Low pressure sensor error Digital display output Description  Open/short circuit Error in suction pressure sensor  All units stop running.  Error code is only displayed on the unit with the error. Trigger / recover condition  Trigger condition: P ＜0.02MPa or P ＞2.1MPa (including sensor open circuit).
  • Page 79 2.21 P22/P25: Low pressure protection Digital display output Description  P22: Low pressure protection;  P25: Low pressure protection occurs 3 times in 60 min.  All units stop running.  Error code is displayed on the unit with the error. Trigger/ Recover condition ...
  • Page 80 Procedure P22/P25 Enter the MENU vacuum Is the low pressure mode (n15) after power off. Wait for value measured for the main board Replace the main 1min. Are the HP and LP pressures normal after the pressure sensor board close, and troubleshooting? is unplugged? [1] If the LP pressure is too low, preferably check the following items.
  • Page 81 2.22 P24: Low Pressure too High Protection Digital display output Description  All units stop running.  ODU fault is determined based on the sensor.  Error code is displayed on the unit with the error Trigger/ Recover condition  Trigger condition: Suction pressure >1.6MPa and lasts 60 minutes ...
  • Page 82 Procedure Is the pressure of the detection The main board is valve during s teady Is the main board pressure normal? [3] damaged. Rep lace it operation 1.6 MPa? [1] Measure the pressure and voltage of the pressure sensor. Contact the after-sales There may be 3 co nditio ns for the sys tem: Do they satisfy sensor ch aracteristics? engineer...
  • Page 83 2.23 1P32, 1P33: Compressor high DC bus current protection Digital display output Description  The DC bus current of compressor is too high, triggering protection shutdown  All units stop running.  Error code is displayed on the unit with the error. Trigger / recover condition ...
  • Page 84 Procedure 1P32，1P33 Open ODU stop ODU stop valve is closed? valve compressor cable is Replacing the damaged compressor Cable The resistance of The compressor is the compressor wiring damaged. Replace terminals to the ground is the compressor less than 1 MΩ Measure the resistance between the windings of the compressor Short or open?
  • Page 85 2.24 P51: High AC voltage protection Digital display output Description  The AC voltage of the system is too high, triggering the protection shutdown  All units stop running  Error code is displayed on the unit with the error. Trigger / recover condition ...
  • Page 86 2.25 P52: Low voltage protection Digital display output Description  The AC voltage of the system is too low, triggering the protection shutdown  All units stop running.  Error code is displayed on the unit with the error Trigger / recover condition ...
  • Page 87 2.26 P53: Phase B and N of the power cable are connected to the opposite protection Digital display output Description  System phase and neutral wires are connected reversely and fail the inspection  All units stop running  Error code is displayed on the unit with the error Trigger / recover condition ...
  • Page 88 2.27 P54: DC bus low voltage protection Digital display output Description  The DC bus voltage of the compressor is too low  All units stop running.  Error code is displayed on the unit with the error Trigger / recover condition ...
  • Page 89 2.28 P55: DC bus ripple over protection Digital display output Description  The ripple of the DC bus on the module is over the limits.  All units stop running.  Error code is displayed on the unit with the error Trigger / recover condition ...
  • Page 90 2.29 1P56: No.x inverter driver board DC bus voltage is too low Digital display output Description  Inverter driver board DC bus voltage is too low  All units stop running.  Error code is displayed on the unit with the error Trigger / recover condition ...
  • Page 91 2.30 1P57: No.x inverter driver board DC bus voltage is too high Digital display output Description  Inverter driver board DC bus voltage is too high  All units stop running.  Error code is displayed on the unit with the error Trigger / recover condition ...
  • Page 92 2.31 P58: Inverter driver board DC bus voltage is seriously too high Digital display output Description  Inverter driver board DC bus voltage is seriously too high  All units stop running.  The error is displayed separately on each Outdoor Unit. Trigger / recover condition ...
  • Page 93 2.32 P5d: Supercapacitor voltage over rated operational voltage Digital display output Description  Supercapacitor voltage is seriously too high  All units stop running.  Shut-off device displays error code P5d, the outdoor unit displays error code Trigger / recover condition ...
  • Page 94 2.33 P5E: Supercapacitor voltage lower than rated operational voltage Digital display output Description  Supercapacitor voltage is seriously too low  All units stop running.  Shut-off device displays error code P5E, the outdoor unit displays error code Trigger / recover condition ...
  • Page 95 2.34 P71: Error in EEPROM Digital display output Description  The EEPROM parameter of the shut-off device main control board is incorrect  All units stop running.  Shut-off device displays error code Trigger / recover condition  Trigger condition: EEPROM parameter verification is incorrect ...
  • Page 96 2.35 Pb1: HyperLink overcurrent error Digital display output Description  HyperLink overcurrent error  All units stop running.  Error code is displayed on master ODU. Trigger / recover condition  Trigger condition: The M1M2 communication wiring is short-circuited, or M1M2 is connected to the 485 communication port by mistake ...
  • Page 97 2.36 1b01, 3b01: The electronic expansion valve is in error Digital display output Description  Leakage of electronic expansion valve No. x (x: 1/3 corresponding to expansion valve A/C respectively)  All units stop running  Error code is displayed on outdoor unit. Trigger / recover condition ...
  • Page 98 Notes: [1] All models of ODU have electronic expansion valves A and C, which are connected to the main boards CN70 and CN72. EEVA EEVC [2] Schematic diagram of coil resistance measurement of electronic expansion valve and reference range of resistance The coil Valve A/C Measurement point...
  • Page 99 2.37 3b01: The electronic ball valve is in error Digital display output Description  All units stop running  Shut-off device displays error code 3b01, the outdoor unit displays error code Trigger / recover condition  Trigger condition: main control cannot detect the signal of electronic expansion valve within 2 minutes. ...
  • Page 100 Notes: [1] All models of ODU have electronic ball valves A and B, which are connected to the main boards CN30 and CN31. [2] Schematic diagram of coil resistance measurement of electronic ball valve and reference range of resistance The coil Valve A/B Measurement point Resistance...
  • Page 101 2.38 U11: Outdoor unit model is not set Digital display output Description  All units stop running  Error code is displayed on the unit with the error Trigger / recover condition  Trigger condition: The model information is not set. ...
  • Page 102 2.39 U12: Outdoor unit Capacity setting error Digital display output Description  The capability information of outdoor unit is not set  All units stop running  Error code is displayed on the unit with the Error Trigger / recover condition ...
  • Page 103 2.40 U21: The indoor unit connection is incorrect Digital display output Description  Connected to the 1 generation indoor unit or 2 generation indoor unit or indoor unit address repeated in system  All Outdoor units stop running  Error code is displayed on the master unit Trigger / recover condition ...
  • Page 104 2.41 U31: The test run was never successful Digital display output Description  The system is not in the test run or the test run is unsuccessful  All units stop running  Error code is only displayed on the master unit. Trigger / Recover condition ...

  • Page 105: Temperature Range

    2.42 U32, U33, U34: The temperature is not suitable for test run Digital display output Description  During the test run, the indoor or outdoor temperature exceeds the operating range  All units stop running  Error code is only displayed on outdoor unit Trigger /Recover condition ...
  • Page 106 2.43 U35, U37: Stop valve is not open Digital display output Description  The outdoor unit stop valve is not opened during the test run.  All units stop running  Error code is only displayed on the master unit. Trigger/ Recover condition ...
  • Page 107 2.44 U38: Outdoor Unit has no address. Digital display output Description  Outdoor Unit has no address.  Outdoor Unit with error can not run.  Outdoor Unit with error cannot communicate with indoor units. Trigger / recover condition  Trigger condition: Outdoor unit address is not set ...
  • Page 108 2.45 U3A: The communication wiring is connected incorrectly Digital display output Description  Indoor unit piping and communication wiring are not connected in the same system.  All units stop running  Error code only displayed on the master unit. Trigger / Recover condition ...
  • Page 109 2.46 U3b: The installation environment is abnormal Digital display output Description  Ambient temperature of the test environment exceeds the allowed range during the test run  All units stop running  Error code only displayed on the master unit. Trigger / Recover condition ...
  • Page 110 2.47 U3C: Changeover mode error Digital display output Description  ODU in changeover mode doesn’t set the VIP IDU address.  ODUs stop running  Error code only displayed on the master unit. Trigger / Recover condition  Trigger condition: Outdoor unit in changeover mode, but the VIP address has not been set. ...
  • Page 111 2.48 U41: Overconnection ratio Digital display output Description  Protection Overconnection ratio  All units stop running Trigger / Recover condition  Trigger condition: Indoor unit exceeds the allowable connection range Connection ratio limitation: 45%≤A≤165% Computing method of connection ratio: Connection ratio A=total capacity of Online Indoor UnitA /total capacity of Outdoor Unit ...
  • Page 112 3 Error in Compressor Driver 3.1 1L1E: Hardware overcurrent Digital display output Description  The compressor current exceeds the protection value set for the hardware.  The compressor stops running after the error occurs. If the error disappears one minute later, the compressor starts again Trigger / recover condition ...
  • Page 113 3.2 1L11, 1L12 : Software overcurrent Digital display output Description  The compressor current exceeds the protection value set by the software.  The compressor will shutdowm when the error occurs. If the error disappears one minute later, the compressor will start again.
  • Page 114 3.3 1L2E: Module overtemperature protection Digital display output Description  The temperature of the compressor or fan drive board (IPM) exceeds the set value (100°C).  The compressor will stop when the error occurs. If the error disappears one minute later, the compressor will start again Trigger / recover condition ...
  • Page 115 3.4 1L3E: The bus voltage is too low Digital display output Description  The DC bus voltage of the drive board is lower than 350VDC.  The compressor stops running after the error occurs. If the error disappears one minute later, the compressor starts again.
  • Page 116 3.5 1L31: The bus voltage is too high Digital display output Description  Bus voltage is higher than the high bus voltage protection threshold set by the software (800VDC).  The compressor stops running after the error occurs. If the error disappears one minute later, the compressor starts again.
  • Page 117 3.6 1L32: The bus voltage is excessively high Digital display output Description  Bus voltage is higher than the high bus voltage protection threshold set by the software (820VDC).  The compressor stops running after the error occurs. If the error disappears one minute later, the compressor starts again.
  • Page 118 3.7 1L43: The current sampling bias is abnormal. Digital display output Description  The drive board is faulty upon the power-on self test.  Once this fault occurs, the compressor cannot be started up, and the drive board must be checked. Trigger / recover condition ...
  • Page 119 3.8 1L45: Motor Code Mismatch Digital display output Description  The compressor parameters set by the main control board do not match the compressor parameters of the drive board.  Once this fault occurs, the compressor cannot be started up, and the drive board must be checked. Trigger / recover condition ...
  • Page 120 3.9 1L46: Motor Code Mismatch Digital display output Description  IPM has overcurrent or IPM has drive undervoltage.  The compressor stops running after the error occurs. If the error disappears one minute later, the compressor starts again. Trigger / recover condition ...
  • Page 121 3.10 1L47: Motor Code Mismatch Digital display output Description  The compressor parameters set by the main control board do not match the compressor parameters, the driver board specifications set by the main control board do not match the compressor specifications of the drive board. Trigger / recover condition ...
  • Page 122 3.11 1L5E: Startup failed Digital display output Description  The compressor fails to start  The compressor stops running after the error occurs. If the error disappears one minute later, the compressor starts again. Trigger / recover condition  Trigger condition:The compressor fails to start ...
  • Page 123 3.12 1L52: Locked-rotor protection Digital display output Description  The compressor is blocked.  The compressor stops running after the error occurs. If the error disappears one minute later, the compressor starts again. Trigger / recover condition  Trigger condition: The compressor is blocked. ...
  • Page 124 3.13 1L6E: Compressor motor lack of phase protection Digital display output Description  Compressor motor lack of phase protection.  The compressor stops running after the error occurs. If the error disappears one minute later, the compressor starts again. Trigger / recover condition ...
  • Page 125 4 Error in Fan Drive 4.1 xJ1E: Hardware overcurrent Digital display output Description  The fan current exceeds the protection value set for the hardware.  The fan stops running after the error occurs. If the error disappears five seconds, the fan starts again Trigger / recover condition ...
  • Page 126 4.2 xJ11, xJ12: Software overcurrent Digital display output Description  The fan current exceeds the protection value set for the software.  The fan will stop when the error occurs. If the error disappears five seconds later, the fan will start again. Trigger / recover condition ...
  • Page 127 4.3 xJ2E: Module overtemperature protection Digital display output Description ℃  The internal temperature of the fan drive module (IPM) is higher than 100 Trigger / recover condition  Trigger condition:The temperature of the IPM exceeds 100 ℃  Recover condition: After an error occurs, the fan is shut down. The fan will recover five seconds later when the error ℃...
  • Page 128 4.4 xJ3E: The bus voltage is too low Digital display output Description  Bus voltage is lower than the low bus voltage protection threshold set by the software (350VDC).  The fan stops running after the error occurs. If the error disappears five seconds later, the fan starts again. Trigger / recover condition ...
  • Page 129 4.5 xJ31: The bus voltage is too high Digital display output Description  Bus voltage is higher than the high bus voltage protection threshold set by the software (750VDC).  The fan stops running after the error occurs. If the error disappears five seconds later, the fan starts again. Trigger / recover condition ...
  • Page 130 4.6 xJ32: The bus voltage is excessively high Digital display output Description  Bus voltage is higher than the high bus voltage protection threshold set by the software (770VDC).  The fan stops running after the error occurs. If the error disappears five seconds later, the fan starts again. Trigger / recover condition ...
  • Page 131 4.7 xJ43: The current sampling bias is abnormal Digital display output Description  The detection circuit of the drive board fails the power-on self test.  After this error occurs, the fan cannot start. Check whether the inverter driver board is in error. Trigger / recover condition ...
  • Page 132 4.8 J45 Motor Code Mismatch Digital display output Description  The compressor parameters set by the main control board do not match the compressor parameters of the drive board.  Once this fault occurs, the fan cannot be started up, and the drive board must be checked. Trigger / recover condition ...
  • Page 133 4.9 XL47: Motor Code Mismatch Digital display output Description  The fan parameters set by the main control board do not match the fan parameters, the driver board specifications set by the main control board do not match the fan specifications of the drive board. Trigger / recover condition ...
  • Page 134 4.10 xJ5E: Startup failed Digital display output Description  The fan fails to be started.  The fan stops running after the error. If the error disappears after five seconds, the fan starts again. Trigger / recover condition  Trigger condition: Fan startup failure. ...
  • Page 135 4.11 xJ52: Locked-rotor protection Digital display output Description  The fan is blocked.  The fan stops running after the error. If the error disappears after five seconds, the fan starts again. Trigger / recover condition  Trigger condition: The fan is blocked. ...
  • Page 136 4.12 xJ6E: Motor lack of phase protection Digital display output Description  The fan has phase loss protection.  The fan stops running after the error. If the error disappears after five seconds, the fan starts again Trigger / recover condition ...
  • Page 137 4.13 xJ65: Fan IPM Short Circuit Protection Digital display output Description  The fan is in IPM short circuit protection.  The fan stops running after the error. If the error disappears after five seconds, the fan starts again Trigger / recover condition ...
  • Page 138 5 Appendix 5.1 Resistance characteristics of temperature sensor Table 5-5.1: Temperature probe symbol and position Temperature probe symbol and position The probe type Bottom of heat exchanger Type A Outdoor ambient temperature Type A Liquid pipe stop valve Type A Heat exchanger intlet pipe Type A Inverter compressor A suction...
  • Page 139 (continues) Table 5-5.2: Temperature sensor temperature resistance characteristic table temperature resistance (kΩ) (°C) Type A Type B Type C 33.33 171.9 169.9 31.56 163.3 161.5 29.91 155.2 153.6 28.35 147.6 146.1 26.88 140.4 139.1 25.5 133.5 132.3 24.19 127.1 22.57 21.81 115.2 114.3...
  • Page 140 (continues) Table 5-5.2: Temperature sensor temperature resistance characteristic table temperature resistance (kΩ) (°C) Type A Type B Type C 4.387 24.85 24.85 4.213 23.89 23.9 4.046 22.89 22.98 3.887 22.1 22.1 3.735 21.26 21.26 3.59 20.46 20.47 3.451 19.69 19.7 3.318 18.96 18.97...
  • Page 141 (continues) Table 5-5.2: Temperature sensor temperature resistance characteristic table temperature resistance (kΩ) (°C) Type A Type B Type C 0.9366 5.488 5.492 0.9075 5.32 5.322 0.8795 5.157 5.159 0.8525 0.8264 4.849 4.855 0.8013 4.703 4.705 0.7771 4.562 4.566 0.7537 4.426 4.431 0.7312 4.294...
  • Page 142 (continues) Table 5-5.2: Temperature sensor temperature resistance characteristic table temperature resistance (kΩ) (°C) Type A Type B Type C 0.2777 1.632 0.2708 0.2641 0.2576 0.2513 0.2451...
  • Page 143 5.2 Normal status parameter of refrigerant system The parameters listed in Tables 5.2.3 need to be noted when the following conditions are met:  The master can detect all indoor machines:  The number of indoor units displayed for outdoor units is consistent with the actual installation. ...
  • Page 144 5.3 R32 refrigerant ambient temperature - saturation gauge pressure Temperature Pressure Pressure Temperature Pressure Pressure Temperature Pressure Pressure （℃） （℃） （℃） (KPa) (psi) (KPa) (psi) (KPa) (psi) -65.258 -9.4649 260.45 37.775 1543.5 223.87 -62.958 -9.1312 274.68 39.838 1588.3 230.36 -60.539 -8.7804 289.33 41.964...
  • Page 145 5.4 Inverter drive board measurement guidelines Please give priority to the following things before testing Inverter drive board: Cut off the power supply: To avoid electric shock from capacitor discharge, power off for 10 minutes and wait for capacitor discharge before operation: Remove all wiring on the Inverter drive board.
  • Page 146 Schematic diagram of measuring points of Inverter drive board:...

  • Page 148: Emergency Number

    United Kingdom www.sinclair-world.com This product was manufactured in China (Made in China). R E P R E S E N T A T I V E SINCLAIR Global Group s.r.o. Purkynova 45 612 00 Brno Czech Republic T E C H N I C A L S U P P O R T SINCLAIR Global Group s.r.o.

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