Daikin LX10F10A Service Manual
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Daikin LX10F10A Service Manual

Daikin LX10F10A Service Manual

Inverter container refrigeration unit
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DAIKIN INVERTER 
CONTAINER
REFRIGERATION UNIT
Service Manual
LX10F10A or later
TR 11-07

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  • Page 1 DAIKIN INVERTER  CONTAINER REFRIGERATION UNIT Service Manual LX10F10A or later TR 11-07...
  • Page 2 Make sure to read these instructions before operation. This manual provides the minimum information required to operate the container refrigeration unit LX10F including the par t names of each operating section, how to turn the power on and how to change the temperature setting, as well as the functions of the product and maintenance work, etc.

  • Page 3: Table Of Contents

    Contents Chapter 4 Service ………………………………… 4-1 SAFETY PRECAUTIONS DANGER ………………………………………………3 4.1 Manual Check ………………………………… 4-2 WARNING ………………………………………………3 4.2 Automatic Pumpdown ………………………… 4-6 CAUTION ………………………………………………3 4.3 Connecting and Removing Gauge Manifold … 4-7 4.4 Checking Non-Condensable Gas …………… 4-8 Chapter 1 Unit Specifications …………………… 1-1 4.5 Sight Glass ………………………………………...

  • Page 4: Safety Precautions Danger

    * This is because it takes time for the charge accumulated in the capacitor on the inverter board Use only Daikin specified refrigerant oil to be released. (IDEMITSU, Daphne Hermetic Oil FVC68D). 2) Open the inverter box cover and ensure that...

  • Page 6: Chapter 1 Unit Specifications

    Chapter 1 Unit Specifications 1.1 Main Specifications 1.2 Set Point and Protection Device 1.3 Construction 1.3.1 Outside View 1.3.2 Inside View 1.3.3 Control Box 1.3.4 CPU Board and I/O Board 1.3.5 Inverter Box 1.3.6 Valves and Functions 1.3.7 Sensor Location 1.3.8 Printed Circuit Board 1.4 Operation Mode and Control 1.4.1 Frozen Mode...

  • Page 7: Main Specifications

    1.1 Main Specifications Item Main Specifications Chilled mode +30.0℃ 〜 -9.9℃ (+86.0F 〜 -14.1F) Mode Switch Frozen mode -10.0℃ 〜 -30.0℃ (+14.0F 〜 -22.0F) Condenser cooling system Air cooling dedicated type Controller DECOSⅤ Three phase  50Hz : 380/400/415V、60Hz : 440/460V Power source Voltage fluctuation rate should be within ±10%.

  • Page 8: Set Point And Protection Device

    1.2 Set Point and Protection Device Component Name Detector Symbol Setting Value Alarm OFF≧2400kPa（24.47kg/cm ） E101 High pressure switch ON≦1900kPa（19.37kg/cm ） F101 Pressure control valve Open≧2450kPa（25.0kg/cm ） − Fusible plug − 95〜100℃（203〜212℉） − Built-in thermal protector OFF≧135℃±5℃（275℉±41℉） − for condenser fan motor ON≦86℃±15℃（187℉±59℉）...

  • Page 9: Construction

    1.3 Construction Valve chamber HSV RSV DMV Economizer 1.3.1 Outside View Display panel & key pad ③ Control box Access panel Ventilator Condenser fan Eco Out Drier Eco In Compressor chamber Storage space Compressor cover ① for power cable DCHS2 Inverter box Model name plate Contents on unit name plate...

  • Page 10: Inside View

    1.3.2 Inside View RS,DRS Evaporator fan Evaporator Reheat coil Top View (Option) (Option) (Option) USDA1 USDA2 USDA3 SS,DSS 【Sensor】 ： Cargo Temperature Sensor Receptacle ：PC Port Receptacle （Option） (Option) ：Return Air Temperature Sensor ： Return Air Temperature Sensor for Data ：Supply Air Temperature Sensor Recorder (Option) USDA1 ：USDA Sensor 1 Receptacle （Option）...

  • Page 11: Control Box

    1.3.3 Control Box USB port PCC1 PCC2 I/O board CPU board Short circuit connectors for PT/CT emergency operation (Behind of C/B) (Behind of RCD) Earth terminal block ：Wake-up Battery (Rechargeable Battery) ：Circuit Breaker ：Magnetic Contactor, CFM high speed ：Magnetic Contactor, CFM low speed ：Magnetic Contactor, EFM high speed ：Magnetic Contactor, EFM low speed PCC1 ：Phase Correction Contactor 1...

  • Page 12: Cpu Board And I/O Board

    1.3.4 CPU Board and I/O Board USB port CPU board（EC1） I/O board（EC2） Spare PCC1 PCC2 F10A/250V F10A/250V MODEM PT/CT F10A/250V option AMBS Eco In MODEM DCHS1 Eco Out USDA1 DCHS2 USDA2 USDA3 option PCC1 BATTERY PCC2 Short circuit connectors for emergency operation...

  • Page 13: Inverter Box

    1.3.5 Inverter Box AC-L Coil Compressor magnetic switch (rear side) R phase coil Noise filter board (rear side) S phase coil AC-L Coil Inverter board (Option) (on right side wall) T phase coil (on left side wall) Cooling fan DC-L Coil Noise filter board（EC9）...

  • Page 14: Valves And Functions

    1.3.6 Valves and Functions HSV: Hot gas Solenoid Valve HSV is opened while in defrost and heating EEV: Electronic Expansion Valve operation to supply hot-gas from the EEV controls super heat at the evaporator outlet compressor to the evaporator and drain pan. and controls the refrigerant supply quantity It is also opened to equalize the pressure to to the evaporator by means of temperature...

  • Page 15: Printed Circuit Board

    2.3) and stopping is conducted by CPU board. Frequency change is made of frequent switching Use Daikin spare parts for CPU board replacement. control with diode bridge circuit and results high After replacement, configuration items are temperature.

  • Page 16: Operation Mode And Control

    1.4 Operation Mode and Control ＜Cooling OFF＞ When RS still drops to ≦SP-0.5℃ , unit will enter 1.4.1 Frozen Mode to Cooling OFF. Compressor stops and EFM ●Set Point and Control Temperature Sensor continues to run at low speed. If temperature rises to ≧SP+1.0℃...

  • Page 17: Chilled Mode

    1.4.2 Chilled Mode operation. A hot gas is adopted for the heat source, which is same as defrost mode. The operation is ●Set Point and Control Temperature Sensor same as defrost mode except EFM runs with high Unit operates in chilled mode between Set Point speed.

  • Page 18: Dehumidification Mode (Option)

    1.4.3 Dehumidification Mode (Option) ●Dehumidification Operation Dehumidification operation starts when the The dehumidification operation lowers humidity following conditions are met during modulated using the reheater that heats the air cooled by the cooling in the chilled mode. evaporator.  RH＞Setting humidity RH Heat source of the reheater, like the defrosting &...

  • Page 19: Defrost Mode

    1.4.4 Defrost Mode ●Defrost Initiation ●Hot-Gas Defrost System Short timer A hot gas system is adopted for the heat source; （12Hr when RS<-15℃） I.e. the high temperature and high pressure Pull-down When supply air temperature does not Automatic refrigerant discharged from the compressor is drop 0.2℃...

  • Page 20: Compressor, Fan Motor, Valve Function

    1.4.5 Compressor, Fan Motor, Valve Function ●Frozen Mode ------ Notes ----- Modulated Component Name Pull-down Cooling Off Control ※1 EFM operates at RS≦-5.0℃ Compressor CM※7,8 Max.130r/s 20〜130r/s ※ 2 High pressure Motor Evaporator fan motor H（L ※1） control Condenser fan motor H/L/OFF ※2 H/L/OFF ※2 ※3 EFM operates Liquid solenoid valve...

  • Page 21: Common Control

    1.4.6 Common Control ⑤Modulated control When the control temperature RS or SS reaches SP, the ●Compressor running control modulated control starts, and the compressor controls Compressor changes speed Min.1200 r/min to rotation speed in response to temperature difference Max. 7800 r/min with inverter control. between RS (or SS) and SP.

  • Page 22: User Specifications

    ●Pump down control ●Access to ASC operation Pump down with EEV closed before defrosting initiation, Access to ※2-5 ASC settings for ASC operation in before heating operation, or during the start-up control paragraph 2.3. of the compressor. Collect refrigerant into the receiver, and terminate the pumping-down when the low pressure ●Display becomes -40kPa (or EOS-LP(T)>30℃...

  • Page 23: Cold Treatment Transport (Option)

    1.5.2 Cold Treatment Transport (Option) 1.5.3 ACT, Automatic Cold Treatment (Option) ●ACT operation Units equipped with USDA connection port can perform cold treatment transport in conformity with USDA. When cold treatment is completed during USDA Regarding cold treatment transport, note the followings. transport (when the standard period has passed with the standard pulp temperature kept equal to ●...

  • Page 24: Ventilator Volume Detection (Fa Sensor) (Option)

    ●Cancellation of ACT operation 1.5.5 Remote Monitoring Receptacle 1. Cancellation of ACT operation (Option) 1) When ACT is set to "OFF" Installing the connection port for remote monitoring 2) When F-PTI is completed enables remote monitoring of operating conditions 3) When Chilled PTI is completed for compressor, defrost and in range.

  • Page 25: Information Interchange With Personal Computer

    1.5.7 Information Interchange with Personal Computer The electronic controller has an internal memory function to record the set point temperature, refrigeration temperature, operation mode, occurrence alarm and the report of automatic PTI during transportation in addition to the normal operation control. Data download Data records can be downloaded by connecting a PC to the communication port.

  • Page 26: Chapter 2 Controller

    Chapter 2 Controller 2.1 Operation Panel 2.2 Controller Functions List 2.3 Operation Procedure 2.4 Wake-up Battery (Rechargeable Battery) 2.5 Alarm Code 2.6 Alarm Diagnosis 2.7 General Diagnosis...

  • Page 27: Operation Panel

    2.1 Operation Panel ALARM LED IN RANGE LED LED light IN RANGE ALARM Operation condition FULL COOL COMP OFF MODULATION LCD panel FROZEN FULL COOL HEATING SET POINT DEFROS SET-MODE EMERGENCY STOP -18.0 ℃ DEHUMID Set Point temperature EMERGENCY SHUTDOWN USDA RETURN *1 Return air Temp.

  • Page 28: Controller Functions List

    2.2 Controller Functions List The controller installed in this unit has following functions. Access to the pertinent item in following pages for detail. Items Function Paragraph No. Temperature SP, Humidity SP 2.3 ※1, 2-2, 2-3 Setting Defrost Interval AUTO or 3, 6, 9, 12 or 24Hr 2.3 ※2-1 ASC (Automatic Set-point Change) 2.3 ※2-5...

  • Page 29: Operation Procedure

    2.3 Operation Procedure Using the operation keys on the operation panel, the following settings and sensor information, etc. are displayed. ※1 Set Point temperature ※4 Configuration Information ※8 Manual Defrost ※12 Configuration Set Change ※5 Service Menu ※9 Current Alarm ※13 Optional Function ※2 Mode Set ※6 Back Light...
  • Page 30 USDA 1 Temp ※12 Configuration Set USDA 2 Temp Battery Mode USDA 3 Temp Controller model Cargo Temp Log Interval Ventilation Volume Optional Sensor Battery Voltage Reheat Coil PTI History Ventilation (FA) --Y,M,D-- 1 Full USDA Sensor Type --Y,M,D-- 2 Short Temp Unit --Y,M,D-- 3 Chilled...
  • Page 31 ※1 Set Point temperature Change 1. Press key to change Set Point temperature. Press key to determine. Set Temp. Range : -30.0℃ to +30.0℃ . ※2 Mode Set ※2-1 Defrost Interval Set ※2-2 Humidity Set Mode Set When Reheat Coil is set to "OFF" in ※12 9Hrs Defrost Interval Humidity Set...
  • Page 32 Humidity Set Humidity Set Mode Set screen ▲▼:Change ▲▼:Change ENTER:Confirm ENTER:Confirm Humidity Set ON-A ▲▼:Change ENTER:Confirm EFM speed setting Bulb Humidity Set Evap Fan Speed Bulb Def End Temp 18. . 0℃ ▲▼:Change ENTER:Confirm Press key to select "L", "H-L," or "H" for EFM speed and press key to determine.
  • Page 33 ※2-5 ASC, Automatic set point change (Option) Automatic Setpoint Change This function can change the set temperature automatically over time (for details, refer to paragraph 1.5.1). ▲▼:Change 1. Press key to select "ON" or "OFF". ENTER:Confirm ON : Executing the automatic set point change OFF : Not executing the automatic set point change 2.
  • Page 34 ※2-6 ACT, Automatic Cold Treatment Automatic Cold Treatment When cold treatment is completed during USDA transport, this ACT function switches the temperature to the preset ▲▼ : Change temperature automatically. (See paragraph 1.5.3 for the detail.) ENTER : Confirm 1. Press key to select either "ON"...
  • Page 35 ※3 Sensor Information The current values in each sensor incorporated in this function unit are displayed. 1. Press key for page change. Press key to scroll. 2. Press key for 1 second to return to Menu screen or press key for 3 seconds to return to operation screen.
  • Page 36 ※5 Service Menu ※5-1 Trip Chart Service Menu Trip Chart ※5-2 Trip Report Trip Report ※5-3 PTI History PTI Data ※5-4 Alarm Record Alarm Record Auto Pumpdown ※5-5 Automatic Pumpdown Monitoring log ※5-6 Monitoring Log (Start, Stop) ※5-1 Trip Chart Fig.
  • Page 37 ※5-2 Trip Report Trip Report 1/131 The Trip report shows the trip data for up to 12 Time SP(C) DSS(C) DRS(C) SHU(%) HU(%) 20 MAY,2009 weeks starting from the present. 21:00 –30.0 –30.3 –30.3 Logging interval is the value that is set in the 20:00 –30.0 –30.1 –30.3 19:00 –30.0 –30.1 –30.1 configuration set.
  • Page 38 ※6 Back Light (Adjustment of LCD screen brightness) Selection of Back Light function ：Back light function available AUTO ： Back light function available. (The back light is turned off in the absence of key operation for 5 minutes.) OFF ：Back light off Brightness Adjustment 1.
  • Page 39 ※12 Configuration Set Caution !! 1. Optional function setting is done at factory. Normally, setting change at site is not necessary. 2. Ensure the circuit breaker is switched OFF after Configuration Set change. UNIT OFF Circuit Breaker OFF after setting change Preparation 10 sec.
  • Page 40 ※12-10 Container I.D. Container I.D. 1. Press key to change the 1st alphabet. 2. Press key to move to the 2nd alphabet and press key to change 2nd alphabet. 3. Change the next alphabets and 7 numerals with same procedure. Press key to determine container I.D.
  • Page 41 Unit I/O switch OFF USB Menu 1. Insert the USB memory that contains an authentication file. Download the authentication file from the Daikin's web site. 2. Press key to select "Data Download" in "USB Menu" and press key to determine.
  • Page 42 ※14-2 Software Upload Battery Mode During upload Select software ※2 ※ 1 USB Menu Software Upload Software Upload Battery Mode Data Information Data Download INV-0A Alarm Record Uploading … Software Upload INV-09 Trip Record INV-08 USB Menu ----- INV-02 INV-01 With commercial power Error message Error message...

  • Page 43: Wake-Up Battery (Rechargeable Battery)

      Please send the battery replaced in EU 7.1V or less: The battery has deteriorated. The member nation to the following address. battery must be replaced. DAIKIN REFRIGERATION OFFICEF Caution !! Fascinatio Boulevard 562, Cappele In the event of using the battery for 2 years A/D Ijssel 2909 VA, The Netherlands or more, USDA data logging etc., may not be...

  • Page 44: Alarm Code

    2.5 Alarm Code ●Alarm grouping F---：Alarm that stops the unit E---：Alarm that restarts the unit or continues the backup operation T---：Alarm during PTI (Refer to paragraph 3.3.2.) F5---：Alarm that stops the unit related to inverter E5---：Alarm that restarts the unit related to inverter Alarm Alarm Controller action at the generating of alarm...
  • Page 45 ●E Alarm Alarm Diagnosis Alarm content Controller action code E101 HPS activates during operation Restart after 3 min. E105 Compressor over current at startup (>51A) Restart after 3 min. E107 DCHS1 or DCHS2 becomes 130 ℃ or more for 10 minutes or 145 Restart after 3 min.
  • Page 46 ●Inverter F Alarm Alarm Diagnosis Alarm content Controller action code F528 E528 is generated 5 times. (Compressor does not operate at startup) UNIT stops F52E E52E is generated 4 times. (Instantenious over current >51A±10% at startup.) UNIT stops F52F E52F is generated 4 times. (Compressor current sensor failure at startup.) UNIT stops F536 E536 is generated 4 times.

  • Page 47: Alarm Diagnosis

    2.6 Alarm Diagnosis F101 ・ E101 Alarm F101 HPS activates within 30 seconds after compressor startup.（HPS OFF≧2400kPa, ON Generating ≦1900kPa ） Logic E101 HPS activates during operation. （HPS OFF≧2400kPa、ON≦1900kPa ） Possible ＊HPS or HPS circuit failure Causes ＊ Blocking or short circuiting of air passage for air cooled condenser, CFM reverse rotation, ambient temperature is over 50℃...
  • Page 48 F109 ・ E107 ・ E109 Alarm F109 LPT remains at -72kPa or lower within 2 seconds after compressor startup. Logic E109 LPT remains at -70kPa or lower for 2 seconds during operation. E107 DCHS1or DCHS2 becomes 130℃ or more for 10 minutes or 145℃ or more. Possible 1.
  • Page 49 F301 ・ E303 ・ E305 ・ E307 ・ E311 Alarm ① All alarms --- After both CPU board (EC1) and operation board (EC3) are replaced together, Logic the initial setup is not executed. ② E307, E311--- After CPU board (EC1) is replaced, the configuration set is not executed. Possible ④...
  • Page 50 F401 ・ F405 ・ F407 ・ F409 Alarm F401 Multiple sensor (SS,DSS,RS) failure in chilled mode Logic F405 Multiple sensor (HPT,DCHS1,DCHS2) failure F407 Multiple sensor (HPT,LPT) failure Possible F409 Multiple sensor (LPT,DCHS1,DCHS2) failure Causes Trouble The unit cannot perform backup operation and cannot be controlled. Shooting Replace each abnormal sensor.
  • Page 51 F703 Alarm The wave form of power phase is abnormal, therefore phase is not detected correctly. Logic Possible Abnormal wave form of power phase Causes Trouble Check power supply equipment or facility and provide power supply with correct phase wave Shooting form Controller...
  • Page 52 F707 Alarm ＊ Fuse F2U (I/O board) is brown due to over current (10A/250V) in protection circuit Logic (Generates E115 also if F707 is generated by controller control) Possible ＊Coil of magnet contactor or solenoid valve is burnd-out in protection circuit or short circuited Causes ＊The cable in protection circuit is short circuited Trouble...
  • Page 53 E115 Alarm ＊CFM internal thermostat activated (OFF≧135℃±5℃ ) Logic ＊E115 is also generated due to F707 (fuse F2U brown) (by controller control) Possible ＊CFM motor load large Causes ＊Short circuited in motor internal coil Trouble 1. Whether CFM motor generates heat? Shooting  Whether motor shaft rotates smoothly by hand? Check whether it's locked.
  • Page 54 E202 Alarm Automatic pumpdown failure Logic HPT≧2300kPa or DCHS≧120℃ during automatic pump-down. ＊This alarm is a reminder before replacing drier after auto pump-down completion. Possible Refrigerant overcharged. Causes (All refrigerant can not accumulated in condenser and receiver by pump down.) Trouble Collect refrigerant from service port ③...
  • Page 55 E207 Alarm Defrost can not be completed within 90 minutes. Logic (The condition EOS≧10℃ was not satisfied five defrosting times continuously during 90-minute counting). Possible ＊Excessive frost on the evaporator coil. Frost partially remains. Causes ＊Setting time of defrosting interval is too long. ＊Temperature of hot-gas for defrosting is low.
  • Page 56 E401 E402 ・ E403 ・ E404 （SS） ・ （DSS） （RS） （DRS） Alarm ≦-40℃ (54kΩ) with 3 minute elapse or ≧100℃ (0.22 kΩ) with 3 minute elapse Logic Note: The alarm is activated when sensor or the circuit is nearly disconnected (open) or short- circuited (close).
  • Page 57 E406 ・ E407 ・ E409 （SGS） （EIS） （EOS） E411 ・ E435 ・ E437 （AMBS） （Eco In） （Eco Out） Alarm ≦-57℃ (100 kΩ) with 3 minute elapse Logic or ≧100℃ (0.221 kΩ) with 3 minute elapse Note: The alarm is activated when sensor or the circuit is nearly disconnected (open) or short- circuited (close).
  • Page 58 E413 ・ E415 （LPT） （HPT） Alarm 〈E413〉≦-110 kPa with 3 minutes elapse or ≧1420 kPa with 3 minutes elapse Logic 〈E415〉≦-340 kPa with 3 minutes elapse or ≧4260 kPa with 3 minutes elapse Possible 1. Faulty contact of connector X7A (CPU board) Causes 2.
  • Page 59 E417 Alarm Power voltage sensor PT failure (PT control circuit in PT/CT board remains ≦DC20V or ≧ Logic DC654V) Possible 1. Disconnection between connector X61A (PT/CT board)〜 X4A (CPU board) Causes 2. Fuse F11U brown (in PT/CT board) 3. Voltage sensor PT error (in PT/CT board) Trouble 1.
  • Page 60 E425 ・ E427 （USDA1） （USDA2） E429 ・ E433 （USDA3） （CTS） Alarm 〈＊13 Configuration set in paragraph 2.3 for USDA "1"〉   〈＊13 Configuration set in paragraph 2.3 for USDA "2"〉 Logic        ≦-60℃ (AkΩ)               ≦-39℃ (320kΩ)       or ≧85℃ (BkΩ)                or ≧96℃ (0.79kΩ) Note: The alarm is activated when sensor or the circuit is nearly disconnected (open) or short- circuited (close).
  • Page 61 E431 Alarm Humidity sensor (HuS) failure (Detect RH>120% or RH<20%) Logic Possible ＊Humidity sensor (HuS) failure Causes ＊Contact failure of connector X20A (CPU board) ＊Controller failure Trouble 1. Check if the connector X7A (CPU board) is inserted 1. If alarm is still generated, proceed Shooting securely.
  • Page 62 E707 Alarm There is instantenious power failure during operation. Logic Possible Power supply failure Causes Trouble Provide correct power supply. Shooting Unit stops once and restarts after 3 munutes standby. (Retry 9 times) Continue operation if correct power supply is provided in that time. Controller E707 ...
  • Page 63 E805 Alarm Ventilation FA sensor failure Logic Possible 1. Setting error Causes 2. Installation failure of FA sensor ＊FA sensor failure 3. Controller (CPU board) failure Trouble 1-1. Check FA sensor setting 1-1. Correct if setting is wrong. Shooting LOW-FLY: With FA sensor (Ventilator with insect screen) Setting correction ：※12 LOW: With FA sensor (Ventilator without insect screen) Configuration Setting in paragraph...
  • Page 64 Communication Interrupted （E903） Alarm Communication error between CPU board and operation board Logic Possible 1. Cable failure or connection error between operation board (EC3) and CPU board (EC1) Causes 2. Opeartion board failure (communication part to CPU board) 3. CPU board failure (communication part to operation board) Trouble 1.
  • Page 65 Inverter Alarm Diagnosis Inverter board and detection point Detection point of operating condition MAIN CIRCUIT DC reactor CAPACITOR of opearting condition Inverter Board (EC8) Power supply environment detection (current/voltage/waveform) AC⇒DC rectification IPM power module Capacitor charge status Compressor Main circuit capacitor Actual frequency detection AC⇒DC rectification X602A...
  • Page 66 F52E ・ F52F E52D ・ E52E ・ E52F Alarm Alarm Logic Possible Causes Logic & Possible E52D：Fin temperature sensor failure Inverter board failure（Fin temperature Causes sensor） （Fin temperature≧175℃ or -45≦℃） F52E：E52E is generated 4 times. Inverter board failure（IPM part） E52E：Instantaneous overcurrent failure IPM：Intelligent Power Module F52F：E52F is generated 4 times.
  • Page 67 F536 ・ F538 ・ F53C E536 E53C Alarm Alarm Logic Possible Causes Logic F536：E536 is generated 4 times. Inverter board failure & Possible E536： Detect offset error of current sensor at (Current sensor) Causes starting F538：Power module failure Inverter board failure (IGBT) IGBT：Insulated gate Bipolar Transistor F53C：E53C is generated 4 times.
  • Page 68 E52C Alarm Cooling fin is over-heated (≧90℃ with 260 sec elapse or ≧93℃ with 5 sec elapse) Logic Possible ①Ambient temperature is high （>50℃） Causes ②Inverter board fault （Fin temperature detection part） Trouble ①External operating temperature of the unit is up to 50 ℃ . Shooting Check external environment for short circuit of supply air from air cooled condenser coil.
  • Page 69 E533 Alarm ①Power supply remains in ≧530V or ≦300V. Logic ②One of phase is missing in power supply to inverter. Possible ①Power voltage remains more than upper limit (≧530V) or lower than lower limit (≦300V). Causes ② Check if there is broken wire (open) or phase missing in the power supply to inverter (secondary side of circuit breaker).

  • Page 70: General Diagnosis

    2.7 General Diagnosis If the unit does not work properly, refer to the following table to find causes of trouble and provide appropriate measures. Symptom Cause Checkpoint Remedy A. Neither evaporator Faulty power supply Voltage on primary side of circuit breaker Check the power supply fan, condenser fan It should be within the voltage range...
  • Page 71 Symptom Cause Checkpoint Remedy Power supply ・ R or T-phase is Is the of the controller open. voltage of three- phase power supply on the cannot be turned ・ Faulty power ＊R or T-phase is open. primary side of the circuit ＊Faulty power supply (voltage drop) supply (voltage breaker 300V...
  • Page 72 Symptom Cause Checkpoint Remedy Sight glass flashes Refrigerant shortage when the RS is 0℃ Blocked pipe (parts) Gas leak check or less during frozen (including solenoid Gas leaks ⇒ Repair the gas leaking location. operation. valves) Entering of air in refrigerant system The high pressure is Clogging of discharge...
  • Page 73 Symptom Cause Checkpoint Remedy The high pressure is excessively high. Check for leak from solenoid Solenoid valve internal valve during pull-down. Is the Leak from solenoid valve leak temperature in the piping on ⇒ Replace the solenoid valve. the HSV, and RSV outlet side HSV: Hot gas solenoid valve high?
  • Page 74 Symptom Cause Checkpoint Remedy The low pressure is Faulty opening of Reset opening of EEV (Circuit breaker ON) excessively low. electronic expansion valve (EEV) Is pull-down possible? Normal Low air volume Manual defrost (frosted evaporator) Is pull-down possible? Normal Low air volume Is suction YES (Fan rotates reverse) and discharge air reversed...
  • Page 75 Symptom Cause Checkpoint Remedy Normal operation The low pressure is excessively low. Automatic Refrigerant YES（E202） pomp-down Refrigerant recovery, overcharge. Is E202 generated？ Recharging YES (High) To page 2-47 and 48 Is high pressure high? （The high pressure is excessively high.） Solenoid valve Is outlet side pipe YES (Hot)
  • Page 76 Symptom Cause Checkpoint Remedy The control Operating temperature temperature is is hunting. unstable. Faulty low Is the difference pressure in pressure between the pressure Replace the LPT. gauge and LPT 30 kPa transducer LPT or more? Faulty discharge Is the DCHS or pipe temperature Correct heat insulation installed...
  • Page 77 Symptom Cause Checkpoint Remedy Malfunction of Auditory check Replace Abnormal noise compressor inside Fan motor of Auditory check Replace the parts. evaporator, condenser ・Worn bearing Contact with fan Auditory check Replace the faulty parts. guide Visual check Compressor Auditory check Tighten bolts.
  • Page 78 Symptom Cause Checkpoint Remedy The air cooling The condenser fan continues rotating. evaporator fan continues rotating. Temperature in the Is the condenser fan stopped when the CBS CBS OK control box is high. is cooled? ＊CBS: Control box temperature sensor Water pressure switch WPS is Faulty WPS...

  • Page 80: Chapter 3 Pti & Periodic Inspection

    Chapter 3 PTI & Periodic Inspection 3.1 Pre-Trip Inspection 3.2 Manual Inspection 3.3 Automatic PTI 3.3.1 Automatic PTI Step No. and Contents 3.3.2 Automatic PTI Alarm 3.4 Periodic Inspection...

  • Page 81: Pre-Trip Inspection

    3.1 Pre-Trip Inspection Perform a pre-trip inspection of each component and take remedial actions if necessary so that the unit will operate normally. The following is the items necessary for a pre-trip inspection, but those surrounded with a frame can receive an automatic PTI. (1) Appearance inspection of unit ①...

  • Page 82: Manual Inspection

    3.2 Manual Inspection Some items subject to a manual inspection are listed below. Inspection item Inspection content Inspection for physical ✓ damage ✓ 1) Casing frame ✓ 2) Compressor ✓ 3) Condenser fan motor Loose mounting bolts ✓ 4) Evaporator fan motor ✓...
  • Page 83 Inspection item Inspection content Damage of power cable ✓ and plug Inspection of condition of ✓ internal wiring ✓ 1) Magnetic switch Terminal looseness 2) Electronic controller terminal ✓ inspection and retightening board if necessary ✓ 3) Terminal board Condition of monitoring ✓...

  • Page 84: Automatic Pti

    3.3 Automatic PTI ● Automatic PTI enable condition 43 ℃ ≧ Ambient temperature ≧ -10.0 ℃ Ambient temperature above 43 ℃ or below -10.0 ℃ may result in PTI failure. ● Four options for automatic PTI are available, Short PTI, Full PTI, Chilled PTI and Frozen PTI. Content Performed in order to find parts abnormalities.

  • Page 85: Automatic Pti Step No. And Contents

    3.3.1 Automatic PTI Step No. and Contents During PTI operation, Step No, contents, and select PTI (Short, Full, Chilled or Frozen) will be displayed. Step No. Contents Short PTI Full PTI Chilled PTI Frozen PTI ✓ ✓ ✓ ✓ Basic data record ✓...
  • Page 86 EMV coil failure Check EMV coil and wiring. EMV valve body failure Check EMV outlet pipe temperature. T101 EMV or ESV failure ESV wiring failure Check ESV coil and wiring. ESV coil burning out Check clicking sound from ESV. EMV, ESV check EMV coil failure Check EMV coil and wiring.

  • Page 87: Periodic Inspection

    3.4 Periodic Inspection Always to operate the unit normally, conduct periodic inspections of each part in addition to pre-operation ones and make adjustments or repairs where necessary. The following table shows an example of the inspection plan. Inspection item Inspection content 2nd year 4th year 8th year Inspection for physical ✓...
  • Page 88 Inspection item Inspection content 2nd year 4th year 8th year Damage of power cable ✓ ✓ ✓ and plug Inspection of condition of ✓ ✓ ✓ internal wiring Terminal looseness ✓ ✓ ✓ 1) Magnetic switch inspection and retightening ✓ ✓...

  • Page 90: Chapter 4 Service

    Chapter 4 Service 4.1 Manual Check 4.2 Automatic Pumpdown 4.3 Connecting and Removing Gauge Manifold 4.4 Checking Non-Condensable Gas 4.5 Sight Glass 4.6 Refrigerant Recovery and Charge 4.6.1 Operation Pressure Check 4.6.2 Refrigerant Recovery 4.6.3 Vacuum and Dehydration 4.6.4 Refrigerant Charge 4.7 Electrical Circuit and Servicing Precautions 4.8 Parts Replacement 4.8.1 Replacing Compressor...

  • Page 91: Manual Check

    Pre-Cautions for Service Work 1. Note Safety PRECAUTIONS, WARNING and 4. Use correctly 4 service ports (Refer to paragraph 4.5) CAUTION described in page 3. ①：for low pressure check 2. Confirm model name and refrigerant charge ②：for high pressure check ①, ④：for refrigerant recovery, vacuum &...
  • Page 92 Follow the same procedure for other magnetic contactor or solenoid valve ON/OFF check. During checking, the During checking ※3〜 ※2 PCC2 ON/OFF Check corresponded magnetic ※6, the corresponded fan ※3 CFH & PCC1 (or 2) ON/OFF Check contactor or solenoid valve operation current will be ※4 CFL &...
  • Page 93 ※12 Humidity Sensor Reading (Option) 1. Press keys to select HuS-Reading and press key to determine . Then EFM runs with high speed and humidity is displayed. When the difference between high pressure and low pressure is large (300kPa or more), unit enters to pressure equalizing so that "Waiting---"...
  • Page 94 ※18 FA Calibration (Option) Go to FA Calibration in Manual Check first, then set ventilation volume. Manual Check Manual Check Manual Check Manual Check Step 1. Fully open Ventilation cover Complete Step 2. Close ventilation FA Calibration 0 mm cover to zero point Step 4 : Press ENTER FA Calibration 200 mm...

  • Page 95: Automatic Pumpdown

    4.2 Automatic Pumpdown An automatic pump down system is applied to the unit to prevent the unit from extra decrease of low pressure due to pump down operation or burning of scroll compressor due to a closed stop valve. ●Access to Automatic Pumpdown Auto Pumpdown Under preparation Operation display...

  • Page 96: Connecting And Removing Gauge Manifold

    4.3 Connecting and Removing Valve handle Gauge Manifold Sleeve Gauge manifold Passage open/ closing cock Low-pressure side hose High-pressure side hose Coupler (Low pressure) CAUTION Hose for air purge and refrigerant charge Coupler (high pressure) Be sure to attach the cap to the service Structure of gauge manifold port after the removal of the manifold.

  • Page 97: Checking Non-Condensable Gas

    4.4 Checking Non-Condensable Gas If the air or other non-condensable gases are present in the refrigerant system, they will gather in the condenser and the pressure inside the condenser will rise significantly. In this case, recover all refrigerant and charge the specified charge amount of refrigerant.

  • Page 98: Refrigerant Recovery And Charge

    4.6 Refrigerant Recovery and Charge ③ ① ② ④ Valve chamber Compressor chamber ③ ① ② ④ Work Service port Notes Operation High pressure ② Pressure Low pressure ① cheek Refrigerant recovery ① & ④ Recover all refrigerant from ports ④ and ①. Vacuum and dehydration ①...

  • Page 99: Operation Pressure Check

    4.6.1 Operation Pressure Check Use port ② for high pressure check and ① for low pressure check. ① ① ④ ② Vacuum Pump ● If moisture is existing in the system, proceed to following steps. 4.6.2 Refrigerant Recovery 1) Connect R134a cylinder to gauge manifold and purge air inside the hoses.

  • Page 100: Refrigerant Charge

    4.6.4 Refrigerant Charge Charge specified amount of refrigerant after vacuuming and dehydration. Confirm the specified charge amount of refrigeration stamped on model name plate. 1. Place R134a cylinder on digital scale and connect hose to manifold gauge and purge air inside the hose. Record weight of R134a cylinder.

  • Page 101: Electrical Circuit And Servicing Precautions

    4.7 Electrical Circuit and Servicing Precautions Control box Fan motors 3 phase AC Sheet key 380-415V/50Hz 440-460V/60Hz PT/CT AC24V I/O board CPU board Operation board Input to CPU board Sensors Modulation Valves Solenoid Valves Inverter box Output from Noise filter CPU board Inverter board board EC9...

  • Page 102: Parts Replacement

    4.8 Parts Replacement 4.8.1 Compressor ●Preparation for installing a new compressor 1. Check the replacement compressor and accessories. Fig. 1 Replacement compressor Fig.2 Suction pipe connecting port (with a blank cap) Removal of the compressor cover Injection pipe connecting port (with a blank cap) Rotate Hold on Suction pipe...
  • Page 103 ●Compressor installation 1. Temporarily placing the compressor Temporarily tighten the four bolts at the compressor legs and the one bolt at the compressor top. 2. Connecting three pipes (Discharge, suction and injection pipes) 2-1. Place the provided packing on the discharge and suction pipe connecting ports of the compressor.

  • Page 104: Evaporator Fan And Fan Motor Removing

    4.8.2 Evaporator Fan and Fan Motor Removing （1）Removing a）Remove access panel and disconnect 4 pcs. fixing bolts (M6) from fan mounting plate. a）Fixing bolts b）Loosen 4 pcs bolts (M8) from fan blade fixing metal. c） Disconnect power supply connector on fan motor.

  • Page 105: Inverter Board

    The inverter board and the right cover are combined. ＊ Download the latest software from the Daikin's (Fig. 2) web site or request it at Daikin Service Office near you. 4. Necessity of configuration setting Case 1. When using CPU board from Daikin...

  • Page 106: I/O Board

    Reverse the above procedure to mount operation board using the four bolts and connect the cable. 3. Necessity for configuration setting Case 1: When using operation board from Daikin Connector X61A spare parts, configuration setting is not Mounting hole (4 pcs.) required.

  • Page 107: High Pressure Switch (Hps)

    4.8.8 High Pressure Switch (HPS) 4.8.9 High Pressure Transducer (HPT) Type ACB-LB156 Type NSK-BD010F-070 OFF 2400kPa（24.47kg/cm ） Setting value ） ON 1900kPa（19.37kg/cm ●Removal of HPT 1. Remove HPT cable from control box. 2. Remove heat shrink tube and HPT from joint with ●Replacement method check valve.

  • Page 108: Low Pressure Transducer (Lpt)

    4.8.10 Low Pressure Transducer 6. Set one end of heat shrink tube to left side of union joint. (Fig. 6) and then ① Shrink the tube (LPT) by heating up using drier. Type NSK-BD030F-070 ② Apply silicon sealant to both ends of the tube. ③...

  • Page 109: Valve (Emv), Discharge Modulation Valve (Dmv)

    4.8.11 Electronic Expansion Valve (EEV), Coil Economizer Modulation Valve (EMV), Metal fitting Discharge Modulation Valve (DMV) Binding band Name Type Main unit HCM-MD12DM-2 Coil Socket (Red) Electronic Expansion Valve HCM-BD35DM-2 Lead wire Body Valve size: 3.5mm HCM-MD12DM-3 Coil Anti-condensation tube Binding band Socket (White) Economizer Modulation Valve...

  • Page 110: Solenoid Valve

    4.8.12 Solenoid Valve 4.8.13 Drier 4 Solenoid Valves using in this unit use a common The drier automatically absorbs moisture in the refrigerant while it is circulated. It also commonly works as a filter to coil and body. remove dust in the refrigerant. Replace the drier if it does Name Symbol Boby...

  • Page 111: Check Valve

    4.8.15 Check Valve 4.8.16 Filter and Strainer ●Replacement method ●Replacement method 1. Refer location of check valves to below picture. 1. Refer location of check valves to below picture. 2. Do not make any mistake about the installation 2. Install the new check valve in the direction which direction (arrow direction) of the check valve an arrow shows.

  • Page 112: Emergency Operation At Controller Malfunction

    4.9 Emerg ency Operation at Controller Malfunction ●Operation condition at emergency operation ● On-site work Temperature can not be controlled. Turn the Following on-site work are required for emergency circuit breaker ON or OFF to maintain the target operation in the case of controller malfunction. (1) Wiring change of controller temperature.

  • Page 113: Fixing Of Eev Opening

    4.9.2 Fixing of EEV Opening 4.9.3 Fixing of EMV Opening For the emergency operation when controller or For the emergency operation when controller or EEV coil is malfunctioned, EEV opening is fixed EMV coil is malfunctioned, fix EMV opening using using emergency magnet.

  • Page 114: Fixing Of Dmv Opening

    4.9.4 Fixing of DMV Opening For the emergency operation when controller or DMV coil is malfunctioned, fix DMV opening fully using emergency magnet. Preparation : Emergency magnet Parts No.1896110. ① Disconnect connector X11A（Blue） on CPU board.（To deenergized to DMV coil) Refer the location of X11A to CPU board, in paragraph 1.3.4.

  • Page 116: Chapter 5 Appendix

    Chapter 5 APPENDIX 5.1 Standard Tightening Torque for Bolt and Flare Nut 5.2 Temperature Sensor Characteristics ●SS/RS/DSS/DRS/EIS/EOS/Eco In/Eco Out/SGS/AMBS ●DCHS Sensor Characteristics DCHS1/DCHS2 ●NTC type USDA Sensor Characteristics, USDA1, USDA2, USDA3, CTS (Option) ●ST9702-1 type USDA Sensor Characteristics, USDA1, USDA2, USDA3, CTS (Option) 5.3 Pressure Transducer Characteristics 5.4 Humidity Sensor Characteristics, HuS (Option) 5.5 HFC134a Characteristics...

  • Page 117: Standard Tightening Torque For Bolt And Flare Nut

    5.1 Standard Tightening Torque for Bolt and Flare Nut Tightening Torque Type Size Example of Application N・m kgf・m lbf・ft Small parts Solenoid valve Inverter box cover Slide plate for EFM stator Condenser fan grille Solenoid valve chamber cover Fixing plate of evaporator fan stator Bolt Condenser fan motor 12.3...

  • Page 118: Temperature Sensor Characteristics

    5.2 Temperature Sensor Characteristics ●SS/RS/DSS/DRS/EIS/EOS/Eco In/Eco Out/SGS/AMBS Temperature Temperature Resistance Temperature Temperature Resistance （℃） （ F） （kΩ） （℃） （ F） （kΩ） −40 −40 53.54 ＋1 ＋33 6.557 −39 −38 50.52 ＋2 ＋35 6.270 −38 −36 47.69 ＋3 ＋37 5.997 −37 −34 45.04 ＋4...

  • Page 119: Dchs Sensor Characteristics Dchs1/Dchs2

    ●DCHS Sensor Characteristics DCHS1/DCHS2 Temperature Temperature Resistance Temperature Temperature Resistance （℃） （ F） （kΩ） （℃） （ F） （kΩ） 478.765 75.191 455.208 72.229 432.939 69.398 411.880 66.692 391.960 64.105 373.110 61.630 355.269 59.264 338.376 56.999 322.377 54.832 307.220 52.758 292.857 50.772 279.241 48.871 266.330 47.049...

  • Page 120: Ntc Type Usda Sensor Characteristics, Usda1, Usda2, Usda3, Cts (Option)

    ●NTC type USDA Sensor Characteristics, USDA1, USDA2, USDA3, CTS (Option) Set sensor type "2" in ※12 Configuration Set Receptacle for in paragraph 2.3 for NTC type USDA sensor. setting "2"        Temperature Temperature Temperature Temperature Resistance （kΩ） Resistance （kΩ） （℃） （...

  • Page 121: St9702-1 Type Usda Sensor Characteristics, Usda1, Usda2, Usda3, Cts (Option)

    ● ST9702-1 type USDA Sensor Characteristics, USDA1, USDA2, USDA3, CTS (Option) Set sensor type "1" in ※12 Configuration Set Receptacle for ST9702-1 in paragraph 2.3 for ST9702-1 type USDA sensor. setting "1"         Temperature Temperature Temperature Temperature Resistance （kΩ） Resistance （kΩ） （℃）...

  • Page 122: Pressure Transducer Characteristics

    5.3 Pressure Transducer Characteristics ● HPT ● LPT Pressure Output Pressure Output Pressure Output Pressure Output （kPa･G） （V） （kPa･G） （V） （kPa･G） （V） （kPa･G） （V） 0.50 1100 1.62 −500 −1.03 1.42 0.60 1200 1.72 −400 −0.72 1.72 0.70 1300 1.83 −300 −0.42 2.03 0.81...

  • Page 123: Hfc134A Characteristics

    5.5 HFC134a Characteristics Temperature Vapor pressure Temperature Vapor pressure kg/cm ･G PSIG kg/cm ･G PSIG −40 −40 −49 −0.50 −7.1 4.79 68.1 −39 −38.7 −46 −0.47 −6.6 69.8 4.97 70.7 −38 −36.4 −44 −0.44 −6.3 71.6 5.16 73.5 −37 −34.6 −41 −0.41 −5.9...

  • Page 124: Sequence

    5.6 Sequence...
  • Page 125 Stereoscopic wiring diagram 5-10...
  • Page 126 Head Office. Umeda Center Bldg.,  4-12, Nakazaki-Nishi 2-chome, Kita-ku, Osaka, 530-8323 Japan. Tel: 06-6373-4338 Fax: 06-6373-7297 Tokyo Office. JR Shinagawa East Bldg., 11F 18-1, Konan 2-chome, Minato-ku Tokyo, 108-0075 Japan. Tel: 03-6716-0420 Fax: 03-6716-0230 TR11-07 (2011.11.00100)NK...

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