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Sinclair SCV-EB Series Service Manual

Air-cooled mini chiller unit
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AIR-COOLED
MINI CHILLER UNIT
SERVICE MANUAL
SCV-XXXEB / EB-3
AIR CONDITIONING

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Summary of Contents for Sinclair SCV-EB Series

  • Page 1 AIR-COOLED MINI CHILLER UNIT SERVICE MANUAL SCV-XXXEB / EB-3 AIR CONDITIONING...
  • Page 3 CONTENTS Part 1 General Information ................3 Part 2 Component Layout and Refrigerant Circuits ........5 Part 3 Control ....................11 Part 4 Diagnosis and Troubleshooting ............23...

  • Page 5: Part 1 General Information

    Part 1 General Information 1 Product lineup .................... 4 2 Nomenclature .................... 4...
  • Page 6 SCV-120EB 220-240/1 /50 SCV-140EB 220-240/1 /50 SCV-160EB 220-240/1 /50 SCV-120EB-3 380-415/3/50 SCV-140EB-3 380-415/3/50 SCV-160EB-3 380-415/3/50 2 Nomenclature Power Supply 3: 3-phase, 380-415V, 50Hz Refrigerant B: R32 Unit category E: Outdoor unit Capacity index The capacity in 0,1*kW Variable Chiller Sinclair...

  • Page 7: Part 2 Component Layout And Refrigerant Circuits

    Part 2 Component Layout and Refrigerant Circuits 1 Layout of Functional Components .............. 6 2 Piping Diagrams ..................9...
  • Page 8 1 Layout of Functional Components SCV-50EB / SCV-70EB / SCV-100EB High pressure switch Safety valve Pump Low pressure switch Plate heat exchanger Compressor Electronic expansion valve Water flow switch Air purge valve 4-way valve Pressure sensor Expansion vessel...
  • Page 9 SCV-120EB / SCV-140EB / SCV-160EB High pressure switch Safety valve Pump Low pressure switch Plate heat exchanger Compressor Electronic expansion valve Water flow switch Air purge valve 4-way valve Pressure sensor Expansion vessel...
  • Page 10 SCV-120EB-3 / SCV-140EB-3 / SCV-160EB-3 High pressure switch Safety valve Pump Low pressure switch Plate heat exchanger Compressor Electronic expansion valve Water flow switch Air purge valve Pressure sensor Expansion vessel 4-way valve...
  • Page 11 2 Piping Diagrams Refrigerant piping graphic example: High temperature, high pressure gas High temperature, high pressure liquid Low temperature, low pressure gas Low temperature, low pressure gas liquid mixture Heating and DHW mode ⑨ ⑩ ⑨ ④ ③ ⑦ ② ⑥...
  • Page 12 Legend Compressor Refrigerant gas pipe temperature sensor(T2B) Discharge temperature sensor(Tp) Pressure sensor High pressure switch Suction temperature sensor(Th) 4-way valve Low pressure switch Ambient temperature sensor(T4) Water outlet temperature sensor(Tw_out) Air side heat exchanger Water inlet temperature sensor(Tw_in) Expansion vessel Air side heat exchanger temperature sensor(T3) Pump Strainer...

  • Page 13: Table Of Contents

    Part 3 Control 1 Stop operation ..................12 2 Standby control ..................12 3 Startup control ..................13 4 Normal operation control ................ 14 5 Protection control ..................16 6 Special control ..................19...

  • Page 14: Stop Operation

    1 Stop operation The stop operation occurs for one of the 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 PCB digital displays and on the user interface. 2.

  • Page 15: Startup Control

    3 Startup control 3.1 Compressor sdtartup delay control In initial startup control and in restart control (except in oil return operation and defrosting operation), compressor startup is delayed such that a minimum of the set re-start delay time has elapsed since the compressor stopped, in order to prevent frequent compressor on/off and to equalize the pressure within the refrigerant system.

  • Page 16: Normal Operation Control

    3.4 Startup control for cooling operation Component Wiring diagram label 5~16kW Control functions and states Inverter compressor COMP Compressor startup program selected according to ambient temperature ● DC fan motor Fan run at maximum speed ● Position (steps) from 0 (fully closed) to 480 (fully open), controlled Electronic expansion valve according to outdoor ambient temperature, discharge temperature, suction ●...
  • Page 17 During heating operation, the four-way valve is on; during cooling and defrosting operations, the four-way valve is off. 4.6 Electronic expansion valve control The position of the electronic expansion valve (EXV) is controlled in steps from 0 (fully closed) to 480 (fully open/standby position).

  • Page 18: Protection Control

    5 Protection control 5.1 High pressure protection control This control protects the refrigerant system from abnormally high pressure and protects the compressor from transient spikes in pressure. Normal operation > 4.3MPa < 3.2MPa High pressure protection, error code P1 is displayed Notes: : Discharge pressure When the discharge pressure rises above 4.3MPa the system displays P1 protection and the unit stops running.
  • Page 19 5.3 Discharge temperature protection control This control protects the compressor from abnormally high temperatures and transient spikes in temperature. Normal operation Tp > 115°C Tp < 95°C High discharge temperature protection, error code P4 is displayed When the discharge temperature rises above 115°C the system displays P4 protection and the unit stops running. When the discharge temperature drops below 95°C, the compressor enters re-start control.
  • Page 20 5.5 Voltage protection control This control protects the heat pump from abnormally high or abnormally low voltages. Normal operation Voltage ≥ 265V or Voltage ≤ 172V 180V < Voltage < 256V for 30s Compressor voltage protection, error code H7 is displayed When the phase voltage of AC power supply is at or above 265V, the system displays H7 protection and the unit stops running.

  • Page 21: Special Control

    5.8 Module temperature protection control This control protects the module from abnormally high temperatures Module Temperature Protection Control Normal operation Module temperature ≥ Tf2 Module temperature ≤ Tf0-1°C Module Temperature Protection, error code C7 is displayed When the module temperature rises at or above Tf2 the system displays C7 protection and the unit stops running. When the module temperature drops at or below Tf0-1, the compressor enters re-start control.
  • Page 22 6.2 Defrosting operation In order to recover heating capacity, the defrosting operation is conducted when the air side heat exchanger is performing as a condenser. The defrosting operation is controlled according to outdoor ambient temperature, air side heat exchanger refrigerant outlet temperature and the compressor running time. Component control during defrosting operation Component Wiring diagram label...
  • Page 23 6.5 Balance tank temperature control Balance tank temperature sensor is used to control on/off of heat pump. Once the heat pump stops, internal pump stops to save energy and then balance tank provides hot water for space heating. In addition, balance tank temperature control can meet both space heating and domestic hot water needs at the same time.

  • Page 25: Part 4 Diagnosis And Troubleshooting

    Part 4 Diagnosis and Troubleshooting 1 Electric wiring diagram ................24 2 Electric Control Box Layout ............... 29 3 PCB ......................32 4 Error Code Table ..................40 5 Troubleshooting ..................42 6 USB data transfer ..................86 7 Network Configuration Guidelines ............88 8 Temperature Sensor Resistance Characteristics ........

  • Page 26: Electric Wiring Diagram

    1 Electric wiring diagram SCV-50EB / SCV-70EB / SCV-100EB SCV-120EB / SCV-140EB / SCV-160EB...
  • Page 27 Version: D DIP switch settings Switch ON=1 OFF=0 Default factory setting 0/0=Model 1 Hydro system...
  • Page 28 1/0=Model 2 0/1=Model 3 1/1=Model 4 0/0=Without backup heater 0/1=With backup heater(One step control) 1/0= With backup heater(Two step control) 1/1= With backup heater(Three step control) Reserved 0/0=variable speed pump 1 0/1=variable speed pump 2 1/1=variable speed pump 3 1/0=constant speed pump 0/0/0=address 0#(master units) 1/0/0=address 1#(slave units) 0/1/0=address 2#(slave units)
  • Page 29 SCV-120EB-3 / SCV-140EB-3 / SCV-160EB-3 Version: D...
  • Page 30 DIP switch settings Switch ON=1 OFF=0 Default factory setting 0/0=Model 1 1/0=Model 2 0/1=Model 3 1/1=Model 4 0/0=Without backup heater 0/1=With backup heater(One step control) 1/0= With backup heater(Two step control) 1/1= With backup heater(Three step control) Reserved 0/0=variable speed pump 1 0/1=variable speed pump 2 Hydro system 1/1=variable speed pump 3...

  • Page 31: Electric Control Box Layout

    2 Electric Control Box Layout SCV-50EB / SCV-70EB / SCV-100EB Inverter module Refrigerant system PCB Hydro system PCB...
  • Page 32 SCV-120EB / SCV-140EB / SCV-160EB Inverter module Refrigerant system PCB Hydro system PCB...
  • Page 33 SCV-120EB-3 / SCV-140EB-3 / SCV-160EB-3 Reactor Inverter module Refrigerant system PCB Hydro system PCB Filter board...

  • Page 34: Pcb

    3 PCB 3.1 Hydro system PCB SCV-50EB / SCV-70EB / SCV-100EB SCV-120EB / SCV-140EB / SCV-160EB SCV-120EB-3 / SCV-140EB-3 / SCV-160EB-3 10 11 Label Port Code Content Voltage(V) CN21 POWER Port for power supply 220VAC Port for ground CN28 PUMP Port for variable speed pump power input 220VAC CN25...
  • Page 35 TW_in Port for temperature sensors of inlet water temperature of plate heat exchanger 5VDC TW_out Port for temperature sensors of outlet water temperature of plate heat exchanger 5VDC Port for temperature sensors of final outlet water temperature 5VDC CN24 Port for temperature sensor of balance tank 5VDC CN23 Port for humidity sensor...
  • Page 36 3.2 Refrigerant system PCB SCV-50EB / SCV-70EB / SCV-100EB SCV-120EB / SCV-140EB / SCV-160EB SCV-120EB-3 / SCV-140EB-3 / SCV-160EB-3...
  • Page 37 Label Port Content Voltage(V) Power input port from main control board 220VAC CN43 Port for communication with Inverter module 12VDC/5VDC CN18 Port for high pressure switch 3.3VDC CN17 Port for low pressure switch 3.3VDC Port for high pressure sensor 5VDC Port for TH temperature sensor 3.3VDC Port for TP temperature sensor...
  • Page 38 3.3 Inverter Module SCV-50EB / SCV-70EB / SCV-100EB Label Port Content Voltage(V) Compressor connection port U 380VAC Compressor connection port V 380VAC Compressor connection port W 380VAC CN32 Port for fan 380VAC CN10 Port for communication with main control board 12VDC CN12 Reserved...
  • Page 39 SCV-120EB / SCV-140EB / SCV-160EB Label Port Content Voltage(V) Compressor connection port U 380VAC Compressor connection port V 380VAC Compressor connection port W 380VAC CN32 Port for fan 380VAC CN10 Port for communication with main control board 12VDC CN12 Port for high pressure switch 12VDC CN22 PED board...
  • Page 40 SCV-120EB-3 / SCV-140EB-3 / SCV-160EB-3 Label Port Content Voltage(V) Compressor connection port W 380VAC Compressor connection port V 380VAC Compressor connection port U 380VAC CN39 Port for voltage detection 380VAC CN15 Power Input port L3 380VAC Power Input port L2 380VAC Input port P_out for IPM module 540VDC...
  • Page 41 Port for communication with DC FAN 380VAC CN12 Port for high pressure switch 10VDC 3.4 Filter board SCV-120EB-3 / SCV-140EB-3 / SCV-160EB-3 Label Port Content Voltage(V) CN202 Power supply L1 380VAC CN201 Power supply L2 380VAC CN200 Power supply L3 380VAC CN203 Power supply N...

  • Page 42: Error Code Table

    Port for ground wire 3.5 Digital Display Output Outdoor unit state Parameters displayed on refrigerant system DSP1 On standby Running speed of the compressor in rotations per Normal operation second Error or protection Error or protection code 4 Error Code Table Error code Serial number Content...
  • Page 43 Low pressure switch protection High pressure switch protection Compressor overcurrent protection Compressor discharge temperature too high protection |Tw_out-Tw_in| value too big protection Anti-freeze mode High temperature protection of air side heat exchanger temperature(T3). | Tw_out-Tw_in | abnormal protection Inverter or compressor protection DC bus low voltage protection DC bus high voltage protection Current sampling error of PFC circuit...

  • Page 44: Troubleshooting

    5 Troubleshooting 5.1 Warning Warning  All electrical work must be carried by competent and suitably qualified, certified accredited professionals and in accordance with all applicable legislation (all national, local and other laws, standards, codes, rules, regulations and other legislation that apply in a given situation). ...
  • Page 45 5.2 bA Troubleshooting 5.2.1 Digital display output 5.2.2 Description  Outdoor temperature exceeds the operation temperature range  Heat pump stops running.  Error code is displayed on the refrigerant system PCB digital tube and user interface. 5.2.3 Procedure The setting value of T4MAX or T4MIN is Adjust the setting value according to the out of operation range operation range...
  • Page 46 5.3 C7 Troubleshooting 5.3.1 Digital display output 5.3.2 Description  High temperature protection of inverter module  Heat pump stops running.  Error code is displayed on the refrigerant system PCB digital tube and user interface. 5.3.3 Procedure Power supply voltage is too high or too Adjust the power supply and make sure the power supply is stable Install the heat pump in the place with...
  • Page 47 5.4 E0, E8 Troubleshooting 5.4.1 Digital display output 5.4.2 Description  Water flow failure.  E0 indicates E8 has displayed 3 times. When an E0 error occurs, a manual system restart is required before the system can resume operation.  Heat pump stops running. ...
  • Page 48 5.5 E1 Troubleshooting 5.5.1 Digital display output 5.5.2 Description  Phase sequence error.(Only applies to 3-phase models)  Heat pump stops running.  Error code is displayed on the refrigerant system PCB digital tube and user interface.. 5.5.3 Procedure The phase sequence of the 3-phase Exchange any two of the 3 phase wires power supply is incrorrect Ensure all supply terminals are securely...
  • Page 49 5.6 E2 Troubleshooting 5.6.1 Digital display output 5.6.2 Description  Communication error between hydro system PCB and user interface.  Heat pump stops running.  Error code is displayed on the refrigerant system PCB digital tube and user interface. 5.6.3 Procedure Communication wires HA HB have short circuited, disconnected or are...
  • Page 50 5.7 E3, H2, H3, Ed, HA, H5, H9 Troubleshooting 5.7.1 Digital display output 5.7.2 Description  E3 indicates total outlet water temperature sensor(T1) malfunction  H2 indicates liquid refrigerant temperature sensor(T2) malfunction  H3 indicates gas refrigerant temperature sensor(T2B) malfunction ...
  • Page 51 5.7.3 Procedure E3 / H2 / H3 / Ed / HA / H5 / H9/ Eb / E7 Temperature sensor is not installed Installed the temperature sensor Temperature sensor connection on hydro Ensure the sensor is connected properly system PCB is loose Temperature sensor is affected by Dry the sensor moisture or water...
  • Page 52 5.8 E5, E6, E9, EA Troubleshooting 5.8.1 Digital display output 5.8.2 Description  E5 indicates air side heat exchanger temperature sensor (T3)malfunction  E6 indicates outdoor ambient temperature sensor error  E9 indicates suction temperature sensor(Th) malfunction  EA indicates discharge temperature sensor(Tp) malfunction ...
  • Page 53 5.9 EE Troubleshooting 5.9.1 Digital display output 5.9.2 Description  Hydronic system EEPROM error.  Heat pump stops running.  Error code is displayed on the refrigerant system PCB digital tube and user interface. 5.9.3 Procedure Hydronic system EEPROM is not Ensure the EEPROM is connected connected properly properly...
  • Page 54 5.10 F1 Troubleshooting 5.10.1 Digital display output 5.10.2 Description  DC bus low voltage protection  Heat pump stops running.  Error code is displayed on the refrigerant system PCB digital tube and user interface. 5.10.3 Procedure Power supply is abnormal. Provide normal power Wiring between IPM module Ensure the wiring is right...
  • Page 55 5.11 F6 Troubleshooting 5.11.1 Digital display output 5.11.2 Description  EXV1 fault  Heat pump stops running.  Error code is displayed on the refrigerant system PCB digital tube and user interface. 5.11.3 Procedure The EEV1 connector of the refrigerant Ensure the connection is well system PCB is loose or not inserted Replace the coil of electronic expansion...
  • Page 56 5.12 H0 Troubleshooting 5.12.1 Digital display output 5.12.2 Description  Communication malfunction between main control board and hydraulic module board  Heat pump stops running.  Error code is displayed on the refrigerant system PCB digital tube and user interface. 5.12.3 Procedure PQE plug on the PCB is loose...
  • Page 57 5.13 H1 Troubleshooting 5.13.1 Digital display output 5.13.2 Description  Communication malfunction between main control board and inverter board  Heat pump stops running.  Error code is displayed on the refrigerant system PCB digital tube and user interface..  5.13.3 Procedure The digital tube of refrigerant system PCB...
  • Page 58 5.14 H4 Troubleshooting 5.14.1 Digital display output 5.14.2 Description  H4 indicates three times L0 protection in one hour  Heat pump stops running.  Error code is displayed on the refrigerant system PCB digital tube and user interface.. 5.14.3 Procedure Refer to P6 trouble shooting.
  • Page 59 5.15 H6, HH Troubleshooting 5.15.1 Digital display output 5.15.2 Description  H6 indicates a DC fan error.  HH indicates that H6 protection has occurred 10 times in 2 hours. When an HH error occurs, a manual system restart is required before the system can resume operation. ...
  • Page 60 5.16 H7 Troubleshooting 5.16.1 Digital display output 5.16.2 Description  H7 indicates Voltage protection  Heat pump stops running.  Error code is displayed on the refrigerant system PCB digital tube and user interface.. 5.16.3 Procedure Power supply voltage is not within ±10% of rated voltage or a (on 3-phase models) Provide normal power supply phase is missing...
  • Page 61 5.17 H8 Troubleshooting 5.17.1 Digital display output 5.17.2 Description  H8 indicates pressure sensor malfunction  Heat pump stops running.  Error code is displayed on the refrigerant system PCB digital tube and user interface.. 5.17.3 Procedure Pressure sensor connection Ensure the sensor is connected properly refrigerant system PCB is loose Pressure sensor has short-circuited or...
  • Page 62 5.18 Hb/PP Troubleshooting 5.18.1 Digital display output 5.18.2 Description  PP indicates | Tw_out-Tw_in | abnormal protection.  Hb indicate three times PP protection and Tw_out below 7 ℃  Heat pump stops running.  Error code is displayed on the refrigerant system PCB digital tube and user interface. 5.18.3 Procedure Hb/PP...
  • Page 63 5.19 Hd Troubleshooting 5.19.1 Digital display output 5.19.2 Description  Hd indicates communication malfunction between master unit and slave unit(Only apply for cascade application)  Heat pump stops running.  Error code is displayed on the refrigerant system PCB digital tube and user interface.. 5.19.3 Procedure SW9 DIP switch with wrong settings...
  • Page 64 5.20 HF Troubleshooting 5.20.1 Digital display output 5.20.2 Description  Inverter module board EE prom malfunction  Heat pump stops running.  Error code is displayed on the refrigerant system PCB digital tube and user interface. 5.20.3 Procedure Refrigerant system PCB DIP switch setting Adjust the DIP switch setting is wrong Refrigerant system EEPROM...
  • Page 65 5.21 P0, HP Troubleshooting 5.21.1 Digital display output 5.21.2 Description  P0 indicates Low pressure switch protection.  HP indicates Low pressure protection in cooling mode. When an HP error occurs, a manual system restart is required before the system can resume operation. ...
  • Page 66 Outlet water temperature sensor (Tw_out) / total outlet water temperature sensor(T1)/ balance tank Ensure the temperature sensors are temperature sensor(Tbt) connection on hydro system connected properly PCB is loose Pressure sensor has short-circuited or failed Replace pressure switch Replace refrigerant system PCB Notes: Low pressure switch connection is port CN17 on the refrigerant system PCB.
  • Page 67 5.22 P1 Troubleshooting 5.22.1 Digital display output 5.22.2 Description  High pressure switch protection  Error code is displayed on the refrigerant system PCB digital tube and user interface.. 5.22.3 Procedure Ensure the pressure switch is connected High pressure switch connection is loose properly Too much refrigerant is charged in the Release the right amount of refrigerant...
  • Page 68 Moisture in the system; The high pressure side is blocked : Filter The piping should be cleaned and the refrigerant system should be vacuumed or EXV is blocked by ice; crushed or bent pipe ;Impurities in the pipes Outlet water temperature sensor (Tw_out) / total outlet water Ensure the temperature sensors are temperature sensor(T1)/ balance tank...
  • Page 69 5.23 P3 Troubleshooting 5.23.1 Digital display output 5.23.2 Description  Compressor current protection.  Error code is displayed on the refrigerant system PCB digital tube and user interface.. 5.23.3 Procedure High pressure switch protection Refer to P1 trouble shooting The power supply is abnormal Check the power supply equipment Replace refrigerant system PCB Notes:...
  • Page 70 5.24 P4 Troubleshooting 5.24.1 Digital display output 5.24.2 Description  Compressor discharge temperature too high protection  Error code is displayed on the refrigerant system PCB digital tube and user interface.. 5.24.3 Procedure High pressure switch protection Refer to P1 trouble shooting Discharge temperature sensor Ensure the temperature sensor is connection on refrigerant system PCB is...
  • Page 71 5.25 P5 Troubleshooting 5.25.1 Digital display output 5.25.2 Description  |Tw_out-Tw_in| value too big protection  Heat pump stops running.  Error code is displayed on the refrigerant system PCB digital tube and user interface. 5.25.3 Procedure Inlet water temperature sensor (Tw_in), Ensure the temperature sensor is outlet water temperature sensor connected properly...
  • Page 72 Make sure the expansion vessel is not Broken expansion vessel broken. The water flow rate is not sufficient, Ensure maximum system head is caused by crushed or bent water piping, within pump head and flow rate range high resistance in water piping Replace hydro system PCB Notes: Inlet water temperature sensor (Tw_in) connection, outlet water temperature sensor (Tw_out) connection is port CN6 on the hydro system PCB.
  • Page 73 5.26 Pb Troubleshooting 5.26.1 Digital display output 5.26.2 Description  Anti-freeze mode protection.  Code is displayed on refrigerant system PCB and ANTI.FREEZE icon is displayed on user interface. 5.26.3 Procedure Anti-freeze is used to protect the water system from cracking during winter. It is normal protection operation and heat pump will return to the normal operation automatically.
  • Page 74 5.27 Pd Troubleshooting 5.27.1 Digital display output 5.27.2 Description  High temperature protection of air side heat exchanger refrigerant outlet in cooling mode. When the air side heat exchanger refrigerant outlet temperature is higher than 61°C for more than 3 seconds, the system displays Pd protection and heat pump stops running.
  • Page 75 5.28 Inverter module Troubleshooting for single-phase models 5.28.1 Digital display output 5.28.2 Description  L0 indicates Inverter or compressor protection L1 indicates DC bus low voltage protection L2 indicates DC bus high voltage protection L3 indicates current sampling error of PFC circuit L4 indicates rotating stall protection L5 indicates zero speed protection L7 indicates phase loss protection of compressor...
  • Page 76 Inverter Module(12-16KW): LED1 5.28.3 Principle of DC inverter Inductor Power Bridge Inverter Comp Contactor Capacitor supply rectifier module ressor (220V) ○, ○, ○, ①Contactor is open, the current across the PTC to charge capacitor. After 5 seconds, the contactor closed. ②220-240V AC power supply change to DC power supply after bridge rectifier.
  • Page 77 Replace the outdoor unit main PCB Notes: Connect the U V W wire from the inverter module to the correct compressor terminals, as indicated by the labels on the compressor. Measure the resistance between each of U, V and W and each of P and N on the inverter module. All the resistances should be infinite. If any of them are not infinite, the inverter module is damaged and should be replaced.
  • Page 78 Replace the inverter module Notes: Use clip-on ammeter to measure the compressor current, if the current is normal indicates the inverter module is failed, if the current is abnormal indicates the compressor is failed. When replacing an inverter module, a layer of thermally conductive silica gel should be painted on the PFC and IPM modules (on the reverse side of the inverter module PCB).
  • Page 79 Notes: When replacing an inverter module, a layer of thermally conductive silica gel should be painted on the IPM module, IGBT, diode, brigde rectifer (on the reverse side of the inverter module PCB). Situation 2: L1 or L2 error appears after the compressor has been running for a period of time and the compressor speed is over 20rps L1 /L2 Re-start the unit once the power supply...
  • Page 80 5.29 Inverter module Troubleshooting for three-phase models 5.29.1 Digital display output 5.29.2 Description  L0 indicates Inverter or compressor protection L1 indicates DC bus low voltage protection L2 indicates DC bus high voltage protection L3 indicates current sampling error of PFC circuit L4 indicates rotating stall protection L5 indicates zero speed protection L7 indicates phase loss protection of compressor...
  • Page 81 LED location of inveter module for three-phase 12~16kW unit 5.29.4 Principle of DC inverter Power Bridge Inverter module Inductor Supply Compressor Contactor Conpacitor rectifier (Vp-n: 540V DC) (380V AC) ② ○, ③ ○, ○, ① ① 380-415V AC power supply change to DC power supply after bridge rectifier. ②...
  • Page 82 5.29.5 L0 troubleshooting Situation 1: L0 error appears immediately after the compressor starts up DC bus wire is not connected properly Ensure DC bus wire is connected properly Compressor has malfunctioned Replace the compressor Replace the main PCB Notes: （ ）...
  • Page 83 Situation 2: L0 error appears within 2 seconds of compressor start-up Refer to the wiring diagram to reset the DIP Switch S1 setting is wrong S1 setting U V W wire between inverter module and Ensure U V W wire is connected properly compressor is not connected properly Communication port for connection to inverter module on refrigerant system...
  • Page 84 Condition 3: L0 error appears after the compressor has been running for a period of time and the compressor speed is over 60rps Refer to the wiring diagram to reset the DIP Switch S1 setting is wrong S1 setting Repaint the thermally conductive silica Inverter module has overheated gel on the PFC and IPM modules (on the reverse side of the inverter module PCB)
  • Page 85 5.29.6 L1/L2 troubleshooting The normal DC voltage between terminals P and N on inverter module is 540V. If the voltage is lower than 250V, the unit displays an L1 error; if the voltage is higher than 720V, the unit displays an L2 error. P, N terminals voltage = 540V DC normal...
  • Page 86 （ ） ； （ 、 ） P N +15V terminal-+15V IC8/5/6PIN5 IC/8/5 PIN3 +15V Check the +15V circuit according to corresponding wiring diagram. If IC8/5/6PIN5 on inverter module output voltage is not +15V means the inverter module is failed. If voltage output of inverter module is +15V means main PCB is failed. Check the bridge rectifier using one of the following two methods ...
  • Page 87 5.29.7 L4 troubleshooting Situation 1: L4/L0 error appears immediately after the outdoor unit is powered-on L4/L0 Replace the inverter PCB Condition 2: L4 error appears after the compressor has been running for a period of time and the compressor speed is over 60rps Compressor is over-current Replace the compressor...

  • Page 88: Usb Data Transfer

    After that, if parameter correction is needed, please connect the USB with computer and open the EXCEL file to change parameters and then save it. Please do not change the file name or format. Parameters are not allowed for non-professionals to change and Sinclair recommends to use the wired controller to change the parameters. Step 3: Plug USB disk into the port of hydro PCB of B unit and select “WRITE SET PARAMETER”...
  • Page 89 6.2 Convenient program upgrade for unit There is no need to carry any heavy equipment but only USB disk can realize program upgrade. Steps are as follows: Step 1: Copy new program in U disk root directory where other files in bin format are not allowed in Step 2: Power on and make sure communication is normal.

  • Page 90: Network Configuration Guidelines

    When the product is connected to the network, please make sure that the phone is as close as possible to the product. Sinclair only supports 2.4GHz band routers at present. Special characters (punctuation, spaces, etc.) are not recommended as part of the WLAN name. It is recommended that you connect no more than 10 devices to a single router lest home appliances are affected by weak or unstable network signal.
  • Page 91 Click on Sign Up and create a new account if you have never created an account of MSmartLife before . If you have already created an account before, login with the email and password. 7.3 Add device and login to home Wi-Fi Click on Add Device to add your Heat Pump Water Heater...
  • Page 92 Select the Central heating Water Heater Select the Wi-Fi in your home and type in the password for this Wi-Fi The App will automatically find out the controller, here the controller is KJRH-120F Check Operation Completed and click on “Next”...
  • Page 93 The wired controller realizes intelligent control with a built-in Wifi module, 7.4 Wired Controller Setting which receives control signal from the APP. The wired controller realizes intelligent control with a built-in Wifi module, Before connecting the WLAN, please check for it if the router in your Go to "MENU">...
  • Page 94 Go Back to the App , it will Click on “Complete” , once take some time for the app to Account binding finish up finished 7.4.2 Finishing up...
  • Page 95 It will show the Status as Online . Enter the device to control its settings...

  • Page 96: Temperature Sensor Resistance Characteristics

    8 Temperature Sensor Resistance Characteristics Outdoor ambient temperature sensor, water side heat exchanger refrigerant inlet / outlet (liquid / gas pipe) temperature sensor, air side heat exchanger refrigerant out temperature sensor and suction pipe temperature sensor resistance characteristics Temperature Resistance Temperature Resistance Temperature...
  • Page 97 Compressor discharge pipe temperature sensor resistance characteristics Temperature Temperature Temperature Temperature Resistance Resistance Resistance Resistance (kΩ) (kΩ) (kΩ) (kΩ) (°C) (°C) (°C) (°C) 542.7 68.66 13.59 3.702 511.9 65.62 13.11 3.595 483.0 62.73 12.65 3.492 455.9 59.98 12.21 3.392 430.5 57.37 11.79 3.296...
  • Page 98 Water side heat exchanger water inlet / outlet temperature sensor, final outlet water temperature sensor and DHW temperature sensor resistance characteristics Temperature Temperature Temperature Temperature Resistance Resistance Resistance Resistance (kΩ) (kΩ) (kΩ) (kΩ) (°C) (°C) (°C) (°C) 867.29 98.227 17.600 4.4381 815.80 93.634...

This manual is also suitable for:

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