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Mitsubishi Electric PURY-P200 Service Handbook

City multi r410a
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AIR CONDITIONERS CITY MULTI
PURY-P200, P250, P300, P350, P400YGM-A
Models
PURY-P450, P500, P550, P600, P650YGM-A
Service Handbook

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  Summary of Contents for Mitsubishi Electric PURY-P200

  • Page 1 AIR CONDITIONERS CITY MULTI PURY-P200, P250, P300, P350, P400YGM-A Models PURY-P450, P500, P550, P600, P650YGM-A Service Handbook...
  • Page 2: Table Of Contents

    [3] Interlocking Setting that is Made on the MA Remote Controller ..66 [4] Switching to the built-in Thermo on the remote controller ..67 5 Electrical Wiring Diagram ............68 [1] PURY-P200, P250, P300, P350, P400YGM-A ...... 68 [2] PURY-P450, P500, P550, P600, P650YGM-A ...... 69 [3] CMB-P104V-G ................ 70 [4] CMB-P105, 106V-G ..............
  • Page 3 8 Test Run ..................108 [1] Check Items before Test Run..........108 [2] Test Run Method ..............108 [3] Operating Characteristics and Refrigerant Amount....109 [4] Adjustment and Judgment of Refrigerant Amount ....109 [5] Refrigerant Volume Adjustment Mode Operation ....111 [6] Symptoms that do not Signify Problems ........
  • Page 4: Safety Precautions

    Safety Precautions Before installing the unit, be sure to carefully read all of the following safety precautions. These precautions provide important information regarding safety. Be sure to follow them to ensure safety. Symbols used in the text Warning: Failure to follow all instructions may result in serious personal injury or death. Caution: Failure to follow all instructions may result in personal injury or damage to the unit.
  • Page 5 Warning : Carefully read the labels affixed to the main unit. When installing the unit in a small room, safeguard Do not touch the fins on the heat exchanger with against hypoxia that results from leaked refrigerant bare hands: they are sharp and dangerous. reaching the threshold level.
  • Page 6: Before Installing The Unit

    Caution Store the piping to be used during installation Do not use a charging cylinder. indoors, and keep both ends of the piping sealed • The use of charging cylinder will change the until immediately before brazing. (Keep elbows and composition of the refrigerant and lead to power other joints wrapped in plastic.) loss.
  • Page 7 Before Installing (Relocating) the Unit or Performing Electric Work Caution Ground the unit. Use breakers and fuses (electrical current breaker, remote switch <switch + Type-B fuse>, molded • Do not connect the grounding on the unit to gas case circuit breaker) with a proper current pipes, water pipes, lightning rods, or the grounding capacity.
  • Page 8 Before the Test Run Caution Turn on the unit at least 12 hours before the test Do not turn off the power immediately after run. stopping the unit. • Keep the unit on throughout the season. • Allow for at least five minutes before turning off the Turning the unit off during the season may cause unit;...
  • Page 9: Read Before Servicing

    ¡ ¡ Read Before Servicing [1] Items to Be Checked 1. Verify the type of refrigerant used by the unit to be serviced. Refrigerant Type : R410A 2. Check the symptom exhibited by the unit to be serviced. Look in this service handbook for symptoms relating to the refrigerant cycle. 3.
  • Page 10: Necessary Tools And Materials

    [2] Necessary Tools and Materials Prepare the following tools and materials necessary for installing and servicing the unit. [Necessary tools for use with R410A (Adaptability of tools that are for use with R22 and R407C)] 1. To be used exclusively with R410A (not to be used if used with R22 or R407C) Tools/Materials Notes Gauge Manifold...
  • Page 11: Piping Materials

    [3] Piping Materials Do not use the existing piping! New Piping Existing Piping <Types of copper pipe> Type-O pipes Soft copper pipes (annealed copper pipes) They can be bent easily with hands. Type-1/2H pipes Hard copper pipes (straight pipes) Stronger than type-O pipes of the same radial thickness. •...
  • Page 12 <Indication of the radial thickness and refrigerant type on the piping materials> “Radial thickness” and “Refrigerant Types” are indicated on the insulation material on the piping materials for the new refrigerant. Indication of the radial thickness (mm) Indication of the refrigerant type Radial thickness Symbols Refrigerant type...
  • Page 13: Storage Of Piping Material

    [4] Storage of Piping Material 1. Storage location Store the pipes to be used indoors. (Warehouse at site or owner’s warehouse) Storing them outdoors may cause dirt, waste, or water to infiltrate. 2. Pipe sealing before storage Both ends of the pipes should be sealed until immediately before brazing. Wrap elbows and T’s in plastic bags for storage.
  • Page 14: Piping Machining

    [5] Piping Machining Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat flares and flange connections. Reason : 1. The refrigerator oil used for the equipment is highly hygroscopic and may introduce water inside. Notes : •...
  • Page 15: Brazing

    [6] Brazing No changes from the conventional method, but special care is required so that foreign matter (ie. oxide scale, water, dirt, etc.) does not enter the refrigerant circuit. Example : Inner state of brazed section When non-oxide brazing was not used When non-oxide brazing was used Items to be strictly observed : 1.
  • Page 16: Airtightness Test

    [7] Airtightness Test No changes from the conventional method. Note that a refrigerant leakage detector for R22 or R407C cannot detect R410A leakage. Halide torch R22 or R407C leakage detector Items to be strictly observed : 1. Pressurize the equipment with nitrogen up to the design pressure and then judge the equipment’s airtightness, taking temperature variations into account.
  • Page 17: Vacuum Drying

    Vacuum Drying Photo 1 15010H Photo 2 14010 Recommended vacuum gauge : ROBINAIR 14010 Thermistor Vacuum Gauge 1. Vacuum pump with reverse-flow check valve (Photo 1) To prevent vacuum pump oil from flowing back into the refrigerant circuit upon turning off the vacuum pump’s power source, use a vacuum pump equipped with a reverse flow check valve.
  • Page 18: Changing Refrigerant

    [10] Changing Refrigerant R410A must be in a liquid state when charging. For a cylinder with a syphon attached For a cylinder without a syphon attached Cylin- Cylin- Cylinder color identification R407C-Gray Charged with liquid refrigerant R410A-Pink Valve Valve Liquid Liquid Reasons : R410A is a pseudo-azeotropic refrigerant (boiling point R32 = -52˚C, R125 = -49˚C) and can roughly be handled...
  • Page 19: Characteristics Of The Conventional And The New Refrigerants

    [12] Characteristics of the Conventional and the New Refrigerants 1. Chemical property As with R22, the new refrigerant (R410A) is low in toxicity and a chemically stable non-flammable refrigerant. However, because the specific gravity of steam 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 20: Notes On Refrigerating Machine Oil

    [13] 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 refrigerant system. Please note that the ester oil sealed in the unit is not the same as commercially available ester oil. Refrigerant Refrigerating machine oil Mineral oil...
  • Page 21: Restrictions

    ™ ™ Restrictions [1] Electrical Work & M-NET control 1. Attention ➀ Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations, and guidance of each electric power company. ➁ Wiring for control (hereinafter referred to as transmission line) shall be (5cm or more) apart from power source wiring so that it is not influenced by electric noise from power source wiring.
  • Page 22: Types Of Switch Setting And Address Setting

    [2] Types of Switch Setting and Address Setting 1. Switch setting Type and method of switch setting Switch setting vary depending on the system configuration. Make sure to read “[3] Examples of system connection” before conducting electrical work. Turn off the power before setting the switch. Operating the switch while the unit is being powered will not change the setting, and the unit will not properly function.
  • Page 23 Setting the power supply selecting connector for the outdoor unit (Factory setting: CN41 is connected.) System Connection with Power supply unit Grouping operation The setting of the power supply Configuration the system for the of different selecting connector controller transmission lines refrigerant systems Single refrigerant system...
  • Page 24: Examples Of System Connection

    Examples of system connection 1. System using MA remote controller (1) In the case of single refrigerant system (Automatic address set-up) Control wiring example Interlocking with ventilation Group Group ✻ 1 TB02 TB15 TB15 M1M2 M1M2 M1M2 M1M2 M1M2 M1M2 A1 B2 A1 B2 A1 B2...
  • Page 25 Wiring method Address setting method • a. Indoor/outdoor transmission line Daisy-chain the M1 and M2 terminals of the indoor-outdoor transmission terminal block (TB3) on the outdoor unit (OC), M1 and M2 terminals of the indoor-outdoor transmission terminal block (TB3) on the heat exchanger unit (OS), M1 and M2 terminals of the indoor-outdoor transmission line terminal block (TB02) on the BC controller (BC), and M1 and M2 terminals of the indoor-outdoor transmission line terminal block (TB5) on each indoor unit.
  • Page 26 1. System using MA remote controller (2) In the case of single refrigerant system connecting 2 or more LOSSNAY units (Manual address set-up) Control wiring example Interlocking with ventilation Group Group ✻ 1 TB02 TB15 TB15 M1M2 M1M2 M1M2 M1M2 M1M2 M1M2 A1 B2...
  • Page 27 Wiring method Address setting method • a. Indoor/outdoor transmission line The same as 1. (1) Connection of shielded wire: The same as 1. (1) b. Centralized control transmission line No connection is required. The same as 1. (1) c. MA remote controller wiring For 2-remote controller operation: The same as 1.
  • Page 28 1. System using MA remote controller (3) In the case of different refrigerant grouping operation Control wiring example Interlocking with ventilation CN41→CN40 Replace Group Group ✻ 1 TB02 TB15 TB15 M1M2 M1M2 M1M2 M1M2 M1M2 M1M2 Connect A1 B2 A1 B2 M1M2 TB02 ✻...
  • Page 29 Wiring method Address setting method • a. Indoor/outdoor transmission line Daisy-chain the M1 and M2 terminals of the indoor-outdoor transmission terminal block (TB3) on the outdoor unit (OC), M1 and M2 terminals of the indoor-outdoor transmission terminal block (TB3) on the heat exchanger unit (OS), M1 and M2 terminals of the indoor-outdoor transmission line terminal block (TB02) on the BC controller (BC), and M1 and M2 terminals of the indoor-outdoor transmission line terminal block (TB5) on each indoor unit.
  • Page 30 1. System using MA remote controller (4) In the case of connecting system controller to centralized control transmission line Control wiring example Interlocking with ventilation CN41→CN40 Replace SW2-1 OFF→ON Note 1 Group Group ✻ 1 TB02 TB15 TB15 M1M2 M1M2 M1M2 M1M2 M1M2...
  • Page 31 Wiring method Address setting method • a. Indoor/outdoor transmission line The same as 1. (3) Connection of shielded wire: The same as 1. (1) b. Centralized control transmission line Apply jumper wiring between M1, M2 terminals of centralized control transmission line terminal blocks (TB7) on each OC.
  • Page 32 1. System using MA remote controller (5) Connecting (multiple) BC controllers in R2 systems (with the system controller connected to the transmission lines for centralized control Control wiring example Numbers in the squares indicate pipe-end connection number. Connection to the BC controller CN41→CN40 Replace SW2-1 OFF→ON Note 1...
  • Page 33 Wiring method Address setting method • a. Indoor/outdoor transmission line Connect terminals M1 and M2 of the indoor-outdoor transmission line terminal block (TB3) on the outdoor unit (OC) to the terminals M1 and M2 of the indoor-outdoor transmission terminal block (TB02) of the main BC controller (BC) and the sub BC controller (BS) and terminals M1 and M2 of the indoor-outdoor transmission terminal block (TB5) on each indoor unit (IC).
  • Page 34 1. System using MA remote controller (6) In the case of connecting system controller to indoor/outdoor transmission line (excluding LM adaptor) Control wiring example Interlocking with ventilation CN41→CN40 Replace SW2-1 OFF→ON Group Group ✻ 1 TB02 TB15 TB15 M1M2 M1M2 M1M2 M1M2 M1M2...
  • Page 35 Wiring method Address setting method • a. Indoor/outdoor transmission line Daisy-chain the M1 and M2 terminals of the indoor-outdoor transmission terminal block (TB3) on the outdoor unit (OC), M1 and M2 terminals of the indoor-outdoor transmission terminal block (TB3) on the heat exchanger unit (OS), M1 and M2 terminals of the indoor-outdoor transmission line terminal block (TB02) on the BC controller (BC), and M1 and M2 terminals of the indoor-outdoor transmission line terminal block (TB5) on each indoor unit.
  • Page 36 2. System Using the M-NET Remote Controller (1) System with the system controller connected to the transmission lines for centralized control Control wiring example Interlocking with ventilation CN41→CN40 Replace SW2-1 OFF→ON Group Group Note1 ✻ 1 TB02 TB15 TB15 M1M2 M1M2 M1M2 M1M2...
  • Page 37 Wiring method Address setting method • The same as 1. (3) a. Indoor/outdoor transmission line Connection of shielded wire: The same as 1. (1) The same as 1. (4) b. Centralized control transmission line The same as 1. (4) Connection of shielded wire: c.
  • Page 38 3. System where MA remote controller and M-NET remote controller coexist Control wiring example CN41→CN40 Replace SW2-1 OFF→ON Note1 Group Group ✻2 TB15 TB15 TB15 TB02 M1M2 M1M2 M1M2 M1M2 M1M2 M1M2 Connect A1 B2 A1 B2 M1M2 TB02 ✻2 Leave CN41 as it is.
  • Page 39 Wiring method Address setting method • a. Indoor/outdoor transmission line The same as 1. (3) Connection of shielded wire: The same as 1. (1) b. Centralized control transmission line The same as 1. (4) Connection of shielded wire: The same as 1. (4) c-1.
  • Page 40: Restrictions On Refrigerant Piping Length

    Restrictions on Refrigerant Piping Length For the piping connection, the end branching system is applied where the end of refrigerant piping from the outdoor unit is branched and connected to each indoor unit. As the piping connection method, the indoor unit is applied with flare connec- tion, outdoor unit gas piping is flange connection, and liquid piping is flare connection.
  • Page 41 1. Line-branch method [16 branches or less (the use of only the main BC controller or standard BC controller)] Outdoor unit 110 m or less BC controller 40 m or less Branch pipe (for Y-series) CMY-Y102S-G Junction Indoor unit pipe (option) Indoor unit Indoor unit...
  • Page 42 [Systems that requires more than 16 pipe-end connections or with multiple BC controllers (with a use of both main and sub controllers)] Outdoor unit <With more than 16 branching> Indoor unit Indoor unit BC controller 110 m or less (sub) Note 6 BC controller (main) 40 m or less...
  • Page 43 2. Refrigerant piping size Between outdoor unit and BC controller (Part A) Outdoor unit PURY-P200 PURY-P250 PURY-P300 PURY-P350 PURY-P400 Item YGM-A YGM-A YGM-A YGM-A YGM-A High pressure ø 15.88 ø 19.05 ø 22.2 pipe Refrigerant piping size Low pressure ø...
  • Page 44 3. Connecting the BC controllers (1) BC controller (standard model) end connection piping size [P200-P350 types] Piping sections High-pressure side Low-pressure side (liquid side) (gas side) Item ø 15.88 ø 19.05 PURY-P200YGM-A (Brazed) (Brazed) End connection: 22.2 ø brazed connection PURY-P250YGM-A Outdoor (Brazed)
  • Page 45 (2) BC controller (main) end connection piping size End connection: brazed connection To outdoor unit Main BC controller ✻2 Junction pipe kit Branch pipe (Type: CMY-Y102S-G) ✻1 (Type: CMY-R160-J) (For CITY MULTI Y series, option) Reducer (option) (supplied) Indoor unit Indoor unit Indoor unit Indoor unit...
  • Page 46 (3) BC controller (sub) end connection piping size End connection: brazed connection Main BC controller Sub BC controller ✻2 Junction pipe kit Branch pipe (Type: CMY-Y102S-G) ✻1 (Type: CMY-R160-J) (For CITY MULTI Y series, option) Reducer (option) (supplied) Indoor unit Indoor unit Indoor unit Indoor unit...
  • Page 47: Components Of The Outdoor Unit

    £ £ Components of the Outdoor Unit [1] Appearance of the Components and Refrigerant Circuit < P200, P250, P300, P350-Types > [ Front view of the unit ] Fan guard Heat exchanger [ Rear view of the unit ] Fan guard Heat exchanger - 44 -...
  • Page 48 < P200, P250, P300, P350-Types > [ Front view of the refrigerant circuit ] Pressure switch High-pressure High-pressure check joint pressure sensor Discharge muffler 4-way valve Accumulator Inverter compressor Drier Check valve block Ball valve on low-pressure side Ball valve on high-pressure side [ Rear view of the refrigerant circuit ] 4-way valve Accumulator...
  • Page 49 < P400-type > Fan guard [ Front view of the unit ] Heat exchanger [ Rear view of the unit ] Fan guard Heat exchanger - 46 -...
  • Page 50 < P400-type > [ Front view of the refrigerant circuit ] High-pressure check joint Pressure switch 4-way valve Low-pressure sensor High-pressure pressure sensor Discharge muffler Accumulator Drier Inverter compressor Ball valve on low-pressure side Ball valve on Check joint on Low-pressure sensor high-pressure side low-pressure side...
  • Page 51 < P450, P500, P550, P600, P650-Types > [ Front view of the unit ] Fan guard Heat exchanger [ Rear view of the unit ] Fan guard Heat exchanger - 48 -...
  • Page 52 < P450, P500, P550, P600, P650-Types > [ Front view of the refrigerant circuit ] Oil separator (No.1) Oil separator (No.2) Pressure switch Accumulator Inverter compressor (No.1) Oil balancer tube Commercial power supply compressor (No.2) [ Rear view of the refrigerant circuit ] High-pressure High-pressure pressure sensor...
  • Page 53: Control Box

    [2] Control Box < P200~P400-Type > [ Appearance ] Main board INV board Transmission line terminal block Choke coil for centralized control (L1, L2) (TB7) Transformer Indoor/outdoor transmission terminal block Power supply terminal (TB3) block (TB1) [ Under the circuit board cover ] ACCT-U phase ACCT-W phase DCL (back)
  • Page 54 < P450~P650-Type > Relay board (RELAY02-BOARD) Relay board [ Appearance ] (RELAY BOARD) INV board Main board Transmission line terminal block for centralized control (TB7) FILTER board Indoor/outdoor transmission terminal block Choke coil (TB3) (L1, L2) Transformer Power supply terminal block (TB1) [ Under the circuit board cover ] Gate amp board...
  • Page 55: Circuit Board

    [3] Circuit Board 1. Main board CNRS3B CNRS3A CNS1 CNS2 CN40 CN41 CN38 CNVCC1 Controlled source input CNRT1 – DC30V – DC30V CN52C – DC7V Control for – DC12V 52C1 – DC7V CN51 – Compressor ON/OFF – Trouble CN3N CN3D CN3S CNOUT1 CNAC3...
  • Page 56 2. INV board CNVDC CN15V2 Power supply for IPM control CNVCC1 Power supply – DC30V – DC30V – DC7V – DC12V CN52C – DC7V CNDR2 CNAC2 Power Source CNCT CNTH CNFAN CNRS1 CNRS2 CNCT2 Serial transmission for MAIN board - 53 -...
  • Page 57 3. FAN board CNVDC CNN Fan motor output DC bus voltage input Fuse CNRS2 – LED1 LED2 IPM (back) CNTR - 54 -...
  • Page 58 4. Relay board (RELAY BOARD) CNRT2 – 52C2, 52F, CH12 Power input (AC220~240V) CN51C2 CNOUT2 – 51C2 51C2 contact input Relay driving input Detection output CN52C2 52C2 drivingoutput – AC220~240V CN52F driving output – AC220~240V CNCH CH12 Power output – AC220~240V 5.
  • Page 59 6. Filter board CNOUT CNIN Controlled Controlled CNFG source output CNL1 CNL2 source input 7. G/A board CNDC1 CNDC2 CN15V1 CNIPM1 CNDR1 - 56 -...
  • Page 60: Bc Controller (Inside The Panel)

    [4] BC controller (inside the panel) < CMB-P V-G(A) > [ Front (CMB-P1016V-G(A) is shown in the picture) ] Gas pipe (indoor unit side) Liquid pipe (indoor unit side) TH11 LEV1 LEV2 TH16 TH12 SVM2 SVM1 LEV2 TH15 TH11 LEV3 SVM1 LEV1 LEV3...
  • Page 61 [ Rear view (CMB-P1016V-G(A) is shown in the picture) ] < CMB-P1016V-G > Gas-liquid separator Double pipe heat exchanger < CMB-P1016V-GA > Double pipe heat exchanger Gas-liquid separator - 58 -...
  • Page 62 < CMB-P V-GB> [ Front view (CMB-P104V-GB is shown in the picture) ] [ Rear view (CMB-P104V-GB is shown in the picture) ] TH22 LEV3a TH25 - 59 -...
  • Page 63: Bc Control Box

    [5] BC control box [ BC controller control box (CMB-P1016V-GA is shown in the picture) ] Relay board Transformer Terminal block for power supply Terminal block for transmission BC controller board [6] BC controller board [ BC controller board ] - 60 -...
  • Page 64 [ Relay board (RELAY 4 board) ] [ Relay board (RELAY 10 board) ] - 61 -...
  • Page 65: Remote Controller

    ¢ ¢ Remote Controller [1] Functions and Specifications of MA and ME Remote Controllers There are two types of remote controllers: M-NET (ME) remote controller, which is connected on the indoor/outdoor transmission line, and MA remote controller, which is connected to each indoor unit.
  • Page 66: Group Setting And Interlocking Settings That Are Made On An Me Remote Controller

    [2] Group Setting and Interlocking Settings that are Made on an ME Remote Controller 1. Group setting/interlocking setting This operation should be performed to set a group of indoor units between different refrigerant systems and to manually raise the indoor/outdoor unit addresses.
  • Page 67 Repeat steps 7 and 8 above to interlock all the indoor units in a group with the LOSSNAY. (C) Returning to the normal state When all the group registration and interlock registration operations To return to the normal state, To confirm the addresses, go are completed, return to the normal state as described below.
  • Page 68 (A) Deleting group registration information (B) When deleting interlocked registration <When completed normally> When deletion was completed normally, “ ” is displayed at the unit type display. If a deletion error occurred, (Alternate display) “ ” is displayed at the room temperature display. “...
  • Page 69: Interlocking Setting That Is Made On The Ma Remote Controller

    [PROCEDURE] 1. Set the air conditioner to the off state with the remote controller [ON/OFF] button. The remote controller display shifts to the OFF window display shown at the left. 2. When the [CHECK] and [Mode selection] buttons 1 are pressed and held down at the same time for two seconds, the remote controller switches to the remote controller function selection mode and the “OPERATION MODE DISPLAY SELECTION MODE”...
  • Page 70: Switching To The Built-In Thermo On The Remote Controller

    3 Registration confirmation result - The indoor unit address and registered LOSSNAY address are displayed alternately. FUNCTION FUNCTION <Indoor unit address and indoor unit display> <LOSSNAY address display and LOSSNAY display> - When LOSSNAY are not registered FUNCTION 4 If registration is unnecessary, end registration by pressing and holding down the B [FILTER] and c [Louver] buttons at the same time for two seconds.
  • Page 71: Electrical Wiring Diagram

    ∞ ∞ Electrical Wiring Diagram [1] PURY-P200, P250, P300, P350, P400YGM-A - 68 -...
  • Page 72: Pury-P450, P500, P550, P600, P650Ygm-A

    [2] PURY-P450, P500, P550, P600, P650YGM-A - 69 -...
  • Page 73: Cmb-P104V-G

    [3] CMB-P104V-G - 70 -...
  • Page 74: Cmb-P105, 106V-G

    [4] CMB-P105, 106V-G - 71 -...
  • Page 75: Cmb-P108, 1010V-G

    [5] CMB-P108, 1010V-G - 72 -...
  • Page 76: Cmb-P1013, 1016V-G

    [6] CMB-P1013, 1016V-G - 73 -...
  • Page 77: Cmb-P104V-Gb

    [7] CMB-P104V-GB - 74 -...
  • Page 78: Cmb-P108V-Gb

    [8] CMB-P108V-GB - 75 -...
  • Page 79: Cmb-P108, 1010V-Ga

    [9] CMB-P108, 1010V-GA - 76 -...
  • Page 80: Cmb-P1013, 1016V-Ga

    [10] CMB-P1013, 1016V-GA - 77 -...
  • Page 81: Refrigerant Circuit

    § § Refrigerant Circuit [1] Refrigerant Circuit Diagram < PURY-P200, P250, P300, P350, P400YGM-A > - 78 -...
  • Page 82 < PURY-P450, P550, P600, P650YGM-A > - 79 -...
  • Page 83 < CMB-P104,105,106,108,1010,1013,1016V-G > Solenoid valves Block TH15 LEV3 TH12 HIC-B PS1 PS3 TH11 LEV1 TH16 Gas/Liquid Check valves Block Separator SVM1 < CMB-P104,108V-GB > Solenoid valves Block TH25 TH22 LEV3a Check valves Block - 80 -...
  • Page 84 < CMB-P108,1010,1013,1016V-GA > Solenoid valves Block Gas pipe (low pressure side) Gas pipe (high pressure side) TH15 LEV3 SVM2 TH12 Liquid pipe PS1 PS3 TH11 LEV1 TH16 LEV2 Gas/Liquid Check valves Block Separator SVM1 - 81 -...
  • Page 85: Functions Of Principal Parts

    Functions of Principal Parts 1. Outdoor Unit Symbol Name Notes Function Specification Check method (function) Compres- Adjusts the volume of circulating re- (P200-type) frigerant by controlling the operating High-pressure shell scroll type frequency with the operating pres- Winding resistance sure. 20˚C : 0.72Ω...
  • Page 86 Symbol Name Notes Function Specification Check method (function) 1 High/low pressure bypass at Solenoid AC220~240V Continuity check valve Discharge- starting and stopping, and capacity Open when energized with a tester suction bypass control during low-load operation Closed when not energized 2 High-pressure rise suppression Low-pressure down suppression Discharge-...
  • Page 87: Bc Controller

    BC controller 1. G type Symbol Name Notes Function Specification Check method (function) Pressure 63HS1 1 Detects liquid-side (high pressure) Pressure 63HS sensor (Liquid side) pressure 0~4.15MPa Vout 0.5~3.5V 2 LEV control 1 2 3 0.071V/0.098MPa Connector Pressure [MPa] =1.38✕Vout[V]-0.69 (Black) Vout (White)
  • Page 88 2. GA type Symbol Name Notes Function Specification Check method (function) 1 Detects liquid-side (high pressure) Pressure 63HS1 Pressure 63HS sensor (Liquid side) pressure 0~4.15MPa 2 LEV control Vout 0.5~3.5V 1 2 3 0.071V/0.098MPa Connector Pressure [MPa] =1.38✕Vout[V]-0.69 (Black) Vout (White) 63HS3 1 Detects mid-point pressure...
  • Page 89: Control

    ¶ ¶ Control [1] Dip Switch Functions and Their Factory Settings 1. Outdoor unit (1) Main board Function according to switch setting Switch setting timing Switch Function Unit address setting Set to 00 or 51-100 with the dial switch Before power on SW1 1~10 For self-diagnosis/operation Refer to the LED monitor display on the outdoor unit board Anytime after power on...
  • Page 90 DipSW5-1 DipSW3-9 Standard specification Standard specification High-static pressure High-static pressure (60Pa) specification (30Pa) specification (2) INV board Function according to switch setting Switch setting timing Switch Function Enabling/disabling the following error Error detection enabled Error detection disabled Anytime after power on detection functions: ACCT, DCCT sensor circuit error (530X Detail No.
  • Page 91: Indoor Unit

    2. Indoor unit DIP SW1, 3 Function according to switch operation Switch set timing Switch Function Remarks Room temp. sensor position Indoor unit inlet Built in remote controller Clogged filter detect. None Provided Filter duration 100h 2500h Always ineffective for PKFY-P.VAM OA intake Ineffective Effective...
  • Page 92 Setting of DIP SW5 220V 240V ON : 220V 230V OFF : 240V (PLFY-P·VLMD-E) Switch Function Operation by switch Switch set timing (PCFY-P-VGM-E) Ceiling height Ceiling height Always after powering 3.5m setting 2.8m 2.3m (PDFY-P20 ~ 80VM-E, PEFY-P20 ~ 80VMM-E) 100Pa 50Pa External static...
  • Page 93 3. BC controller (main board) Function according to the switch setting Switch Function Switch setting timing R410A – Model type setting Always leave it to OFF – – – – – – – – Model type setting Refer to the “Model type setting” below Before powering Model type setting Refer to the “Model type setting”...
  • Page 94: Controlling The Outdoor Unit

    (2) ME remote controller (PAR-F27MEA) Set the address of the remote controller with the rotary switch. Rotary switch 10 digits 1 digit (left) (right) Remote controller unit Example: In case of address 108 Address setting range Setting method Main remote controller 101 ~ 150 Set to the lowest indoor main unit address + 100.
  • Page 95 3. Bypass control Bypass solenoid valves (P200-P400: SV1, SV2, P450-P650: SV1, SV2, SV3), which bypass the high- and low- pressure sides, operate in the following manner. (1) Bypass solenoid valve (SV1) (ON = Open) Operation Timing ON (Open) OFF (Close) At No.
  • Page 96 4. Frequency control • Depending on the capacity required, the frequency of the compressor is controlled to keep constant the evap- oration temperature (0˚C = 0.71MPa) during cooling operation and condensing temperature (49˚C = 2.88MPa) during heating operation. • The capacity of the P200-P400 is controlled solely by the inverter-driven compressor, and the capacity of P450-P650 is controlled by No.1 and No.2 compressors.
  • Page 97 5. Defrost operation control (1) Starting the defrost operation • Defrost operation is started when the pipe temperature (TH5) of -10˚C or below (-8˚C or below for P400- type and above) has continuously been detected for 3 minutes after the integrated compressor operation time of 50 minutes have passed.
  • Page 98 6. Refrigerant recovery control Refrigerant is recovered at each pipe-end connection of the BC controller to prevent the refrigerant from accu- mulating in the indoor units in heating operation, stopping mode (fan mode), cooling mode and heating mode with thermo off. Refrigerant recovery is also performed during cooling operation to prevent an excessive accumulation of refriger- ant in the outdoor heat exchanger (P200-P400 types only).
  • Page 99 (3) Patterns of outdoor unit heat exchanger capacity control [P200-P400types] [P450-P650types] Solenoid valve Solenoid valve Operation Operation Operation Operation mode pattern mode pattern SV4a SV4b SV4c SV4d SV4a SV4b SV4c SV4d SV5a SV5b Cooling Cooling only only Cooling Cooling main main Heating only Heating only...
  • Page 100 < Initial start-up control of P450-P650 type units: Time chart > [Example1] Completion of initial start up operation 40 minutes 5 minutes No.1 compressor ON/OFF No.2 compressor ON/OFF Step 1 Step 3 <Restrictions under heating initial start-up mode> When the compressor discharge (SH) is low, or the discharge pressure is low under heating-only, heating-main, and cooling-main modes, the capacity total of indoor units which can be operated will be restricted.
  • Page 101 10. Cooling/heating circuit control and an overview of the functions of system equipment Operation 2 phase Simplified diagram of refrigerant circuit Refrigerant cycle-simplified diagram status Liquid Reverse-flow 4-way valve check valve Switch valve Low- Pressure pressure Low-pressure 2 phase pipe Low-pressure Liquid Cooling...
  • Page 102 11. Operation mode (1) Indoor unit operation modes An operation mode can be selected from the following 5 modes on the remote controller. Cooling mode Heating mode Dry mode Fan mode Stopping mode (2) Outdoor unit operation modes Five operation modes of the outdoor units Cooling only All indoor units in are in cooling mode.
  • Page 103 12. BC controller control (CMB-P G, CMB-P GA, CMB-P (1) SV A, SV B, SV C control A, SV B, SV C comes on and off depending on the mode at the pipe end connection. Mode Pipe Cooling Heating Stop Defrost end connection (2) SVM1 control...
  • Page 104 13. Demand control Cooling/heating operation can be prohibited (thermo OFF) by an external input to the indoor units. Note : When DIPSW4-7 are on, STEP DEMAND are possible. NIGHT MODE will become unavailable however. SW4-7 : OFF (Compressor ON/OFF and NIGHT MODE) CN3D 1-3P CN3D 1-2P Compressor ON/OFF...
  • Page 105: Operation Flow Chart

    [3] Operation Flow Chart 1. Flow to determine the mode (1) Indoor unit (cooling, heating, dry, fan mode) Normal operation Trouble observed Start Stop Breaker turned on From outdoor uni t Operation SW turned on 1. Protection function self-holding Note: ❉1 cancelled.
  • Page 106 (2) Outdoor unit (Cooling only, heating only, cooling main, heating main operations) Normal operation Start Trouble observed Stop Breaker turned on Note: ❉1 “HO” blinks on the remote controller Set indoor address No. to remote controller From outdoor unit Operation command 1.
  • Page 107 (3) BC controller (Cooling only, heating only, cooling main, heating main operations) Normal operation Start Trouble observed Stop Breaker turned on Operatio command 1. Judgment of operation mode Cancellation of the self- (Cooling only, heating only, combination of cooling/heating) holding of protection function 2.
  • Page 108 2. Operation under each mode (1) Cooling operation Normal operation Cooling operation Trouble observed Stop 4-way valve OFF Indoor unit fan Note: ❉1 operations Test run start Thermostat 3-minute restart preven- tion 1. Inverter output 0Hz 1. Inverter frequency control 2.
  • Page 109 (2) Heating operation Normal operation Trouble observed Stop Test run Heating operation Note: ❉1, 2 Defrost operation 4-way valve OFF 4-way valve OFF 1. Indoor unit fan stop 2. Inverter defrost frequency Test run start control 3. Indoor unit LEV fully closed 4.
  • Page 110 (3) Dry operation Normal operation Dry operations Trouble observed Stop 4-way valve OFF Test run start Note: ❉2 Thermostat ON Inlet temp. ≥ 18°C Note: ❉1 1. Outdoor unit (Compressor) 1. Indoor unit fan stop intermittent operations 2. Inverter output 0Hz 2.
  • Page 111: Test Run

    • • Test Run [1] Check Items before Test Run Check refrigerant leak, loose power source or transmission line if found. Measure resistance between the power source terminal block and ground with a 500V megger to confirm it is exceeding 1.0MΩ. Notes: 1.
  • Page 112: Operating Characteristics And Refrigerant Amount

    [3] Operating Characteristics and Refrigerant Amount Clarify relationship between the refrigerant amount and operating characteristics of CITY MULTI new refrigerant series, and perform service activities such as decision and adjustment of refrigerant amount on the market. 1. Operating characteristics and refrigerant amount The followings are operating characteristics and refrigerant amount which draw special attention.
  • Page 113 3. Amount of additional refrigerant to be charged The unit is charged with the amount of refrigerant listed in the table below at factory shipment. The refrigerant necessary for extension pipes (on-site piping) is not included and it must be added on site. Outdoor unit model name P200 P250...
  • Page 114: Refrigerant Volume Adjustment Mode Operation

    [5] Refrigerant Volume Adjustment Mode Operation Since the refrigerant volume adjustment introduced in this chapter is just for emergency need, correct adjustment to meet the rated refrigerant volume is difficult. Please judge for adequate volume by following the flow chart later under normal operation mode.
  • Page 115 [ Refrigerant Adjustment Method ] Start SW2-4 ON ❉ Refer to the previous page for Notes 1 All indoor units are run in through 4. test cooling mode Has the initial start-up mode been completed? Minimum of 30 minutes continuous operation Add a small amount of refriger- Is TH11...
  • Page 116: Symptoms That Do Not Signify Problems

    [6] Symptoms that do not Signify Problems Symptom Remote controller display Cause Indoor unit does not run while oper- "COOL (HEAT)" Unable to execute cooling (heating) operation while ating for cooling (heating). blinking display other indoor unit is under cooling (heating) operation. Auto-vane runs freely.
  • Page 117: Standard Operation Data (Reference Data)

    [7] Standard Operation Data (Reference Data) 1. Cooling operation [Standard type] Outdoor unit PURY-P200 PURY-P250 PURY-P300 BC contoroller Items CMB-P104G CMB-P104G CMB-P104G Indoor 27.0/19.0 27.0/19.0 27.0/19.0 Ambient temp. DB/WB Outdoor 35.0/24.0 35.0/24.0 35.0/24.0 Quantity Indoor unit Quantity in operation Model –...
  • Page 118 Outdoor unit PURY-P350 PURY-P400 PURY-P450 BC contoroller Items CMB-P104G CMB-P108GA CMB-P108GA Indoor 27.0/19.0 27.0/19.0 27.0/19.0 Ambient temp. DB/WB Outdoor 35.0/24.0 35.0/24.0 35.0/24.0 Quantity Indoor unit Quantity in operation Model – 140 125 200 100 250 100 Condition Main pipe Piping Branch pipe Total piping length Indoor unit fan notch...
  • Page 119 Outdoor unit PURY-P500 PURY-P550 BC contoroller Items CMB-P108GA CMB-P108GA Indoor 27.0/19.0 27.0/19.0 Ambient temp. DB/WB Outdoor 35.0/24.0 35.0/24.0 Quantity Indoor unit Quantity in operation Model – Condition Main pipe Piping Branch pipe Total piping length Indoor unit fan notch – Refrigerant volume 28.2 29.2...
  • Page 120 Outdoor unit PURY-P600 PURY-P650 BC contoroller Items CMB-P108GA CMB-P108GA Indoor 27.0/19.0 27.0/19.0 Ambient temp. DB/WB Outdoor 35.0/24.0 35.0/24.0 Quantity Indoor unit Quantity in operation Model – Condition Main pipe Piping Branch pipe Total piping length Indoor unit fan notch – Refrigerant volume 29.1 30.1...
  • Page 121 2. Heating operation [Standard type] Outdoor unit PURY-P200 PURY-P250 PURY-P300 BC contoroller Items CMB-P104G CMB-P104G CMB-P104G Indoor 20.0/- 20.0/- 20.0/- Ambient temp. DB/WB Outdoor 7.0/6.0 7.0/6.0 7.0/6.0 Quantity Indoor unit Quantity in operation Model – Condition Main pipe Piping Branch pipe...
  • Page 122 Outdoor unit PURY-P350 PURY-P400 PURY-P450 BC contoroller Items CMB-P104G CMB-P108GA CMB-P108GA Indoor 20.0/- 20.0/- 20.0/- Ambient temp. DB/WB Outdoor 7.0/6.0 7.0/6.0 7.0/6.0 Quantity Indoor unit Quantity in operation Model – 140 125 200 100 250 100 Condition Main pipe Piping Branch pipe Total piping length Indoor unit fan notch...
  • Page 123 Outdoor unit PURY-P500 PURY-P550 BC contoroller Items CMB-P108GA CMB-P108GA Indoor 20.0/- 20.0/- Ambient temp. DB/WB Outdoor 7.0/6.0 7.0/6.0 Quantity Indoor unit Quantity in operation Model – Condition Main pipe Piping Branch pipe Total piping length Indoor unit fan notch – Refrigerant volume 28.2 29.2...
  • Page 124 Outdoor unit PURY-P600 PURY-P650 BC contoroller Items CMB-P108GA CMB-P108GA Indoor 20.0/- 20.0/- Ambient temp. DB/WB Outdoor 7.0/6.0 7.0/6.0 Quantity Indoor unit Quantity in operation Model – Condition Main pipe Piping Branch pipe Total piping length Indoor unit fan notch – Refrigerant volume 29.1 30.1...
  • Page 125: Troubleshooting

    ª ª Troubleshooting [1] Check Code List 1. Check Code List Check code Check content [01] 0403 Serial transmission abnormality (Note1) [05] 0900 Test run (LC) 1102 Discharge temperature abnormality 1301 Low pressure abnormality (OC) 1302 High pressure abnormality (OC) 1500 Overcharged refrigerant abnormality 2500...
  • Page 126 Check code Check content [01] Thermal sensor 5110 Heat sink (THHS) (Note1) [05] abnormality 5111 BC controller liquid inlet (TH11) Thermal sensor 5112 Bypass outlet (TH12) abnormality 5115 Bypass inlet (TH15) (BC controller) 5116 Intermediate (TH16) 5201 High pressure sensor abnormality (Outdoor unit HPS / BC controller 63HS) 5203 BC controller intermediate-pressure sensor (63HS3) 5301...
  • Page 127 2. Intermittent fault check code (only for outdoor unit) Preliminary error code Preliminary error content 1202 (1102) Preliminary discharge temperature abnormality or preliminary discharge thermal sensor abnormality (TH11) 1205 (5105) Preliminary pipe temperature sensor abnormality (TH5) 1214 (5110) [00] Preliminary THHS sensor/circuit abnormality [05] (Note1) 1216 (5107)
  • Page 128: Responding To Error Display On The Remote Controller

    [2] Responding to Error Display on the Remote Controller 1. Mechanical problems Checking code Meaning, detecting method Cause Checking method & Countermeasure 0403 Serial Serial transmission failure (1) Defective wiring. Check for wiring between the transmission between the main board and the main board connector CNRS3B abnormality INV board, and between the...
  • Page 129 Checking code Meaning, detecting method Cause Checking method & Countermeasure 1102 Discharge (12) Gas leak between low and Check operation status of temperature high pressures. cooling-only or heating-only. abnormality 4-way valve trouble, compressor (Outdoor unit) trouble, solenoid valve SV1 trouble. (13) Thermistor trouble Check resistance of thermistor.
  • Page 130 Checking code Meaning, detecting method Cause Checking method & Countermeasure 1302 High pressure (16) Outdoor unit fan block, Check outdoor unit fan abnoramlity 1 motor trouble, poor See Trouble check of outdoor (Outdoor unit) operations of fan controller. unit fan. (8)~(16) : Rise in high pressure caused by lowered condensing capacity in cooling-only and...
  • Page 131 Checking code Meaning, detecting method Cause Checking method & Countermeasure 2502 Drain pump When drain sensor detects (1) Drain pump malfunction (1) Check the drain pump abnormality flooding during drain pump ON. malfunction 1Check whether there is (This error (2) Clogged drain pump intake occurs only water in the drain pan.
  • Page 132 Checking code Meaning, detecting method Cause Checking method & Countermeasure 2502 Drain pump When drain sensor detects (1) Drain pump malfunction Refer to the previous page. abnormality flooding during drain pump ON (This error in the stopped indoor unit. (2) Clogged drain pump intake <Error release method>...
  • Page 133 Checking code Meaning, detecting method Cause Checking method & Countermeasure 4103 Reverse 1. The operation cannot be (1) Faulty wiring · Check whether the phase of phase started because of the the power supply terminal abnormality reserve phase of one of the block (TB1) is normal.
  • Page 134 Checking code Meaning, detecting method Cause Checking method & Countermeasure 4115 Power supply The frequency cannot be (1) There is an open phase in Check before the breaker, after sync signal determined when the power is the power supply. the breaker or at the power abnormality switched on.
  • Page 135 Checking code Meaning, detecting method Cause Checking method & Countermeasure 4220 Bus voltage If Vdc 289V is detected during (2) Voltage drop detected. <In the case of 4225> 4225 drop operation. (Software detection) Check the followings 1Check the voltage of CN52C abnormality (Error details on the main board...
  • Page 136 Checking code Meaning, detecting method Cause Checking method & Countermeasure 4240 Overload When the output current (lac) (1) Air passage short cycle. Ensure that a short cycle has not 4245 abnormality > Imax (Arms) or THHS > 90˚C occurred at the unit fan exhaust. is detected for 10 minutes in a row during the inverter operation.
  • Page 137 Checking code Meaning, detecting method Cause Checking method & Countermeasure 4250 Refer to 9.[4].7.(2).[2] Load short Shorting at the load <In the case of 4250> 4255 abnormality (compressor) side detected just (1) Shorting of compressor (Error details before starting the inverter. (2) Output wiring 105) (3) Power supply...
  • Page 138 Checking code Meaning, detecting method Cause Checking method & Countermeasure 5101 Discharge 1. Shorting (high temperature in- (1) Thermistor failure Thermistor resistance check (TH11) take) or open (low temperature Check for lead wire. (TH12) intake) of the thermistor is de- (2) Pinched lead wire tected.
  • Page 139 Checking code Meaning, detecting method Cause Checking method & Countermeasure High pressure See Troubleshooting of 5201 1. When pressue sensor detects (1) Pressure sensor trouble. pressure sensor. sensor 0.098MPa or less during abnormality operation, outdoor unit once (outdoor unit) stops with 3 minutes (2) Inner pressure drop due to restarting mode, and restarts a leakage.
  • Page 140 Checking code Meaning, detecting method Cause Checking method & Countermeasure DCCT An abnormal value was (1) Contact is faulty. Check the contacts around the 5301 sensor/circuit detected with the DCCT INV board connector CNCT and 5305 abnormality detection circuit just before the DCCT side connector.
  • Page 141 Checking Meaning, detecting method Cause Checking method & Countermeasure code Transmission processor hardware 6602 (1) At the collision of mutual transmission data generated during the wiring abnormality work or polarity change of the transmission line of indoor or outdoor unit while turning the power source on, the wave shape is changed and Though transmission processor the error is detected.
  • Page 142 Checking Meaning, detecting method Cause Checking method & Countermeasure code Communications with transmission Turn off power sources of indoor unit, 6606 (1) Data is not properly processor abnormality and outdoor unit. transmitted due to casual erroneous operation of the When power sources are turned Communication trouble between generating controller.
  • Page 143 Checking Meaning, detecting method code 6607 No ACK abnormality When no ACK signal is detected in 6 continuous times with 30 seconds (continued) interval by transmission side controller, the transmission side detects error. Note : The address/attribute shown on remote controller indicates the controller not providing the answer (ACK).
  • Page 144 Checking Meaning, detecting method code No ACK abnormality 6607 When no ACK signal is detected in 6 continuous times with 30 seconds (continued) interval by transmission side controller, the transmission side detects error. Note : The address/attribute shown on remote controller indicates the controller not providing the answer (ACK).
  • Page 145 Checking Meaning, detecting method code No ACK abnormality 6607 When no ACK signal is detected in 6 continuous times with 30 seconds (continued) interval by transmission side controller, the transmission side detects error. Note : The address/attribute shown on remote controller indicates the controller not providing the answer (ACK).
  • Page 146 Checking Meaning, detecting method code No ACK abnormality 6607 When no ACK signal is detected in 6 continuous times with 30 seconds (continued) interval by transmission side controller, the transmission side detects error. Note : The address/attribute shown on remote controller indicates the controller not providing the answer (ACK).
  • Page 147 Checking Meaning, detecting method code No ACK abnormality 6607 When no ACK signal is detected in 6 continuous times with 30 seconds (continued) interval by transmission side controller, the transmission side detects error. Note : The address/attribute shown on remote controller indicates the controller not providing the answer (ACK).
  • Page 148 Checking code Meaning, detecting method Factor Checking method & Remedy (1) Check the transmission lines 6831 1. Communication between the (1) The remote control line of Communication MA remote controller and the the MA remote controller or of the indoor unit and MA no reception indoor unit is not done the indoor unit has a poor...
  • Page 149 3. System error Checking Meaning, detecting method Cause Checking method & Countermeasure code Total capacity abnormality (a) Check for the model total (capacity 7100 (1) Total capacity of indoor units cord total) of indoor units connected. in the same refrigerant Total capacity of indoor units in the system exceeds the (b) Check whether indoor unit capacity...
  • Page 150 Checking Meaning, detecting method Cause Checking method & Countermeasure code (1) Total type number of the in- 7107 Branch port setting error Before resetting the branch port set- door unit per each branch ting switch or the type (capacity code) port or per each merge port Branch port No.
  • Page 151 Checking Meaning, detecting method Cause Checking method & Countermeasure code Check transmission booster and power 7110 Connection number setting (1) Transmission booster is abnormality faulty. supply. (2) Power supply of transmission booster has been cut. 7111 Remote control sensor abnormality (a) Replace the remote controller with (1) The remote controller without the one with built-in temperature...
  • Page 152 4. Trouble shooting according to the remote controller malfunction and the external input error (1) In the case of MA remote controller Phenomena Factors Checke method & Handling Even if the operation SW on (1) The power for the indoor unit is not (a) Check voltage of the MA remote controller terminal (among 1 to 3).
  • Page 153 Phenomena Factors Checke method & Handling When turning on the remote (1) The power for the M-NET When the factor (2) and (3) controller operation SW, a transmission line is not supplied apply, self-diagnosis LED works temporary operation display is from the outdoor unit.
  • Page 154 Phenomena Factors “HO” display on the remote (1) The power for the M-NET transmission line is not controller does not turn off, supplied from the outdoor unit. When the factor and the switch does not work. (2) Short circuit of the transmission line. (2) and (3) apply, self-diagnosis (3) Incorrect wiring of the M-NET transmission line on...
  • Page 155 <Flow chart> Even if the operation SW on the remote controller is pressed, the indoor and the outdoor units do not start running. - 152 -...
  • Page 156 (2) In the case of the M-NET remote controller Phenomena Factors Checke method & Handling Even if the operation SW on (a) Check voltage of the M-NET remote (1) The power for the M-NET controller transmission terminal. the remote controller is transmission line is not supplied i) If the voltage is 17V-30V pressed, the display remains...
  • Page 157 Phenomena Factors “HO” display on remote (Without using MELANS) controller does not disappear (1) Outdoor unit address is set to “00” and ON/OFF switch is (2) Erroneous address. 1 Address setting of indoor unit to be coupled with remote controller incorrect. ineffective.
  • Page 158 Phenomena Factors Checke method & Handling (a) Confirm the address of unit to be “88” appears on remote (Generates at registration and coupled. controller at registration and confirmation) (b) Check the connection of access remote controller. (1) Erroneous address of unit to be transmission line.
  • Page 159 (3) Both for MA remote controller and M-NET remote controller Phenomena Factors Checke method & Handling (a) Observe difference between sensor Cooling with normal remote (1) Insufficient frequency rise 1 Faulty detection of pressure controller display but not detected pressure and actual providing capacity.
  • Page 160 Phenomena Factors Checke method & Handling Cooling with normal remote (7) Clogging by foreign matter Check temperature difference between controller display but not before and after a portion (strainer, providing capacity. distributor) of low pressure piping where foreign matter may likely be clogged.
  • Page 161 Phenomena Factors Checke method & Handling Heating with normal remote (3) When abnormal temperature of Check piping thermistor. controller display but not indoor unit piping temperature providing capacity. sensor is taken higher, LEV is throttled excessively due to apparent small sub-cooling. (4) Abnormal speed of outdoor unit fan Refer to the page of outdoor unit fan.
  • Page 162: Investigation Of Transmission Wave Shape/Noise

    [3] Investigation of Transmission Wave Shape/Noise 1. M-NET transmission Control is performed by exchanging signals between outdoor unit, indoor unit and remote controller by M-NET transmission. If noise should enter into the transmission line, the normal transmission will be hindered causing erroneous operation.
  • Page 163 (3) Checking and measures to be taken (a) Measures against noise Check the items below when noise can be confirmed on wave shape or the error code in the item (1) is generated. Items to be checked Measures to be taken (1) Wiring of transmission and power lines in cross- Isolate transmission line from power line (5cm or more).
  • Page 164 2. MA remote control transmission The MA remote control and indoor unit communicate with the current tone burst method. (1) Symptoms caused by infiltration of noise on transmission cable If noise, etc., infiltrates the transmission cable and the communication between the MA remote control and indoor unit is cut off for three consecutive minutes, a MA communication error (6831) will occur.
  • Page 165: Troubleshooting Of Principal Parts

    [4] Troubleshooting of Principal Parts 1. Pressure sensor (1) Check for failure by comparing the sensing pressure according to the high pressure/low pressure pressure sensor and the pressure gauge pressure. Set SW1 as shown below to display the high and low pressure sensor data displayed digitally by the light emitting diode LD1.
  • Page 166 2. Low-pressure pressure sensor (63LS) Conduct the check comparing the pressure that is detected by the low-pressure pressure sensor and the low-pressure gauge pressure. The pressure that is detected by the low-pressure pressure sensor will be displayed on the LED screen, LD1 when setting the digital shift switch (SW1) as shown below.
  • Page 167 3. Solenoid valve Check if the control board’s output signals and the operation of the solenoid valves match. Setting the self-diagnosis switch (SW1) as shown in the figure below causes the ON signal of each relay to be output to the LED’s. Each LED shows whether the relays for the following parts are ON or OFF.
  • Page 168 (4) In the case of SV4a~4d [P200/P400 type] or SV4a~4d, 5a, 5b [P450-P650 type] (Heat exchanger capacity control) In the case of cooling-only, one or more valves among SV4a~4c, 5a, 5b turn(s) on depending on the condition. Check the operation by LED display and operation sound of the solenoid valve. In the case of heating-only, all of SV4a~4c, 5a, 5b turn on.
  • Page 169 Solenoid valve block 1 Refrigerant circuit figure (P450-P650types) Solenoid valve block 2 SV5a CV7b SV5b Solenoid valve block 1 SV4d HEXb2 HEXf4 SV4b SV4a SV4c Solenoid valve block 2 HEXb1 HEXf3 ST19 ST18 HEXf2 CV7a HEXf1 CV4b CV5b CV2b Drier ST15 ST16 ST14...
  • Page 170 (6) Check valve block , 7, 8, and 9. Check the LED monitor. Valve plug A, By turning on or off SV3-6, the refrigerant flows through B and C can be removed with 3 kinds of hex wrenches. Hex wrench size is shown below. Refrigerant circuit figure (P200-P400types) Refrigerant flow in the case Refrigerant flow in the case...
  • Page 171 Refrigerant circuit figure (P450-P650types) Hex wrench Check valve block 1 Check valve block 2 SV5a CV7b SV5b Solenoid valve block 1 SV4d Gasket SV4b HEXb2 HEXf4 SV4a SV4c Gasket HEXb1 HEXf3 ST19 ST18 HEXf2 Valve plug CV7a HEXf1 CV5b CV4b CV2b Drier ST15...
  • Page 172 5. Troubleshooting method of main parts of BC controller (1) Pressure sensor Troubleshooting flow chart for pressure sensor Start Note1 Check whether the pressure sensor or the con- nectors of P1 and P3 are not disconnected, not loose, or not connected wrongly. Fix the fault.
  • Page 173 Note1 BC controller: Phenomena when the pressure sensor is connected wrongly (reverse connection of P1 and P3) to the board. Phenomena Cooling-only Cooling-main Heating-only Heating-main Normal Non-cooling SC11 large Heating indoor SC11 large Non-cooling SC11 large SC16 small SC small SC16 small Heating indoor SC16 small...
  • Page 174 Note1 For the connectors on the board, TH11~TH12 is CN10, and TH15 and TH16 is CN11. Disconnect the applied connector, and check every number of the sensor. Note2 and 3 (1) Pull out the sensor connector from the I/O board ······· Do not pull the sensor with holding the lead wire. (2) Measure the resistance with such as a tester.
  • Page 175 (3) Troubleshooting flow chart for LEV · Solenoid valve 1LEV No cooling capacity No heating capacity Note1 Check whether the electric expansion valve and the solenoid valve connector are not disconnected or not loose. Fault is found Fix the fault. Run the cooling operation or the heating operation in the applied system (only one system).
  • Page 176 Note1 BC controller: Phenomena when LEV is connected wrongly (reverse connection of LEV1 and LEV3) to the board. Phenomena Cooling-only Cooling-main Heating-only Heating-main Non-cooling Non-cooling, non-heating Indoor heating SC small Non-cooling SH12 small, SC11 small SH12 small, SC11 small PHM large Indoor heating SC small SH16 small, branch pipe SH16 large, but branch pipe...
  • Page 177 <Self-diagnosis monitor> Measurement data Symbol SW1 setting value 2 3 4 5 6 7 8 9 10 – LEV1 opening 2 3 4 5 6 7 8 9 10 – LEV3 opening 2 3 4 5 6 7 8 9 10 G,GA BC controller bypass outlet SH12...
  • Page 178 <Troubleshooting flow chart for solenoid valve body> Start Check that the connector and the terminal are not disconnected, and check the color of the lead wire visually. Intermediate connector Control board Brown Brown Blue Blue When LEV is fully closed: tick sound Orange Orange When LEV is fully open : no sound...
  • Page 179 2Solenoid valve (SVA, SVB, SVC) Faulty judgment of solenoid valve Stop the operation of the applied BC remote controller system. (Use the remote controller to turn off.) Stop the Stop the operation. operation. Check whether the wire to the solenoid valve is not connected wrongly, or the connector is not loose.
  • Page 180 Check whether the BC board output signal and the solenoid valve operation correspond. Note1 SVA, SVB, SVC SVA, SVB and SVC turn on or off according to the indoor unit operation mode. Mode Cooling Heating Stop Defrost Branch end SVM1, SVM2 [P400-P550 types] SVM1,SVM2 turns on or off according to the operation mode.
  • Page 181 6. LEV (1) Indoor, BC controller LEV The valve opening angle changes in proportion to the number of pulses. (Connections between the indoor unit’s control board and indoor, BC controller LEV.) Indoor control board Wire joining connecter DC12V φ 6 Brown φ...
  • Page 182 (2) Judgment methods and likely failure mode Caution: The specifications of the outdoor unit (outdoor LEV) and indoor unit (indoor LEV) differ. For this reason, there are cases where the treatment contents differ, so follow the treatment specified for the appropriate LEV as indicated in the right column.
  • Page 183 7. Inverter and compressor a. Replace only the compressor if only the compressor is found to be defective. (Overcurrent will flow through the inverter if the compressor is damaged, however, the power supply is automatically cut when overcurrent is detected, protecting the inverter from damage.) b.
  • Page 184 (2) Treatment of inverter output related troubles Check item Phenomena Treatment Perform the following: (1) IPM/overcurrent error. • Replace INV board. Check the INV 1. Disconnect INV board CNDR2. (4250 detailed No. 101, 102, 103, board error After removing, turn on the out- 104, 105, 106, 107) detection circuit.
  • Page 185 Check item Phenomena Treatment 1. Check to see if the IPM screw (1) Screw terminal is loose. Check all IPM screw terminals and Check the terminal is loose. tighten. inverter circuit trouble. 2. Check the exterior of the IPM. (2) IPM is cracked due to swelling. •...
  • Page 186 (3) Trouble measures when main power breaker tripped Check item Phenomena Treatment Perform Meg check between the (1) Zero to several ohm, or Meg failure. Check each part in the main inverter circuit. terminals in the power terminal • Refer to "Simple checking Procedure for in- block TB1.
  • Page 187 (5) Intelligent power module (IPM) Measure resistances between each terminal of IPM with tester, and use the results for troubleshooting Notes on measurement • Make sure the polarity before the measurement. (On the tester, black normally indicates plus.) • Make sure that the resistance is not open (∞Ω) or not shorted (to 0Ω). •...
  • Page 188 (7) Caution at replacement of inverter parts (1) Fully check wiring for incorrect and loose connection. The incorrect or loose connection of the power circuit part wiring like IPM and diode module causes to damage the IPM. Therefore, check the wiring fully. As the insufficient tightening of screws is difficult to find, tighten them together additionally after finishing other works.
  • Page 189 8. Control circuit (1) Control power source function block [ P200~P400 types ] Power source system Control system (DC5~30V) Smoothing Compressor Noise filter Rectifier 52C1 capacitor Inverter AC380~415V Terminal block for power source G/A board Fuse (6.3A) Fuse IPM drive circuit (10A) Heat exchanger...
  • Page 190 [ P450~P650 type ] Power source system Control system (DC5~30V 51C2 Fuse (50A) 52C2 No.2 Compressor Smoothing No.1 capacitor AC380~415V Rectifier 52C1 Inverter Noise filter Compressor Terminal block for power source G/A board Heat Fuse (6.3A) exchanger 52C2 Fuse Relay board IPM drive circuit (10A) Heat...
  • Page 191 (2) Outdoor unit transmission power source circuit failure judgment Check voltage of indoor/outdoor transmis- sion terminal block (TB3) of outdoor unit. Check and modify transmission line for DC24 ~ 30V disconnection & poor contact Check voltage of TB3 by removing transmission line from TB3.
  • Page 192: Refrigerant Leak

    [5] Refrigerant Leak 1. Leak spot: In the case of extended pipe for indoor unit (Cooling season) 1 Mount a pressure gauge on the check joint (CJ2) for low-pressure service. 2 Stop all the indoor units, and close the liquid ball valve (BV2) inside the outdoor unit while the compressor is being stopped.
  • Page 193 3. Leak spot: In the case of extended pipe for indoor unit (Heating season) 1 Conduct a test run for all the indoor units under the heating mode. (1) To start a test run for all the indoor units, turn on SW3-2 when SW3-1 on the outdoor unit main board is ON. (2) Change the setting of the remote controller for all the indoor units to the heating mode.
  • Page 194: Compressor Replacement Instructions (Only P450-P650 Types)

    [6] Compressor Replacement Instructions (only P450-P650 types) Follow the instructions below when replacing the compressor. When replacing the compressor No.1 (inverter drive), start replacing after judging whether the compressor is malfunctioning or the inverter is malfunctioning. When only one compressor is malfunctioning, operate the compressor for approximately an hour under emergency operation mode before the replacement, check the items below, and replace the compressor after examining whether the return oil circuit is working properly or not.
  • Page 195: Collecting The Cooling Liquid From The Accumulator (Only P450-P650 Types)

    (19) Attach the crankcase heater. Note : Attach the appropriate crankcase heater to the appropriate compressor. (20) Attach the soundproof material to the compressor. (21) Attach the discharge tempareture themistor, and attach the insulation cover. (22) Attach the power source wire to the terminal on the compressor. (23) After vacuuming, calculate the amount of added refrigerant at factory shipment and the amount of added refrigerant on site, and charge the system.
  • Page 196: Bc Controller Service Instruction

    [8] BC controller service instruction ✻Special care must be taken when replacing heavy parts. (1) Service panel Work procedure Explanatory figure 1. Remove 2 lock nuts on the control box, loose 2 lock nuts, Ceiling panel Service panel Loose and remove the control box. 2.
  • Page 197 (4) Pressure sensor Work procedure Explanatory figure 1. Remove the service panel. TH11 TH16 PS3 PS1 LEV3 1 For the pressure sensors PS1 and PS3, refer to LEV1 (1)-1.2. 2. Remove the applied pressure sensor connector from the LEV2 control board, and insulate the connector. 1 Liquid-side pressure sensor (CNP1) 2 Intermediate-part pressure sensor (CNP3) TH12...
  • Page 198 ✻Special care must be taken when replacing heavy parts. (6) Solenoid valve Work procedure Explanatory figure 1. Remove the service panel. (Refer to (1)-1.2.3.) Double pipe heat exchanger 2. Remove the connector of the applied solenoid valve. 3. Remove the solenoid valve coil. 1 For the solenoid valve coil of SVA, SVB and SVM1, 2 service from the inspection door is possible.
  • Page 199: Led Display

    LED display [1] LED Monitor Display 1. How to read LED for service monitor By setting of DIP SW1-1 ~ 1-10, the unit operating condition can be observed with the service LED on the control circuit board. (For the relation of each DIP SW to the content, see the table provided.) As shown in the figure below, the LED consist of 7 segments is put in 4 sets side by side for numerical and graphic display.
  • Page 200 3. Time data storage function ❉ This function is not compatible with some units. The outdoor unit has a simple clock function to receive the time setting from the system controller, such as the G50A, and count the current time with an internal timer. If an error (prediction) occurs, the error history data and the error detection time are saved in the service memory.
  • Page 201 4. List of code on the LED monitor LED monitor display Item Remarks 1234567890 0000000000 Relay output display 1 Comp Comp 1 Comp 2 Lights for LD8 is a relay output (lighting to display) operation operation operation 52C1 52C2 normal which lights up at all operation times when the...
  • Page 202 Item Remarks 1234567890 0111100000 Unit No.1 Unit No.2 Unit No.3 Unit No.4 Unit No.5 Unit No.6 Unit No.7 Unit No.8 Indoor unit Lights up when thermostat thermostat is on. Unit No.9 Unit No.10 Unit No.11 Unit No.12 Unit No.13 Unit No.14 Unit No.15 Unit No.16 1111100000 Goes off when thermostat is off.
  • Page 203 Item Remarks 1234567890 1110001000 High pressure 0001001000 -99.9 ~ 999.9 The unit is [ kgf/cm ↑ Low pressure 1001001000 0101001000 1101001000 0011001000 1011001000 Σ Qj (=Σ Qjc+Σ Qjh) 0000 ~ 9999 0111001000 Σ Qjc ↑ 1111001000 Σ Qjh ↑ 0000101000 -99.9 ~ 999.9 1000101000 Target condensor...
  • Page 204 Item Remarks 1234567890 0000 ~ 9999 111 1111011000 COMP1 bus voltage The unit is [ V ]. 112 0000111000 113 1000111000 114 0100111000 115 1100111000 116 0010111000 117 1010111000 Compressor 1 opera- 0000 ~ 9999 The unit is [ h ]. tin time upper 4 digits.
  • Page 205 Item Remarks 1234567890 150 0110100100 BC (Main,Standard) TH12 -99.9 ~ 999.9 The unit is [ ˚C ]. ↑ BC (Main,Standard) TH15 151 1110100100 ↑ BC (Main,Standard) TH16 152 0001100100 BC (Main,Standard) 63HS1 ↑ 153 1001100100 The unit is [ kgf/cm ↑...
  • Page 206 Item Remarks 1234567890 Inverter error detail Inverter error detail (0001 ~ 0120) Address and error code 193 1000001100 are reversed and disp- 194 0100001100 0000 ~ 9999 layed. Error history 9 "----" is displayed when there is no error. Inverter error detail Inverter error detail (0001 ~ 0120) 195 1100001100 0000 ~ 9999...
  • Page 207 Item Remarks 1234567890 229 1010011100 230 0110011100 -99.9 ~ 999.9 The unit is [ ˚C ]. 231 1110011100 THHS1 232 0001011100 233 1001011100 234 0101011100 THHS5 -99.9 ~ 999.9 235 1101011100 236 0011011100 237 1011011100 238 0111011100 239 1111011100 240 0000111100 241 1000111100 242 0100111100 243 1100111100...
  • Page 208 Item Remarks 1234567890 271 1111000010 0000 ~ 9999 Number of fans being used 272 0000100010 273 1000100010 274 0100100010 275 1100100010 276 0010100010 277 1010100010 278 0110100010 279 1110100010 -99.9 ~ 999.9 COMP1 operation Peak value [ A ]. current (DC) 280 0001100010 281 1001100010 -99.9 ~ 999.9...
  • Page 209 Item Remarks 1234567890 309 1010110010 310 0110110010 311 1110110010 312 0001110010 313 1001110010 314 0101110010 315 1101110010 316 0011110010 317 1011110010 318 0111110010 319 1111110010 320 0000001010 BC (Main,Standard) TH11 -99.9 ~ 999.9 The unit is [ ˚C ]. ↑ 321 1000001010 BC (Main,Standard) TH12 ↑...
  • Page 210 Item Remarks 1234567890 0000 ~ 9999 0000 ~ 9999 353 1000011010 IC3 Address/Capacity code Displayed alternately every 5 seconds. ↑ ↑ 354 0100011010 IC4 Address/Capacity code ↑ ↑ 355 1100011010 IC5 Address/Capacity code 356 0010011010 ↑ ↑ IC6 Address/Capacity code 357 1010011010 ↑...
  • Page 211 Item Remarks 1234567890 396 0011000110 397 1011000110 398 0111000110 399 1111000110 400 0000100110 401 1000100110 402 0100100110 403 1100100110 404 0010100110 405 1010100110 406 0110100110 407 1110100110 408 0001100110 IC1 Suction temperature -99.9 ~ 999.9 The unit is [ ˚C ]. IC2 Suction temperature ↑...
  • Page 212 Item Remarks 1234567890 IC32 Suction temperature 439 1110110110 -99.9 ~ 999.9 The unit is [ ˚C 440 0001110110 441 1001110110 442 0101110110 443 1101110110 444 0011110110 445 1011110110 446 0111110110 447 1111110110 448 0000001110 449 1000001110 450 0100001110 451 1100001110 452 0010001110 453 1010001110 454 0110001110...
  • Page 213 Item Remarks 1234567890 IC25 Liquid pipe temp. 482 0100011110 -99.9 ~ 999.9 The unit is [ ˚C ]. 483 1100011110 ↑ IC26 Liquid pipe temp. ↑ IC27 Liquid pipe temp. 484 0010011110 ↑ IC28 Liquid pipe temp. 485 1010011110 ↑ 486 0110011110 IC29 Liquid pipe temp.
  • Page 214 Item Remarks 1234567890 -99.9 ~ 999.9 The unit is [ ˚C IC3 Gas pipe temp. 525 1011000001 ↑ IC4 Gas pipe temp. 526 0111000001 ↑ IC5 Gas pipe temp. 527 1111000001 ↑ 528 0000100001 IC6 Gas pipe temp. ↑ 1000100001 IC7 Gas pipe temp.
  • Page 215 Item Remarks 1234567890 568 0001110001 569 1001110001 0101 110001 1101110001 0011110001 -99.9 ~ 999.9 1011110001 IC1SH The unit is [ ↑ 0111110001 IC2SH ↑ 1111110001 IC3SH ↑ 0000001001 IC4SH ↑ IC5SH 1000001001 ↑ 0100001001 IC6SH ↑ IC7SH 1100001001 ↑ IC8SH 0010001001 ↑...
  • Page 216 Item Remarks 1234567890 1100011001 0010011001 1010011001 0110011001 1110011001 0001011001 1001011001 0101011001 1101011001 0011011001 1011011001 0111011001 1111011001 -99.9 ~ 999.9 IC1SC The unit is [ ↑ 0000111001 IC2SC ↑ 1000111001 IC3SC ↑ 0100111001 IC4SC ↑ 1100111001 IC5SC ↑ 0010111001 IC6SC ↑ 1010111001 IC7SC ↑...
  • Page 217 Item Remarks 1234567890 -99.9 ~ 999.9 0111000101 The unit is [ deg ]. IC32SC 1111000101 0000100101 1000100101 0100100101 1100100101 0010100101 1010100101 0110100101 1110100101 0001100101 1001100101 0101100101 1101100101 0011100101 1011100101 0111100101 1111100101 0000010101 1000010101 0100010101 1100010101 0010010101 INV board S/W 0.00 ~ 99.99 version 1010010101 0110010101...
  • Page 218 Item Remarks 1234567890 00:00 ~ 23:59 Hour : minute 0001110101 Error detection time4 Display alternately 00.00 ~ 99.12 / 1 ~ 31 1001110101 Error detection time4-2 year/month and day 00:00 ~ 23:59 Hour : minute 0101110101 Error detection time5 Display alternately 1101110101 00.00 ~ 99.12 / 1 ~ 31 Error detection time5-2...
  • Page 219 Item Remarks 1234567890 0000 ~ 2000 738 0100011101 Fully open : 2000 IC25 LEV opening pulses ↑ 1100011101 IC26 LEV opening pulses ↑ 0010011101 IC27 LEV opening pulses IC28 LEV opening pulses ↑ 1010011101 ↑ IC29 LEV opening pulses 0110011101 ↑...
  • Page 220 Item Remarks 1234567890 1011000011 IC18 Operation mode 0111000011 IC19 Operation mode 1111000011 IC20 Operation mode 0000100011 IC21 Operation mode 1000100011 IC22 Operation mode 0100100011 0000 : Off IC23 Operation mode 1100100011 IC24 Operation mode 0001 : Fan 0010100011 IC25 Operation mode 0002 : Cooling 1010100011 IC26 Operation mode...
  • Page 221 Item Remarks 1234567890 Hours since previous 0001101011 0000 ~ 9999 IC11 Filter maintenance [ h ] 1001101011 IC12 Filter ↑ 0101101011 IC13 Filter ↑ IC14 Filter 1101101011 ↑ IC15 Filter 0011101011 ↑ 1011101011 IC16 Filter ↑ 0111101011 IC17 Filter ↑ IC18 Filter 1111101011 ↑...
  • Page 222 Item Remarks 1234567890 1100011011 0010011011 1010011011 0110011011 -99.9 ~ 999.9 1110011011 U phase current The unit is [ A ]. effective value 1 ↑ 0001011011 W phase current effective value 1 ↑ 1001011011 The unit is [ deg ]. Power tactor phase angle 1 (deg) 0101011011 1101011011...
  • Page 223 Item Remarks 1234567890 1101000111 1020 0011111111 1021 1011111111 1022 0111111111 1023 1111111111 - 220 -...
  • Page 224 Service Handbook PURY-P200, P250, P300, P350, P400YGM-A PURY-P450, P500, P550, P600, P650YGM-A HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Issued in Sep. 2004 HWE04020 New publication effective Sep. 2004. Printed in Japan Specifications subject to change without notice.