Mitsubishi Heavy Industries FDFL71KXE6F Technical Manual
  1. Manuals
  2. Brands
  3. Mitsubishi Heavy Industries Manuals
  4. Air Conditioner
  5. FDFL71KXE6F
  6. Technical manual
Mitsubishi Heavy Industries FDFL71KXE6F Technical Manual

Mitsubishi Heavy Industries FDFL71KXE6F Technical Manual

Vrf inverter multi-system air conditioners
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
TECHNICAL MANUAL
VRF INVERTER MULTI-SYSTEM
AIR-CONDITIONERS
(INDOOR UNIT)
Floor standing (with casing) type
FDFL71KXE6F
Floor standing (without casing) type
FDFU28KXE6F
45KXE6F
56KXE6F
71KXE6F
Note:
•
(1) This document describes the indoor units with service code /F (with motion sensor system
function).
Manual No.'20 • KX-T-348
updated December 14, 2020

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the FDFL71KXE6F and is the answer not in the manual?

Questions and answers

Related Manuals for Mitsubishi Heavy Industries FDFL71KXE6F

Summary of Contents for Mitsubishi Heavy Industries FDFL71KXE6F

  • Page 1 Manual No.'20 • KX-T-348 updated December 14, 2020 TECHNICAL MANUAL VRF INVERTER MULTI-SYSTEM AIR-CONDITIONERS (INDOOR UNIT) Floor standing (with casing) type FDFL71KXE6F Floor standing (without casing) type FDFU28KXE6F 45KXE6F 56KXE6F 71KXE6F Note: • (1) This document describes the indoor units with service code /F (with motion sensor system...
  • Page 2 '20 • KX-T-348 PREFACE Combination table for KX4 series and KX6 series ( ) Date of launching in the market Indoor unit Same or Connectable Same series Same series Same series Mixed series Mixed series Mixed series Mixed series Same series Mixed series remote control RC-E1...

  • Page 3: Table Of Contents

    '20 • KX-T-348 CONTENTS 1. INFORMATION ....................2. SPECIFICATIONS ..................3. EXTERIOR DIMENSIONS ................3.1 Indoor unit ........................3.2 Remote control (Option parts) ................4. ELECTRICAL WIRING .................. 5. NOISE LEVEL ......................6. TEMPERATURE AND VELOCITY DISTRIBUTION ........

  • Page 4: Information

    '20 • KX-T-348 1. INFORMATION Model description Example: FDFL 71 KX Series No. Application power source...See the specifications Multi KX series Nominal capacity (Nominal cooling capacity : 7.1kW) Model name Indoor unit : FDFL, FDFU (1) Table of remote control (Option) (1) Table of remote control (Option) (a) Wired remote control Model...

  • Page 5: Specifications

    '20 • KX-T-348 2. SPECIFICATIONS (1) Floor standing (with casing) type (FDFL) Model FDFL71KXE6F PGD000Z155...
  • Page 6 '20 • KX-T-348 (2) Floor standing (without casing) type (FDFU) Models FDFU28KXE6F, 45KXE6F, 56KXE6F, 71KXE6F PGD000Z157...

  • Page 7: Exterior Dimensions

    '20 • KX-T-348 3. EXTERIOR DIMENSIONS 3.1 Indoor unit (1) Floor standing (with casing) type (FDFL) Model FDFL71KXE6F PGD000Z052...
  • Page 8 '20 • KX-T-348 (2) Floor standing (with casing) type (FDFU) Models FDFU28KXE6F, 45KXE6F, 56KXE6F PGD000Z056...
  • Page 9 '20 • KX-T-348 Model FDFU71KXE6F PGD000Z057...

  • Page 10: Remote Control (Option Parts)

    '20 • KX-T-348 3.2 Remote control (Option parts) (1) Wired remote control Model RC-EX3A Installation space Dimensions (Viewed from front) 30mm 30mm Wiring 配線 30mm 30mm 30mm 30mm Fixing holes 固定穴 R/C temperature sensor Secure minimum spaces for disassembling the case. Upper left and Upper right sides ……30mm or more Bottom side…120mm or more...
  • Page 11 '20 • KX-T-348 Model RC-E5 Wiring outlet Cut off the upper thin part of remote control lower case with a nipper or knife, Exposed mounting and grind burrs with a file etc. In case of pulling out In case of pulling out from upper left from center 0.3mm...
  • Page 12 '20 • KX-T-348 (2) Wireless remote control (RCN-E2) This remote control is an accessory of the wireless remote control kit. (Refer to 11.1 Wireless kit) Unit: mm...

  • Page 13: Electrical Wiring

    '20 • KX-T-348 4. ELECTRICAL WIRING (1) Floor standing (with casing) type (FDFL) Model FDFL71KXE6F PGD000Z156...
  • Page 14 '20 • KX-T-348 (2) Floor standing (without casing) type (FDFU) All models PGD000Z158...

  • Page 15: Noise Level

    Measured based on JIS B 8616 Indoor unit Mike (front & at low point) Mike position as right Model FDFU28KXE6F Models FDFL71KXE6F FDFU45, 56, 71KXE6F Noise level 41 dB (A) at HIGH Noise level 43 dB (A) at HIGH 38 dB (A) at MEDIUM...

  • Page 16: Temperature And Velocity Distribution

    These figures represent the typical main range of temperature and velocity distribution at the center of air outlet within the published conditions. In the actual installation, they may differ from the typical figures under the influence of air temperature conditions, ceiling height, operation conditions and obstacles. (1) Floor standing (with casing) type (FDFL) Model FDFL71KXE6F 18 21 1.5 1.0 0.5...

  • Page 17: Capacity Tables

    Otherwise protection control by low pressure will be activated much more frequently and it will cause insufficient capacity or breakdown of the compressor in worst case. 1.7.1 Capacity tables (1) Floor standing (with casing) type (FDFL) (1) Twin type FDFL71KXE6F Cooling mode Heating mode Indoor air temperature SRK100VNXPZJX...
  • Page 18 '20 • KX-T-348 (2) Floor standing (without casing) type (FDFU) FDFU28KXE6F Cooling mode Heating mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature temperature temperature (ºCDB） Indoor air temperature Outdoor air Outdoor air Indoor air temperature temperature temperature (ºCDB）...
  • Page 19 '20 • KX-T-348 FDFU45KXE6F Cooling mode Heating mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature temperature temperature (ºCDB） Indoor air temperature Outdoor air Outdoor air Indoor air temperature temperature temperature (ºCDB） Indoor air temperature Outdoor air Outdoor air Indoor air temperature temperature temperature...
  • Page 20 '20 • KX-T-348 FDFU56KXE6F Heating mode Cooling mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature temperature temperature (ºCDB） Indoor air temperature Outdoor air Outdoor air Indoor air temperature temperature temperature (ºCDB） Indoor air temperature Outdoor air Outdoor air Indoor air temperature temperature temperature...
  • Page 21 '20 • KX-T-348 FDFU71KXE6F Heating mode Cooling mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature temperature temperature (ºCDB） Indoor air temperature Outdoor air Outdoor air Indoor air temperature temperature temperature (ºCDB） Indoor air temperature Outdoor air Outdoor air Indoor air temperature temperature temperature...

  • Page 22: Application Data

    '20 • KX-T-348 8. APPLICATION DATA ① B PGD012D014 INSTALLATION MANUAL FOR FLOOR STANDING INSTALLATION MANUAL FOR FLOOR STANDING PGD012D005 8.1 Installation of indoor unit 202001 (WITH CASING)- FDFL PGD012D014 (WITH CASING) -FDFL  Instal (1) Floor standing (with casing) type (FDFL) ...
  • Page 23 '20 • KX-T-348 ① Before installation ③ Preparation before installation D014 Before installation Preparation before installation 202001  Install correctly according to the installation manual. Position of bolts for floor bracket and for wall installation bolts  Confirm the following points: ...
  • Page 24 '20 • KX-T-348 ④ Installation of indoor unit ⑤ Refrigerant piping ⑥ D Refrigerant piping Installation of indoor unit Choose the floor bracket bolt location or the wall installation bolt location, and the location of the pipe Caution Caution Cautio hole.
  • Page 25 '20 • KX-T-348 ⑥ Drain pipe ⑧ Check list after installation Drain pipe Remote Controller Caution Caution ●Check the following items after all installation work completed. duct. Insert the attached drain hose to the indoor unit completely, tighten the drain hose with the attached ...
  • Page 26 '20 • KX-T-348 ① B PGD012D015 INSTALLATION MANUAL FOR FLOOR STANDING INSTALLATION MANUAL FOR FLOOR STANDING PGD012D006 202001 (WITHOUT CASING)- FDFU PGD012D015  Instal (WITHOUT CASING) -FDFU (2) Floor standing (without casing) type (FDFU)  Confir  Un This manual is for the installation of an indoor unit. This manual is for the installation of an indoor unit.
  • Page 27 '20 • KX-T-348 ① Before installation ③ Preparation before installation D015 Before installation Preparation before installation 202001  Install correctly according to the installation manual. Position of bolts for floor bracket and for wall installation bolts  Confirm the following points: ...
  • Page 28 '20 • KX-T-348 ④ Installation of indoor unit ⑤ Refrigerant piping ⑤ R Installation of indoor unit Installation of indoor unit Refrigerant piping Refrigerant piping Choose the floor bracket bolt location or the wall installation bolt location, and the location of the pipe Choose the floor bracket bolt location or the wall installation bolt location, and the location of the pipe Caution Caution...
  • Page 29 '20 • KX-T-348 ⑤ Refrigerant piping (continued) ⑦ Wiring-out position and wiring connection (continued) Drain pipe Drain pipe Check list after installation Check list after installation ●Check the following items after all installation work completed. ●Check the following items after all installation work completed. Caution Caution Expansion...

  • Page 30: Electric Wiring Work Instruction

    '20 • KX-T-348 8.2 Electric wiring work instruction PSC012D118 ① Electrical wiring work must be performed by an electrician qualified by a local power provider according to For th the electrical installation technical standards and interior wiring regulations applicable to the installation site. ①...
  • Page 31 '20 • KX-T-348 AIR CON NO D118 ① Electrical Wiring Connection (continued) ③④ Operation and confirmation from remote control For the rated sensitivity current of leakage breaker, refer to the following equation and judgment method. Operation from the eco touch remote Operation from the standard remote AIR CON NO Item...
  • Page 32 '20 • KX-T-348 ⑥ Operation and setting from remote control ⑥ Op <Availability of setting/operation on standard remote controls> <Note of “eco-Touch Remote Control”> ○：Nearly same function setting and operations are possible. Blank column: Standard remote controls have not A : Refer to the instruction manual for RC-EX series C : Loading a utility software vie Internet Settin △：Similar function setting and opperations are possible.
  • Page 33 '20 • KX-T-348 ⑥ Operation and setting from remote control (continued) RC-EX RC-E Setting ＆ display item Description series series Temp increment setting The temp increment setting can be changed by 0.5˚C or 1.0˚C. Set temp display Ways of displaying setting temperatures can be selected. ries 2 Administrator settings R/C display setting...

  • Page 34: Installation Of Wired Remote Control (Option Parts)

    '20 • KX-T-348 8.3 Installation of wired remote control (Option parts) PJZ012A171 (1) Model RC-EX3A 　 1 . Safety precautions ● s i h l a u y l l t r a g n i a t s t a l l n o i a t s t l l...
  • Page 35 '20 • KX-T-348 WARNING Do not install the unit in appropriate environment or where inflammable gas could generate, flow in, accumulate or leak. t f I s i t c a l s n i l i o , t s i v l o , r o corrosive gas (ammonium, sulfuric compound, acid, etc) or where acidic or alkaline...
  • Page 36 '20 • KX-T-348 CAUTION Do not install the remote control at following places. i t a r t n . l o ・Where it is exposed to direct sunlight ・Where the ambient temperature becomes 0 ° C or below, or 40 ° C or above ・...
  • Page 37 '20 • KX-T-348 　 2 . Accessories & Prepare on site Following parts are provided. Accessories R/C main unit, wood screw (φ3.5 x 16) 2 pcs., Quick reference Following parts are arranged at site. Prepare them according to the respective installation procedures. When the cable length is longer than 100 m, Item name Q’ty...
  • Page 38 '20 • KX-T-348 　 4 . Installation procedure Perform installation and wiring work for the remote control according to the PCB side (Viewed from rear) following procedure. Dimensions (Viewed from front) Fixing holes 固定穴 センサー 端子 Sensor USB port Terminal block To disassemble the R/C case into the upper and lower pieces after assembling them once ess at the lower part of...
  • Page 39 ブッ シング パテで シール する こ と '20 • KX-T-348 リ モコ ン配線 ③ r i w o r f s l a s l a t i n wires (X, Y) have no polarity. Fix wires such that the wires will run around the terminal screws on the top case of R/C.
  • Page 40 '20 • KX-T-348 　 5 . Main/Sub setting when more than one remote control are used ○: operable ×: not operable Up to two units of R/C can be used R/C operations Main Sub R/C operations Main Sub Service Installation Installation date ○...
  • Page 41 '20 • KX-T-348 PJA012D730 Installation manual for wired remote controller (2) Model RC-E5 Connect the remote cont terminal block. Connect the terminal of r Read together with indoor unit's installation manual. with the terminal of indoo WARNING (X and Y are no polarity) Wiring route is as shown Fasten the wiring to the terminal securely and hold the cable securely so as not to apply unexpected stress on the depending on the pulling...
  • Page 42 '20 • KX-T-348 ote controller Connect the remote control cord to the Sheath Sheath The range of temperature settin terminal block. When shipped, the range of set te Connect the terminal of remote control (X,Y) Upper case Upper case Board Board Heating : 16 ~ 30˚C (55 ~ 86˚F with the terminal of indoor unit (X,Y).
  • Page 43 '20 • KX-T-348 PJA012D730 Sheath The range of temperature setting 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 control.
  • Page 44 '20 • KX-T-348 The functional setting The initial function setting for typical using is performed automatically by the indoor unit connected, when remote Note 1: The initial setting marked “ ” is decided by connected indoor and outdoor unit, and is automatically defined as following table. control and indoor unit are connected.
  • Page 45 '20 • KX-T-348 PJA012D730 omatically defined as following table. Operation message How to set function ndoor unit. Function description: Function No. Stop air-conditioner and press (SET) (MODE) setting description: " mode buttons at the same time for over three seconds, and the ep of air flow setting "FUNCTION SET "...

  • Page 46: Outline Of Operation Control By Mycrocomputer

    '16 • PAC-T-251 '20 • KX-T-348 1.10 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 9. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 1.10.1 Remote control 9.1 Remote control (Option parts) (1) Wired remote control Wired remote control Model RC-EX3A Model RC-EX3A ⑤ LCD (with backlight) ③...
  • Page 47 '20 • KX-T-348 '16 • PAC-T-251 Wired remote control Model RC-E5 The figure below shows the remote control 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 Characters displayed with dots in the liquid crystal display area are abbreviated.
  • Page 48 '16 • PAC-T-251 '20 • KX-T-348 Wireless remote control (2) Wireless remote control Models RCN-E2 Indication section ① OPERATION MODE display Indicates selected operation mode. SET TEMP display Indicates set temperature. SLEEP TIMER time display Indicates the amount of time remaining on the sleep timer. ①...

  • Page 49: Operation Control Function By The Wired Remote Control

    '16 • PAC-T-251 '20 • KX-T-348 1.10.2 Operation control function by the wired remote control 9.2 Operation control function by the wired remote control ●Model RC-EX3A (1) Switching sequence of the operation mode switches of remote control (1) Switching sequence of the operation mode switches of remote control (a) Tap the change operation mode button on the TOP screen.
  • Page 50 '16 • PAC-T-251 '20 • KX-T-348 ●Content memorized with the power failure compensation are as follows. Note(1) Items (f) and (g) are memorized regardless whether the power failure compensation is effective or not while the setting of silent mode is cancelled regardless whether the power failure compensation is effective or not.
  • Page 51 '20 • KX-T-348 Model RC-E5 (1) Switching sequence of the operation mode switches of remote control COOL HEAT AUTO CPU reset This functions when “CHECK” and “ESP” buttons on the remote control are pressed simultaneously. Operation is same as that of the power source reset. Power failure compensation function (Electric power source failure) •...

  • Page 52: Operation Control Function By The Indoor Control

    '16 • PAC-T-251 '20 • KX-T-348 11.3 Operation control function by the indoor control 9.3 Operation control function by the indoor control (1) Auto operation (Heat recovery 3-pipe combination systems only) (1) Auto operation (Heat recovery 3-pipe combination systems only) (a) If “Auto”...
  • Page 53 '16 • PAC-T-251 '20 • KX-T-348 (ii) Regardless of the setting temperature, the cooling or heating operation mode is judged according to the "Judgment based on Room temperature/Cooling or Heating and Outdoor temperature/Cooling or Heating". 1) In case of "Room temperature/Cooling < Indoor return air temperature" and "Outdoor temperature/Cooling < Outdoor air tem perature"...
  • Page 54 '16 • PAC-T-251 '20 • KX-T-348 (4) Timer operation RC-EX3A Sleep timer Set the time from the start to stop of operation. The time can be selected in the range from 30 to 240 minutes (in the unit of 10-minute). Note (1) Enable the “Sleep timer”...
  • Page 55 '20 • KX-T-348 '16 • PAC-T-251 (5) Hot start (Cold draft prevention at heating) (a) Operating conditions When either one of following conditions is satisfied, the hot start control is performed. (i) From stop to heating operation (ii) From cooling to heating operation (iii) From heating thermostat OFF to ON (iv) After completing the defrost operation (only on units with thermostat ON) (b) Contents of operation...
  • Page 56 '20 • KX-T-348 '16 • PAC-T-251 (7) Thermostat operation (a) Cooling (i) Thermostat is operated with the room temperature control. (ii) Thermostat is turned ON or OFF relative to the set room temperature as shown below. Thermostat ON Temperature drop Thermostat OFF Temperature rise Setting room temperature...
  • Page 57 '20 • KX-T-348 '16 • PAC-T-251 '16 • PAC-T-251 (d) Fan control during cooling thermostat OFF (d) Fan control during cooling thermostat OFF (i) Following fan controls during the cooling thermostat OFF can be selected with the indoor function setting of the wired (i) Following fan controls during the cooling thermostat OFF can be selected with the indoor function setting of the wired remote control.
  • Page 58 '16 • PAC-T-251 '20 • KX-T-348 Operation check mode There is no communication with the outdoor unit but it allows performing operation in respective modes by operating the remote control. (10) Operation check/drain pump test run operation mode (d) Drain pump test run mode (Except FDK) (a) If the power is turned on by the DIP switch (SW7-1) on the indoor unit control PCB when electric power source is supplied, it As the drain pump test run is established, the drain pump only operates and during the operation protective functions by enters the mode of operation check/drain pump test run.
  • Page 59 '20 • KX-T-348 (b) Display to the remote control (i) Central or each remote control basis, heating preparation: the smallest unit No. among the operating units in the remote mode (or the center mode unless the remote mode is available) is displayed. (ii) Inspection display, filter sign: Any of unit that starts initially is displayed.
  • Page 60 White Blue '20 • KX-T-348 ■ Priority order for combinations of CnT and CnTA input. ■ Priority order for combinations of CnT and CnZ input. CnTA ① Operation ② Operation ③ Operation ④ Operation ⑤ Cooling/heating ⑥ Cooling/heating ⑦ Emergency ①...
  • Page 61 '20 • KX-T-348 (i) In case of “Level input” setting (Factory default) Input signal to CnT-6 or CnZ is OFF→ON …… unit ON Input signal to CnT-6 or CnZis ON→OFF …… unit OFF Operation is not inverted. CnT-6 or CnZ input CnT-6 or CnZ input Unit A Unit A...
  • Page 62 ① When card key switch is ON (Operation permission), the unit starts operation in conjunction with ON signal. and also start/stop operation of the unit from the wired remote control becomes available. ② When card key switch is OFF (Operation prohibition), the unit stops operation in conjunction with OFF signal, and '20 •...
  • Page 63 prohibition prohibition setting Operation Operation permission Operation permission/ permission Operation( ) prohibition zone prohibition '20 • KX-T-348 ( ※ ) Operation prohibition zone is determined by the OR judgment between CnT operation prohibition zone and CnZ '16 • PAC-T-251 operation prohibition zone. (21) Temporary stop input (18) Temporary stop input In case of CnT ③...
  • Page 64 '16 • PAC-T-251 '20 • KX-T-348 (c) If the cooling/heating selection signal is given by the external input, the operation mode is transmitted to the remote control. ■ Selection of cooling/heating external input function External input External input Operation selection method External input (CnT or CnZ)
  • Page 65 '20 • KX-T-348 (23) Branching control (Heat recovery 3-pipe combination systems only) (a) New control with new branching control (New Superlink control) Control by means of CnT2 (The compressor does not stop at the switching of heating/cooling.) CnT outputs – XR2: Heating output, XR3: Compressor ON thermostat output (b) Old control with new branching control (Old Superlink control) Control by means of CnT2 (The compressor stops at the switching of heating/cooling.) (c) Control of the branching control when the heating/cooling is switched with the CnT2 output...
  • Page 66 '20 • KX-T-348 (29) Energy-saving operation (RC-EX3A only) (26) Energy-saving operation (RC-EX3A only) It operates with the setting temperature fixed at 28°C for cooling, 22°C for heating or 25°C for auto. When fan control in cooling/ heating thermo-OFF setting is “Set fan speed”, fan speed during thermo-OFF is changed to “Low”. (Maximum capacity is restricted at 80%.) (30) Warm-up control (RC-EX3A only) (27) Warm-up control (RC-EX3A only)
  • Page 67 '20 • KX-T-348 '16 • PAC-T-251 (37) Peak-cut timer (RC-EX3A only) (34) Peak-cut timer (RC-EX3A only) Power consumption can be reduced by restricting the maximum capacity. Set the [Start time], the [End time] and the capacity limit % (Peak-cut %). ・...
  • Page 68 '20 • KX-T-348 2. Setting details Number Button Function setting indicator Infrared sensor setting (Motion sensor setting) : Disable SILENT Infrared sensor setting (Motion sensor setting) : Enable Infrared sensor control (Motion sensor control) : Disable Infrared sensor control (Motion sensor control) : Power control only HI POWER Infrared sensor control (Motion sensor control) : Auto OFF only Infrared sensor control (Motion sensor control) : Power control and Auto OFF...

  • Page 69: System Troubleshooting Procedure

    '20 • KX-T-348 10. SYSTEM TROUBLESHOOTING PROCEDURE 10.1 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 70: Contents Of Troubleshooting

    '20 • KX-T-348 '14 • KX-T-222 10.2 Contents of troubleshooting 9.2 Contents of troubleshooting (1) List of inspection displays (Indoor units) (a) List of inspection displays (indoor units) Remote control Name of inspection Classification Page error code None Operates but does not cool System error System error None...
  • Page 71 '20 • KX-T-348 (2) Troubleshooting Green Error code Content Keeps flashing Stays OFF None Indoor Operates but does not cool Remote control: 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.
  • Page 72 '20 • KX-T-348 Green Content Error code Keeps flashing Stays OFF Indoor None Operates but does not heat Remote control: 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.
  • Page 73 '20 • KX-T-348 Green Content Error code – – Indoor None Excessive noise/vibration (1/3) Remote control: – – 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 or soon after stopping...
  • Page 74 '20 • KX-T-348 Green Content Error code – – Indoor None Excessive noise/vibration (2/3) Remote control: – – Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure From previous page Rearrange the piping to Are the pipes avoid contact with the contacting with the casing.
  • Page 75 '20 • KX-T-348 Green Content Error code – – Indoor None Excessive noise/vibration (3/3) Remote control: – – Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure From previous page If insufficient cooling/ [Adjustment heating problem happens during commissioning] due to anomalous operating Does noise/vibration occur when the conditions at cooling /...
  • Page 76 '20 • KX-T-348 Green Error code Content Power source system anomaly Stays OFF Stays OFF Indoor Remote control: None (Power source to indoor unit PCB) Stays OFF 2-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure AC 220-240V detected between L-N on the outdoor terminal block?
  • Page 77 '20 • KX-T-348 Green Error code Content Power source system error Keeps lighting Stays OFF Indoor Remote control: None (Power source to remote control) Keeps lighting 2-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Isn't there any Correct it.
  • Page 78 '20 • KX-T-348 Green Content Error code Keeps flashing Stays OFF Indoor WAIT Remote control: WAIT 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 control for more than 2 minutes is kept on WAIT...
  • Page 79 '20 • KX-T-348 Green Content Error code Keeps flashing Stays OFF Indoor Remote control: WAIT WAIT 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.) there any short-circuit between phases of noise...
  • Page 80 '20 • KX-T-348 Green Content Error code Keeps flashing Stays OFF Indoor Remote control: WAIT WAIT Keeps flashing Keeps flashing Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (No display on the remote control after power ON) No display on the remote control after power ON.
  • Page 81 '20 • KX-T-348 Green Content Error code Keeps flashing Stays OFF Indoor Remote control: WAIT WAIT 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 control for more than 2 minutes is kept on WAIT...
  • Page 82 '20 • KX-T-348 Green Content Error code Stays OFF Stays OFF Indoor Remote control: WAIT WAIT Stays OFF Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (In case that LED on outdoor unit control PCB stays OFF) In case that LED on outdoor unit control PCB stays OFF...
  • Page 83 '20 • KX-T-348 Green Content Error code Stays OFF Stays OFF Indoor Remote control: WAIT WAIT 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) From previous page.
  • Page 84 '20 • KX-T-348 Green Content Error code Stays OFF Stays OFF Indoor Remote control: [No display] [No display] Stays OFF Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (No display on the remote control after power ON) No display on the remote control after power ON Is DC10V...
  • Page 85 '20 • KX-T-348 Green Content Error code Remote control Keeps flashing Stays OFF Indoor Remote control: communication error 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 source reset? noise.
  • Page 86 '20 • KX-T-348 Green Content Error code Keeps flashing Keeps flashing Indoor Duplicated indoor unit address Remote control: 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 to 128 units? connected units.
  • Page 87 '20 • KX-T-348 Green Content Error code Keeps flashing 2-time flash Indoor E3/5 Outdoor unit signal line error Remote control: 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 88 '20 • KX-T-348 Green Content Error code Keeps flashing *See below Indoor Communication error during operation Remote control: 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.
  • Page 89 '20 • KX-T-348 Green Indoor heat exchanger Content Error code Keeps flashing 1-time flash Indoor Remote control: temperature sensor anomaly (Thi-R) Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure the connector of Insert the connector temperature sensor connected properly ? securely.
  • Page 90 '20 • KX-T-348 Green Indoor return air Content Error code Keeps flashing 1-time flash Indoor Remote control: temperature sensor anomaly (Thi-A) Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure the connector of Insert the connector temperature sensor connected securely.
  • Page 91 '20 • KX-T-348 Green Content Error code Excessive number of indoor units (more than 17 units) Keeps flashing Stays OFF Indoor Remote control: by controlling one remote control Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Are more...
  • Page 92 '20 • KX-T-348 Green Green Error code Content Content Error code Address setting error between Address setting error between Keeps flashing Stays OFF Indoor Remote control: Remote control: master and slave indoor units master and slave indoor units Indoor Keeps flashing Keeps flashing Keeps flashing Stays OFF Outdoor 5.
  • Page 93 '20 • KX-T-348 Green Content Error code Address setting error Keeps flashing Keeps flashing Indoor Remote control: by mixed setting method Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the automatic setting and Review address setting.
  • Page 94 '20 • KX-T-348 Green Content Error code Address setting error of Keeps flashing 1-ime flash Indoor Remote control: master and slave indoor units Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the address setting for the master indoor Correct the address setting of unit correct?
  • Page 95 '20 • KX-T-348 Green Content Error code Indoor unit operation check, Keeps flashing 1-time flash Indoor Remote control: drain pump motor check mode anomaly Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure E19 occurs when the power ON Is SW7-1 Indoor control PCB...
  • Page 96 '20 • KX-T-348 Green Content Error code Remote control Keeps flashing Stays OFF Indoor Remote control: temperature sensor anomaly (Thc) Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure the connector of Insert the connector temperature sensor connected securely.
  • Page 97 '20 • KX-T-348 Green Content Error code Indoor Remote control: Keeps flashing Stays OFF Emergency stop 7-segment display: Outdoor Keeps flashing 1-time flash 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Check and save the data of operating conditions. Save data for 30 minutes before stopping in Mente PC.

  • Page 98: Instruction Of How To Replace Pcb

    '20 • KX-T-348 10.3 Instruction of how to replace PCB PSB012D975M • FDFL, FDFU series SAFETY PRECAUTIONS Read the "SAFETY PRECAUTIONS" carefully first of all and then strictly follow it during the replacement in order to protect yourself. ● The precautionary items mentioned below are distinguished into two levels, WARNING and CAUTION. ●...

  • Page 99: Indoor Pcb Setting

    '20 • KX-T-348 10.4 Indoor PCB setting 10.4 Indoor PCB setting Code Input Default setting Remark Indoor unit address No.(Order of 10) Indoor unit address No.(Order of 1) Outdoor unit address No.(Order of 10) Outdoor unit address No.(Order of 1) SW5-1 Superlink selection Automatic*/Previous SL...

  • Page 100: Option Parts

    '20 • KX-T-348 11. OPTION PARTS 11.1 Wireless kit (RCN-KIT4-E2) (1) Specification PJZ000Z323 Indoor unit terminal block Ｘ Ｙ White Black 0.3mm2･2-core O.D.φ5.0mm (Accessory 3m) REMOTE CONTROL SIGNAL RECEIVING SECTION Receives a signal from the remote control. CHECK MODE INDICATOR When an irregularity occurs, the indicator indicates the status of malfunction by symbol.
  • Page 101 '20 • KX-T-348 Installation precautions Do not install it on the following placesin order to avoid malfunction. (1) Places exposed to direct sunlight (2) Places near heat devices (3) High humidity places (4) Hot surface or cold surface enough to generate condensation (5) Places exposed to oil mist or steam directly (6) Uneven surface (7) Places affected by the direct airflow of the AC unit...
  • Page 102 PJZ012D112 '20 • KX-T-348 (2) Installation manual PJZ012D112 Safety precautions ●Please read this manual carefully before starting installation work to install the unit properly. Safety precautions Every one of the followings is important information to be observed strictly. WARNING Failure to follow these instructions properly may result in serious consequences ●Please read this manual carefully before starting installation work to install the unit properly.
  • Page 103 '20 • KX-T-348 WARNING ● Do not wash the unit with water. It could cause electric shocks, fire, or break-down. ● Use the specified cables for wiring, and connect them securely with care to protect electronic parts from external forces. Improper connections or fixing could cause heat generation, fire, etc.
  • Page 104 mark. It could cause electric shocks. '20 • KX-T-348 ② ③ Preparation before installation (continued) To change setting Master/Slave setting when using ⑤ Tak plural remote controls ⑥ Fit 1. Remove one screws located on the under of the receiver and detach the board.
  • Page 105 mark. '20 • KX-T-348 ③ How to install the receiver(continued) ⑤ Take out the connector to the backside from the hole of the lower case putting through the wiring at ①. ⑥ Fit the upper case and the lower case, and tighten the screws. (B) Installation with enclosed bracket Use this method when installaing onto a gypsum board (7 to 18mm), etc.
  • Page 106 '20 • KX-T-348 ③ ④ How to install the receiver (continued) Chan (C) Exposed installation How t Use the following procedure when installing the case with the wiring exposed. The A Cord clamp pump When Wiring remot Band (enclosed) Fix with band To dis button Hole...
  • Page 107 '20 • KX-T-348 ④ Wireless remote control (continued) Changing the wireless remote control setting How to change the Auto Run setting The Auto Run mode is not available on the building air-conditioner and gas heat pump series (excluding the cooling/heating free multi system). When using the wireless remote control to operate those models, set the wireless remote control to disable the Auto Run mode.
  • Page 108 '20 • KX-T-348 ⑤ ⑤ Receiver (continued) For the shop series For VRF series, set the indoor unit address with SW1, SW2 and SW5-2 on the indoor unit PCB from [000] to [127] so as not to duplicate. Terminal block Indoor unit (1) Indoor unit (2) Indoor unit (16)
  • Page 109 [0] to [F] so as not to duplicate. Within 2.0 mm² × 600m '20 • KX-T-348 ⑤ Receiver (continued) The receivable area of the signal when the illuminance at the receiver is 300lux. The receivable area of the signal when the illuminance at the receiver is 600lux.

  • Page 110: Motion Sensor Kit (Lb-Kit2)

    '20 • KX-T-348 11.2 Motion sensor kit (LB-KIT2) (1) Specification PJZ000Z341 External dimensions Case of wiring out to the side face, cut thin wall part Case of wiring out to the back φ15 (Ciling hole) Wiring pass hole Switch box Lockscrew of cover Unit:mm Detectable area...
  • Page 111 '20 • KX-T-348 Installation precautions Do not install the motion sensor kit at the following places in order to avoid malfunction. (1) Places exposed to direct sunlight (2) Places near heat devices (3) High humidity places (4) Hot surface or cold surface enough to generate condensation (5) Places exposed to oil mist or steam directly (6) Uneven surface (7) Places affected by the direct air flow of the AC unit...
  • Page 112 '20 • KX-T-348 (2) Installation manual PJZ012D134 WARNING ● Connect the wiring to the PCB in the control box on the indoor unit and hold the wiring securely so as not to apply unexpected stress on the PCB. ● Make sure the power source is turned off when electric wiring work. Otherwise, electric shock, malfunction and improper running may occur.
  • Page 113 '20 • KX-T-348 Installing the motion sensor • The recommended height is lower than 4000mm for motion sensor. When the installation height is higher, motion detection accuracy might be reduced. • Sensor will detect the object with a different temperature from the surrounding. •...
  • Page 114 '20 • KX-T-348 Option (A) Ceiling plane strength to install the motion sensor directly with screws. ① Prepare a relay wiring on site and lay out the wiring in advance. ② Remove the screw at the side of the motion sensor Relay wiring φ15 hole (prepare on site)
  • Page 115 '20 • KX-T-348 Option (B) screws. ① Remove the screw at the side of the motion sensor and slide the upper case in the direction of the arrow. ② (The same as of Option (A)) ② Pull the wiring of the motion sensor toward the side. Cut off the thinner part of the upper case. Lower case Thinner part Upper case...
  • Page 116 '20 • KX-T-348 ② Remove the screw at the side of the motion sensor and slide the upper case in the direction of the arrow. Lower case ② (The same as of Option (A)) ③ Pull the wiring of the motion sensor. ③...
  • Page 117 '20 • KX-T-348 <In the case of CnV2 connector on the indoor unit PCB> ① Connect the same color to the relay wiring (prepare on site) and the attached wiring <2>. ② Remove the control box cover from the indoor unit. ③...
  • Page 118 '20 • KX-T-348 (3) User's manual PJZ012D134 SAFETY PRECAUTIONS WARNING ● If a child, person with disease or other persons needed for assist uses this product, people around the person should take sufficient care. A halt of the air-conditioner due to abnormal situation or motion sensor’s control may cause a feeling of sickness or accident.
  • Page 119 '20 • KX-T-348 Control setting (from eco touch remote control) ● Refer to the installation manual for eco touch remote control to activate the infrared sensor (motion sensor). TOP screen Menu _ Service setting _ Installation settings _ Service password ②...

  • Page 120: Simple Wired Remote Control (Rch-E3)

    '20 • KX-T-348 11.3 Simple wired remote control (RCH-E PJZ000Z272 Names and functions of sections Remote control sensor Operation/Inspection lamp ON/OFF button Button to start/stop the air-conditioner During operation: Green failure: Red MODE button Use to select the mode. FAN SPEED button Button to set the fan speed TEMP button Use to raise the setting temperature.
  • Page 121 '20 • KX-T-348 MITSUBISHI HEAVY INDUSTRIES,LTD. AIR-CONDITIONING & REFRIGERATION SYSTEMS HEADQUARTERS Remote control installation dimensions In case of embedding wiring Wall surface Wiring Wiring outlet Electrical box (In case of embedding wiring) （Prepare on site） 12×7 slot hole Installation hole 9×4.5 slot hole （2 places）...
  • Page 122 '20 • KX-T-348 3. Master/ s In case of exposing cord △ Simple Remote Control Installation Manual PJZ012D069 ⑴　 Make certain to remove a screw on the bottom surface of the ⑴　 Up to two r remote control. Read together with indoor unit's installation manual. WARNING ⑴...
  • Page 123 '20 • KX-T-348 3. Master/ slave setting when more than one remote control are used ⑴　 Up to two remote controls can be connected to one unit (or one group) of indoor unit. Switch Setting Function detail Slave remote control Indoor unit SW1-1 Master remote control...
  • Page 124 ⑸　Connect the remote control cord to the terminal block. necessary at the wire 　　Connect the terminals (X and Y) of the remote control and the terminals (X and Y) of the indoor connecting section. Be careful about contact failure. unit. (No polarity of X and Y) 100 - 200m･････････････････0.5mm ×...
  • Page 125 ct failure. “88” blinks on the temperature setting indicator. (blinking for approximately 2 to 10 seconds while × 2 cores AIR CON No. data are read) Then, the return air temperature is displayed. When is pressed, return × 2 cores to the indoor unit selection display (example, “U 000”).
  • Page 126 Because of our policy of continuous improvement, we reserve the right to make changes in all specifications without notice. Because of our policy of continuous improvement, we reserve the right to make changes in all specifications without notice. Copyright MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD. Copyright MITSUBISHI HEAVY INDUSTRIES, LTD.

This manual is also suitable for:

Fdfu28kxe6fFdfu45kxe6fFdfu56kxe6fFdfu71kxe6f

Table of Contents