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Mitsubishi Heavy Industries FDK15KXZE1 Technical Manual

Vrf inverter multi-system air conditioners
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TECHNICAL MANUAL
VRF INVERTER MULTI-SYSTEM AIR-CONDITIONERS
(INDOOR UNIT)
KXZ series
Wall mounted type
FDK15KXZE1
22KXZE1
28KXZE1
36KXZE1
45KXZE1
56KXZE1
71KXZE1
90KXZE1
Note:
•
(1) Regarding the outdoor unit KXZ series, refer to the No.'14
No.'16
KX-DB-225D.
•
Manual No.'17•KX-T-264
updated June 04, 2018
KX-T-223, No.'15
KX-T-227 and
•
•

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  • Page 1 Manual No.'17•KX-T-264 updated June 04, 2018 TECHNICAL MANUAL VRF INVERTER MULTI-SYSTEM AIR-CONDITIONERS (INDOOR UNIT) KXZ series Wall mounted type FDK15KXZE1 22KXZE1 28KXZE1 36KXZE1 45KXZE1 56KXZE1 71KXZE1 90KXZE1 Note: • (1) Regarding the outdoor unit KXZ series, refer to the No.'14 KX-T-223, No.'15...

  • Page 2: Table Of Contents

    '17 • KX-T-264 CONTENTS 1. INFORMATION ....................2. SPECIFICATIONS .................... 3. EXTERIOR DIMENSIONS ................(1) Indoor units ......................(2) Remote control (Option parts) ............... 4. ELECTRICAL WIRING ..................5. NOISE LEVEL ....................12 6. TEMPERATURE AND VELOCITY DISTRIBUTION ........

  • Page 3: Information

    '17 • KX-T-264 1. INFORMATION 1.1 1.5kW-indoor units connection (1) 1.5kW-Indoor unit Model FDK15KXZE1 1.2 Connectable outdoor units (1) Compatibility with outdoor units Indoor Unit FDK15KXZE1 Category Outdoor Unit FDC112-155KXE6 FDC112-155KXZE1 FDC224-335KXE6 (service code A and there after) Heat pump...

  • Page 4: Specifications

    '17 • KX-T-264 2. SPECIFICATIONS Models FDK15KXZE1, 22KXZE1, 28KXZE1, 36KXZE1, 45KXZE1, 56KXZE1 PHA001Z126 – –...
  • Page 5 '17 • KX-T-264 Models FDK71KXZE1, 90KXZE1 PHA001Z126 – –...
  • Page 6 【Indoor unit & option parts】 Unit : kg Gross Packing Paper Plastic Metal Wood Glass Other Material weight Parts Steel Aluminium weight (Total) Model FDK15KXZE1 12.5 1.21 0.88 0.33 0.00 0.00 0.00 0.00 0.00 FDK22KXZE1 12.5 1.21 0.88 0.33 0.00 0.00 0.00 0.00...

  • Page 7: Exterior Dimensions

    '17 • KX-T-264 3. EXTERIOR DIMENSIONS Indoor units Models FDK15KXZE1, 22KXZE1, 28KXZE1, 36KXZE1, 45KXZE1, 56KXZE1 PHA001Z105 – –...
  • Page 8 '17 • KX-T-264 Models FDK71KXZE1, 90KXZE1 PHA001Z106 – –...

  • Page 9: Remote Control (Option Parts)

    '17 • KX-T-264 Remote control (Option parts) Wired remote control Model RC-EX3 Installation space Installation space Exterior appearance Exterior appearance Pearl white Pearl white (Munsell color) (Munsell color) (N8.5) near equivalent (N8.5) near equivalent R/C cable：0.3mm × 2 cores × 2 core RoHS RoHS Adapted to...
  • Page 10 '17 • KX-T-264 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 11 '17 • KX-T-264 Wireless remote control (RCN-EK2) Unit: mm – –...

  • Page 12: Electrical Wiring

    '17 • KX-T-264 4. ELECTRICAL WIRING All models PHA001Z107 – –...

  • Page 13: Noise Level

    (3) The noise levels measured in the field are usually higher than the data because of reflection. Measured based on JIS B 8616 Mike Mike position (Center & low points) Model FDK15KXZE1 Cooling 38 dB(A) P-Hi Noise Level × ..Cooling...
  • Page 14 '17 • KX-T-264 Model FDK36KXZE1 Cooling 40 dB(A) P-Hi Noise Level × ..Cooling Heating 40 dB(A) Heating N 7 0 N 6 0 N 5 0 N 4 0 N 3 0 N 2 0 1000 2000 4000 8000 Mid octave band frequency (Hz) Model FDK45KXZE1...
  • Page 15 '17 • KX-T-264 Model FDK56KXZE1 Cooling 43 dB(A) P-Hi Noise Level × ..Cooling Heating 44 dB(A) Heating N 7 0 N 6 0 N 5 0 N 4 0 N 3 0 N 2 0 1000 2000 4000 8000 Mid octave band frequency (Hz) Model FDK71KXZE1...
  • Page 16 '17 • KX-T-264 Model FDK90KXZE1 Cooling 44 dB(A) P-Hi Noise Level × ..Cooling Heating 44 dB(A) Heating N 70 N 60 N 50 N 40 N 30 N 20 1000 2000 4000 8000 Mid octave band frequency (Hz) – –...

  • Page 17: Temperature And Velocity Distribution

    These fi gures 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 fi gures under the infl uence of air temperature conditions, ceiling height, operation conditions and obstacles. Model FDK15KXZE1 Cooling Air fl...
  • Page 18 '17 • KX-T-264 Models FDK22, 28KXZE1 ： P-Hi Temperature distribution Velocity distribution ： P-Hi Temperature distribution Velocity distribution – –...
  • Page 19 '17 • KX-T-264 Model FDK36KXZE1 ： P-Hi Temperature distribution Velocity distribution ： P-Hi Temperature distribution Velocity distribution – –...
  • Page 20 '17 • KX-T-264 Model FDK45KXZE1 ： P-Hi Temperature distribution Velocity distribution ： P-Hi Temperature distribution Velocity distribution – –...
  • Page 21 '17 • KX-T-264 Model FDK56KXZE1 ： P-Hi Temperature distribution Velocity distribution ： P-Hi Temperature distribution Velocity distribution – –...
  • Page 22 '17 • KX-T-264 Model FDK71KXZE1 ： P-Hi Temperature distribution Velocity distribution ： P-Hi Temperature distribution Velocity distribution – –...
  • Page 23 '17 • KX-T-264 Model FDK90KXZE1 ： Cooling Air fl  ow ： P-Hi P-Hi Louver position Temperature distribution ℃ 2.7m Velocity distribution m/sec 2.7m ： Heating Air fl  ow ： P-Hi P-Hi Louver position Temperature distribution ℃ 2.7m Velocity distribution m/sec 2.7m – –...

  • Page 24: Capacity Tables

    Caution: In case that the cooling operation during low outdoor air temperature below -5°C is expected, install the outdoor unit where it is not influenced by natural wind. 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. FDK15KXZE1 Model Cooling Mode...
  • Page 25 '17 • KX-T-264 FDK22KXZE1 Model Cooling Mode (kW) Heating Mode (kW) Indoor air temperature Outdoor temp. Indoor temp. Outdoor 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow Air flow 14 ℃WB 16 ℃WB 18 ℃WB 19 ℃WB 20 ℃WB...
  • Page 26 '17 • KX-T-264 FDK28KXZE1 Model Cooling Mode (kW) Heating Mode (kW) Indoor air temperature Outdoor temp. Indoor temp. Air flow Outdoor 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow air temp. 14 ℃WB 16 ℃WB 18 ℃WB 19 ℃WB...
  • Page 27 '17 • KX-T-264 FDK36KXZE1 Model Cooling Mode (kW) Heating Mode (kW) Indoor air temperature Outdoor temp. Indoor temp. 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow Outdoor Air flow air temp. 14 ℃WB 16 ℃WB 18 ℃WB 19 ℃WB...
  • Page 28 '17 • KX-T-264 FDK45KXZE1 Model Cooling Mode (kW) Heating Mode (kW) Indoor air temperature Outdoor temp. Indoor temp. Outdoor 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow Air flow air temp. 14 ℃WB 16 ℃WB 18 ℃WB 19 ℃WB...
  • Page 29 '17 • KX-T-264 FDK56KXZE1 Model Cooling Mode (kW) Heating Mode (kW) Indoor air temperature Outdoor temp. Indoor temp. Outdoor 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow Air flow 14 ℃WB 16 ℃WB 18 ℃WB 19 ℃WB 20 ℃WB...
  • Page 30 '17 • KX-T-264 FDK71KXZE1 Model Cooling Mode (kW) Heating Mode (kW) Indoor air temperature Outdoor temp. Indoor temp. Air flow Outdoor 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow air temp. 14 ℃WB 16 ℃WB 18 ℃WB 19 ℃WB...
  • Page 31 '17 • KX-T-264 FDK90KXZE1 Model Cooling Mode (kW) Heating Mode (kW) Indoor air temperature Outdoor temp. Indoor temp. Air flow Outdoor 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow air temp. 14 ℃WB 16 ℃WB 18 ℃WB 19 ℃WB...

  • Page 32: Application Data

    '17 • KX-T-264 8. APPLICATION DATA 8.1 lnstallation of indoor unit PHA012D401 This manual is for the installation of an indoor unit. For electrical wiring work (Indoor), refer to page 35. For remote control installation, refer to page 39. CAUTION For wireless kit installation, refer to page 108.
  • Page 33 '17 • KX-T-264 D401 201610 ① Before installation ③ Preparation before installation Before installation Preparation before installation Front view for installing position and installing space Front view for installing position and installing space UNIT: mm UNIT: mm Install correctly according to the installation manual. Service space Confirm the following points: Service space...
  • Page 34 '17 • KX-T-264 ⑥ Refrigerant pipe ④ Installation of indoor unit (continued) ⑦ 1. A g Fixing of indoor unit Installation Steps Caution Pass the pipe through the hole ● Be sure to use new pipes for the refrigerant pipes. Use the flare nut attached to the product or Latch (2 locations) 2.
  • Page 35 '17 • KX-T-264 ⑧ Wiring-out position and wiring connection (continued) ⑦ Drain pipe (continued) ● 1. A general-purpose hard PVC pipe VP16 can be connected to the drain hose tip as a part of Address setting drain piping. Remove the front panel of indoor unit and the control cover, it is possible to change address setting. duct or 2.
  • Page 36 '17 • KX-T-264 8.2 Electric wiring work instruction PSC012D087 Electrical wiring work must be performed by an electrician quali ed by a local power provider according to the electrical installation technical standards and interior wiring regulations applicable to the installation site. ①...
  • Page 37 '17 • KX-T-264 AIR CON No. Address setting ② ③④ Operation and confirmation from remote control Address setting is done by (1) Manual address setting or (2) Automatic address setting. Operation from the eco touch remote Operation from the standard remote control AIR CON No.
  • Page 38 '17 • KX-T-264 ⑥ Operation and setting from remote control A : Refer to the instruction manual for RC-EX series ○：Nearly same function setting and operations are possible. B : Refer to the installation manual for RC-EX series △：Similar function setting and opperations are possible. C : Loading a utility software vie Internet *1: RC-EX1A has not this function.
  • Page 39 '17 • KX-T-264 ⑥ Operation and setting from remote control (continued) Setting ＆ display item Description RC-EX3 RC-E5 2 Administrator settings R/C display setting Register [Room name] [Name of I/U] Display [Indoor temp. display] or not. △ [Administrator password] Display [Error code display] or not. Display [Heating stand-by display] [Defrost operation display] [Auto cooling/heating display] [Display temp of R/C, Room, Outdoor] or not Change administrator password The administrator password can be changed.

  • Page 40: Installation Of Wired Remote Control (Option Parts)

    '17 • KX-T-264 8.3 Installation of wired remote control (Option parts) (1) Model RC-EX3 PJZ012A131 　 1. Safety precautions ● Please read this manual carefully before starting installation work to install the unit properly. Every one of the followings is important information to be observed strictly. Failure to follow these instructions properly may result in serious WARNING consequences such as death, severe injury, etc.
  • Page 41 '17 • KX-T-264 　 WARNING Do not install the unit in appropriate environment or where inflammable gas could generate, flow in, accumulate or leak. If the unit is used at places where air contains dense oil mist, steam, organic solvent vapor, corrosive gas (ammonium, sulfuric compound, acid, etc) or where acidic or alkaline solution, special spray, etc.
  • Page 42 '17 • KX-T-264 　 CAUTION Do not install the remote control at following places. (1) It could cause break-down or deformation of remote control. ・ Where it is exposed to direct sunlight ・ Where the ambient temperature becomes 0 °C or below, or 40 °C or above ・...
  • Page 43 '17 • KX-T-264 　 2 . Accessories & Prepare on site Following parts are provided. Accessories R/C main unit, wood screw (ø3.5 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 44 '17 • KX-T-264 　 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) 固定穴 Fixing holes センサー 端子 Sensor USB port Terminal block To remove the upper case from the bottom cases of R/C ·...
  • Page 45 ブッ シ ング パテで シール する こ と '17 • KX-T-264 　 リ モコ ン配線 ③ Connect wires from X and Y terminals of R/C to X and Y terminals of indoor unit. R/C 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 46 '17 • KX-T-264 　 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 47: Model Rc-E5

    '17 • KX-T-264 PJA012D730 (2) Model RC-E5 Installation manual for wired remote controller 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 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...
  • Page 48 '17 • KX-T-264 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 49 '17 • KX-T-264 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 50 '17 • KX-T-264 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 51 '17 • KX-T-264 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 52: Outline Of Operation Control By Mycrocomputer

    '16 • PAC-T-251 '17 • KX-T-264 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) Wired remote control Wired remote control Model RC-EX3 Model RC-EX3 ⑤ LCD (With backlight) ③...
  • Page 53 '16 • PAC-T-251 '17 • KX-T-264 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 54 '16 • PAC-T-251 '17 • KX-T-264 Wireless remote control 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. ② Indoor function setting Indicates the setting number of the indoor function setting.

  • Page 55: Operation Control Function By The Wired Remote Control

    '16 • PAC-T-251 '17 • KX-T-264 1.10.2 Operation control function by the wired remote control 9.2 Operation control function by the wired remote control ●Model RC-EX3 (1) Switching sequence of the operation mode switches of remote control (a) Tap the change operation mode button on the TOP screen. (b) When the change operation mode screen is displayed, tap the button of desired mode.
  • Page 56 '16 • PAC-T-251 '17 • KX-T-264 ●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 57 '16 • PAC-T-251 '17 • KX-T-264 Model RC-E5 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.

  • Page 58: Operation Control Function By The Indoor Control

    '17 • KX-T-264 9.3 Operation control function by the indoor control (1) Auto operation (Heat recovery 3-pipe combination systems only) (a) If “Auto” mode is selected by the remote control, the heating and the cooling are automatically switched according to the difference between outdoor air temperature and setting temperature and the difference between setting temperature and return air temperature.
  • Page 59 '16 • PAC-T-251 '17 • KX-T-264 (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 60 '16 • PAC-T-251 '17 • KX-T-264 Timer operation (a) RC-EX3 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 61 '16 • PAC-T-251 '17 • KX-T-264 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) Contents of operation...
  • Page 62 '16 • PAC-T-251 '17 • KX-T-264 Auto swing control Note Even if [Auto Swing] is selected, the louver position with anti draft function is fixed to position 1. (a) RC-EX3 Louver control o operate the swing louver when the air-conditioner is operating, press the “Direction” button on the TOP screen of remote control.
  • Page 63 '16 • PAC-T-251 '17 • KX-T-264 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 Set room temperature (iii) Thermostat is turned ON when the room temperature is in the range of -1 <...
  • Page 64 '16 • PAC-T-251 '16 • PAC-T-251 '17 • KX-T-264 (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 65 the microcomputer of indoor unit become ineffective. '16 • PAC-T-251 (14) Cooling, dehumidifying frost protection '17 • KX-T-264 To prevent frosting during cooling mode or dehumidifying mode operation, the of compressor speed is reduced if the indoor heat exchanger temperature (detected with Thi-R) drops to 1.0 °C or lower at 4 minutes after the start of Operation check mode compressor operation.
  • Page 66 Remote control (2) Unit No. may be set at random unless duplicated, it should be better to set orderly like 0, 1, 2…, F to avoid mistake. (b) Display to the remote control '17 • KX-T-264 (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.
  • Page 67 ④ ⑤ Cooling/heating selection level CnT ⑤ /CnTA ① CnT ⑤ /CnTA ② CnT ⑤ /CnTA ③※ CnT ⑤ /CnTA ④ CnT ⑤ CnT ⑤ CnT ⑤ /CnTA ⑦ ⑥ Cooling/heating selection pulse CnT ⑥ /CnTA ① CnT ⑥ /CnTA ② CnT ⑥...
  • Page 68 '17 • KX-T-264 (c) Emergency stop signal processing When the external signal input is used to stop operation, the remote stop signal is input at CnT or CnTA. This input is effective only on indoor units which can receive it. Where two or more indoor units are controlled with a wired remote control on the system, on which the external input is set at the “Same operation on all units”, if the stop signal is input at CnT on an indoor unit, all units connected to the wired remote control can be controlled collectively.
  • Page 69 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 '17 •...
  • Page 70 Operation permission permission Operation permission/ Operation( ) prohibition zone permission ( ※ ) Operation prohibition zone is determined by the OR judgment between CnT operation prohibition zone and CnTA '16 • PAC-T-251 '17 • KX-T-264 operation prohibition zone. (c) In case of CnT ③ operation permission/prohibition level > CnTA ② operation/stop pulse (19) Temporary stop input CnTA In case of temporary stop, operation lamp of remote control lights, but indoor/outdoor unit stop the operation.
  • Page 71 ⑥ Pulse Heating Cooling/heating Auto Cooling Cooling Heating Cooling/heating Auto Cooling Cooling '17 • KX-T-264 (Competitive) ↑Set “Cooling/ ↑Auto, cooling, dry mode command ↑Auto, heating mode Heating” “Pulse” by remote control command by remote control Notes (1) Regarding the priority order for combinations of CnT and CnTA, refer to Page 64. (21) Room temperature detection temperature compensation during heating With the standard the compressor is turned ON/OFF with the thermostat setting temperature.
  • Page 72 '17 • KX-T-264 Operation mode Branching Outdoor unit control (Indoor unit) (Remote control) (i) Set the indoor unit 10 as the “Master” from the remote control Ra. (ii) Set each of indoor units 11 – 13 as the “Slave” from the remote controls Rb – Rd. (iii) Set the operation mode at cooling for the indoor unit 10 from the remote control Ra.
  • Page 73 When the fan is used for circulation, the unit is operated as follows depending on the setting with the remote control. If the invalid is selected with the remote control, the fan is operated continuously during the fan operation. (mormal fan mode) '17 •...

  • Page 74: System Troubleshooting Procedure

    '17 • KX-T-264 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 75: Contents Of Troubleshooting

    '17 • KX-T-264 '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 76 '17 • KX-T-264 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 77 '17 • KX-T-264 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 78 '17 • KX-T-264 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 79 '17 • KX-T-264 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 80 '17 • KX-T-264 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 81 '17 • KX-T-264 Green Content Error code Louver motor failure Keeps flashing Stays OFF Indoor None Remote control: Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure L Check at the indoor unit side. Operate after waiting for more than 1 minute.
  • Page 82 '17 • KX-T-264 Green Power source system anomaly Content Error code Stays OFF Stays OFF Indoor None Remote control: (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 indoor terminal block?
  • Page 83 '17 • KX-T-264 Green Content Error code Power source system error Keeps flashing Stays OFF Indoor None Remote control: (Power source to remote control) Keeps flashing 2-time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the connection of the Correct.
  • Page 84 '17 • KX-T-264 Green Content Error code WAIT Keeps flashing Stays OFF Indoor WAIT Remote control: 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 85 '17 • KX-T-264 Green Content Error code Keeps flashing Stays OFF Indoor Remote control: WAIT WAIT Keeps flashing Keeps flashing Outdoor 5. Troubleshooting 1. Applicable model FDC224, 280KXZPE1 only Diagnosis Countermeasure (In case of fuse blown, how to check the unit before replacement of fuse.) Isn't there any short circuit...
  • Page 86 '17 • KX-T-264 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 87 '17 • KX-T-264 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 88 '17 • KX-T-264 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 control PCB stays OFF.) In case that LED on outdoor control PCB stays OFF.
  • Page 89 '17 • KX-T-264 Green Content Error code Stays OFF Stays OFF Indoor Remote control: WAIT WAIT Stays OFF Stays OFF Outdoor 5. Troubleshooting 1. Applicable model FDC224, 280KXZPE1 only Diagnosis Countermeasure (In case of fuse blown, how to check the unit before replacement of fuse.) From previous page.
  • Page 90 '17 • KX-T-264 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.
  • Page 91 '17 • KX-T-264 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 noise.
  • Page 92 '17 • KX-T-264 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 connected units.
  • Page 93 '17 • KX-T-264 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 94 '17 • KX-T-264 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 95 '17 • KX-T-264 Green Indoor heat exchanger Content Error code Keeps flashing 1-time flash Indoor Remote control: temperature thermistor anomaly (Thi-R) Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Insert the connector the connector of thermistor connected securely.
  • Page 96 '17 • KX-T-264 Green Indoor return air Content Error code Keeps flashing 1-time flash Indoor Remote control: temperature thermistor anomaly (Thi-A) Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure the connector of Insert the connector thermistor connected securely.
  • Page 97 '17 • KX-T-264 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 Aren't more...
  • Page 98 '17 • KX-T-264 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 99 '17 • KX-T-264 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 Isn't the automatic setting and Review address setting.
  • Page 100 '17 • KX-T-264 Green Content Error code Indoor DC fan motor anomaly Keeps flashing 1-time flash Indoor Remote control: Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Does any foreign material Remove foreign material. intervene in rotational area of fan propeller? 2.
  • Page 101 '17 • KX-T-264 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 102 '17 • KX-T-264 Green Content Error code Indoor unit operation Keeps flashing 1-time flash Indoor Remote control: 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 unit control PCB on the indoor control...
  • Page 103 '17 • KX-T-264 Green Content Error code Indoor DC fan motor rotation Keeps flashing 1-time flash Indoor Remote control: speed anomaly Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Does any foreign material Remove foreign material. intervene in rotational area of fan propeller? 2.
  • Page 104 '17 • KX-T-264 Green Content Error code Remote control Keeps flashing Stays OFF Indoor Remote control: temperature thermistor anomaly (Thc) Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure the connector of Insert the connector thermistor connected securely.
  • Page 105 '17 • KX-T-264 Green Content Error code Keeps flashing Stays OFF Indoor Remote control: Emergency stop 7-segment display: – Keeps flashing 1-time flash Outdoor 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 106: Instruction Of How To Replace Pcb

    '17 • KX-T-264 10.3 Instruction of how to replace PCB PHA012D050AA (1) FDK15-56KXZE1 SAFETY PRECAUTIONS SAFETY PRECAUTIONS ● ● Read the "SAFETY PRECAUTIONS" carefully first of all and then strictly follow it during the replacement in order to protect yourself. Read the "SAFETY PRECAUTIONS"...
  • Page 107 '17 • KX-T-264 PHA012D051AA (2) FDK71, 90KXZE1 SAFETY PRECAUTIONS SAFETY PRECAUTIONS ● ● Read the "SAFETY PRECAUTIONS" carefully first of all and then strictly follow it during the replacement in order to protect yourself. Read the "SAFETY PRECAUTIONS" carefully first of all and then strictly follow it during the replacement in order to protect yourself. ●...

  • Page 108: Indoor Pcb Setting

    '17 • KX-T-264 10.4 Indoor PCB setting 10.4 Indoor PCB setting Code Input Default setting Remarks 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 109: Option Parts

    '17 • KX-T-264 PHA012D049 WIRELESS REMOTE RCN-K-E2 RCN-K71-E2 201612 CONTROLLER&RECEIVER 11. OPTION PARTS INSTALLATION MANUAL 11.1 Wireless kit (RCN-K-E2･RCN-K71-E2) PHA012D049 Safety precautions ●Please read this manual carefully before starting installation work to install the unit properly. Every one of the followings is important information to be observed strictly. WARNING Failure to follow these instructions properly may result in serious consequences such as death, severe injury, etc.
  • Page 110 '17 • KX-T-264 WARNING 01612 ● Do not wash the unit with water. It could cause electric shocks, or break-down. ● Use the cables for wiring, and connect them securely with care to protect electronic parts from external forces. Improper connections or could cause heat generation, etc.
  • Page 111 '17 • KX-T-264 ② Preparation before installation Setting on site Prevents interference ON : Normal OFF : Customized during plural setting Receiver master/slave PCB on the receiver has the ON : Master OFF : Slave setting following switches to set the function. Buzzer ON : Valid OFF : Invalid...
  • Page 112 '17 • KX-T-264 ③ How to install the receiver (continued) ② Install Display-Assy on Indoor unit (a) Remove the control cover, and then louver wiring can be removed to CnJ1 on the PWB. (b) Remove the louver wiring hanging on display holder. (c) Remove the latches of display holder and then display holder can be removed.
  • Page 113 '17 • KX-T-264 ③ ④ ③ How to install the receiver (continued) How to install the receiver (continued) In the case of Right-hand-side piping In the case of right-hand-side piping Display Assy Display Assy Display-Assy Display-Assy disa To d butt * No Control Assy Control Assy...
  • Page 114 '17 • KX-T-264 ④ Wireless remote control (continued) Changing the remote control setting How to change the Auto Run setting The Auto Run mode is not available on the building air-conditioning and gas heat pump series (excluding the cooling/heating free multi system). When using the remote control to operate those models, set the remote control to disable the Auto Run mode.
  • Page 115 Cutting Cutting Cutting '17 • KX-T-264 ⑤ ⑤ Receiver (continued) 3. Set the indoor unit and outdoor unit numbers by manually specifying the addresses. Use the rotary switchs SW1 and SW2 provided on the indoor unit PCB (printed circuit board) to set the A ba indoor unit numbers so that they are not duplicated.
  • Page 116 '17 • KX-T-264 ⑤ Receiver (continued) Backup button A backup switch is provided on the receiver section of the panel surface. When operation from the wireless remote control unit is not possible (due to flat batteries, a mislaid unit, a unit failure), you can use it as an emergency means.

  • Page 117: Simple Wired Remote Control (Rch-E3)

    '17 • KX-T-264 11.2 Simple wired remote control (RCH-E PJZ000Z272 Names and functions of sections Remote control sensor ON/OFF button Operation/Inspection lamp 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...
  • Page 118 '17 • KX-T-264 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 119 '17 • KX-T-264 In case of exposing cord Simple Remote Control Installation Manual PJZ012D069 ⑴　 Make certain to remove a screw on the bottom surface of the remote control. Read together with indoor unit's installation manual. WARNING ⑴ ● Fasten the wiring to the terminal securely and hold the cable securely so as not to apply Screw ⑵　Remove the upper case of the remote control.
  • Page 120 '17 • KX-T-264 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 121 connecting section. Be careful about contact failure. unit. (No polarity of X and Y) 100 - 200m･････････････････0.5mm × 2 cores Under 300m･････････････････0.75mm × 2 cores ⑹　 Mount the upper case for restoring to its former state so as not to crimp the remote control cord, Under 400m･････････････････1.25mm ×...
  • Page 122 ct failure. “88” blinks on the temperature setting indicator. (blinking for approximately 2 to 10 seconds while × 2 cores AIR CON No. data is read) Then, the return air temperature is displayed. When is pressed, return × 2 cores to the indoor unit selection display (example, “U 000”).

  • Page 123: Eev-Set

    '17 • KX-T-264 11.3 EEV-SET How to install Electronic Expansion Valve outside of the AC unit The external expansion valve is installed outside the KX indoor unit series, and control refrigerant flow to decrease refrigerant flow noise from the indoor unit. This manual is for the installation of EEV-SET to install indoor - outdoor unit piping.
  • Page 124 '17 • KX-T-264 ② Refrigerant pipe work Install EEV-SET between indoor unit and branch pipe of liquid line. In case of Indoor unit type 22 - 56, joint to connect to Φ6.35 liquid pipe is necessary. CAUTION Please cool down the body part of electronic expansion valve so that the part may not be heated up to high temperature. If the temperature in body part exceeds 120℃...
  • Page 125 '17 • KX-T-264 ◦  U se phosphorus deoxidized copper alloy seamless pipe (C1220T specified in JIS H 3300) for refrigeration pipe installation. In addition, make sure there is no damage both inside and outside of the pipe, and no harmful substances such as sulfur, oxide, dust or contaminant stuck on the pipes.
  • Page 126 '17 • KX-T-264 2. Remove the expansion valve connector of the indoor unit and then connect the wiring of EEV-SET to the CNA (PWB). 1) Check if the indoor unit is turned off and then connect the wiring of EEV-SET. 2) Wiring should be fi xed correctly so that any tension does not be put on the connector.
  • Page 127 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.

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