Mitsubishi Electric e Series Service Handbook
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Mitsubishi Electric e Series Service Handbook

Mitsubishi Electric e Series Service Handbook

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AIR CONDITIONER
Service Handbook
Model
EAHV-M1500YCL （-N） （ -BS）
EAHV-M1800YCL （-N） （ -BS）
EACV-M1500YCL （-N） （ -BS）
EACV-M1800YCL （-N） （ -BS）
2020

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  • Page 1 2020 AIR CONDITIONER Service Handbook Model EAHV-M1500YCL （-N） （ -BS） EAHV-M1800YCL （-N） （ -BS） EACV-M1500YCL （-N） （ -BS） EACV-M1800YCL （-N） （ -BS）...
  • Page 2 CAUTION IMPORTANT Indicates a risk of damage to the unit or other components in the system All electric work must be performed by personnel certified by Mitsubishi Electric. General WARNING To reduce the risk of injury, keep children away while Do not use refrigerant other than the type indicated in the installing, inspecting, or repairing the unit.
  • Page 3 CAUTION To reduce the risk of fire or explosion, do not place flammable To prevent environmental pollution, dispose of brine in materials or use flammable sprays around the unit. the unit and cleaning solutions according to the local regulations. Do not operate the unit without panels and safety guards properly installed.
  • Page 4 Any additional parts must be installed by qualified personnel. Only use the parts specified by Mitsubishi Electric. Properly dispose of the packing materials. Plastic bags pose suffocation hazard to children. Take appropriate safety measures against wind gusts and...
  • Page 5 To reduce the risk of injury or electric shock, switch off the To reduce the risk of current leakage, overheating, smoke, or main power before performing electrical work. fire, use properly rated cables with adequate current carrying capacity. All electric work must be performed by a qualified electrician according to the local regulations, standards, Keep the unsheathed part of cables inside the terminal and the instructions detailed in the Installation Manual.
  • Page 6 To reduce the risk of power capacity shortage, always use a Please build the water circuit so that it is a closed dedicated power supply circuit. system. Have a backup system, if failure of the unit has a potential for Do not use water directly for showers or other applications.
  • Page 7 HWE20010...

  • Page 8: Table Of Contents

    CONTENTS I Read Before Servicing [1] Read Before Servicing......................3 [2] Necessary Tools and Materials ....................4 [3] Brazing............................5 [4] Air Tightness Test........................6 [5] Vacuum Drying (Evacuation) ....................7 [6] Refrigerant Charging ........................ 8 [7] Remedies to be taken in case of a Refrigerant Leak..............8 [8] Characteristics of the Conventional and the New Refrigerants ..........
  • Page 9 CONTENTS HWE20010...
  • Page 10 I Read Before Servicing [1] Read Before Servicing ....................... 3 [2] Necessary Tools and Materials..................4 [3] Brazing..........................5 [4] Air Tightness Test ......................6 [5] Vacuum Drying (Evacuation) ..................... 7 [6] Refrigerant Charging......................8 [7] Remedies to be taken in case of a Refrigerant Leak ............8 [8] Characteristics of the Conventional and the New Refrigerants .........
  • Page 11 - 2 - HWE20010...

  • Page 12: Read Before Servicing

    [ I Read Before Servicing ] I Read Before Servicing [1] Read Before Servicing 1. Check the type of refrigerant used in the system to be serviced. Refrigerant Type Air-coold Chilling Unit e-series EAHV/EACV-M1500/1800YCL: R32 2. Check the symptoms exhibited by the unit to be serviced. Refer to this service handbook for symptoms relating to the refrigerant cycle.

  • Page 13: Necessary Tools And Materials

    [ I Read Before Servicing ] [2] Necessary Tools and Materials Prepare the following tools and materials necessary for servicing the unit. Tools for use with R32 (Adaptability of tools that are for use with R22 or R407C) 1. To be used exclusively with R32 (not to be used if used with R22 or R407C) Tools/Materials Notes Gauge Manifold...

  • Page 14: Brazing

    [ I Read Before Servicing ] [3] Brazing No changes have been made in the brazing procedures. Perform brazing with special care to keep foreign objects (such as oxide scale, water, and dust) out of the refrigerant system. Example: Inside the brazed connection Use of oxidized solder for brazing Use of non-oxidized solder for brazing 1.

  • Page 15: Air Tightness Test

    [ I Read Before Servicing ] [4] Air Tightness Test No changes have been made in the detection method. Note that a refrigerant leak detector for R22 will not detect an R32 leak. Halide torch R22 leakage detector 1. Items to be strictly observed Pressurize the equipment with nitrogen up to the design pressure (4.15MPa [601psi]), and then judge the equipment's air tightness, taking temperature variations into account.

  • Page 16: Vacuum Drying (Evacuation)

    [ I Read Before Servicing ] [5] Vacuum Drying (Evacuation) (Photo1) 15010H (Photo2) 14010 Recommended vacuum gauge: ROBINAIR 14010 Thermistor Vacuum Gauge 1. Vacuum pump with a reverse-flow check valve (Photo1) To prevent the vacuum pump oil from flowing into the refrigerant circuit during power OFF or power failure, use a vacuum pump with a reverse-flow check valve.

  • Page 17: Refrigerant Charging

    [ I Read Before Servicing ] 7. Notes Apply a vacuum through the check joints on the low pressure sides. Evacuating the system from the high-pressure side may damage the compressor. [6] Refrigerant Charging Cylinder with a siphon Cylinder without a siphon Cylin- Cylin- Cylinder color R32 is light blue.

  • Page 18: Characteristics Of The Conventional And The New Refrigerants

    [ I Read Before Servicing ] [8] Characteristics of the Conventional and the New Refrigerants 1. Chemical property The new refrigerant R32 is as low in toxicity and slightly flammable refrigerant. However, because the specific gravity of vapor refrigerant is greater than that of air, leaked refrigerant in a closed room will accumulate at the bottom of the room and may cause hypoxia.

  • Page 19: Precautions For Handling Equipment Using R32

    [ I Read Before Servicing ] [9] Precautions for handling equipment using R32 When handling the units that use R32 refrigerant, observe the following notes. (The notes are based on the precautions re- garding R32 refrigerant contained in IEC 60335-2-40.) 1.
  • Page 20 Where electrical components are being changed, they shall be fit for the purpose and to the correct specification. At all times the MITSUBISHI ELECTRIC's Installation Manual and Service Handbook shall be followed. If in doubt, consult the dealer's technical department for assistance.
  • Page 21 5) Pump down refrigerant system, if possible. 6) Make sure that cylinder is situated on the scales before recovery takes place. 7) Start the recovery machine and operate in accordance with MITSUBISHI ELECTRIC's instructions. 8) Do not overfill cylinders. (No more than 80% volume liquid charge) 9) Do not exceed the maximum working pressure of the cylinder, even temporarily.
  • Page 22 [ I Read Before Servicing ] 10. Appropriate refrigerant recovery method 1) When removing refrigerant from a system, either for repairing or decommissioning, it is recommended good practice that all refrigerants are removed safely. 2) When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. Ensure that the correct number of cylinders for holding the total system charge are available.
  • Page 23 [ I Read Before Servicing ] Repair 1) Portable equipment shall be repaired outside or in a workshop specially equipped for servicing units with slightly flammable refrigerants. 2) Ensure sufficient ventilation at the repair place. 3) Be aware that malfunction of the equipment may be caused by refrigerant loss and a refrigerant leak is possible. 4) Discharge capacitors in a way that won't cause any spark.
  • Page 24 [ I Read Before Servicing ] 12. Installation restrictions Do not install the unit where combustible gas may leak. - If combustible gas accumulates around the unit, fire or explosion may result. • Provide sufficient space around the unit for effective operation, efficient air movement, and ease of access for maintenance.
  • Page 25 [ I Read Before Servicing ] 13. Regulatory requirements for safety Unit vent valve Safety valve expansion tank Req ired ite s Note fail re of the aterside heat exchanger in the nit the refrigerant ay leak fro the a to atic air A to atic air vent valve vent valve so install it in a place here the refrigerant not acc...

  • Page 26: Notes On Refrigerating Machine Oil

    [ I Read Before Servicing ] [10] Notes on Refrigerating Machine Oil 1. Refrigerating machine oil in the HFC refrigerant system HFC type refrigerants use a refrigerating machine oil different from that used in the R22 system. Note that the ester oil used in the system has properties that are different from commercially available ester oil. Different types of oil are used for R407C/R410A and for R32.
  • Page 27 [ I Read Before Servicing ] - 18 - HWE20010...

  • Page 28: Restrictions

    II Restrictions [1] Electrical Wiring Installation ..................... 21 [2] System Configurations..................... 24 [3] Switch Types and the Factory Settings................25 [4] Configuring the Settings....................28 [5] Water Pipe Installation ..................... 39 - 19 - HWE20010...
  • Page 29 - 20 - HWE20010...

  • Page 30: Electrical Wiring Installation

    [ II Restrictions ] II Restrictions [1] Electrical Wiring Installation [1] Main Power Supply Wiring and Switch Capacity Schematic Drawing of Wiring (Example) <A>:Switch (with current breaking capability) <B> <A> 3N~380–415V <B>:Current leakage breaker <C> , L3, N <C>:Unit Main power supply wire size, switch capacities, and system impedance Local switch (A) Minimum wire size (mm Max.
  • Page 31 [ II Restrictions ] [2] Cable Connections 1. Schematic Diagram of a Unit and Terminal Block Arrangement <Unit: mm> <Service side> Power supply wiring (from the side) Terminal box Power supply wiring (from the bottom) Terminal box <Unit bottom> See “Detailed drawing” <Service side>...
  • Page 32 [ II Restrictions ] 2. Precautions when fastening screws * Faulty contacts due to loose screws may cause overheating and fire. * Using the circuit board while it is damaged may cause overheating and fire. <1> Screw fastening torque Power supply terminal block, M8 screw: 10 to 13.5 N·m Use the following methods to check that the screws have been fastened.

  • Page 33: System Configurations

    [ II Restrictions ] [2] System Configurations The system must be configured only by personnel certified by Mitsubishi Electric. [1] Schematic Diagrams of Individual and Multiple Unit Connection Systems (1) Individual system External temperature sensor 2 (option) Flow switch MAIN...

  • Page 34: Switch Types And The Factory Settings

    [ II Restrictions ] [3] Switch Types and the Factory Settings (1) Switch names and functions Terminal box Terminal box Control box for MAIN circuit Control box for SUB circuit <Right side> <Left side> There are three main ways to set the settings as follows: 1) Dip switches (SW4 - SW7) 2) Dip switches used in combination with the push switches 3) Rotary switches...
  • Page 35 [ II Restrictions ] Different types of switches on the PCB [Control board] [Enlarged view of operation area] Push switch (SWP1) Operation area Push switch (SWP2) Push switch (SWP3) LED display Rotary switch (SWU2) (0-9) Rotary switch (SWU1) (0-9) Dip switch (SW7) Dip switch (SW6) Dip switch (SW5) Dip switch (SW4)
  • Page 36 "-" in the table indicates that the function in the corresponding row will be disabled regardless of the actual switch setting. The factory setting for these items is OFF. * Connection to a BMS requires an installation of Procon A1M (Modbus interface), which is available from MITSUBISHI ELECTRIC UK. Use a BMS with insulation.

  • Page 37: Configuring The Settings

    [ II Restrictions ] [4] Configuring the Settings The settings must be set only by a qualified personnel. 1. System configuration (1) Set the dip switches. (System setting) MAIN circuit board SUB circuit board Switch settings on the MAIN circuit Set the dip switches (labeled A in the figure at right) that correspond to the items below, according to the local system.
  • Page 38 [ II Restrictions ] Setting the switches on the system leader unit Make sure the address of the MAIN circuit on the Main circuit board SUB circuit board main module is set to "1" (labeled A in the figure at right) and that the address of the SUB circuit on the main module is set to "51"...
  • Page 39 [ II Restrictions ] Selector switch settings for local operation [ON] Unit operation [Remote] Controller operation [OFF] Unit stop [Local] Local operation Heating Remote Forced PumpOn Not used Cooling Local Normal PumpOff [Cooling] Cooling operation [Forced] When the unit stops, fan operates. [Heating] Heating operation [Normal] When the unit stops, fan does not operate.
  • Page 40 [ II Restrictions ] 2. Making the setting value Use the LED display and the three push switches (SWP1 (↑), SWP2 (↓), and SWP3 (Enter)) to change the current settings on the circuit board and to monitor various monitored values. (1) Setting procedures Take the following steps to set the push switches SWP1 through SWP3.
  • Page 41 [ II Restrictions ] (2) Table of settings items Set dip switches SW7-1, SW7-2, and SW4 as shown in the table below to set the value for the items in the "Setting item" column. Need or non-need to set the setting *5 System Group switch Dip switch setting (SW4) *2...
  • Page 42 [ II Restrictions ] Need or non-need to set the setting *5 System Group switch Dip switch setting (SW4) *2 Setting Item Default Notes setting *1 SW7-1 Preset temp. A (Cooling) 4ºC Range 4–30ºC 9 10 SW7-1 Preset temp. B (Cooling) 30ºC Range 4–30ºC 9 10...
  • Page 43 [ II Restrictions ] 3. Setting procedures (1) Example of system setting 1. Making the settings for the initial start-up process (A) Single unit Setting address 1 Turn off the power. Address [1/51] System leader unit (Address 1 SW5-2, 5-3: ON) System leader unit Turn the power back on.
  • Page 44 [ II Restrictions ] (C) System leader unit and group leader unit (3 groups, 1 unit in each group) Address [1/51] System leader unit Remote controller Address [2/52] Group leader unit Address [3/53] Group leader unit (1) Setting address 1 (2) Setting address 2 Turn off the power.
  • Page 45 [ II Restrictions ] (D) System leader unit, Group leader unit and Sub unit (2 groups, 3 units in each group) Address [1/51] Address [2/52] Address [3/53] System leader unit Sub unit Sub unit Remote controller Address [4/54] Address [5/55] Address [6/56] Group leader unit Sub unit...
  • Page 46 [ II Restrictions ] 2. Multiple unit control By setting SW5-6 to ON for address 1, optimum control of number of operating units will be performed. All units will simultaneously operate when SW5-6 is set to OFF. (A) System leader unit, group leader unit, and sub unit Address [1/51] Address [2/52] Address [3/53]...
  • Page 47 [ II Restrictions ] 3. Example of system configuration Optimum control of number of operating units Address [1/51] Address [2/52] Address [3/53] Address [4/54] Address [5/55] Address [6/56] Group leader Group leader Group leader Group leader Group leader System leader unit unit unit unit...

  • Page 48: Water Pipe Installation

    [ II Restrictions ] [5] Water Pipe Installation [1] Schematic Piping Diagram and Piping System Components 1. Water circuit Please build the water circuit so that it is a closed system. Do not use water directly for showers or other applications. Do not allow other heat source water to mix with the water circuit.
  • Page 49 [ II Restrictions ] [2] Standard piping type 65A housing type joint Water outlet Water inlet Connection detail Groove pipes at chiller side The dimension of the groove pipe at the chiller side Victaulic standard groove specifications (Unit: mm) Pipe size 2-1/2B (65A) ø76.1 ø72.2...
  • Page 50 [ II Restrictions ] [3] Inside header piping type Water outlet Water inlet 150A housing type joint Straub joint Connection detail The dimension of the groove pipe Groove pipes at chiller side at the chiller side (Unit: mm) Pipe size 6B (150A) ø165.1 ø160.8...
  • Page 51 [ II Restrictions ] [4] Notes on pipe corrosion Water processing and water quality control Poor-quality circulating water can cause the water-side heat exchanger to scale up or corrode, reducing heat-exchange per- formance. Properly control the quality of the circulating water. Removing foreign objects and impurities in the pipes During installation, keep foreign objects, such as welding and sealant fragments and rust, out of the pipes.
  • Page 52 [ II Restrictions ] (6) Connecting pipes made from different materials If different types of metals are placed in direct contact with each other, the contact surface will corrode. Install an insulating material between pipes that are made of different materials to keep them out of direct contact with each other.
  • Page 53 [ II Restrictions ] [6] Installing the external water temperature sensor TW-TH16 1. Parts that are required to install an external water Wire specifications temperature sensor Wire size 2-core cable Min. 1.25 mm (1) External water temperature sensor Type CVVS or CPEVS (2) Wiring to connect the sensor and the unit* Maximum length 20 m (3) Wiring terminals to connect the wiring to the sensor and...
  • Page 54 [ II Restrictions ] [7] Ensuring enough water in the water circuit Required amount of water If the amount of water in the water circuit (circulating water circuit) is insufficient, the unit operation hours may become shorter or the amount of water temperature change to be controlled may become extremely large. Also, the defrost operation during the heating mode may not function properly.
  • Page 55 [ II Restrictions ] [8] Water Piping Size and Location 1. Standard piping type Drain R1 1/2 Water outlet 65A housing type joint Water inlet 65A housing type joint 2. Inside header piping type Drain Water outlet R1 1/2 150A housing type joint Water inlet 150A housing type joint (60)

  • Page 56: Unit Components

    III Unit Components [1] Unit Components and Refrigerant Circuit ................ 49 [2] Control Box of the Unit..................... 51 [3] Unit Circuit Board......................53 - 47 - HWE20010...
  • Page 57 - 48 - HWE20010...

  • Page 58: Unit Components And Refrigerant Circuit

    [ III Unit Components ] III Unit Components [1] Unit Components and Refrigerant Circuit 1. Unit Components Fan (1A) Fan (2B) Fan (1B) Fan (2A) Air heat exchanger Air heat (2A) exchanger (1A) Drain piping connection port Cold/hot air outlet Cold/hot water inlet <Service side>...
  • Page 59 [ III Unit Components ] 2. Refrigerant circuit Electronic expansion valve C (1A, 1B, 2A, 2B) Water heat exchanger (1 system) Control box 2 Control box 1 Cooling fan (Plate type) Breaker box Electronic expansion valve H (1A, 1B, 2A, 2B) Water heat exchanger (2 system) Compressor (2A) Compressor (1A)

  • Page 60: Control Box Of The Unit

    [ III Unit Components ] [2] Control Box of the Unit (1) Control box (The main and sub circuits are common.) DC Reactor Terminal block Rush current protection resister Fan board Noise filter board Inverter board (INV board) CAP board Terminal block - 51 - HWE20010...
  • Page 61 [ III Unit Components ] Power board Control board CONT board (IO-CONT) (2) Terminal box Control wiring under 24 VAC terminal block Display board Terminal block Control wiring over 100 VAC terminal block - 52 - HWE20010...

  • Page 62: Unit Circuit Board

    [ III Unit Components ] [3] Unit Circuit Board 1. Control board (MAIN board) CN4/4A/4B/4C CNPS CN604 Serial communication signal output CN603 Pressure switch 5 VDC output Cooling fan control signal output error signal input Serial communication signal output Power-supply Inverter reset signal output signal output CN110...
  • Page 63 [ III Unit Components ] 2. CONT board (IO-CONT) CN603 18 VDC output CN601 18 VDC output CN607 CN606 CN605 CN604 24 VDC output 24 VDC output 24 VDC output 24 VDC output - 54 - HWE20010...
  • Page 64 [ III Unit Components ] 3. Fan board CN106 CN101 18 VDC input 18 VDC input SW001 ON: No-load operation OFF: Normal operation OFF: Fixed Address switch Address switch CN080 Serial communication signal Signal input GND (MAIN curcuit board) Signal output GND (MAIN circuit board) CNDCN Bus voltage input (N)
  • Page 65 [ III Unit Components ] 4. Inverter board (INV board) CN-P, CN-N Connects to connector RYPN SC-P DCL terminal IGBT (rear) SC-L1 SC-P1 Input (L1) DCL terminal SC-L2 Input (L2) SC-L3 Input (L3) CNRY 12 VDC SC-U GND (Power-supply board) Inverter output (U) SC-V LED1...
  • Page 66 [ III Unit Components ] 5. Noise filter board - 57 - HWE20010...
  • Page 67 [ III Unit Components ] 6. CAP board CN-CAP Connects to INV42Y FT-P1C Connects to INV42Y C1, C3 Smoothing capacitor 1) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components. Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less.
  • Page 68 [ III Unit Components ] 7. Power board CN100 L2-N Voltage input CNDC Power-supply output 9 VDC output 13 VDC output CN303 63H pressure switch CN304 63H error detection output CNFAN1 Power-supply output CNINV CNFAN2 Power-supply output 16 VDC output Power-supply output 18 VDC output 16 VDC output...
  • Page 69 [ III Unit Components ] 8. Display board 12 VDC input - 60 - HWE20010...
  • Page 70 [ III Unit Components ] 9. Conv board - 61 - HWE20010...
  • Page 71 [ III Unit Components ] - 62 - HWE20010...

  • Page 72: Remote Controller

    IV Remote Controller [1] Using the Remote Controller (PAR-W31MAA) ..............65 - 63 - HWE20010...
  • Page 73 - 64 - HWE20010...

  • Page 74: Using The Remote Controller (Par-W31Maa)

    [ IV Remote Controller ] IV Remote Controller [1] Using the Remote Controller (PAR-W31MAA) <1> Power ON/OFF Unit1 Press the [ON/OFF] button. During operation Next The ON/OFF lamp will light up in green, and the operation will start. Unit1 Pressing the [ON/OFF] button brings up a confirmation screen. When it appears, press the [F3] button.
  • Page 75 [ IV Remote Controller ] <3> Using Weekly timer Function description Following settings can be used to change the operating schedule according to the day of the week. • Set the schedule for ON/OFF, operation mode and set temperature for each day of the week. Button operation Select "Weekly timer"...
  • Page 76 [ IV Remote Controller ] In the Operation setting screen, press the [F1] button to move the cursor to Unit1 "Schedule". Power Save Press the [F3] button to select "Yes". Schedule Fan Mode Normal Anti-freeze Next <4> Using Period timer Function description Following settings can be made to change the specified period and daily operating schedule.
  • Page 77 [ IV Remote Controller ] The pattern setting screen will be displayed. Unit1 * Refer to the section on Weekly timer for details on using the pattern setting screen. Anti-Freeze Heating Weekly timer operation will be disabled in the following situations: •...
  • Page 78 [ IV Remote Controller ] <5> Using power save Function description Power Save is a function that regulates the compressor rotation count either daily or according to a specified period and according to a preset time interval or regulated capacity. Use this function when you want to inhibit electric power use. A typical scenario where Power Save can be used to inhibit the power consumption for water heating would be periods of particularly heavy operating loads for air conditioning and other equipment, such as periods when large numbers of people check in at a hotel or similar accommodation facility.
  • Page 79 [ IV Remote Controller ] Press the [F1] to [F4] buttons to set the Power Save start time, end time and Unit1 control value. In the Operation setting screen, press the [F1] button to move the cursor to Unit1 Power Save. Power Save Press the [F3] button to select "Yes".
  • Page 80 V Electrical Wiring Diagram [1] Electrical Wiring Diagram....................73 - 71 - HWE20010...
  • Page 81 - 72 - HWE20010...

  • Page 82: Electrical Wiring Diagram

    [ V Electrical Wiring Diagram ] V Electrical Wiring Diagram [1] Electrical Wiring Diagram EAHV-M1500, 1800YCL (-N)(-BS) EACV-M1500, 1800YCL (-N)(-BS) - 73 - HWE20010...
  • Page 83 [ V Electrical Wiring Diagram ] EAHV-M1500, 1800YCL (-N)(-BS) EACV-M1500, 1800YCL (-N)(-BS) - 74 - HWE20010...

  • Page 84: Refrigerant Circuit

    VI Refrigerant Circuit [1] Refrigerant Circuit Diagram ..................... 77 [2] Principal Parts and Functions ..................79 - 75 - HWE20010...
  • Page 85 - 76 - HWE20010...

  • Page 86: Refrigerant Circuit Diagram

    [ VI Refrigerant Circuit ] VI Refrigerant Circuit [1] Refrigerant Circuit Diagram  EAHV-M1500, 1800YCL(-N) - 77 - HWE20010...
  • Page 87 [ VI Refrigerant Circuit ]  EACV-M1500, 1800YCL(-N) - 78 - HWE20010...

  • Page 88: Principal Parts And Functions

    [ VI Refrigerant Circuit ] [2] Principal Parts and Functions 1. Outdoor unit Part Symbols Notes Usage Specifications Check method name (functions) Com- Adjusts the amount of circulat- Low-pressure shell scroll pres- (Comp) ing refrigerant by adjusting the compressor operating frequency based on Wirewound resistance the operating pressure data 20°C[68°F] : 0.092 ohm...
  • Page 89 [ VI Refrigerant Circuit ] Part Symbols Notes Usage Specifications Check method name (functions) Thermi TH7,8 1) Detects suction tempera- Degrees Celsius Resistance check stor (ACC inlet Ref ture = 15k temperature) 2) Provide low pressure pro- = 3385 0/80 tection R = 15 3385...

  • Page 90: Control

    VII Control [1] Functions and Factory Settings of the Dipswitches ............83 [2] Operating characteristics and Control Capabilities ............91 - 81 - HWE20010...
  • Page 91 - 82 - HWE20010...

  • Page 92: Functions And Factory Settings Of The Dipswitches

    [ VII Control ] VII Control [1] Functions and Factory Settings of the Dipswitches 1. Priority order of the water-temperature-setting-input-signal sources Water temperature can be controlled by using the signals from the four types of input sources listed below. The setting for the item with higher priority will override the settings for the items with lower priorities. The water temperature will be controlled according to the temperature setting in the "Target water temperature"...
  • Page 93 [ VII Control ] 2. Water-temperature setting Different water temperature settings can be set for different modes. Set the dip switches on the circuit board as follows to make the settings for the items described in this section. Press the push switch SWP3 to enable the configuration changes. Press the push switches SWP1 (↑) or SWP2 (↓) to increase or decrease the value.
  • Page 94 [ VII Control ] Heating ECO When the outdoor temp A and B are set to the same value, the Heating ECO line will be as follows. Water temp. Water temp. Setting Setting water water temp A temp A Setting Setting water water...
  • Page 95 [ VII Control ] 3. Peak-demand control operation Peak-demand control is a function used to control the power consumptions of the units. The compressor's maximum operating frequency will be controlled according to the peak-demand control signal. Set the dip switches on the circuit board as follows to make the settings for the items described in this section. Press the push switch SWP3 to enable the configuration changes.
  • Page 96 [ VII Control ] 5. Setting the water temperature using analog signal input When dip switch SW5-7 is set to ON (Enable external input), SW5-8 is set to OFF, and SW5-9 is set to OFF, the atures A and B and the type of analog input signal. target water temperature varies with the preset temper Set the dip switches on the circuit board as follows to make the settings for the items described in this section.
  • Page 97 [ VII Control ]  When the water temperature setting input signal type is 0-10 V • External analog input signal of 0 V: Preset temp. A • External analog input signal of 10 V: Preset temp. B • External analog input signal of between 0 and 10 V: the preset temperature will be linearly interpolated. Preset temp B Preset temp A 10 V...
  • Page 98 [ VII Control ]  When the water temperature setting input signal type is 0-10 V • External analog input signal of 0 V: 0% • External analog input signal of 10 V: 100% • External analog input signal of between 0 and 10 V: the percent will be linearly interpolated. Load ratio 100% 10 V...
  • Page 99 [ VII Control ] 7. Setting the supplementary heater signal output conditions A temperature at which the signal output to operate supplementary heaters can be selected. Supplementary heater signal output conditions The operation command signal is ON and at least one of the following two conditions is met. 1 Water-temperature control option (SW5-4) is set to OFF, the inlet water temperature drops below a set water temperature, and the outdoor temperature drops below a set outdoor temperature.

  • Page 100: Operating Characteristics And Control Capabilities

    [ VII Control ] [2] Operating characteristics and Control Capabilities Outline of Control Method -1- Operating characteristics Function Component Symbol Control/ Unit Trigger condition Detection tion Unit Pressure High-pressure (3.25) protection switch switch OFF MPa 4.15 Pressure High-pressure OFF MPa sensor sensor Low-pressure...
  • Page 101 [ VII Control ] Startup sequence rotation -2- Initial control When the power is turned on, the initial processing of the microcomputer is given top priority. During the initial processing, processing of the operation signal is suspended and is resumed after the initial processing is completed.
  • Page 102 [ VII Control ] -4- LEV in the main circuit Operating range of the LEV The opening range of the LEV is between 100 and 2000 (fully open). LEV operation speed 100 pulse/sec Open Close 200 pulse/sec At startup During startup, the valve will be moved to the Initial Setting. During operation After startup, the LEV opening will be controlled every 20 seconds according to the changes in compressor frequency, pres- sure, and temperature.
  • Page 103 [ VII Control ] -7- Anti-short-cycling protection The unit has a 3-minute restart-delay function to protect the compressor from short-cycling. This function is effec- 3-minute restart delay function The 3-minite restart-delay function will tive even after a power failure. be triggered in the following situations: (1) The setting (Local, Off, Remote) was changed, or (2) after a power failure.
  • Page 104 [ VII Control ] Control Method -8- Automatic operation of pump for freeze-up protection 1. Purpose This is a function to protect the water circuit from freezing up in winter. 2. Pump wire connection CN3K 1 2 3 Pump error power supply 50Hz 380/400/415V...
  • Page 105 [ VII Control ] Cooling/heating Circuit Control and General Function of System Equipment -9- Water-temperature control Water temperature can be controlled in the following way. SW5-4 SW5-5 Outlet-water-temperature-based control External temperature sensor 1 External temperature sensor 2 An optional External temperature sensor (TW-TH16) is required. Outlet water System Sub unit...
  • Page 106 [ VII Control ] 2. Normal Thermo-ON/OFF operations DIFF1 = 3 ºC (Initial setting) DIFF2 = 2 ºC (Initial setting) Thermo-ON sensor Control method Thermo-OFF conditions conditions Outlet water temperature is below the Outlet water temperature is greater than "Preset temperature - DIFF1 (ºC)". the "Preset temperature + DIFF2 (ºC)".
  • Page 107 [ VII Control ] Operation Mode -10- Remote water temperature setting input signal type By setting SW5-7 to ON, external analog signals can be used to set the water temperatures. Analog input type can be selected from the following four types: 4-20 mA 1-5 V 0-10 V...

  • Page 108: Test Run Mode

    VIII Test Run Mode [1] Items to be checked before a Test Run ................. 101 [2] Test Run Method ......................103 [3] Operating the Unit......................104 [4] Refrigerant ........................105 [5] Symptoms that do not Signify Problems ................ 105 - 99 - HWE20010...
  • Page 109 - 100 - HWE20010...

  • Page 110: Items To Be Checked Before A Test Run

    [ VIII Test Run Mode ] VIII Test Run Mode [1] Items to be checked before a Test Run (1) Check for refrigerant leak and loose cables and connectors. (2) Measure the insulation resistance between the power supply terminal block and the ground with a 500V megger and make sure it reads at least 1.0Mohm.
  • Page 111 [ VIII Test Run Mode ] (10) Check for proper circulating water flow rate. Measure the circulating water flow rate, if possible. If it is not, check that the temperature difference between the outlet and inlet temperatures is between 3 and 10 ºC. A temperature difference of 12 ºC or more indicates not enough water flow. Check for air pockets in the pipe, and make sure that the pump has the appropriate capacity for the circuit.

  • Page 112: Test Run Method

    [ VIII Test Run Mode ] [2] Test Run Method (1) PAR-W31MAA [Return] button [Menu] button [Select] button [ON/OFF] button ON/OFF lamp Function button [F1], [F2], [F3], and [F4] from the left) Backlit LCD Operation procedures Press the [ON/OFF] button. The ON/OFF lamp will light up in green and the operation will start.

  • Page 113: Operating The Unit

    [ VIII Test Run Mode ] [3] Operating the Unit 1. Initial Operation (1) Make sure the Run/Stop switch that controls the unit on the local control panel is switched off. (2) Switch on the main power. (3) Leave the main power switched on for at least 12 hours before turning on the Run/Stop switch that controls the unit on the on-site control panel to warm up the compressor.

  • Page 114: Refrigerant

    [ VIII Test Run Mode ] [4] Refrigerant Unit type EAHV/EACV-M1500/1800YCL Refrigerant type EAHV: 11.5 kg × 4 Refrigerant charge EACV: 4.7 kg × 4 * Amount of factory-charged refrigerant is 3 (kg) × 4. Please add the refrigerant on site. [5] Symptoms that do not Signify Problems Symptom Remote controller display...
  • Page 115 [ VIII Test Run Mode ] - 106 - HWE20010...

  • Page 116: Troubleshooting

    IX Troubleshooting [1] Maintenance items......................109 [2] Troubleshooting ......................114 [3] Troubleshooting Principal Parts ..................119 [4] Refrigerant Leak ......................135 [5] Parts Replacement Procedures ..................136 [6] Draining the water from the water-pipes of the unit and from the water heat exchanger ... 160 - 107 - HWE20010...
  • Page 117 - 108 - HWE20010...

  • Page 118: Maintenance Items

    [ IX Troubleshooting ] IX Troubleshooting [1] Maintenance items 1. Operation status monitor Check the contents in the maintenance tool. Input Mark Official Name Meaning CN3D2 Run/Stop (*Setting change through contact input can only be made when the power is turned on.) CN3S2 Fan mode Forced/Normal...
  • Page 119 [ IX Troubleshooting ] – Phase-W current of compressor B THHSB – Heat sink temperature B VunbB – Voltage unbalance B SHsB – Target SH B TdsB – Target Td B – Inlet ACC SH B – SC B Two_ave –...
  • Page 120 [ IX Troubleshooting ] SH/SC-CtrlB – Target discharge temp. control ON/OFF (B) All-Units – The number of units Run-Units – The number of operating units Unit1~Unit24 – Operating condition (Unit 1~24) Thermo OFF/Thermo ON/Error/- Flow rate – Water flow rate TotalA (hr) –...
  • Page 121 [ IX Troubleshooting ] Schedule Mark Official Name Meaning Time – Time Month – Month (00-12) – Day (00-99) Demand (%) – Maximum capacity demand (%) Output Mark Official Name Meaning MAIN BOX = MAIN BOX = Pump operation command output SUB BOX = MAIN BOX = MAIN BOX = Defrost signal output...
  • Page 122 [ IX Troubleshooting ] 2. Operation status before error Check the contents in the maintenance tool. Time of data storage before error Mark Official Name Meaning Thermistor Discharge Ref. temperature A Thermistor Discharge Ref. temperature B Thermistor Air hex Ref. temperature A Thermistor Air hex Ref.

  • Page 123: Troubleshooting

    Troubleshooting according to the remote controller malfunction or the external input error Both for MA remote controller and ME remote controller Troubleshooting must be performed only by personnel certified by Mitsubishi Electric. 1. Diagnosing Problems for which No Error Codes Are Available If a problem occurs, please check the following.
  • Page 124 [ IX Troubleshooting ] 2. Diagnosing Problems Using Error Codes If a problem occurs, please check the following before calling for service. (1) Check the error code against the table below. (2) Check for possible causes of problems listed in the "Cause" column that correspond to the error code. (3) If the error codes that appear on the display are not listed in the table below, or no problems were found with the items listed in the "Cause"...
  • Page 125 [ IX Troubleshooting ] Error reset *2 Error Cause Cause Operation SW Error type code *1 (Installation/Setting error) (Parts problems) Selector Remote switch controller Discharge temperature fault No water • High-pressure sensor fault (A discharge refrigerant temperature of 120ºC or Abrupt change in water temperature •...
  • Page 126 [ IX Troubleshooting ] Error reset *2 Error Cause Cause Operation SW Error type code *1 (Installation/Setting error) (Parts problems) Selector Remote switch controller 530* Inverter ACCT sensor/circuit fault • INV board fault error (117) Open-circuited IPM/loose ACCT sensor • ACCT sensor fault 530* •...
  • Page 127 [ IX Troubleshooting ] Abnormal stop condition table Preliminary error One side circuit can be Another unit can be Error code Error type code operated operated in the group 1102 Discharge temperature fault 1202 1138 Hot water abnormal rise Discharge SH fault 1276 1176 1189...

  • Page 128: Troubleshooting Principal Parts

    [ IX Troubleshooting ] [3] Troubleshooting Principal Parts High-Pressure Sensor -1- High pressure sensor (63HS) 1. Perform a check while comparing the detected pressure by the high pressure sensor with the high pressure gauge pressure. When the digital display changeover switch (SW4) is set as follows, the detected pressure of the high pressure sen- sor is displayed on the LED (LD1).
  • Page 129 [ IX Troubleshooting ] Low-Pressure Sensor -2- Low pressure sensor (63LS) 1. Perform a check while comparing the pressure detected by the low pressure sensor with the pressure of the low pressure gauge. When the digital display changeover switch (SW4) is set as follows, the detected pressure of the low pressure sensor is displayed on the LED (LD1).
  • Page 130 [ IX Troubleshooting ] Solenoid Valve -3- Temperature sensor Perform a check while comparing sensor detection temperature and measured value. See the diagram below for comparison with sensor resistance value. 1. High temperature thermistor (TH1, TH2, TH101, TH102) High temperature thermistor characteristics Temperature (°C) Upper limit value of the sensor temperature characteristic 150°C or more...
  • Page 131 [ IX Troubleshooting ] -4- LEV 1. General descriptions of the operation of the LEV in the main circuit LEV1 is driven by the pulse signal from the circuit board and is controlled by a stepping motor. The valve opening changes according to the number of pulses (All closed 40 ~ all open 2000). 1) Control board and LEV Control board DC12V...
  • Page 132 [ IX Troubleshooting ] (1) Judgment methods and possible failure mode Malfunction Judgment method Remedy mode Microcomputer Disconnect the control board connector and connect When the drive circuit has a driver circuit fail- the check LED as shown in the figure below. problem, replace the control board.
  • Page 133 [ IX Troubleshooting ] 2. LEV coil removal procedure The LEV consists of a coil and a valve body that can be separated from each other. Body Coils Stopper Lead wire (1) Removing the coils Fasten the body tightly at the bottom (Part A in the figure) so that the body will not move, then pull out the coils toward the top.
  • Page 134 [ IX Troubleshooting ] Inverter -5- Inverter Replace only the compressor if only the compressor is found to be defective. Replace only the fan motor if only the fan motor is found to be defective. Replace the defective components if the inverter is found to be defective. If both the compressor and the inverter are found to be defective, replace the defective component(s) of both devices.
  • Page 135 [ IX Troubleshooting ] Error display/failure condition Measure/inspection item Inverter related errors Check the details of the inverter error in the error log at maintenance 4250, 4220, 4230, 4240, 5301, 5114, 0403 tool. Take appropriate measures to the error code and the error details in ac- cordance with [2] 2.Diagnosing Problems Using Error Codes.
  • Page 136 [ IX Troubleshooting ] (2) Inverter output related troubles Items to be checked Phenomena Remedy Disconnect the inverter Overcurrent error Replace the INV board. Check the output wire from the ter- (4250 Detail code No. 101, 102, INV board er- minals of the INV board 103, 106, and 107) ror detection...
  • Page 137 [ IX Troubleshooting ] Items to be checked Phenomena Remedy Remove the wire for the out- Fan motor megger failure Replace the fan motor. Check the fan door fan motor, and check the Failure when the megger is 1Mohm motor ground fan motor megger and the or less.
  • Page 138 [ IX Troubleshooting ] (3) Trouble treatment when the main power breaker is tripped Items to be checked Phenomena Remedy Check the breaker capacity. Use of a non-specified break- Replace it with a specified breaker. Perform Meg check between the Zero to several ohm, or Meg Check each part and wiring.
  • Page 139 [ IX Troubleshooting ] (5) Simple checking procedure for individual components of main inverter circuit Turn off the power supplied to the unit, and leave it off for at least 10 minutes. Check that the voltage across pins 1 (+) and 5 (-) of the connector RYPN1 is 20 VDC or less before removing components from the control box.
  • Page 140 [ IX Troubleshooting ] Judgment value (reference) Black ( + ) SC-P1 FT-N SC-L1 SC-L2 SC-L3 SC-P1 5 - 200 ohm 5 - 200 ohm 5 - 200 ohm CN-N Red (-) SC-L1 5 - 200 ohm SC-L2 5 - 200 ohm SC-L3 5 - 200 ohm Black ( + )
  • Page 141 [ IX Troubleshooting ] Control Circuit -6- Control Circuit Troubleshooting transmission power circuit of unit Check the voltage at the internal transmission terminal block (TB3) of outdoor unit. Check whether the transmission line is disconnected, 24-30 VDC check for contact failure, and repair the problem. Check the voltage at TB3 after removing transmission line from TB3.
  • Page 142 [ IX Troubleshooting ] Check for conductivity between TB12 and pin 1 of CN1 and between TB14 and pin 3 of CN1. Is there conductivity between them? Replace the noise filter board. Check the wiring between the noise filter board and TB1 of power-supply board, and also check connectors L2-N of TB1, TB12, and TB14.
  • Page 143 [ IX Troubleshooting ] Outdoor Unit Fan -7- Troubleshooting 1. Important notes If the unit or its refrigerant circuit components experience malfunctions, take the following steps to prevent recurrence. (1) Diagnose the problem and find the cause. (2) Before repairing leaks on the brazed sections on the pipes, recover the refrigerant. Braze under nitrogen purge to prevent oxidation.

  • Page 144: Refrigerant Leak

    • It may also be in violation of applicable laws. • MITSUBISHI ELECTRIC CORPORATION cannot be held responsible for malfunctions or accidents resulting from the use of the wrong type of refrigerant.

  • Page 145: Parts Replacement Procedures

    • It may also be in violation of applicable laws. • MITSUBISHI ELECTRIC CORPORATION cannot be held responsible for malfunctions or accidents resulting from the use of the wrong type of refrigerant.
  • Page 146 [ IX Troubleshooting ] Air purge valve BALL valve <Inside header piping type> - 137 - HWE20010...
  • Page 147 [ IX Troubleshooting ] Compressor Replacement Instructions Required tools ▪ Screwdriver (for M4 and M5 screws) ▪ Nippers (for cutting the tie band) ▪ Small ratchet (for M6 nuts) ▪ Metal saw ▪ Welding tool set * Notes on tie band (cable tie with a locking device) If you accidentally cut the cable tie on tie band during replace- ment, cut off the tie all the way to the locking device, and insert a regular cable tie (5 mm max.) through the locking...
  • Page 148 [ IX Troubleshooting ] Recover the refrigerant through the check joint Check joint (low-pressure (LP) side) on the left side of the (in order from top to bottom) unit next to the plate heat exchanger side. ▪ HP 2B * Each refrigerant circuit is independent. ▪...
  • Page 149 [ IX Troubleshooting ] Disconnect the check joint pipe located in front of the compressor by removing the braze from the areas shown in the figure. Brazed area Remove the three M5 screws from the Discharge thermistor compressor, and disconnect the compressor power line.
  • Page 150 [ IX Troubleshooting ] Remove the compressor by unscrewing the three M6 nuts. Compressor: Fixed with an M6 nut (5.6±0.6 Nm) * When removing the compressor, cut the tie band holding the wire in front of the compressor. Protect the four-way valve *When removing the compressor, tilt it forward.
  • Page 151 [ IX Troubleshooting ] Water-to-Refrigerant Heat Exchanger Replacement Instructions (Refrigerant pipe side) Required tools ▪ Screwdriver (for M5 screws) ▪ Nippers (for cutting the tie band) ▪ 17-mm spanners (for M10 nuts) ▪ 19-mm spanners (for M12 bolts and nuts) ▪...
  • Page 152 [ IX Troubleshooting ] Remove the service side panels from the opposite side of the service side. Panel: Fixed with M5 screws (3.0±0.3 Nm) Left side service panel × 2 Right side service panel × 2 M5 screw × 19 M5 screw ×...
  • Page 153 [ IX Troubleshooting ] Disconnect the water pipe from the heat exchanger to be replaced. Housing joint: M12 nut Housing joint (2 locations) < Right side > Housing joint (2 locations) (1-system side) (2-system side) M12 nut × 4 M12 nut × 4 Remove the upper joint plate from the water pipe 1-system side Joint plate...
  • Page 154 [ IX Troubleshooting ] Cut the tie band as required, and remove the 1-system side LEV coil. LEV coil EAHV type: 4 locations; EACV type: 2 locations Tie band Remove the thermistor from the pipe below the LEV. * Do the same for the 2-system. Go to the following steps for the instructions for the 1-system side and the 2-system side.
  • Page 155 [ IX Troubleshooting ] Remove the plate holding the injection LEV. 2-system side Plate: Fixed with M5 screw (3.0±0.3 Nm) Fixing plate M5 screw × 1 < Left side > Remove the pipe below and above the LEV by 2-system side removing the braze from the areas shown in the figure.
  • Page 156 [ IX Troubleshooting ] Unscrew the screws on the upper and lower 1-system side support plates of the LEV side heat exchanger. Support plate: Fixed with M5 screws (3.0±0.3 Nm) Disconnect the pipe by removing the braze. Liquid pipe: ø15.88 (2 locations) Remove the LEV pipe assembly from the heat exchanger.
  • Page 157 [ IX Troubleshooting ] Water-to-Refrigerant Heat Exchanger Replacement Instructions (Water pipe side) Required tools ▪ Screwdriver (for M5 screws) ▪ Nippers (for cutting tie band) ▪ 17-mm spanners (for M10 nuts) ▪ 19-mm spanners (for M12 bolts and nuts) ▪ Metal saw ▪...
  • Page 158 [ IX Troubleshooting ] Remove the service side panels from the opposite side of the service side. Panel: Fixed with M5 screws (3.0±0.3 Nm) Service panel × 2 M5 screw × 16 Left side service panel Right side service pannel M5 screw ×...
  • Page 159 [ IX Troubleshooting ] Remove the upper joint plate from the water pipe 1-system side Joint plate side. M10 nut × 4 Joint plate: Fixed with M10 nuts (26.5±4 Nm) Remove the lower support plate from the heat exchanger to be replaced. Joint plate M10 nut ×...
  • Page 160 [ IX Troubleshooting ] Remove the pipes below and above the LEV by 1-system side removing the braze from the areas shown in the figure. Liquid pipe: ø15.88 (2 locations) Cut the gas pipe with a metal saw. Gas pipe (Cut here.) * Note that there may be cases where there is not enough room for a pipe cutter.
  • Page 161 [ IX Troubleshooting ] Fan Replacement Instructions Required tools ▪ Screwdrivers (for M5 and M6 screws) ▪ Nippers (for cutting the tie band) ▪ Spanners (for M12 hexagon cap nuts) ▪ Stepladder (approx. 2 m) ▪ Scaffold board (approx. 1150 × 300 × 20 mm) * Notes on tie band (cable tie with a locking device) If you accidentally cut the cable tie on tie band during replace- ment, cut off the tie all the way to the locking device, and...
  • Page 162 [ IX Troubleshooting ] Remove the center panel by unscrewing the ten M5 screws from the panel. Panel: Fixed with ten M5 screws (3.0±0.3 Nm) Disconnect the fan motor relay connectors. * When replacing the fan motors (1A, 1B), remove the relay connectors on the right side.
  • Page 163 [ IX Troubleshooting ] Remove the propeller by unscrewing the M12 box nut. M12 box nut Propeller: Fixed with an M12 box nut (20±2 Nm) Remove the fan motor by unscrewing the four screws. Fan motor: Fixed with four M6 screws (5.0±0.5 Fan motor M6 screw ×...
  • Page 164 [ IX Troubleshooting ] LEV Replacement Instructions Required tools ▪ Screwdriver (for M5 screws) ▪ Nippers (for cutting the tie band) ▪ Welding tool set * Notes on tie band (cable tie with a locking device) If you accidentally cut the cable tie on tie band during replace- ment, cut off the tie all the way to the locking device, and insert a regular cable tie (5mm max.) through the locking device.
  • Page 165 [ IX Troubleshooting ] Recover the refrigerant through the check joint Check joint (low-pressure (LP) side) on the left side of the (in order from top unit next to the plate heat exchanger. to bottom) * Each refrigerant circuit is independent. ·...
  • Page 166 [ IX Troubleshooting ] <EAHV type LEV for heating> To create work space, remove the U-pipe located 2B side in front of the LEV by removing the braze from the two areas shown in the figure. * Save the U-pipe for later use. Do the same for the 1A, 1B, and 2A sides.
  • Page 167 [ IX Troubleshooting ] <EAHV type LEV for cooling> To create work space, remove the U-pipe located 2B side in front of the LEV by removing the braze from the two areas shown in the figure. * Save the U-pipe for later use. Do the same for the 1A, 1B, and 2A sides.
  • Page 168 [ IX Troubleshooting ] <EACV type LEV for cooling> Remove the U-pipe located in front of the LEV by 2B side removing the braze from the two areas shown in the figure. * Cool the LEV with a wet cloth when brazing the pipe.

  • Page 169: Draining The Water From The Water-Pipes Of The Unit And From The Water Heat Exchanger

    [ IX Troubleshooting ] [6] Draining the water from the water-pipes of the unit and from the water heat exchanger • Drain the water by unplugging the drain plug on the water pipe at the lower part of the water heat exchanger. The drain plug is at the lower part of the water heat exchanger (where circled in the figure).

  • Page 170: Attachments

    X Attachments [1] R32 saturation temperature table .................. 163 - 161 - HWE20010...
  • Page 171 - 162 - HWE20010...

  • Page 172: R32 Saturation Temperature Table

    [ X Attachments ] X Attachments [1] R32 saturation temperature table Saturation Saturating Saturation Saturating Saturation Saturating Saturation Saturating Saturation Saturating Saturation Saturating pressure temperature pressure temperature pressure temperature pressure temperature pressure temperature pressure temperature MPa (gauge) °C MPa (gauge) °C MPa (gauge) °C...
  • Page 173 [ X Attachments ] - 164 - HWE20010...
  • Page 174 Service Handbook Model EAHV-M1500YCL （-N） （ -BS） EAHV-M1800YCL （-N） （ -BS） EACV-M1500YCL （-N） （ -BS） EACV-M1800YCL （-N） （ -BS） www.MitsubishiElectric.com New publication effective Oct. 2020 Specifications subject to change without notice HWE20010...
  • Page 175 Related Links Model Number: EAHV-M1500YCL-N Commercial Heating Brochure e-Series R32 Modular Chiller Product Information Sheet EA(C)(H)V-M1500/1800-YCL-N Databook (MEES20K012) EA(C)(H)V-M1500/1800-YCL-N Databook_(MEES23K034) EA(C)(H)V-M1500/1800-YCL-N Parts Catalogue (BWE020200) EA(C)(H)V-M15001800-YCL-N Service Manual (SH_HWE20010) Installation Manual e Series R32...

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