Mitsubishi Heavy Industries KX6 series Service Manual
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Mitsubishi Heavy Industries KX6 series Service Manual

Vrf inverter multi-system air conditioners
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SERVICE MANUAL

VRF INVERTER MULTI-SYSTEM AIR CONDITIONERS
Alternative refrigerant R410A use models
KX6 series
FDC224KXE6M, 280KXE6M, 335KXE6M
FDCS224KXE6M, 280KXE6M, 335KXE6M (Corrosin Protection Treatment series)
(INDOOR UNIT) -KX6 series-
FDT28KXE6D
FDT36KXE6D
FDT45KXE6D
FDT56KXE6D
FDT71KXE6D
FDT90KXE6D
FDT112KXE6D
FDT140KXE6D
FDT160KXE6D
FDUM22KXE6D
FDUM28KXE6D
FDUM36KXE6D
FDUM45KXE6D
FDUM56KXE6D
FDUM71KXE6D
FDUM90KXE6D
FDUM112KXE6D
FDUM140KXE6D
FDU500FKXE6D
FDU850FKXE6D
FDU1300FKXE6D
FDU1800FKXE6D
Note:
•
Regarding the Duct Connected-High static Pressure-type Outdoor Air Processing Unit
Series (FDU500∼1800FKXE6D), refer to the DATA BOOK No.'10
(Heat pump type)
FDTC22KXE6D
FDTW28KXE6D
FDTC28KXE6D
FDTW45KXE6D
FDTC36KXE6D
FDTW56KXE6D
FDTC45KXE6D
FDTC56KXE6D
FDUT22KXE6D
FDUH22KXE6D
FDUT28KXE6D
FDUH28KXE6D
FDUT36KXE6D
FDUH36KXE6D
FDUT45KXE6D
FDUT56KXE6D
Manual No. '10
FDTQ22KXE6D
FDTS45KXE6D
FDTQ28KXE6D
FDTS71KXE6D
FDTQ36KXE6D
FDK22KXE6D
FDE36KXE6D
FDK28KXE6D
FDE45KXE6D
FDK36KXE6D
FDE56KXE6D
FDK45KXE6D
FDE71KXE6D
FDK56KXE6D
FDE112KXE6D
FDK71KXE6D
FDE140KXE6D
KX-DB-144
•
Kx-Sm-148
•
60Hz only
FDU224KXE6D
FDU280KXE6D
FDFW28KXE6D
FDFW45KXE6D
FDFW56KXE6D

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Summary of Contents for Mitsubishi Heavy Industries KX6 series

  • Page 1: Service Manual

    SERVICE MANUAL VRF INVERTER MULTI-SYSTEM AIR CONDITIONERS Alternative refrigerant R410A use models (OUTDOOR UNIT) KX6 series (Heat pump type) FDC224KXE6M, 280KXE6M, 335KXE6M FDCS224KXE6M, 280KXE6M, 335KXE6M (Corrosin Protection Treatment series) (INDOOR UNIT) -KX6 series- FDT28KXE6D FDTC22KXE6D FDTW28KXE6D FDTQ22KXE6D FDTS45KXE6D FDU224KXE6D FDT36KXE6D...

  • Page 2: Table Of Contents

    '10 • KX-SM-148 CONTENTS 1 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ..... 1 1.1 Wired remote controller (Opition parts) ............1 1.2 Operation control function by the indoor controller ........2 1.3 Operation control function by the remote controller ........8 1.4 Operation control function by the outdoor controller ........

  • Page 3: Outline Of Operation Control By Microcomputer

    '10 • KX-SM-148 1. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 1.1 Wired remote controller (Option parts) The figure below shows the remote controller with the cover opened. Note that all the items that may be displayed in the liquid crystal display area are shown in the figure for the sake of explanation.

  • Page 4: Operation Control Function By The Indoor Controller

    '10 • KX-SM-148 1.2 Operation control function by the indoor controller Operations of functional items during cooling/heating Cooling Heating Operation Dehumidify Thermostat Thermostat Thermostat Thermostat Hot start (Defrost) Functional item Compressor � � � � � � �/� 4-way valve �...
  • Page 5 '10 • KX-SM-148 Remote controller display during the operation stop “Centralized control ON” is displayed always on the LCD under the “Center/Remote” and “Center” modes during the operation stop (Power ON). This is not displayed under the “Remote” mode. (b) If this display is not shown under the “Center/Remote” mode, check if the indoor unit power switch is turned on or not. Hot start (Prevention of cold draft during heating) At the startup of heating operation, at resetting the thermostat, during defrosting operation and at returning to heating, the indoor fan is controlled by the indoor heat exchanger temperature (detected with Th...
  • Page 6 '10 • KX-SM-148 Filter sign As the operation time (when ON/OFF switch is at ON) accumulates to 180 hours (1), “Filter cleaning” is displayed on the remote controller. (This is also displayed when the unit is in trouble and under the centralized control, regardless of ON/OFF) Note (1) Time setting for the filter sign can be made as shown below using the indoor function of wired remote controller “Filter sign setting”.
  • Page 7 '10 • KX-SM-148 (11) Drain motor (DM) control [Applicable type: FDT, FDTC, FDTW, FDTS, FDTQ, FDUM, FDQS and FDU90～140] Drain motor (DM) start operation at the same time when compressor ON at cooling and dehumidifying mode and keeps operating for 5 minutes after operation stop, the anomalous stop, thermostat OFF and switching from cooling or dehumidifying operation to fan or heating operation.
  • Page 8 '10 • KX-SM-148 (14) Anomalous fan motor (FDT,FDTC,FDFW and FDK only) Fan motor will be stopped with displaying “E16”, if it has detected the revolutions of 200 rpm or less continuously for 30 seconds at a rate of 4 times within 60 minutes, after starting the motor. (15) High ceiling control [Applicable type: FDT, FDTC, FDTW, FDTS and FDE] In the case of indoor unit installed in a higher ceiling room, the airflow volume mode control can be changed with the wired remote controller indoor unit function “FAN SPEED SET”.
  • Page 9 '10 • KX-SM-148 • Heating output: Outputs DC12V relay drive signal during heating operation. • Compressor ON output: Outputs DC12V relay drive signal when the compressor is operating. • Error output: When any anomalous condition occurs, it outputs DC12V relay drive signal. (b) Remote operation input Remote operation inputs (switch input, timer input) connectors (CnT) are provided on the indoor control PCB.

  • Page 10: Operation Control Function By The Remote Controller

    '10 • KX-SM-148 1.3 Operation control function by the remote controller Switching sequence of the operation mode switches of remote controller Dehumidifying Cooling Heating [CPU reset] When the “CHECK” and “GRILL” buttons on the remote controller are pressed at the same time, this function is activated. This function is same as power supply reset.

  • Page 11: Operation Control Function By The Outdoor Controller

    '10 • KX-SM-148 1.4 Operation control function by the outdoor controller Normal control Operation of major functional components under each operation mode Heating Operation mode Cooling/Dehumidifying Thermostat Thermostat Thermostat Thermostat Defrost Fonctional item 〇 × × 〇 × 〇 Compressor (CM) 〇...
  • Page 12 '10 • KX-SM-148 (2) 　 Compressor pre-start control (a)　Remote controller full stop → Operation (i) 　 Start conditions • When it has changed to the compressor operation frequency command > 0 Hz. from the state of compressor stopping. (ii) 　 Control contents •...
  • Page 13 '10 • KX-SM-148 (b)　Cooling → Heating (i) 　 Start conditions • When the outdoor unit operation mode is changed from the cooling operation to heating operation (ii) 　 Control contents When the compressor is operating, it makes the compressor stopped. Each functional component operates according to the sequence shown below.
  • Page 14 '10 • KX-SM-148 (c)　Heating → Cooling (i) 　 Start conditions • When the outdoor unit operation mode is changed from the heating operation to cooling operation (ii) 　 Control contents When the compressor is operating, it make the compressor stopped. Each functional component operates according to the sequence shown below.
  • Page 15 '10 • KX-SM-148 (3)　Compressor control (a)　4-way valve switching safeguard In order to switch 4-way valve completely, it makes the compressor speed increasing as follows. (i) 　 This control starts to increases the compressor speed from 10 Hz after the compressor pre-start control ends. (ii) 　...
  • Page 16 '10 • KX-SM-148 < End conditions > When either one of following conditions is established a) 　 When the frequency upper limit increase by this control continued for 15 minutes in total When the inverter has stopped within 15 minutes after the start and is started again, it starts with the normal protection start and increases the frequency upper limit at a rate of 5 Hz/minute till the frequency increase continues for 15 minutes in total.
  • Page 17 '10 • KX-SM-148 (4)　Outdoor fan control (a)　Outdoor fan speed and fan motor rotation speed. The 7th outdoor fan speed in the following table is specified as the rated speed. Under the normal control, the speeds up to 8th level (800 min ) are used.
  • Page 18 '10 • KX-SM-148 (c)　Outdoor fan cooling control at low outdoor air temperature. (i) 　 Start conditions This control is performed when all of following conditions is established. ➀ When the ordinary outdoor fan control is performed ➁ Outdoor air temperature ≦ 10ºC (It is reset with the hysteresis of the outdoor air temperature > 15ºC.) Valid Invalid Outdoor air temperature...
  • Page 19 '10 • KX-SM-148 (5) 　 Defrost control (a)　Temperature condition of defrosting 1) 　 S tart conditions (Standard specification or cold region specification can be selected by switching the jumper wire J15.) Defrost operation will start, when outdoor unit whose compressor is operating under heating mode has satisfied all the following conditions.
  • Page 20 '10 • KX-SM-148 (b)　Time condition of defrosting 1) 　 Start conditions Defrosting operation start when any of the following conditions is satisfied. (i) 　 When 33 minutes of cumulative compressor operation time has passed since heating operation started. (ii) 　 When 33 minutes of cumulative compressor operation time has passed since the previous defrosting ended. (iii) 　...
  • Page 21 '10 • KX-SM-148 (7) 　 Test run (a) 　 Start conditions (i) 　 Turn ON the test run switch (SW5-1). The switch is invalid if it is turned ON before the power ON. (ii) 　 Pump down switch (SW5-3) must be turned OFF. (b) 　...
  • Page 22 '10 • KX-SM-148 External input and demand input (a) Operation permission and prohibition modes (Note) With 7-segment display [P07]-[0] Operation permission or operation prohibition mode is switched with the connector (CnS1) and the jumper wire (J13) on the outdoor PCB. J13: Switching of CnS1 input method J13 short-circuited: CNS1 is for the level input.
  • Page 23 '10 • KX-SM-148 Operation/ stop control by the demand input CnS1 of outdoor unit CnS1: Switching of demand control/ Input: CnS1 Switching with J13 normal operation Short-circuit Demand control Short-circuit (Level input)  Normal operation Switching of normal operation/ Open (Pulse input) Open demand control (Reversal) Short-circuit...
  • Page 24 '10 • KX-SM-148 (c)　2-step demand control (i) 　 Start conditions When all of the following conditions is established. 7-segment [P04] is set at any other than OFF. Demand control is turned on. Outdoor unit external input terminal “2-step demand input” is valid. (Demand external input becomes valid at release.) (ii) 　...
  • Page 25 '10 • KX-SM-148 (2)　Silent mode control (a)　Start conditions When all of the following conditions is established (i) 　 At the start of silent mode initiated by the indoor unit or when the silent mode input is made effective (short-circuited) at the external input terminal (Factory default: CnG2) on the outdoor unit (ii) 　...
  • Page 26 '10 • KX-SM-148 Outdoor fan snow protection control (a) This control is enabled/disabled by entering data into 7-segment display. (b) Setting method of outdoor fan control [Starting conditions] When following conditions are established for 10 minutes continuously. Snow protection control setting is valid ([P02] - 1) and outdoor air temperature < 3°C or external input of outdoor fan snow protection control ON.
  • Page 27 '10 • KX-SM-148 Energy saving mode control This control is effective, when [P04] of 7-segment display is set 000, 040, 060, 080 (except OFF) (a) Control contents Compressor upper limit speed is changed according to the setting ratio. (ii) Compressor upper limit speed is obtained by multiplying the rating speed (at cooling/heating) with the setting ratio as follows.
  • Page 28 '10 • KX-SM-148 Pump down operation control for removal of the unit When an outdoor unit is discarded or removed, the pump down control is performed at the outdoor unit side in order to recover the refrigerant quickly to the outdoor unit. (a) Start conditions This is implemented with the liquid service valve closed.
  • Page 29 '10 • KX-SM-148 Data output 7-segment and operation data retention (a) 7-segment display Operation information is displayed for checking various operation data during test run and for helping malfunction diagnosis at servicing. Input data to microcomputer, contents of outdoor unit control, indoor unit registration information, or other, are mainly displayed on the 7-segment LED.
  • Page 30 '10 • KX-SM-148 (iii) Precedence of display [Exx] > [Related to compressor dilution ration protection control ([dLP], [dLC], [dLH]) > [Related to check ➀ operation ([CHJ], [CHU]) > [PdS] > [PdE] > [oPE] > [CAP] > [Axx] > [Cxx], [Pxx] If resetting from the display of ➀...
  • Page 31 '10 • KX-SM-148 (b) List of 7-segment displays Code Contents of display Data display range Minimum unit Remarks Error [Exx] display Caution [oPx] display [PdS][PdE] Special [CH ][CHF][CO ][HE ][PCL][dLP][dLC][dLH] display [oPE][CAP] Code Contents of data display Data display range Minimum unit Remarks <Sensor value, actuator information>...
  • Page 32 '10 • KX-SM-148 Code Minimum Contents of data display Data display range Remarks unit Order of 100: CNG2 C32 External input (0: Open, – Order of 10: (Spare) 1: Short-circuit) Order of 1: (Spare) Order of 100: 52C-1 C33 Relay output (0: Open, –...
  • Page 33 '10 • KX-SM-148 ＊1 Compressor stop cause (Cord No. C68) It shows the latest comprressor anomalous stop cause Compressor stop cause At power on Outdoor air temperature Outdoor heat exchanger temperture 1 Outdoor heat exchanger temperture 2 Discharge pipe temperature sensor 1(CM1) Suction pipe temperature sensor Sub-cooling temperature sensor 1(liquid side) Sensor disconnection...
  • Page 34 '10 • KX-SM-148 Code Minimum Contents of data display Data display range Remarks unit <Anomalous counter information> C70 Counter · Sensor wire disconnected 0 ~ 3 C71 Counter · High pressure protection 0 ~ 5 Counter · Anomalous low pressure ➂ (During 0 ~ 5 operation) C73 Counter ·...
  • Page 35 '10 • KX-SM-148 Code Min. Data display contents Data display range Remarks unit <Service engineer setting> 0 : None (Default) 1 :Operated P16 Check operation log User can operate 1 → 0 only. Operation of 0 → 1 is prohibited. –...
  • Page 36 '10 • KX-SM-148 (c) Saving of Operation Data Mainly for investigating the causes of market claims, operation data are always saved in memory. If any trouble occurs, the data writing is stopped and only the operation data prior to the time when the trouble occurs are recorded. These data can be loaded to a PC via RS232C connector of PCB and utilized for identifying causes.
  • Page 37 '10 • KX-SM-148 Code Record data Number of Write contents Unit of write Contents Data write range bytes 00: No error on outdoor unit Error code 00 ~ 99 – 01-99: All errors 00 – 3F: Outdoor Error existing unit address 00 ~ FF –...
  • Page 38 '10 • KX-SM-148 Code Record data Unit of Number of Write contents Contents Data write range write bytes FMo1 Fan speed command 0 ~ 65535 10min-1 FMo2 Fan speed command 0 ~ 65535 10min-1 EEVH1 opening degree 0 ~ 65535 1 pulse EEVSC opening degree 0 ~ 65535...
  • Page 39 '10 • KX-SM-148 Code Record data Unit of Number of Write contents Contents Data write range write bytes Dip SW [SW6] – – Bit0 SW6-1 0 : OFF, 1 : ON Bit1 SW6-2 0 : OFF, 1 : ON Bit2 SW6-3 0 : OFF, 1 : ON Bit3...
  • Page 40 '10 • KX-SM-148 Code Record data Unit of Number of Write contents Contents Data write range write bytes <Error counter information> Control status HP (63H1) anomaly counter 0 ~ 5 Control status LP anomaly counter while 0 ~ 5 running Control status LP anomaly counter while 0 ~ 5 stopping...
  • Page 41 '10 • KX-SM-148 Code Record data Unit of Number Write contents Contents Data write range write of bytes 0.05 Heating setting 2 (Target high 3.15 ~ 2.75 pressure) [MPa] Heating setting 3 (Judgment 30 ~ 38  [°C] temperature) Check operation condition (User can –...

  • Page 42: System Troubleshooting Procedure

    '10 • KX-SM-148 SYSTEM TROUBLESHOOTING PROCEDURE 2.1 Basics of troubleshooting Basic troubleshooting is to check/analyze/save data by connecting the Mente PC. Whenever arriving at the site, always connect the Mente PC before starting work. Method of error data analysis (Basic procedure) •...

  • Page 43: Explanation Of Troubleshooting

    '10 • KX-SM-148 2.2 Explanation of troubleshooting (a) Checking 15V on the control PCB (Step to check if the inverter PCB fails or not) Use this to diagnose E41, E42, E45 and E48. Power OFF (Power supply circuit breaker OFF) Fan motor check *Be sure to check both fan motor 1 and 2 Be sure to wait for 3 minutes after turning the...

  • Page 44: Contents Of Troubleshooting

    '10 • KX-SM-148 2.3 Contents of troubleshooting (a) List of inspection displays Indoor and outdoor units Remote 7-segment controller Name of inspection Classification Page display error code – Remote controller communication error Communication error – Duplicated indoor unit address Address setting error – Outdoor unit signal line error Address pairing setting error –...
  • Page 45 '10 • KX-SM-148 (b) Troubleshooting Green Error code Content Keeps flashing Stays Off None Indoor Operates but does not cool Remote controller: 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Check the indoor fan operation Check the temperature difference between return and suction air of indoor unit It is normal...
  • Page 46 '10 • KX-SM-148 Green Error code Content Keeps flashing Stays Off Indoor None Operates but does not heat Remote controller: 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Check the indoor fan operation Check the temperature difference between return and suction air of indoor unit It is normal...
  • Page 47 '10 • KX-SM-148 Green Error code Content Stays Off Stays Off Indoor None Earth leakage breaker activated Remote controller: 7-segment display: Stays Off Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Are the insulation resistance Replace compressor. * and and coil resistance of compressor OK? 2.
  • Page 48 '10 • KX-SM-148 Green Error code Content – – Indoor None Excessive noise/vibration (1/3) Remote controller: 7-segment display: – – Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure If excessive noise/vibration persists when sufficient time has elapsed after Does noise/ vibration occur during stopping the unit, it is...
  • Page 49 '10 • KX-SM-148 Green Error code Content – – Indoor None Excessive noise/vibration (2/3) Remote controller: 7-segment display: – – Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure From 1/3 Rearrange the piping to Are the pipes avoid contact with the contacting with the casing.
  • Page 50 '10 • KX-SM-148 Green Error code Content – – Indoor None Excessive noise/vibration (3/3) Remote controller: 7-segment display: – – Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure From 2/3 If insufficient cooling/ [Adjustment heating problem happens during commissioning] due to anomalous operating Does noise/vibration occur when the conditions at cooling...
  • Page 51 '10 • KX-SM-148 Green Error code Content Keeps flashing Stays Off Indoor None Louver motor anomaly Remote controller: 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Check at the indoor unit side. Operate after waiting for more than 1 minute.
  • Page 52 '10 • KX-SM-148 Green Power supply system anomaly Error code Content Stays Off Stays Off Indoor None Remote controller: (Power supply to indoor unit PCB) 7-segment display: Stays Off 2 times flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure AC 220V...
  • Page 53 '10 • KX-SM-148 Green Error code Content Power supply system error Stays Off Keeps lighting Indoor None (Power supply to remote controller) Remote controller: 7-segment display: Stays Off Keeps lighting Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Isn't there any Correct it.
  • Page 54 '10 • KX-SM-148 Green Error code Content Indoor WAIT Keeps flashing Stays Off Remote controller: WAIT 7-segment display: Outdoor Keeps flashing Keeps flashing 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (In case that is kept WAIT on displaying on the remote controller for more than 2 is kept on WAIT...
  • Page 55 '10 • KX-SM-148 Green Error code Content Keeps flashing Stays Off Indoor Remote controller: WAIT WAIT 7-segment display: Keeps flashing Keeps flashing Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (In case of fuse blown, how to check the unit before replacement of fuse) Isn't there any short circuit...
  • Page 56 '10 • KX-SM-148 Green Error code Content Keeps flashing Stays Off Indoor Remote controller: WAIT WAIT 7-segment display: Keeps flashing Keeps flashing Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (No display on the remote controller after power ON) No display on the remote controller after power ON Does...
  • Page 57 '10 • KX-SM-148 Green Error code Content Keeps flashing Stays Off Indoor Remote controller: WAIT WAIT 7-segment display: Keeps flashing Keeps flashing Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (In case that is kept WAIT on displaying on the remote controller for more than 2 is kept on WAIT...
  • Page 58 '10 • KX-SM-148 Green Error code Content Stays OFF Stays Off Indoor Remote controller: WAIT WAIT 7-segment display: Stays OFF Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (In case that LED on outdoor control PCB stays OFF) In case that LED on outdoor control PCB stays Once turn OFF the breaker...
  • Page 59 '10 • KX-SM-148 Green Error code Content Stays Off Stays Off Indoor Remote controller: WAIT WAIT 7-segment display: Stays Off Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (In case of fuse blown, how to check the unit before replacement of fuse) Isn't there any short circuit...
  • Page 60 '10 • KX-SM-148 Green Error code Content Stays OFF Stays Off 〔 No display 〕 Indoor Remote controller: [No display] 7-segment display: Stays OFF Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (No display on the remote controller after power ON) No display on the remote controller after power ON...
  • Page 61 '10 • KX-SM-148 Green Error code Content Remote controller Keeps flashing Stays Off Indoor Remote controller: communication error 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is it possible to Malfunction by temporary reset normally by the power noise.
  • Page 62 '10 • KX-SM-148 Green Error code Content Keeps flashing Keeps flashing Indoor Duplicated indoor unit address Remote controller: 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the number of Review number of connected indoor units up connected units.
  • Page 63 '10 • KX-SM-148 Green Error code Content Keeps flashing 2 times flash Indoor E3/5 Outdoor unit signal line error Remote controller: 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure E3 is a communication error that occurs when communication between indoor and outdoor units is not established at all.
  • Page 64 '10 • KX-SM-148 Green Error code Content Keeps flashing *See below Indoor Communication error during operation Remote controller: 7-segment display: Keeps flashing 2 time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure * In case that indoor red LED flashes 2 times Note (1) Check the connection (disconnection, looseness) of signal wires at outdoor terminal block Is the...
  • Page 65 '10 • KX-SM-148 Green Indoor heat exchanger Error code Content Keeps flashing 1 time flash Indoor Remote controller: temperature thermistor anomaly (Thi-R) 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Insert the connector the connector of thermistor connected securely...
  • Page 66 '10 • KX-SM-148 Green Indoor return air Error code Content Keeps flashing 1 time flash Indoor Remote controller: temperature thermistor anomaly (Thi-A) 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure the connector of Insert the connector thermistor connected securely...
  • Page 67 '10 • KX-SM-148 Green Error code Content Keeps flashing 1 time flash Indoor Drain trouble Remote controller: 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model FDT, FDTC, FDTW, FDTQ, Diagnosis Countermeasure FDTS, FDR, FDU, FDUM, and FDQS series Check the error data in the remote controller.
  • Page 68 '10 • KX-SM-148 Green Error code Content Excessive number of indoor units (moe than 17 units) Keeps flashing Stays Off Indoor Remote controller: by controlling one remoto controller 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure...

  • Page 69: Address Setting Error

    '10 • KX-SM-148 Green Error code Content Address setting error Keeps flashing Keeps flashing Indoor Remote controller: by mixed setting method 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Isn't the automatic setting and manual setting mixed in the address Review address setting.
  • Page 70 '10 • KX-SM-148 Green Error code Content Indoor fan motor anomaly Keeps flashing 1 time flash Indoor Remote controller: (FDT and FDTC series) 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model FDT and FDTC series only Diagnosis Countermeasure Does any...
  • Page 71 '10 • KX-SM-148 Green Error code Content Indoor fan motor anomaly Keeps flashing 1 time flash Indoor Remote controller: (FDK and FDFW series) 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model FDK and FDFW series only Diagnosis Countermeasure Does any...
  • Page 72 '10 • KX-SM-148 Green Error code Content Address setting error of Keeps flashing 1 time flash Indoor Remote controller: master and slave indoor units 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure 2.
  • Page 73 '10 • KX-SM-148 Green Error code Content Indoor unit operation check, Keeps flashing 1 time flash Indoor Remote controller: drain motor check mode anomaly 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure E19 occurs when the power ON Is SW7-1...

  • Page 74: Indoor Fan Motor

    '10 • KX-SM-148 Indoor fan motor Green Error code Content rotation speed anomaly Keeps flashing 1 time flash Indoor Remote controller: (In case of FDT,FDTC,FDFW and FDK series) 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model FDT,FDTC,FDFW and FDK Diagnosis Countermeasure...
  • Page 75 '10 • KX-SM-148 Green Error code Content Remote controller Keeps flashing Stays Off Indoor Remote controller: temperature thermistor anomaly (Thc) 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure the connector of Insert the connector thermistor connected securely properly ?
  • Page 76 '10 • KX-SM-148 Green Error code Content Unmatch connection of Keeps flashing Stays Off Indoor Remote controller: indoor and outdoor unit 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Is the wiring connection between Correct the wiring indoor and outdoor units...
  • Page 77 '10 • KX-SM-148 Green Error code Content Keeps flashing Stays Off Indoor Duplicated outdoor unit address No. Remote controller: 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition.
  • Page 78 '10 • KX-SM-148 Green Error code Content Open L3 Phase on Keeps flashing Stays Off Indoor Remote controller: power supply at primary side 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition.
  • Page 79 '10 • KX-SM-148 Green Discharge pipe temperature Error code Content Keeps flashing Stays Off Indoor Remote controller: error (Tho-D1) E36-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition Save data for 30 minutes before stopping in Mente PC Check the ROM version...
  • Page 80 '10 • KX-SM-148 Green Error code Content Keeps flashing Stays Off Indoor Remote controller: Liqiud flooding anomaly E36-3 7-segment display: Keeps flashing 3 times flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor units Diagnosis Countermeasure Check and save the data of Save data for 30 minutes before stopping in Mente PC operating condition Check the ROM version...
  • Page 81 '10 • KX-SM-148 Outdoor heat exchanger Green Error code Content temperature termistor (Tho-R) and subcooling coil Keeps flashing Stays Off Indoor Remote controller: temperature thermistor (Tho-SC,-H) anomaly E37-1, 2, 5, 6*1 7-segment display: Keeps flashing Outdoor *1 E37-1: one time flash (Tho-R1), E37-2: 2 time flash (Tho-R2), E37-5: 5 time flash (Tho-SC), E37-6: 6 time flash (Tho-H) 5.
  • Page 82 '10 • KX-SM-148 Green Outdoor air temperature Error code Content Keeps flashing Stays Off Indoor Remote controller: thermistor anomaly (Tho-A) 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition.
  • Page 83 '10 • KX-SM-148 Green Error code Content Discharge pipe temperature Keeps flashing Stays Off Indoor Remote controller: thermistor anomaly (Tho-D1) E39-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition.
  • Page 84 '10 • KX-SM-148 Green High pressure anomaly Error code Content Keeps flashing Stays Off Indoor Remote controller: (63H1-1activated) 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition Save data for 30 minutes before stopping in Mente PC Check the sensed value of...
  • Page 85 '10 • KX-SM-148 Green Error code Content Keeps flashing Stays Off Indoor E41(E51) Remote controller: Power transistor overheat E41(E51)-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating conditions Check the temperature of Save data for 30 minutes before stopping in Mente PC...
  • Page 86 '10 • KX-SM-148 Green Error code Content Keeps flashing Stays Off Indoor Remote controller: Current cut (CM1) E42-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating conditions Save data for 30 minutes before stopping in Mente PC Check pressure anomaly...
  • Page 87 '10 • KX-SM-148 Green Error code Content Excessive number of indoor units connected, Keeps flashing Stays Off Indoor Remote controller: excessive total capacity of connection E43-1, 2 *1 7-segment display: Keeps flashing Outdoor *1 E43-1:1 time flash (Excessive number of indoor units connected), E43-2:2 time flash (Excessive capacity of indoor units connection) 5.
  • Page 88 '10 • KX-SM-148 Green Error code Content Communication error between Keeps flashing Stays Off Indoor Remote controller: inverter PCB and outdoor control PCB E45-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating conditions...
  • Page 89 '10 • KX-SM-148 Green Error code Content Mixed address setting methods Keeps flashing Stays Off Indoor Remote controller: coexistent in same network. 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating conditions Save data for 30 minutes before stopping in Mente PC Check the address setting...
  • Page 90 '10 • KX-SM-148 Green Error code Content Keeps flashing Stays Off Indoor Remote controller: Outdoor DC fan motor anomaly E48-1, 2 *1 7-segment display: Keeps flashing Outdoor *1 E48-1: 1 time flash (FMO1), E48-2 : 2 time flash (FMO2) Inspect also the fan motor 2 even if it is E48-1. 5.
  • Page 91 '10 • KX-SM-148 Green Error code Content Keeps flashing Stays Off Indoor Remote controller: Low pressure anomaly 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating conditions Save data for 30 minutes before stopping in Mente PC Check error status.
  • Page 92 '10 • KX-SM-148 Green Error code Content Suction pipe temperature thermistor anomaly (Tho-S), Keeps flashing Stays Off Indoor E53/E55 Remote controller: E53/E55-1 Under-dome temperature thermistor anomaly (Tho-C1) 7-segment display: Keeps flashing 1 time flash Outdoor E53: Tho-S, E55-1: Tho-C1 5. Troubleshooting 1.
  • Page 93 '10 • KX-SM-148 Green Error code Content High pressure sensor anomaly (PSH) Keeps flashing Stays Off Indoor Remote controller: E54-1, 2 *1 Low pressure sensor anomaly (PSL) 7-segment display: Keeps flashing Outdoor *1 E54-1: 1 time flash (PSL), E54-2 : 2 time flash (PSH) 5.
  • Page 94 '10 • KX-SM-148 Green Error code Content Power transitor temperature Keeps flashing Stays Off Indoor Remote controller: thermistor anomaly (Tho-P1) E56-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition.
  • Page 95 '10 • KX-SM-148 Green Error code Content Anomalous compressor Keeps flashing Stays Off Indoor Remote controller: by loss of synchronism E58-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition Save data for 30 minutes before stopping in Mente PC Check the data for 30 minutes before stopping...
  • Page 96 '10 • KX-SM-148 Green Error code Content Keeps flashing Stays Off Indoor Remote controller: Compressor startup failure (CM1) E59-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating conditions Save data for 30 minutes before stopping in Mente PC Check the data for 30 minutes before stopping...
  • Page 97 '10 • KX-SM-148 Green Error code Content Rotor position detection failure Keeps flashing Stays Off Indoor Remote controller: (CM1) E60-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of Save data for 30 minutes before stopping in Mente PC operating conditions Correct it...

  • Page 98: Emergency Stop

    '10 • KX-SM-148 Green Error code Content Keeps flashing Stays Off Indoor Emergency stop Remote controller: 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Indoor unit Diagnosis Countermeasure Check and save the data of operating conditions Save data for 30 minutes before stopping in Mente PC Check the conditions whether it occurs...

  • Page 99: Outdoor Unit Control Pcb Replacement Procedure

    '10 • KX-SM-148 2.4 Outdoor unit control PCB replacement procedure PCB012D017F Precautions for Safety ¡ Since the following precaution is the important contents for safety, be sure to observe them. WARNING and CAUTION are described as follows: Indicates an imminently hazardous situation which will result in death or serious injury if WARNING proper safety procedures and instructions are not adhered to.
  • Page 100 '10 • KX-SM-148 Fan motor voltage measurement point (between L63, L64) PCB voltage measurement point (between F1, DS1(-)) Fig.1 Voltage measurement points Target PCB Appearance of the controller...

  • Page 101: Inverter Pcb Replacement Procedure

    '10 • KX-SM-148 2.5 Inverter PCB replacement procedure PCB012D018 Precautions for Safety ¡ Since the following precaution is the important contents for safety, be sure to observe them. WARNING and CAUTION are described as follows: Indicates an imminently hazardous situation which will result in death or serious injury if WARNING proper safety procedures and instructions are not adhered to.
  • Page 102 Fan motor voltage measurement point '10 • KX-SM-148 (L63 - L64) Target pwb Pwb voltage measurement point (F1-DS(-)) Fig.1 Voltage Measurement Points Terminal Harness Snubber capacitor Inverter PCB Connection binder Power transistor (Metallic pillar) Installation Method to Power transistor Procedure on tightening harness (snubber capacitor) and power transistor with screw. •...
  • Page 103 '10 • KX-SM-148  Function of Dip switch for contorl (SW3, 4, 5) • SW3 (Function setting) • SW4 (Change demand ratio) Switch Function Switch Function Inspection LED reset Compressor capacity 60% SW3-1 Normal Compressor capacity 0% SW4-5 SW4-6 Forced cooling/heating Compressor capacity 80% SW3-7 Normal...

  • Page 104: Outdoor Unit

    '10 • KX-SM-148 DIP Switch setting list (1) Outdoor unit (a) Control PCB Table 1 Table 2 Table 3 (2) Indoor unit...

  • Page 124: Indoor Unit

    Capacitor for FM CNA～Z Connector Connector for branching controller of heat recovery 5 or 6 wires Th - R1 Th - R2 Th - R3 F1～4 Fuse 3-pipe systems t° t° t° t° Fan motor（with thermostat） 200V Float switch Power source JSL1 Live superlink terminal setting（for spare）...
  • Page 125 Cooling Heating Outdoor unit Service valve External air Thermistor Indoor unit A (Tho-A) Gas piping Heat exchanger Heat exchanger 224: ø19.05 Thermistor (Outlet) 280: ø22.22 4-way switching solenoid High pressure sensor -R3) Thermistor (Heat exchanger) (PSH) Check (ThI-R1) joint Check joint Solinoid valve Low pressure sensor Thermistor (Return air)
  • Page 126 Cooling Heating Outdoor unit Service valve External air Thermistor Gas piping Indoor unit A (Tho-A) ø25.4 Heat exchanger Heat exchanger Thermistor (Outlet) (ThI-R3) 4-way switching solenoid High pressure sensor Thermistor (Heat exchanger) (PSH) Check -R1) joint Check joint Strainer Solinoid valve Low pressure sensor Check valve Thermistor (Return air)

  • Page 127: Application Data

    '10 • KX-SM-148 5. APPLICATION DATA PJF012D016 5.1 Installation of indoor unit...

  • Page 128: Ceiling Cassette-4 Way Type (Fdt)

    '10 • KX-SM-148 (1) Ceiling cassette-4way type (FDT) PJF012D016...
  • Page 129 '10 • KX-SM-148...
  • Page 130 '10 • KX-SM-148...
  • Page 131 '10 • KX-SM-148 PANEL INSTALLATION MANUAL PJF012D003A PJF012D003A Read this manual together with the indoor unit’s installation manual. ⑧ A ⑥ Attaching the panel 1. To avoi 1. Temporary attaching 2. Then h WARNING Lift up the hanger (2 places) on the panel for temporary support. 3.
  • Page 132 '10 • KX-SM-148 ⑧ Attaching a corner panel Press SET button (Fixing of the lo wer limit 1. To avoid unexpected falling of the corner panel, put the strap onto the corner panel’s pin with turning the strap up. position) 2.

  • Page 133: Ceiling Cassette-4 Way Compact Type (Fdtc)

    '10 • KX-SM-148 (2) Ceiling cassette-4way compact type (FDTC) PJA012D786 ① ③ Before installation Preparation before installation l Install correctly according to the installation manual. l If suspension bolt becomes longer, do reinforcement of earthquake resistant. l Confirm the following points: ...
  • Page 134 '10 • KX-SM-148 ④ ⑥ ⑥ Installation of indoor unit (continued) Drain pipe (continued) 6. Make sure to install the indoor unit horizontally. Confirm the Work procedure Drain te levelness of the indoor unit with a level gauge or transparent 1.
  • Page 135 '10 • KX-SM-148 ⑥ ⑧ Drain pipe (continued) Panel installation Drain test l After wiring work finished, install the panel on the indoor unit. l Refer to panel installation manual for details. (see next page) drain l After installation of drain pipe, make sure that drain system work in good condition and no water leakage from joint and drain pan.

  • Page 136: Panel Installation

    '10 • KX-SM-148 PJA012D783 PANEL INSTALLATION MANUAL PJA012D783 Please read this manual together with the indoor unit’s installation manual. WARNING 4 Attaching a corner panel Fasten the wiring to the terminal securely and hold the cable securely so as not �...

  • Page 137: How To Set The Airflow Direction

    '10 • KX-SM-148 PJA012D783 6. Please rotate a hook, put in the slot on the panel, and carry out fixing the panel 7 How to set the airflow direction temporarily. [Figure 4] It is possible to change the movable range of the louver on the air outlet from the wired remote controller. Once the top and bottom position is set, the louver will swing within the range between the top and the bottom when swing operation is chosen.

  • Page 138: Ceiling Cassette-2 Way Type (Fdtw)

    '10 • KX-SM-148 (3) Ceiling cassette-2way type (FDTW) PJB012D230 ①Before installation ③Preparation before installation (continued) ●If placing the unit with the top plate facing up (in the reversed orientation of packaging) is ●Install correctly according to the installation manual. unavoidable, use care so that the area other than supporting member of the unit, will not be ●Confirm the following points: subjected to excessive loads.
  • Page 139 '10 • KX-SM-148 ⑤Refrigerant pipe ⑥Drain pipe (continued) ⑥D Caution 2. Prepare a joint for connecting VP-20 pipe, adhere and connect the joint to the drain hose Drain (the end made of rigid PVC), and adhere and connect VP-20 pipe (prepare on site). ●Use the new refrigerant pipe.
  • Page 140 '10 • KX-SM-148 ⑧Panel installation ⑥Drain pipe (continued) ●Attach the panel on the indoor unit after electrical wiring work. Drain pump operation Work procedure ○In case electrical wiring work finished 1. Using the paper pattern attached as an accessory, check to ensure the unit height and 　Drain pump can be operated by remote controller (wired).

  • Page 141: Ceiling Cassette-1 Way Compact Type (Fdtq)

    '10 • KX-SM-148 (4) Ceiling cassette-1way compact type (FDTQ) PJC012D121...
  • Page 142 '10 • KX-SM-148...
  • Page 143 '10 • KX-SM-148...
  • Page 144 '10 • KX-SM-148 PJC012D118 PJC012D118 PANEL INSTALLATION MANUAL PJC012D118 PANEL INSTALLATION MANUAL Please read this manual together with installation manual of indoor unit. (1) Parts Models : TQ-PSA-15W-E, TQ-PSB-15W-E Mount t Please read this manual together with installation manual of indoor unit. Warning Mount t ● Please perform electrical work after cutting off main power.
  • Page 145 012D118 '10 • KX-SM-148 Mount the panel ① Attach 2 of 4 hanging bolts supplied with the panel on the indoor piping side and its ● diagonal position respectively, and tighten them gently for 5mm. ( marks) Air outlet ② Open the suction grille, hang the panel onto 2 bolts, and secure it temporarily. When securing the panel temporarily, hang the panel onto side bolts as shown in the left figure, then hang onto...
  • Page 146 '10 • KX-SM-148 (2) Parts Models : QR-PNA-14W-ER, QR-PNB-14W-ER PJC012D102...
  • Page 147 '10 • KX-SM-148 Air flow (m /min)
  • Page 148 '10 • KX-SM-148...

  • Page 149: Ceiling Cassette-1 Way Type (Fdts)

    '10 • KX-SM-148 (5) Ceiling cassette-1way type (FDTS) PJC012D016...

  • Page 150: Kx-Sm

    '10 • KX-SM-148...
  • Page 151 '10 • KX-SM-148...

  • Page 152: Duct Connected-High Static Pressure Type (Fdu)

    '10 • KX-SM-148 (6) Duct connected High static pressure type (FDU) PJD012D053...
  • Page 153 '10 • KX-SM-148...
  • Page 154 '10 • KX-SM-148...

  • Page 155: Duct Connected-Low/Middle Static Pressure Type (Fdum)

    '10 • KX-SM-148 (7) Duct connected - Low / Middle static pressure type (FDUM) PJR012D319 ○ ③ ① ● ● 　○ ○ ○ ② ① 　・ ・ ・ ・ ・ ・ ・ ④ ・ ・ ・ ・ ・ ・ ・ ○...
  • Page 156 '10 • KX-SM-148 ⑤Duct Work (continued) ⑥Refrigerant pipe ⑦D 2. P ●When placing the inlet port to carry out suction from the bottom side, use the following Caution procedure to replace the suction duct joint and the bottom plate. ●Use the new refrigerant pipe. ※...
  • Page 157 '10 • KX-SM-148 ⑦Drain pipe (continued) ⑦Drain pipe (continued) 2. Prepare a joint for connecting VP-20 pipe, adhere and connect the joint to the drain hose Drain pump operation (the end made of rigid PVC), and adhere and connect VP-20 pipe (prepare on site). ○In case electrical wiring work finished ※As for drain pipe, apply VP-20 made of rigid PVC which is on the market.

  • Page 158: Duct Connected (Thin)-Low Static Pressure Type (Fdut)

    '10 • KX-SM-148 (8) Duct connected (thin) - Low static pressure type (FDUT) PJM012D032...
  • Page 159 '10 • KX-SM-148...
  • Page 160 '10 • KX-SM-148...

  • Page 161: Duct Connected-Compact And Flexible Type (Fduh)

    '10 • KX-SM-148 (9) Duct connected-Compact and Flexible type (FDUH) PJC012D207...
  • Page 162 '10 • KX-SM-148 Air flow (m /min)
  • Page 163 '10 • KX-SM-148...

  • Page 164: Wall Mounted Type (Fdk)

    '10 • KX-SM-148 (10) Wall mounted type (FDK) PHA012D039...
  • Page 165 '10 • KX-SM-148...
  • Page 166 '10 • KX-SM-148...

  • Page 167: Ceiling Suspended Type (Fde)

    '10 • KX-SM-148 (11) Ceiling suspended type (FDE) PFA012D621B ※ ※ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・...
  • Page 168 '10 • KX-SM-148 ※ ※ ※ ※ ※ ※ ・ ・ ※ ※ ・ ・ ※ ※ ※ ※ ※...
  • Page 169 '10 • KX-SM-148 *1 This function is not able to be set with wireless remote controls or simple remote control (RCH-H3). *2 For setting the swing range of other louvers, return to 1 and proceed same procedure respectively.

  • Page 170: Floor Standing-2 Way Type (Fdfw)

    '10 • KX-SM-148 (12) Floor standing-2 way type (FDFW) PGF012D004...
  • Page 171 '10 • KX-SM-148...
  • Page 172 '10 • KX-SM-148 *1 This function is not able to be set with wireless remote controls or simple remote control (RCH-H3). *2 For setting the swing range of other louvers, return to 1 and proceed same procedure respectively.
  • Page 173 '10 • KX-SM-148 (13) Outdoor air processing unit type (FDU-F) PJD012D059...
  • Page 174 '10 • KX-SM-148...
  • Page 175 '10 • KX-SM-148...

  • Page 176: Electric Wiring Work Instruction

    '10 • KX-SM-148 5.2 Electrlc wiring work instruction PSB012D967 PSB012D922 ELECTRIC WIRING WORK INSTRUCTION ①　 Electrical Wiring Connection (continued) ③　 Electrical wiring work must be performed by an electrician qualified by a local power provider according ●Electrical wiring work must be performed by an electlician an qualified by a to the electrical installation technical standards and interior wiring regulations applicable to the local power provider.
  • Page 177 '10 • KX-SM-148 ③　 Remote Control, Wiring and functions (continued) ④　 Trial operation (continued) Control plural indoor units by a single remote controller Checking operation data ① A remote controller can control plural indoor units (up to 16) Operation data can be checked with remote control unit operation. In above setting, all plural indoor units will operate under same mode and temperature setting.
  • Page 178 '10 • KX-SM-148 ⑤ Function Setting by Remote Controller The functional setting. • The initial function setting for typical using is performed automatically by the indoor unit connected, when remote controller and indoor unit are connected. As long as they are used in a typical manner, there wiil be no need to change the initial settings. If you would like to change the initial setting marked “...

  • Page 179: Initial Settings

    '10 • KX-SM-148 ⑤ Function Setting by Remote Controller (continued) (i) Remote controller function “ ” : Initial settings “ ” : Automatic criterion Function When you use at 50Hz area setting When you use at 50Hz area When you use at 60Hz area Automatical operation is impossible Temperature setting button is not working Mode button is not working...
  • Page 180 '10 • KX-SM-148 ⑤ Function Setting by Remote Controller (continued) (ii) Indoor unit function Stop air-conditioner and press “ ” : Initial settings (SET) + (MODE) buttons at the same time for over three seconds. “ ” : Automatic criterion Indoor unit No.
  • Page 181 '10 • KX-SM-148 　 PJA012D729A Installation manual for wired remote controller 5.3 Instullation manual for wired remote controller (Option parts : RC-E4) Connect the remote cont terminal block. Connect the terminal of r Read together with indoor unit's installation manual. with the terminal of indoo (X and Y are no polarity) WARNING...
  • Page 182 '10 • KX-SM-148 ote controller Connect the remote controller cord to the Sheath Sheath The range of temperature settin Upper Upper terminal block. When shipped, the range of set te Connect the terminal of remote controller (X,Y) Upper case Upper case Board Board Heating : 16 ~ 30˚C (55 ~ 86˚F...
  • Page 183 '10 • KX-SM-148 P J A 0 1 2 D 7 2 9 A Sheath The range of temperature setting Upper When shipped, the range of set temperature differs depending on the operation mode as below. Upper case Board Heating : 16 ~ 30˚C (55 ~ 86˚F) Except heating (cooling, fan, dry, automatic) : 18 ~ 30˚C (62 ~ 86˚F) Upper limit and lower limit of set temperature can be changed with remote controller.
  • Page 184 '10 • KX-SM-148...
  • Page 185 '10 • KX-SM-148 P J A 0 1 2 D 7 2 9 A lly defined as following table. Operation message How to set function nit. Function description: Function No. Stop air-conditioner and press (SET) (MODE) setting description: buttons at the same time for over three seconds, and the r flow setting "FUNCTION SET "...

  • Page 186: Installation Of Outdoor Unit

    '10 • KX-SM-148 5.4 Installation of outdoor unit PCB012D015L KX SERIES INSTALLATION MANUAL Outdoor unit capacity FD C224∼ 335 ◎This installation manual deals with outdoor units and general installation specifications only. For indoor units, please refer to the respective installation manuals supplied with your units.

  • Page 187: Selecting The Installation Location

    '10 • KX-SM-148 Notabilia as a unit designed for R410A Dedicated R410A tools a） Gauge manifold Do not use any refrigerant other than R410A. R410A will rise to pressure about 1.6 times higher than that of a conventional refrigerant. ● b）...

  • Page 188: Refrigerant Piping

    You may incur property damage or personal injure from a fall of the article. Do not perform any repairs or modifications by yourself. Consult the dealer if the unit requires repair. ● Do not step onto the outdoor unit. ● If you repair or modify the unit, it can cause water leaks, electric shocks or fire.
  • Page 189 blowing outlet and the wall.) Fasten with anchor bolts '10 • KX-SM-148 (3) Pipe size selection Branch pipe set for indoor unit side Header set for indoor unit side Outdoor unit Model: HEAD Model: DIS Branch pipe set for indoor unit side Model: DIS Indoor unit y to...
  • Page 190 '10 • KX-SM-148 Legend               ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● Ａ Ｈ Ａ φ φ φ φ φ φ ∼ ∼ φ φ φ...
  • Page 191 '10 • KX-SM-148 ・ （ ） ∼ ∼ （ ） ∼ ∼ （ ） ∼ ∼ （ ） ∼ ∼ ） ∼ ∼   ● ● ● ● ① ＜ ＞ ② ２ ２ ③ ④ ① ② ③ ℃ ④...
  • Page 192 φ φ φ '10 • KX-SM-148 ● ● ● （ ）＝ ＋（ ）＋（ ）＋（ ）＋（ ） ） ● ● ℃ ● ● ● ● ● ● ● ● ●...
  • Page 193 ・ ・ ・ '10 • KX-SM-148    L1・L2・L3 L1・L2・L3・N ∼ Ａ1 ・ Ｂ1 ∼ ∼ ∼ 〈Ⅰ〉 ・・・ ・・・ ∼ ∼ Ａ ・ Ｂ Ａ ・ Ｂ Ａ ・ Ｂ ・ ・ ・ ・・・ X ・ Y X ・ Y X ・...
  • Page 194 '10 • KX-SM-148 Ⅱ ○ △△ ○△△ ○△△ ● ① ② ○ △△ × ○△△ ● ● ● Ａ A1 ・ B1 A2 ・ B2 A1 ・ B1 A2 ・ B2 A1 ・ B1 A2 ・ B2 Ａ   Ｂ Ａ...
  • Page 195 '10 • KX-SM-148 ● ※ ※ ※ ※ A1 ・ B1 A2 ・ B2 A1 ・ B1 A2 ・ B2 A1 ・ B1 A2 ・ B2 A1 ・ B1 A2 ・ B2 A1 ・ B1 A2 ・ B2 A1 ・ B1 A2 ・ B2 Ａ...
  • Page 196 ｍｍ '10 • KX-SM-148 ① ② ③ ① ② ③ ④ ① ② ③ ④ ・ ⑤ ・ ⑥ ・ ⑦ ・ ・ ・ ・ ⑧ ・ ○○ ⑨ ⑩ ⑧ ⑪...
  • Page 197 ● '10 • KX-SM-148 ② ④ ー        ー ー ① ④        ー ② ー ー ー         ー ー ① ）        ー ③ ー ー ⑨ ⑤ ⑥ ｢ ｣ ー        ー ｢ ｣ ⑦ ｢ ｣        ー ー ｢ ｣ ⑩...
  • Page 198 '10 • KX-SM-148 ● ① ▼ ▼ ② ⇔ ▲ ③ ▼   → →   ▲」 ④ ⇔   ▲ ▼ ⇔   ⇔ ・・・ ⇔ ▼ ⑤ ⑥ → →   ▲ ⑦ ⇔   ▲ ▼ ⇔   ⇔ ・・・...
  • Page 199 '10 • KX-SM-148 ●             ・ ・ ・ ・ ・ ・ ・...
  • Page 200 '10 • KX-SM-148 ○○ ○○ ○○ ー ー ー ー ー ー ー ー ー ー ー ー ー ー ー ー ー ∼...
  • Page 201 '10 • KX-SM-148 Ω ○○○○ ○ ○ ○ ▲ → → ▼ ▼ ○ ▼ ○ ● ●...

  • Page 202: Method For Connecting The Accessory Pipe

    Method for connecting the accessory pipe About brazing Be sure to use the accessory pipe to connect the operation valve on the Be sure to braze while supplying nitrogen gas. gas side with the field pipe. �If no nitrogen gas is supplled, a large amount of impurity (oxidized film) will be generated, 1Referring to Table 1 and Table 2, prepare the straight pipe and the elbow in the field, which are used in the construction examples A-D applicable to the connecting direction.

  • Page 203: Check Operation Procedure

    '10 • KX-SM-148 5.6 Check operation procedure (1) Check operation The following ① – ③ can be checked automatically with this operation. ① Checking of operation valves opened/closed. Checks to see if operation valves are opened. ② Checking of mismatch on wiring or piping. Checks to see if refrigerant piping or signal wiring between indoor and outdoor units in the same refrigerant system are connected properly.
  • Page 204 '10 • KX-SM-148 (2) Flow of the check operation Check operation is performed as follows. Start Preliminary check Note (1) Auto checking Note (2) Judgment of checked result Note (3) Note (1) For preliminary check method, refer to “(3) Confirmation before check operation”. (2) For details of check operation, refer to “(4) Check operation procedure”.
  • Page 205 '10 • KX-SM-148 (3) Confirmation before check operation ・Confirm the installation has been completed properly by hearing, actual inspection or other method. ・This preliminary confirmation is indispensable to prevent troubles during or after check operation. ・Check operation can be performed only when the following conditions (1) – (8) are established. ・Check the following contents listed in the table with 7-segment display and MentePC.
  • Page 206 '10 • KX-SM-148 (4) Check operation procedure Operation status Meaning of Flow Work Remarks (Displayed on 7-segment) 7-segment display Preliminary Check in advance as per “(3) Don’t operate any outdoors unit in check Confirmation before check other refrigerant systems during operation”.
  • Page 207 '10 • KX-SM-148 (5) Measures to be taken after check operation When any display other than “CHO-End” is displayed after completing the judgment of check operation, the meanings of each display are shown as follows. After checking the contents of inspection and repairing nonconforming items, perform check operation again. Code Data Meaning of display...
  • Page 208 '10 • KX-SM-148 Code Data Meaning of display Contents of Inspection display display It may be liquid flooding. Refrigerant piping or signal cables may not be connected properly between indoor and outdoor units. *1 (See next page.) Power switch may be turned off on some indoor units. Check if power is supplied to all indoor units.
  • Page 209 '10 • KX-SM-148 Piping Wiring ・ Wrong wiring ・Normal Outdoor unit Indoor unit Outdoor unit Indoor unit Indoor unit Indoor unit Outdoor unit Indoor unit Outdoor unit Indoor unit Indoor unit Indoor unit *2 (If the connector comes off by a weak pull, it’s no good. If not come off, It’s OK) The connector of indoor heat exchanger temperature thermistor.
  • Page 210 '10 • KX-SM-148...

  • Page 211: Instructions For Installing The Branch Pipe Set

    '10 • KX-SM-148 5.7 Instructions for installing the branch pipe set (option) PSB012D855B P − 9 P−9 P−9 DIS-540-2 P − 15 P−15 P−15...
  • Page 212 '10 • KX-SM-148 (model type DIS) (model type HEAD)
  • Page 213 '10 • KX-SM-148...
  • Page 214 '10 • KX-SM-148...
  • Page 215 '10 • KX-SM-148 6. CORROSION PROTECTION TREATMENT SERIES KX6 outdoor series are available with special coating Production by order applied for not only sheet metals but also small parts in order to prevent salt corrosion caused by sea breeze in area along coast line (Within approximately 500m from Sea breeze coast line).
  • Page 216 VRF INVERTER MULTI-SYSTEM AIR CONDITIONERS Air-Conditioning & Refrigeration Systems Headquarters 16-5, 2-chome, Kounan, Minato-ku, Tokyo, 108-8215, Japan Fax : (03) 6716-5926 Because of our policy of continuous improvement, we reserve the right to make changes in all specifications without notice. Copyright MITSUBISHI HEAVY INDUSTRIES.LTD...

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