Page 1 SERVICE MANUAL Aquantia XL KEM-50 DPS6 KEM-60 DPS6 KEM-70 DPS6...
Page 3 Aquantia XL CONTENTS Part 1 General Information ................3 Part 2 Component Layout and Refrigerant Circuits ........7 Part 3 Control and Field settings ............... 15 Part 4 Diagnosis and Troubleshooting ............59...
Page 4 Aquantia XL...
Page 5: General Information
Aquantia XL Part 1 General Information 1 Unit Capacities and External Appearance ........... 4 2 Water outlet temperature range ..............5...
Page 6 Aquantia XL 1 Unit Capacities and External Appearance Model KEM-50 DPS6 KEM-60 DPS6 KEM-70 DPS6 380-415V/3PH/50Hz Power supply Appearance...
Page 7 Aquantia XL 2 Water outlet temperature range Heating and cooling operating range HEATING Normal Temperature High Temperature T4/℃ Notes: Outdoor temp：Ambient temperature(℃) Water temp：Leaving water temperature(℃) If the unit is operating in the temperature range with shadow, the dial code S1-2 needs to be set to ON. The frequency conversion water pump...
Page 8 Aquantia XL COOLING Normal Temperature Low Temperature T4/℃ Notes: Outdoor temp：Ambient temperature(℃) Water temp：Leaving water temperature(℃) When the set temperature is less than 5℃, antifreeze liquid (concentration above 15%) should be added in the water system, otherwise the unit will be damaged.
Page 9: Refrigerant Circuits
Aquantia XL Part 2 Component Layout and Refrigerant Circuits 1 Layout of Functional Components .............. 8 2 Piping and Refrigerant Flow Diagrams ............10...
Page 10 Aquantia XL 1 Layout of Functional Components KEM-50 DPS6/ KEM-60 DPS6/ KEM-70 DPS6 Main parts of the unit Component Component Air outlet Heat exchanger Top cover Water outlet Electric control box Air inlet Compressor Water inlet Plate heat exchanger Wire controller (It can be placed indoors)
Page 11: Internal Structure
Aquantia XL Internal structure...
Page 12 Aquantia XL 2 Piping and Refrigerant Flow Diagrams Cooling operation...
Page 13: Heating Operation
Aquantia XL Heating operation...
Page 14: Symbol Description
Aquantia XL Legend Symbol Description Symbol Description Compressor EXVB Electronic Expansion Valve ST1-A/ST1-B Four-way valve Liquid receiver FAN A/B DC fan H-SW High-pressure switch Economizer H-YL High-pressure sensor Plate heat exchanger L-YL Low-pressure sensor Gas-liquid separator W-SW Water flow switch...
Page 15 Aquantia XL check valves Electronic expansion valve Throttling effect during cooling and UKV-H40DU14 4.0mm EXVB heating operation EXVB parallel connection Bypass function during heating DXF-41A check valves Liquid storage tank Storage of excess refrigerant ZYT-9.52*64*V1.1A 1.1L Plate exchange heating Heating for plate heat exchanger...
Page 16 4-way valve: To better control refrigerant flow, Aquantia XL series features an upgraded 4-way valve default position which remains closed in heating mode (no electrical signal) and open in cooling mode. When closed, the air-side heat exchanger functions as an evaporator and water side heat exchanger functions as a condenser;...
Page 17: Table Of Contents
Aquantia XL Part 3 Control and Field settings 1 Control Functions ..................16 2 Faults and Protection Functions ............... 31 3 Spot Checking Instructions & Normal Operating Parameters ....38 4 Table of Fault Codes ................. 41 5 Installation and Field Setting ..............44...
Page 18: Control Functions
Aquantia XL Control Functions Standby control Control of first start and restart after shutdown In order to prevent frequent start and stop of the compressor and balance the pressure inside the cooling system, the compressor shall be forcibly stopped for 7 min (except for special controls such as defrosting) before restart.
Page 19 Aquantia XL Cooling start control Component Name Electrical Symbol 50/60/70 Functions of Functional Components Non-standard component: After the water pump started for 1 minute and 45 s, the water flow switch is continuously detected. If Water pump PUMP the water flow switch is not closed, and the operation of the pump ●...
Page 20 Aquantia XL Heating starts frequency-raising control Heating/water heating start control Component Name Electrical Symbol 50/60/70 Functions of Functional Components Non-standard components: After the water pump is started for 1 minute and 45 s, the water flow switch is continuously detected. If...
Page 21: Normal Operation Control
Aquantia XL the following adjustments will be made: increase the frequency once every 60 seconds [Tim_Fqc_Up], and decrease the frequency once every 60 seconds [Tim_Fqc_Down]. Tw o Stop 停机 Tw s + 2 - 8H z Tw s + 1. 5...
Page 22: Shutdown Control
Aquantia XL operation. The opening is between 0 and 480P, which is controlled as per Electronic expansion valve EXV-A ● the superheat of the exhaust air. Electronic expansion valve EXV-B The opening is fixed at 480P. ● Enhanced vapor injection EXV, with an opening of 0-480P,...
Page 23: Defrosting Control
Aquantia XL Defrosting control To prevent poor heat exchange due to frosting of the heat exchanger (i.e. evaporator) of the outdoor unit during heating operation, defrosting is carried out through these control procedures to restore the heating capacity. Defrosting entry conditions: The parameters of the outdoor unit for defrosting entering and exiting include outdoor environmental temperature, temperature of the outdoor heat exchanger, inlet water temperature, operating time of the outdoor unit, and defrosting time of the outdoor unit.
Page 24 Aquantia XL when the minimum T3 is less than or equal to 35℃. This mode is set through the Wired Max≤Power_Silence_Max Silent mode Controller 50/60/70 kW: 70 Hz Super-silent This mode is set through the Wired Max≤Power_Silence_Max mode Controller 50/60/70 kW: 60 Hz...
Page 25 Aquantia XL Variable-frequency water pump control Input Control Logic Input Remarks: Machine address The machine containing the address 0# is the master unit, and the machine without the address 0# is the slave unit. Selection of variable-frequency water pump In case of S1-4=OFF, the control is of single variable frequency pump for...
Page 26 Aquantia XL Temperature difference control of variable frequency water pump Control of target water temperature difference 15≤Twi＜18℃ 18≤Twi＜25℃ ≥25℃ ＜15℃ Initial output of Variable-frequency Variable-frequency Variable-frequency Variable-frequency single water pump: max water pump: max water pump: max water pump: min...
Page 27 Aquantia XL Control of Compressors The control logic of the compressors includes “forced platform operation control + water temperature energy demand judgment and frequency increase + multiple frequency limiting controls”. The cooling forced platform is shown as follows The cooling water temperature energy demand frequency increase or decrease is shown as follows If the target frequency is higher than the corresponding forced platform during the energy demand frequency increase, it is necessary to run on the forced platform for a certain period of time;...
Page 28 Aquantia XL Control of Electronic Expansion Valves Control of EXVA EXVA remains at 480P during cooling The overall framework for control during heating operation is shown in the following figure: Different values will be distinguished for the initial opening based on the environmental temperature and water...
Page 29 Aquantia XL protection due to high exhaust temperature. Tcsc supercooling (condensation temperature -- plate heat exchanger tube temperature) control is a basic control, aimed at ensuring that EXVA is not turned off too small and ensuring the energy efficiency of the unit; different control target values are also distinguished based on the environmental temperature and water temperature frequency;...
Page 30 Aquantia XL temperature and water temperature frequency; when Tssh is less than the preset value, EXVB will turn down. Control of EXVC EXVC is an injection valve that may open for both cooling and heating. The standby opening is set to 0. After the compressor frequency is detected, and the conditions such as exhaust superheat etc.
Page 31 Aquantia XL Cooling Control & Heating Control Cooling Control: The initial air speed position is determined based on the environmental temperature The rotating speed is controlled through the high-pressure pressure Pc during operation. If Pc is too high, the air speed will increase;...
Page 32 Aquantia XL wired controller. Temperature Compensation Control Cooling Mode When the user enables this function on the wired controller, the parameters T4_cool_1, T4_cool_2, and offset_c are set. The machine updates the target water temperature every 5 minutes based on the detected T4 temperature. The target...
Page 33: Faults And Protection Functions
Aquantia XL Faults and Protection Functions In case of any fault and protection, the corresponding actions of different faults and protections are shown in the table below: Notes: The shutdown of the system means that all the parallel units have been stopped; the shutdown of a unit means that only the corresponding unit is stopped in case of any fault;...
Page 34: Temperature Sensor
Aquantia XL displayed for the main board. Two main boards are provided for such series of unties -- host and slave boards, which are connected through communication lines. When the communication between the main board and the slave board is unavailable for two minutes, the system controlled through the salve boards will shut down, and the fault code 3E2 will be displayed for the salve board.
Page 35 Aquantia XL unit, it can still be started and operate unless the shutdown of the unit is locked due to other faults or protections. When the fault occurs to T4 of all the units, the fault E7 is reported.
Page 36: Driver Module
Aquantia XL Driver module For the communication fault of the IPM module, the code 1F0 is displayed For the voltage fault of the busbar (PTC) (＜300V or ＞800V), the code 1F6 is displayed for the system. Notes: The voltage fault of the busbar (PTC) is detected through the PCB main board in the electrical assembly workshop or 30 s after power-on in the electronic control box detection mode.
Page 37 Aquantia XL is greater than or equal to 3.5 MPa, and the exhaust Tpmax is less than 15℃, lasting for 2 min, it can be judged as an exhaust temperature sensor failure fault, the corresponding system is stopped, and the exhaust temperature sensor failure fault EP is reported.
Page 38 Aquantia XL When Tdsh of the compressor of the unit during operation is greater than or equal to 75℃ and lasts for 30 min, the P1 shutdown shall be reported for the unit. The low refrigerant judgment is carried out. If the low refrigerant protection is not triggered, the P1 protection will be released, and the operation will be restarted as needed.
Page 39 Aquantia XL Low temperature antifreeze protection PE for cooling evaporator The code for low temperature protection of the cooling evaporator is PE, the low temperature protection for Taf2 is ineffective in the standby mode. Conventional cooling: In the cooling mode, if Taf2 is less than or equal to 3℃ and lasts for 3 s, the shutdown procedures shall be implemented, until Taf2 is greater than 10℃, and the shutdown time is...
Page 40: Spot Checking Instructions & Normal Operating Parameters
Aquantia XL Spot Checking Instructions & Operating Parameters Spot Checking Instructions List of spot checking (Spot checking can continue if there is no fault) The display instructions for the spot checking sequence are as follows: Serial Inspection Content Number Standby: Main unit address (left 88) + Online units (right 88),...
Page 41 Aquantia XL Second digital tube on the right: mute time selection (0-3) value depends on the line controller parameters 33.xx Static pressure selection (default 0 static pressure) 34.xx DC voltage A (actual value * 10) 35.xx DC voltage B (reserved display "--") Frequency limit number (reserved) (0: no frequency limit;...
Page 42 Aquantia XL Normal Operating Parameters of Refrigerant System Under the following conditions, the operating parameters given below should be observed: § If the outdoor ambient temperature is high, the system is being run in normal cooling mode with the following settings: temperature 5°C.
Page 43: Table Of Fault Codes
Aquantia XL Table of Fault Codes Main Control Model Error Phase Sequence Fault Host Wired Controller Communication Fault (displayed for the host)/Host and Slave Communication Fault (displayed for the slave) Main Control and Expansion Board 60s Communication Fault Communication Fault between Master and Slave Addresses within a Single Unit...
Page 44 Aquantia XL 1F6 Busbar Voltage Fault of System A Low-Pressure Pressure Sensor Fault Return Air Temperature Sensor Fault Fault of Fan 1 Inconsistent Dialing of Multiple Water Pumps Fault of Module 1 Hardware Overcurrent Protection (The fault code is only displayed for the wired controller, and not...
Page 45 Aquantia XL V-Phase Lower Tube Open Circuit (The fault code is only displayed for the wired controller, and not 1L6D displayed for the main board) W-Phase Upper Tube Open Circuit (The fault code is only displayed for the wired controller, and not...
Page 46: Installation And Field Setting
Aquantia XL Installation and Field Setting During installation, the unit’s settings and parameters should be configured by the installer to suit the installation configuration, climate conditions and end-user preferences. The relevant settings are accessible and programmable through the SERVICE and PROJECT menu on the wired controller’s user interface.
Page 47 Aquantia XL Service menu Structure For SERVICE Menu 1. STATE QUERY 1. STATE QUERY 2. CLEAR HSITORY ERRORS 3. SETTING ADDRESS 2. CLEAR HISTORY ERRORS 4. HEAT CONTROL CLEAR UNIT HISTORY ERRORS 5. TEMPERATURE COMPENSATION CLEAR ALL HISTORY ERRORS 6. PUMP CONTROL CLEAR LOCK ERRORR 7.
Page 48: Service Menu
Aquantia XL Service Menu MENU > Service Menu Service Menu allows installers to input the system configuration and set the system parameters. Enter the password, using ◄ ► to navigate between digits and using ▼ ▲ to adjust the numerical values, and then press .
Page 49 Aquantia XL STA TE Q U E RY STA TE Q U E RY STA TE Q U E RY İ TA F2 TE M P D E FRO STIN G STA TE CO M P TIM E 65535 H T5 TE M P 30 İ...
Page 50: Heat Control
Aquantia XL Setting address MENU > Service Menu > Setting address SE RV ICE M E N U CO N TRO LLE R STA TE Q U E RY A D D RE SS CLE A R H ISTO RY E RRO R...
Page 51 Aquantia XL TEMP-AUXHEAT1-ON sets the ambient temperature below which the pipe heater (field supplied) turns on. When the leaving water temperature does not reach TW. HEAT1-ON, the pipe electric heater (field supplied) turns on automatically. When the leaving water temperature reaches TW. HEAT1-OFF, the pipe electric heater (field supplied) turns off automatically.
Page 52: Pump Control
Aquantia XL Pump Control MENU > Service Menu > Pump Control PU M P CO N TRO L SE RV ICE M E N U FO RCE D PU M P O PE N TM E PE RA TU RE CO M PE N SA TI O N...
Page 53 Aquantia XL LO W O U T LE T W A T E R C T R L SE RV ICE M E N U M IN T E M P FO R C O O L 50İ T M E PE R A T U R E C O M PE N SA T IO N...
Page 54 Aquantia XL Energy saving mode MENU > Service Menu > Energy saving mode E N E RG Y SA V IN G SW ITCH SE RV ICE M E N U SA V IN G SW IT C H V A CU U M SW ITCH...
Page 55 Aquantia XL Project meun Structure 1. SET UNIT-AIRCONDITIONING For PROJECT Menu TWO_COOL_DIFF 1. SET UNIT-AIRCONDITIONING TWO_HEAT_DIFF 2. SET PARALLEL UNIT DT5_ON 3. SET UNIT PROTECTION DTIS5 4. SET DEFROSTING DtTws 5. SET DHW TIME 2. SET PARALLEL UNIT • SET E9 TIME TIM_CAP_ADJ 7.
Page 56 Aquantia XL t corresponding item and press “ ◄” or “ ►” to select restore or not. Press ” to back. Project Menu MENU > Project Menu SETTING Project Menu allows installers to input the system configuration and set the system parameters. Enter the password, using ntact us.
Page 57 Aquantia XL SET PARALLEL UNIT tting: MENU > Project Menu > SET PARALLEL UNIT RALLEL UNIT” and press “ ” to entr y. Display as follows: SE T PA PA LLE L U N IT TIM _CA P_A D J TW _CO O L_D IFF İ...
Page 58 Aquantia XL ≤ TWI_O_ABNORMAL – 1, error code disappears. For heating mode, if Twi – Two ≥ TWI_O_ABNORMAL and lasts for 20min, unit stops and error code PA appears. If Twi – Two ≤ TWI_O_ABNORMAL - 1, error code disappears.
Page 59 Aquantia XL HEAT MIN TIME sets the minimum operation time for heating mode when DHW requirement exists. DHW MIN TIME sets the minimum operation time for DHW mode. DHW MAX TIME sets the maximum operation time for DHW mode. SET E9 TIME ”...
Page 60 Aquantia XL Press "▲" or "▼" to select item to be set and press "◄ "or "►" to set value. Press " " to confirm. Back to homepage if there is no operation within 60s. Up to 16 historical setting records.
Page 61: Parameters Setting
Aquantia XL Parameters setting Parameters Setting range Default value Adjustment range t_frost 20 ~ 120 min 35 min 5min T_defrost_in -5~5℃ 0℃ 0.5℃ T_defrost_out -10~+10℃ 0℃ 0.5℃ Tim_Cap_adj 60~360s Two_cool_Diff 1℃~5℃ 2℃ 0.5℃ Two_heat_Diff 1℃~5℃ 2℃ 0.5℃ Tw_cool_Diff 1℃~5℃ 2℃...
Page 62 Aquantia XL Yes/No DHW ENABLE DHW SWITCH Yes/No DHW FIRST Yes/No COOL MIN TIME 0.5~24h 0.5h 0.5h 0.5~24h 0.5h COOL MAX TIME 0.5~24h 0.5h 0.5h HEAT MIN TIME HEAT MAX TIME 0.5~24h 0.5h DHW MIN TIME 0.5~24h 0.5h 0.5h DHW MAX TIME 0.5~24h...
Page 63 Aquantia XL Part 4 Diagnosis and Troubleshooting 1 Electric Control Box Layout ..............62 2 PCB Introduction ..................63 3 Wiring diagram ..................75 4 Check Code Table ..................82 5 Troubleshooting ..................84 6 Drive Module Failure ................127 7 Compressor replacement procedure ............
Page 64: Electric Control Box Layout
Aquantia XL 1 Electric Control Box Layout Lower layer of electric control box: Upper layer of electric control box：...
Page 65: Pcb Introduction
Aquantia XL 2 PCB Introduction 2.1 Types Aquantia XL series unit have one main control board, one compressor inverter module boards, one compressor module & fan driver board and one filter board, one fuse board, one expansion board. 2.2 Main PCB...
Page 66 Aquantia XL Port Port Content Voltage Code CN32 POWER Main board power supply 230VAC CN99 Slave board power supply 230VAC CN68 PUMP Reserved CN74/ Reserved/Crankcase Heater 230VAC CN67 CN75/ EVA-HE Reserved/Electronic heating belt for plate heat exchanger 230VAC CN66 CN48...
Page 67 Aquantia XL "ENC1:NET_ADDRESS ENC1 DIP switch 0-F of outdoor unit network address is enabled, which represent address DC3.3V 0-15." Dip switch DC3.3V Reserved DC3.3V Dip switch DC3.3V Dip switch DC3.3V PAN-HE CN69 Water tray electric heating belt 230VAC...
Page 68 Aquantia XL Main PCB field setting DIP switch, buttons and digital display positions of units. Fig. 2-1 Display positions Table 2-1...
Page 69 Aquantia XL...
Page 70 Aquantia XL Digital display output The data display area is divided into Up area and Down area, with two groups of two-digit half 7-segment digital display, respectively. a. Temperature display Temperature display is used for displaying the total outlet water temperature of unit system, outlet water temperature, condenser pipe temperature T3A of system A, condenser pipe temperature T3B of system B, outdoor environmental temperature T4, anti-freezing temperature T6 and setting temperature Ts, with allowable data display scope -15 ℃...
Page 71 Aquantia XL 2.3 Compressor Module Board & Fan Driver Board Compressor Inverter Module PCB component...
Page 72 Aquantia XL Port Code Port Content Voltage CN38 DC fan power output port DC565V CN26 19V GND Fan module board power supply port DC19V Port output for fan Phase to phase voltage PTC relay control port/communication port 46-460VAC O-Motor PTC relay control port/communication port...
Page 73 Aquantia XL 2.4 AC Filter Board Port Code Port Content Voltage Power input L1 Power input L2 AC380-415V Power input L3 Reserved CN15 L1L2L3 Reserved AC380-415V CN11 N A B C Reserved AC380-415V Output power L3' Output power L2' AC380-415V...
Page 74: Fuse Board
Aquantia XL 2.5 Fuse Board Front back Port Code Port Content Voltage Direction CN12 Fuse 1-1 208-230V AC Input CN15 Input power L3' 208-230V AC Input CN11 Fuse 2-1 208-230V AC Input CN14 Input power L2' 208-230V AC Input CN13...
Page 75: Expansion Board
Aquantia XL 2.6 Expansion Board Port Port Content Voltage Direction Code CN140 POWER Expansion board power supply 230VAC Input CN115 W-HEAT Electric heater of water flow switch 230VAC Output CN125 Three-way valve (hot-water valve) 230VAC Output CN123 PUMP Port controlled by the contactor of the constant speed water pump...
Page 76 Aquantia XL 2.7 PED board Order Code Port Content CN26 Connect to compressor & fan drive board PCB CN27 Connect to compressor & fan drive board PCB...
Page 77: Wiring Diagram
Aquantia XL 3 Wiring diagram 3.1 Single unit...
Page 78 Aquantia XL Normal control, Valid for S1-1 OFF (factory default) S1-1 Remote control, Valid for S1-1 ON Normal temperature effluent, Valid for S1-2 OFF (factory default) S1-2 High temperature effluent, Valid for S1-2 ON Shared main water pump for parallel units, Valid for S1-3 OFF (factory default)
Page 79 Aquantia XL 0-F valid for unit address setting on the DIP switches, 0 indicates the master unit and 1-F the slave units (parallel connection) Main board A is set as the master unit (factory default) ENC1 Main board B is set as the slave unit (factory default) 1.Single constant speed water pump control (S1-4...
Page 80 Aquantia XL Water-SW Water flow switch W.P-SW Water pressure switch TEMP-SW Targer water temperature switch Control contactor for auxiliary heater of pipe Control contactor for auxiliary heater of water tank Signal lamp of compressor status...
Page 81: Multiple Units
Aquantia XL 3.2 Multiple units If multiple units are connected in cascade, the unit address should be set on the DIP switch ENC1. With 0-F being valid, 0/1 indicates the master unit and 2-F indicate slave units.
Page 82 Aquantia XL...
Page 83 Aquantia XL Notes： 1. When the power cord is parallel to the signal wire, make sure that they are enclosed in respective conduits and are kept a reasonable wire spacing. (Distance between the power cord and signal wire: 300 mm if below 10A, and 500mm if below 50...
Page 84: Check Code Table
Aquantia XL 4 Check Code Table 4.1 Unit In case the unit runs under abnormal condition, failure protection code will display on both control panel and wired controller, and the indicator on the wired controller will flash with 1Hz. The display codes are shown in the following table: No.
Page 85 Aquantia XL Code Content Note Voltage too high or too low Recovered upon error recovery 1H9 Compressor inverter module is not matched Recovered upon error recovery High pressure sensor failure Recovered upon error recovery 1HE No inset A valve error...
Page 86: Troubleshooting
Aquantia XL 5 Troubleshooting 5.1 Warning Warning All electrical work must be carried out by competent and suitably qualified, certified and 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 87 Aquantia XL 5.2 E0/H9 Troubleshooting Digital display output Description § E0 indicates that the capability dialing code of the main PCB is inconsistent with the actual model. § 1H9 indicates that the driving model of IPM inverter module (compressor) does not match.
Page 88 Aquantia XL 5.3 E1 Troubleshooting Digital display output Description § Phase sequence error. § All Units stops running. § Error code is displayed on main PCB and user interface. Possible causes § Power supply terminals loose. § Power supply abnormal.
Page 89 Aquantia XL 5.4 E2 Troubleshooting Digital display output Description § Communication error between outdoor unit and user interface. § Communication failure between master and slave units § All units stop running. § Error code is displayed on main PCB and user interface.
Page 90 Aquantia XL Procedure Communication wires X Y E have short circuited, disconnected or are Reconnect the communication wires misconnected Communication wires X Y E are not Connect the communication wires in a connected in a daisy chain daisy chain Wires between outdoor main PCB and...
Page 91 Aquantia XL 5.5 E3, E4, E5, E6,E7, Eb, Ed, EE, EF, EP, EU, Fb, Fd Troubleshooting Digital display output...
Page 92 Aquantia XL Description § E3 indicates total water outlet temperature sensor error (valid for the main unit) § E4 unit water outlet temperature sensor error § 1E5 indicates condenser tube temperature sensor T3A error § E6 Water tank temperature sensor T5 failure §...
Page 93 Aquantia XL Procedure E3 / E4 / E5 / E6 /E7 / Eb / Ed /EE/ EF / EP / EU / Fb / Fd Sensor connection on main PCB or slave Ensure the sensor is connected properly PCB is loose...
Page 94 Aquantia XL 5.6 E8 Troubleshooting Digital display output Description § Power supply phase sequence protector output error § All units stop running. § Error code is displayed on main PCB and user interface. Possible causes § Power supply phases not connected in correct sequence or lose.
Page 95 Aquantia XL Procedure The phase sequence of the 3-phase Exchange any two of the 3 phase wires power supply is incrorrect Ensure all power supply phases is Power supply phases lose complete Ensure all supply terminals are securely Some power supply terminals are loose...
Page 96 Aquantia XL 5.7 E9 Troubleshooting Digital display output Description § Water flow failure. § E9 indicates water flow switch error. When E9 error occurs 3 times in 60 minutes, manual system restart is required before the system can resume operation.
Page 97 Aquantia XL 5.8 EC Troubleshooting Digital display output Description § EC indicates that the number of slave units detected by master unit has decreased. § Unit stop running. § Error code is only displayed on the user interface. Possible causes §...
Page 98 Aquantia XL 5.9 P0 Troubleshooting Digital display output Description § Discharge pipe high pressure or discharge temperature switch protection. When the discharge pressure rises above 3.4MPa or discharge temperature rises above 115°C, the system displays P0 protection and unit stop running. When the discharge pressure falls below 2.9MPa or discharge temperature fall below 90°C, P0 is removed and normal...
Page 99 Aquantia XL Procedure High pressure switch or discharge Ensure High pressure switch or discharge temperature switch connection on main temperature switch are connected PCB is loose properly High pressure switch or discharge Replace the high pressure switch or temperature switch have short-circuited...
Page 100 Aquantia XL 5.10 P1 Troubleshooting Digital display output Description § P1 one of the indicates suction pipe low pressure protection. When the suction pressure falls below 0.03MPa, the system displays P1 protection and unit stop running. When the pressure rises above 0.1MPa, P1 is removed and normal operation resumes.
Page 101 Aquantia XL Procedure Insufficient refrigerant caused by Add refrigerant or inspect the system for refrigerant leakage leaks The low pressure side is blocked, caused Inspect the system and fix the error. If the by crushed or bent pipe, blocked EXV, or...
Page 102 Aquantia XL 5.11 P4, P5 Troubleshooting Digital display output Description § 1 P4 indicates system current protection § 2 P4 indicates system DC bus current protection § When the compressor current rises above the protection value 35A (DC bus current rises above 35A), the system displays P4 protection and unit stop running.
Page 103 Aquantia XL Procedure The power supply is abnormal Check the power supply equipment Discharge part of the refrigerant. Add oil Excess refrigerant if it leaks during discharge refrigerant process Flush all refrigerant then vacuum the System contains air or nitrogen system and recharge refrigerant.
Page 104 Aquantia XL 5.12 P7 Troubleshooting Digital display output Description § High temperature protection of air side heat exchanger tube temperature sensor “T3a” in cooling mode. When the tube temperature of air side heat exchanger is higher than 80°C, the system displays P7 protection and unit stop running.
Page 105 Aquantia XL Procedure Air side heat exchanger tube Ensure the temperature sensor is temperature sensor “T3a” is loose connected properly Fan motor wiring connection is Ensure motor wiring wrong connected properly Air side heat exchanger tube temperature sensor “T3a” has...
Page 106 Aquantia XL 5.13 P9 Troubleshooting Digital display output Description § Water inlet and outlet temperature difference protection § Unit stop running. § Error code is displayed on main PCB and user interface. Possible causes § Temperature sensor not connected properly or has malfunctioned.
Page 107 Aquantia XL 5.14 Pb Troubleshooting Digital display output Description § Water side heat exchanger anti-freeze protection. § Error code is displayed on main PCB and ANTI.FREEZE icon is displayed on user interface. Possible causes § Normal system protection. § Temperature sensor not connected properly or has malfunctioned.
Page 108 Aquantia XL 5.15 PC Troubleshooting Digital display output Description § Water side heat exchanger low pressure protection. § Unit stop running. § Error code is displayed on main PCB and user interface. Possible causes § Insufficient refrigerant. § Low pressure side blockage.
Page 109 Aquantia XL Procedure Low pressure sensor connection on main Ensure the sensor is connected properly PCB is loose Low pressure sensor has short-circuited Replace the sensor or failed Insufficient refrigerant caused by Add refrigerant or inspect the system for refrigerant leakage...
Page 110 Aquantia XL 5.16 PH Troubleshooting Digital display output Description § Ambient temperature too high protection in heating mode. § Unit stop running. § Error code is displayed on main PCB and user interface. Possible causes § Temperature sensor not connected properly or has malfunctioned.
Page 111 Aquantia XL 5.17 PE Troubleshooting Digital display output Description § Water side heat exchanger low temperature antifreeze protection. § Unit stop running. § Error code is displayed on main PCB and user interface. Possible causes § Temperature sensor not connected properly or has malfunctioned.
Page 112 Aquantia XL Procedure Taf temperature sensor connection on Ensure the sensor is connected properly main PCB is loose Taf temperature sensor has Replace the sensor short-circuited or failed Insufficient refrigerant caused by Add refrigerant or inspect the system for refrigerant leakage...
Page 113 Aquantia XL 5.18 PL/C7 Troubleshooting Digital display output Description § PL indicates inverter module temperature protection. When the main inverter module temperature rises above 100 the system displays PL protection and all the units stop running. When the inverter module temperature drops below 70°C, the compressor enters re-start control...
Page 114 Aquantia XL 5.19 PU/FF Troubleshooting Digital display output Description § 1PU/FF indicates fan A module protection. § FF indicates PU protection has displayed 10 times. When a FF occurred, a manual system restart is required before the system can resume operation.
Page 115 Aquantia XL Procedure PU/FF Some power wires or communication Ensure power and communication wires wires of fan module are not connected are connected properly properly Remove obstruction or replace the fan The fan motor is blocked or has failed motor...
Page 116 Aquantia XL 5.20 F0 Troubleshooting Digital display output Description § 1F0 indicates a communication error between the main control chip and the compressor inverter driver chip. § Unit stop running. § Error code is only displayed on the unit with the error.
Page 117 Aquantia XL Notes: 1. Compressor inverter module address is set through dial switch S7 on the inverter module. The compressor inverter module A/B location refers to the wiring diagram. Switch Description S7-1 S7-2 Compressor inverter module address setting 2. Communication wire from outdoor main PCB CN26 to inverter module CN8/CN9.
Page 118 Aquantia XL 5.21 H5 Troubleshooting Digital display output Description § Abnormal power supply voltage. § All units stop running. § Error code is only displayed on main PCB and user interface. Possible causes § Outdoor unit power supply voltage at or above 265V or drops below 170V or a phase is missing.
Page 119 Aquantia XL 3. The normal resistances of the fan motor coil among U V W are less than 15Ω. If a measured resistance is 0Ω, the fan motor has short-circuited. 4. Set a multi-meter to buzzer mode and test any two terminals of P N and U V W of the inverter module. If the buzzer sounds, the inverter module has short-circuited.
Page 120 Aquantia XL 5.23 HE Troubleshooting Digital display output Description § Electronic expansion valve connection error. § Unit stop running. § Error code is only displayed on the unit with the error. Possible causes § Electronic expansion valve coil not connected properly or has malfunctioned.
Page 121 Aquantia XL 5.24 F2 Troubleshooting Digital display output Description § Insufficient protection of exhaust superheat. § Unit stop running. § Error code is only displayed on main PCB and user interface. Possible causes § Discharge pipe temperature sensor connected properly or has malfunctioned.
Page 122 Aquantia XL Procedure Discharge temperature sensor Ensure the sensor is connected properly connection on main PCB is loose Temperature or pressure sensor has Replace the sensor short-circuited or failed Ensure that the sensor is installed in an Discharge pipe temperature sensor at...
Page 123 Aquantia XL 5.25 F4 Troubleshooting Digital display output Description § 1F4 module A L10/L11/L12/L20/L30/L34 protection occurs for 3 times in 60 minutes § When F4 displays, a manual system restart is required before the system can resume operation. Possible causes §...
Page 124 Aquantia XL 5.26 FP Troubleshooting Digital display output Description § FP indicates pump in a combination system dial to different status. When the FP displayed, a manual system restart is required before the system can resume operation. § All units stop running.
Page 125 Aquantia XL 5.27 bH troubleshooting Digital display output Description § bH indicates adhesion of compressor relay or PED board damaged § Unit stop running. § Error code is only displayed on main PCB and user interface. Possible causes § Power on within 5min after power off §...
Page 126 Aquantia XL 5.28 HC troubleshooting Digital display output Description § HC indicates high pressure sensor error § Unit stop running. § Error code is only displayed on main PCB and user interface. Possible causes § Pressure sensor damaged § Main control board damaged...
Page 127 Aquantia XL 5.29 P3 troubleshooting Digital display output Description § P3 indicates ambient temperature too high for cooling mode § Unit stop running. § Error code is only displayed on main PCB and user interface. Possible causes § Ambient temperature sensor is interfered by other heat sources and the temperature detection value exceeds 65°C §...
Page 128 Aquantia XL 5.30 PA troubleshooting Digital display output Description § PA indicates abnormal water inlet and outlet temperature difference protection § Unit stop running. § Error code is only displayed on main PCB and user interface. Possible causes § Water temperature sensor damaged §...
Page 129: Drive Module Failure
Aquantia XL 6 Drive Module Failure 6.1 Check code table Error Whether to Fault Description Fault Category Code Repower-on 1L10 Hardware overcurrent protection 1L11 Overcurrent type fault Instantaneous overcurrent protection for phase current 1L12 Continuous 30s overcurrent protection for phase current...
Page 130 Aquantia XL 6.2 L10: Hardware Overcurrent Fault description The current exceeds the OCP protection value (peak) set for the hardware or the FO signal is received from the IPM ■ module. After the fault, the compressor stops running. If the fault disappears after one minute, the compressor is started ■...
Page 131 Aquantia XL Fault handling process...
Page 132 Aquantia XL 6.3 L11: Software Overcurrent Fault description The current exceeds the OCP protection value set for the software. ■ After the fault, the compressor stops running. If the fault disappears after one minute, the compressor is started ■ again.
Page 133 Aquantia XL 6.4 L20: Module Over-Temperature Protection Fault description ■ The temperature of the IPM module exceeds 100℃. After the fault, the compressor stops running. If the fault disappears after one minute, the compressor is started ■ again. Triggering/recovery conditions Triggering conditions: The temperature of the IPM module exceeds100℃.
Page 134 Aquantia XL Fault handling process...
Page 135 Aquantia XL 6.5 L30: Too Low Busbar Voltage Fault Fault description The voltage of the busbar is lower than the too low voltage protection threshold of the busbar set for the software ■ (350V DC). After the fault, the compressor stops running. If the fault disappears after one minute, the compressor is started ■...
Page 136 Aquantia XL 输入电源...
Page 137 Aquantia XL 6.6 L31: Too High Busbar Voltage Fault Fault description ■ The voltage of the busbar is higher than the too high voltage protection threshold of the busbar set for the software (800V DC). After the fault, the compressor stops running. If the fault disappears after one minute, the compressor is started ■...
Page 138 Aquantia XL Fault handling process 800V Input Power Supply...
Page 139 Aquantia XL 6.7 L32: Severely Too High Busbar Voltage Fault Fault description The voltage of the busbar is higher than the severe over-voltage protection threshold of the busbar set for the ■ software (820V). After the fault, the compressor stops running. If the fault disappears after one minute, the compressor is started ■...
Page 140 Aquantia XL 输入电源 6.8 L34: Three-Phase Power Input Phase Loss Fault Fault description The power input is out of phase or the three-phase power supply is severely unbalanced. ■ After the fault, the compressor stops running. If the fault disappears after one minute, the compressor is started ■...
Page 141 Aquantia XL Fault handling process...
Page 142 Aquantia XL 6.9 L43: Abnormal Current Sampling Bias Fault description The bias calibration of the current sampling circuit has malfunctioned. ■ After this fault occurs, the compressor cannot be started, and it is necessary to check if there is a problem with the ■...
Page 143 Aquantia XL 6.10 L45: Motor Code Mismatch Fault description The parameters do not match. ■ After this fault occurs, the compressor cannot be started, and it is necessary to check if there is a problem with the ■ driver board.
Page 144 Aquantia XL 6.11 L46: IPM Protection (FO) Fault description The dropping edge or sustained low level of the FO signal of the IPM Module is detected. ■ After the fault, the compressor stops running. If the fault disappears after one minute, the compressor is started ■...
Page 145 Aquantia XL 6.12 L47: Module Type Mismatch Fault description The driver board detected through the detection resistor of the module does not match the settings in the table of ■ driver parameters. Triggering/recovery conditions Triggering conditions: The current level of the driver board detected through the detection resistor of the module and ■...
Page 146 Aquantia XL 6.13 L50: Start Failure Fault description ■ The compressor fails to start. After the fault, the compressor stops running. If the fault disappears after one minute, the compressor is started ■ again. Triggering/recovery conditions Triggering conditions: The compressor fails to start.
Page 147 Aquantia XL 6.14 L52: Stalling Protection Fault description The compressor is stuck. ■ ■ After the fault, the compressor stops running. If the fault disappears after one minute, the compressor is started again. Triggering/recovery conditions Triggering conditions: The compressor is stuck.
Page 148 Aquantia XL 6.17 L65: IPM Short Circuit Protection Fault description Short circuit protection occurs to IPM corresponding to the compressor. ■ After the fault, the compressor stops running. If the fault disappears after one minute, the compressor is started ■...
Page 149: Fault Description
Aquantia XL 6.20 L6d: IPM V-Phase Lower Tube Open Circuit 6.21 Fault description ■ Open circuit occurs to the U-Phase lower tube of IPM. After the fault, the compressor stops running. If the fault disappears after one minute, the compressor is started ■...
Page 150: Compressor Replacement Procedure
Aquantia XL 7 Compressor replacement procedure Step 1: Remove faulty compressor and remove oil § Remove the faulty compressor from the outdoor unit. § Before removing the oil, shake the compressor so as to not allow impurities to remain settled at the bottom.
Page 151 Aquantia XL Inspecting compressor oil This oil is black This oil is a little - it has been yellow, but is clear carbonized and transparent and the condition is acceptable This oil is still transparent but there are impurities which...
Page 152: Appendix
Aquantia XL 8 Appendix 8.1 Temperature Sensor Resistance Characteristics Resistance table of exhaust temperature sensor -- 3950K(25-50) 5K(R90) 3% (with deviation) Contains: TP1/TP2 exhaust temperature sensor R90=5KΩ±3%，B25/50=3950K±3% Temp Resistance（KΩ） Resist.tol(%) Temp.tol(℃) （℃） Rmax R（t）Normal Rmin MAX(+) MIN(-) MAX(+) MIN(-) -30.0 1093.521...
Page 153 Aquantia XL 19.0 82.539 72.815 63.091 13.35 13.35 2.87 2.87 20.0 78.789 69.596 60.404 13.21 13.21 2.86 2.86 21.0 75.228 66.537 57.845 13.06 13.06 2.84 2.84 22.0 71.846 63.627 55.409 12.92 12.92 2.82 2.82 23.0 68.633 60.860 53.088 12.77 12.77 2.81...
Page 154 Aquantia XL 76.0 8.288 7.890 7.492 5.04 5.04 1.47 1.47 77.0 8.003 7.629 7.256 4.90 4.90 1.43 1.43 78.0 7.729 7.379 7.028 4.75 4.75 1.40 1.40 79.0 7.466 7.137 6.809 4.60 4.60 1.36 1.36 80.0 7.213 6.905 6.597 4.46 4.46 1.32...
Page 155 Aquantia XL Resistance table of water temperature sensor -- 3970(0-100) 2% 17.6K(R50) 3% (with deviation) Contains: Taf2 board changing anti-freezing sensor, Twi unit water inlet sensor, Two unit water outlet sensor, Tw total water outlet sensor R50=17.6±3%，B0/100=3970±2% Temp Resistance（KΩ） Resist.tol(%) Temp.tol(℃)
Page 156 Aquantia XL 20.0 64.636 61.184 57.731 5.64 5.64 1.28 1.28 21.0 61.729 58.486 55.243 5.54 5.54 1.26 1.26 58.967 55.921 52.875 5.45 5.45 1.25 1.25 22.0 56.345 53.483 50.621 5.35 5.35 1.23 1.23 23.0 24.0 53.854 51.165 48.476 5.26 5.26 1.22...
Page 157 Aquantia XL 74.0 7.818 7.461 7.105 4.78 4.78 1.45 1.45 75.0 7.565 7.215 6.866 4.85 4.85 1.48 1.48 7.322 6.978 6.635 4.92 4.92 1.50 1.50 76.0 77.0 7.087 6.750 6.414 4.99 4.99 1.53 1.53 78.0 6.861 6.531 6.201 5.05 5.05 1.56...
Page 158 Aquantia XL 1.634 1.512 1.390 8.08 8.08 3.15 3.15 128.0 129.0 1.593 1.473 1.354 8.13 8.13 3.18 3.18 130.0 1.553 1.436 1.318 8.19 8.19 3.22 3.22 1.515 1.399 1.284 8.24 8.24 3.25 3.25 131.0 132.0 1.477 1.364 1.251 8.29 8.29 3.29...
Page 159 Aquantia XL Resistance table of pipe temperature sensor -- 4100K(25-50) 10K(R25) 3% (with deviation) Contains: T6A auxiliary inlet temperature sensor, T6B auxiliary outlet temperature sensor, Th suction temperature sensor, Tz/7 heating plate exchange outlet sensor, T4 outdoor temperature sensor, T3A/T3B evaporator sensor.
Page 160 Aquantia XL 20.0 13.093 12.635 12.183 3.62 3.57 0.77 0.74 21.0 12.471 12.050 11.634 3.50 3.46 0.75 0.72 22.0 11.883 11.496 11.112 3.37 3.34 0.73 0.70 23.0 11.327 10.971 10.617 3.25 3.23 0.71 0.68 24.0 10.800 10.473 10.147 3.12 3.11 0.69...
Page 161 Aquantia XL 77.0 1.367 1.276 1.188 7.12 6.88 2.06 2.02 78.0 1.321 1.233 1.147 7.17 6.94 2.09 2.05 79.0 1.277 1.191 1.108 7.23 6.99 2.12 2.08 80.0 1.235 1.151 1.070 7.28 7.04 2.14 2.11 81.0 1.195 1.113 1.034 7.33 7.09 2.17...
Page 162 Ver. 2024-07...

This manual is also suitable for:

Kem-50 dps6 Kem-60 dps6 Kem-70 dps6

Kaysun Aquantia XL Service Manual

Quick Links

Need help?

Questions and answers

Related Manuals for Kaysun Aquantia XL

Summary of Contents for Kaysun Aquantia XL

This manual is also suitable for:

Table of Contents