Page 1 Manual No. '20 • KX-T-373 updated October 29, 2021 TECHNICAL MANUAL VRF INVERTER MULTI-SYSTEM AIR-CONDITIONERS (OUTDOOR UNIT) KXZ series (Heat pump type) FDC121KXZEN1-W, 140KXZEN1-W, FDC155KXZEN1-W (1 Phase) FDC121KXZES1-W, 140KXZES1-W, FDC155KXZES1-W (3 Phase) (INDOOR UNIT) Ceiling cassette-4 way type Ceiling cassette-4 way...
Page 2 '20 • KX-T-373 PREFACE Combination table for KXZE1 series and KXZE1-W series ( ) Date of launching in the market Indoor unit Connectable Same series Mixed series Same series remote control RC-E3 Category RC-E4 RC-E5 KXZE1 2-wire type KXZE1 KXZE1-W RC-EX1A KXZE1-W RC-EX3...
Page 3 '20 • KX-T-373 CONTENTS 1. GENERAL INFORMATION ................3 1.1 Increased indoor unit connection capacity ..........3 1.2 How to read the model name ..............3 1.3 Table of models .....................3 1.4 Model description (Option parts) ..............4 1.5 Branch pipe set and Header pipe set ............4 2.
Page 4 '20 • KX-T-373 8. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ....158 8.1 Remote control (Option parts) ............158 8.2 Operation control function by the wired remote control ....161 8.3 Operation control function by the indoor control ......164 8.4 Operation control function by the outdoor control ......
Page 5 '20 • KX-T-373 1. GENERAL INFORMATION 1.1 Increased indoor unit connection capacity Micro KXZ-W series can connect indoor unit capacity up to 150%. • Capacity from 80% to 150% is possible Item Number of connectable Connectable capacity Model FDC121KXZEN1-W 1 to 8 units 90 - 181 FDC121KXZES1-W FDC140KXZEN1-W...
Page 6 '20 • KX-T-373 1.4 Model description (Option parts) (1) Table of indoor units panel (Option) Model Capacity Parts Model T-PSA-5BW-E Standard T-PSA-5BB-E 28,36,45,56,71,90,112,140,160 T-PSAE-5BW-E Prevention T-PSAE-5BB-E TC-PSAG-5AW-E Standard TC-PSA-5AW-E FDTC 15,22,28,36,45,56 TC-PSAGE-5AW-E Prevention TC-PSAE-5AW-E (2) Table of remote control (Option) (a) Wired remote control Model Remote control model...
Page 7 '20 • KX-T-373 2. OUTDOOR UNIT 2.1 Speciﬁcations Models FDC121KXZEN1-W, 140KXZEN1-W, 155KXZEN1-W, FDC121KXZES1-W, 140KXZES1-W, 155KXZES1-W PCA001Z899...
Page 8 '20 • KX-T-373 Weights of packing parts Unit :kg Metal Packing Gross Parts Foam Paper Plastic Wood Glass Other Weight weight Polystyrene Aluminium Steel (Total) FDC121KXZEN1-W 93.00 8.00 3.63 0.14 0.07 4.13 0.03 FDC140KXZEN1-W 93.00 8.00 3.63 0.14 0.07 4.13 0.03 FDC155KXZEN1-W 93.00...
Page 9 '20 • KX-T-373 2.2 Exterior dimensions All models PCA001Z900...
Page 10 '20 • KX-T-373 2.3 Electrical wiring Models FDC121KXZEN1-W, 140KXZEN1-W, 155KXZEN1-W PCA001Z901 ...
Page 11 '20 • KX-T-373 Models FDC121KXZES1-W, 140KXZES1-W, 155KXZES1-W PCA001Z902...
Page 12 '20 • KX-T-373 2.4 Noise level Measured based on JIS B 8616 Mike position as highest noise level in position as below Distance from front side Height (a) Sound power level Models FDC121KXZEN1-W 121KXZES1-W Cooling Heating Noise level 68 dB (A) Noise level 71 dB (A) 1/3OctB(HzB) 1/3OctB(HzB)
Page 13 '20 • KX-T-373 (b) Sound pressure level Models FDC 121KXZEN1-W 121KXZES1-W Cooling Heating Noise level 54 dB(A) Noise level 56 dB(A) 1000 2000 4000 8000 1000 2000 4000 8000 Mid octave band frequency (Hz) Mid octave band frequency (Hz) Models FDC 140KXZEN1-W 140KXZES1-W Cooling Heating...
Page 14 '20 • KX-T-373 2.5 Application data 3. UNIT 2.5.1 Installation of outdoor unit Outdoor unit capacity ◎This manual describes outdoor unit installation work. PSC012D165 Designed for R32 refrigerant ◎For indoor unit installation and electrical cabling, please refer to page 95. －...
Page 15 RC－EX1A （ 2 cores） RC－E5 （ 2 cores） Number of connectable units 1－10 1－10 1－8 1－8 1－8 FD○△△KXE6 KXZ Series indoor unit RC－E4 （ 2 cores） Total capacity of indoor units 112－210 124－232 90－135 90－168 90－182 RC－E3 （ 2 cores）...
Page 16 '20 • KX-T-373 3. UNIT DELIVERY AND INSTALLATION Take particular care in carrying in or moving the unit, and always perform such an operation with two or more persons. When you sling the unit for portage, do not fail to take into consideration the deviation of the gravity center from its center. CAUTION 2D165 Improper slinging may cause the unit to lose balance and fall.
Page 17 (on the indoor unit connection side). For determination of appropriate header, different diameter pipe joint and blind pipe sizes, ● please refer to "Header Set," (which can be purchased separately). n cause personal injury. pending the operating Attention '20 • KX-T-373 For the section between an indoor unit and the header, use a pipe of the diameter speciﬁed for the indoor unit.
Page 18 '20 • KX-T-373 Fix both liquid and gas service valves at the valve main bodies as illustrated on the right, and then fasten them, applying appropriate fastening torque. (1) Dress re Do not hold the valve cap area with a spanner. Service valve size Tightening torque Tightening angle...
Page 19 should b Gas pipe Wiring s Gauge manifold Nitrogen Service point Power sour (check joint) '20 • KX-T-373 Lo knob Hi knob Single-phas 220/240V 220V 60Hz Three-phas 380/415V 380V 60Hz Power sour Outdoor unit Single-phas Vacuuming Please pull air from the check joints of the service valves on both liquid and gas sides. 220/240V 220V 60Hz ＜Work ﬂow＞...
Page 20 '20 • KX-T-373 4-5. Heat insulation for prevention of dew condensation (1) Dress refrigerant pipes (both gas and liquid pipes) for heat insulation and prevention of dew condensation. Improper heat insulation/anti-dew dressing can result in a water leak or dripping causing damage to household effects, etc. (2) Use a heat insulating material that can withstand 120℃...
Page 21 A typical resistance value is [46000 / (No. of connected FD○A△△KXE4 and KXE5 series units x 5) + (No. of connected FD○△△KXE6 and KXZ series units x 9)]. cylinder. If the resistance value is 100 ohms or less, tentatively detach signal cables and thus, divide the network into more than one block (to reduce the number...
Page 22 '20 • KX-T-373 Indoor and outdoor signal wires Unless stated When previo Connect the signal line between indoor unit and outdoor unit to A1 and B1. ● Connect the signal line between outdoor units to A2 and B2. ● Manual add Please use a shielded cable for a signal line and connect a shielding earth at all the indoor units and outdoor units.
Page 23 This control system controls the controls of more than one air-conditioner's outdoor unit, indoor unit and remote control unit through communication control, using the 3 minute microcomputers built in the respective controllers. Address setting needs to be done for both outdoor and indoor units. Turn on power in the order of the outdoor units and then the indoor units.
Page 24 '20 • KX-T-373 Unless stated otherwise, the following procedures apply, when new SL is chosen for the communication protocol. When previous SL is chosen, use ﬁgures shown in [ ] in carrying out these procedures. Manual address setting Generally applicable to new SL/previous SL, use ﬁgures in [ ] with previous SL. ①...
Page 25 ⑨ Network connection When you have conﬁrmed an “AUE” indication on the display of each outdoor unit, engage the network connectors again. ⑩ Network polarity setting After you have made sure that the network connectors are engaged, select and enter “1” in P34 on the 7-segment display panel of any outdoor unit (on only 1 unit) to specify '20 •...
Page 26 '20 • KX-T-373 Operating procedure The externa (1) When single indoor unit is connected to the remote control. display pane Item Operation Display "0" : Extern ① Press the AIR CON No. switch for 3 seconds or longer. Address change mode [CHANGE ADD.▼] "1"...
Page 27 ⑬ If you want to end the session (without reﬂecting new address settings) [ON/OFF] ・You c →Forced termination Before you complete the present address setting session, press the “ON/OFF” switch. ・You c Then the display is change to exit from this mode and switch the display to the normal state. ・You c All address settings changed in the session will be aborted and not reﬂected.
Page 28 '20 • KX-T-373 The external input function of CnS1 can be changed by changing the setting in P07 on the 7-segment display panel. When a signal is input to CnS1, the following functions are enabled. CnS1 closed CnS1 opened "0" : External operation input Operation permitted Operation prohibition "1"...
Page 29 check operation if it is out of the applicable temperature range. ・You cannot check the fresh air ventilation indoor unit. (You can check indoor units other than the fresh air ventilation indoor unit on the same refrigerant system.) ・You cannot performe the check operation if the connected indoor unit is only one in one refrigerant system. ・You cannot performe the check operation if it is set at 0% in the demand mode or capacity save mode.
Page 30 '20 • KX-T-373 2.5.2 Safety precautions in handling air-conditioners with flammable refrigerant R32 REFRIGERANT USED PSA012B839G • There is information included in the user’s manual and/or • is leaked, together with an external ignition source, there is a installation manual. possibility of ignition.
Page 31 '20 • KX-T-373 CAUTION 4.9 Checks to electrical devices 10. Charging procedures • Repair and maintenance to electrical components • Under no circumstances shall potential sources of • In addition to conventional charging procedures, the shall include initial safety checks and component ignition be used in the searching for or detection of following requirements shall be followed.
Page 32 '20 • KX-T-373 CAUTION • Hoses shall be complete with leak-free disconnect 13. Recovery 14. Other safety precautions couplings and in good condition. ● • When removing refrigerant from a system, either for • A brazed, welded, or mechanical connection shall be •...
Page 33 '20 • KX-T-373 Selection of installation location for the indoor unit ● Minimum installation area for indoor unit CAUTION The indoor unit shall be installed in a room with minimum installation area or more according to the refrigerant charge amount (factory refrigerant charge +additional refrigerant charge).
Page 34 '20 • KX-T-373 3. INDOOR UNIT 3.1 Speciﬁcations (1) Ceiling cassette-4 way type (FDT) Models FDT28KXZE1-W, 36KXZE1-W, 45KXZE1-W, 56KXZE1-W, 71KXZE1-W PJF000Z757...
Page 35 '20 • KX-T-373 Models FDT90KXZE1-W, 112KXZE1-W, 140KXZE1-W, 160KXZE1-W PJF000Z757...
Page 36 '20 • KX-T-373 (2) Ceiling cassette-4 way compact type (FDTC) Models FDTC15KXZE1-W, 22KXZE1-W, 28KXZE1-W, 36KXZE1-W, 45KXZE1-W, 56KXZE1-W PJF000Z758...
Page 37 '20 • KX-T-373 (3) Wall mounted type (FDK) Models FDK15KXZE1-W, 22KXZE1-W, 28KXZE1-W, 36KXZE1-W, 45KXZE1-W PHA001Z173...
Page 38 '20 • KX-T-373 Models FDK56KXZE1-W, 71KXZE1-W, 90KXZE1-W PHA001Z173...
Page 39 '20 • KX-T-373 3.2 Exterior dimensions 3.2.1 Indoor unit (1) Ceiling cassette-4 way type (FDT) Models FDT28KXZE1-W, 36KXZE1-W, 45KXZE1-W, 56KXZE1-W, 71KXZE1-W PJF000Z759...
Page 40 '20 • KX-T-373 Models FDT90KXZE1-W, 112KXZE1-W, 140KXZE1-W, 160KXZE1-W PJF000Z760...
Page 41 '20 • KX-T-373 (2) Ceiling cassette-4 way compact type (FDTC) All models (a) Honeycomb type PJF000Z762...
Page 42 '20 • PAC-T-352 '20 • KX-T-373 (b) Grid type PJF000Z764 - 33 -...
Page 43 '20 • KX-T-373 (3) Wall mounted type (FDK) Models FDK15KXZE1-W, 22KXZE1-W, 28KXZE1-W, 36KXZE1-W, 45KXZE1-W, 56KXZE1-W PHA001Z176...
Page 44 '20 • KX-T-373 Models FDK71KXZE1-W, 90KXZE1-W PHA001Z177...
Page 45 '20 • KX-T-373 3.2.2 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 46 '20 • KX-T-373 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 47 '20 • KX-T-373 (2) Wireless remote control (RCN-E2, RCN-EK2) This remote control is an accessory of the wireless remote control kit. (Refer to 12.1 wireless kit) Unit: mm...
Page 48 '20 • KX-T-373 3.3 Electrical wiring (1) Ceiling cassette-4 way type (FDT) All models PJF000Z761...
Page 49 '20 • KX-T-373 (2) Ceiling cassette-4 way compact type (FDTC) All models PJF000Z763...
Page 50 '20 • KX-T-373 (3) Wall mounted type (FDK) All models PHA001Z178...
Page 51 '20 • KX-T-373 3.4 Noise level Note (1) The data are based on the following conditions. Ambient air tempetature: Indoor unit 27˚C DB, 19˚C WB. Outdoor unit 35˚C DB (2) The data in the chart are measuted in an unechonic room. (3) The noise levels measured in the field are usually higher than the data because of reflection.
Page 52: Table Of Contents
'20 • KX-T-373 (ii) Air flow : Hi Models FDT28,36KXZE1-W Model FDT45KXZE1-W Model FDT56KXZE1-W Noise level Cooling:32 dB (A) Noise level Cooling:33 dB (A) Noise level Cooling:33 dB (A) Heating:31 dB (A) Heating:33 dB (A) Heating:33 dB (A) Cooling Heating Cooling Heating Cooling...
Page 53 '20 • KX-T-373 Model FDT71KXZE1-W Model FDT90KXZE1-W Model FDT112KXZE1-W Noise level Cooling:32 dB (A) Noise level Cooling:36 dB (A) Noise level Cooling:37 dB (A) Heating:32 dB (A) Heating:36 dB (A) Heating:37 dB (A) Cooling Heating Cooling Heating Cooling Heating 1000 2000 4000 8000...
Page 54: (Ii) Air Flow : Hi
'20 • KX-T-373 (2) Ceiling cassette-4 way compact type (FDTC) 1.5m Measured based on JIS B 8616 Mike (Center & low points) Mike position as right (a) Sound power level Model FDTC15KXZE1-W Models FDTC22,28KXZE1-W Model FDTC36KXZE1-W Noise level Cooling:47 dB (A) Noise level Cooling:49 dB (A) Noise level Cooling:54 dB (A) Heating:46 dB (A)
Page 55 '20 • KX-T-373 (ii) Air flow : Hi Model FDTC15KXZE1-W Models FDTC22,28KXZE1-W Model FDTC36KXZE1-W Noise level Cooling:30 dB (A) Noise level Cooling:32 dB (A) Noise level Cooling:36 dB (A) Heating:30 dB (A) Heating:32 dB (A) Heating:36 dB (A) Cooling Heating Cooling Heating Cooling...
Page 56 '20 • KX-T-373 (iv) Air flow : Lo Model FDTC15KXZE1-W Models FDTC22,28KXZE1-W Model FDTC36KXZE1-W Noise level Cooling:25 dB (A) Noise level Cooling:25 dB (A) Noise level Cooling:26 dB (A) Heating:22 dB (A) Heating:25 dB (A) Heating:26 dB (A) Cooling Heating Cooling Heating Cooling...
Page 57: Heating:38 Db (A) Cooling
'20 • KX-T-373 1000 2000 4000 8000 1000 2000 4000 8000 1000 2000 4000 8000 Mid octave band frequency (Hz) Mid octave band frequency (Hz) Mid octave band frequency (Hz) (b) Sound pressure level (i) Air flow : P-Hi Model FDK15KXZE1-W Models FDK22,28KXZE1-W Model FDK36KXZE1-W Noise level Cooling:38 dB (A)
Page 58: Noise Level Cooling:39 Db (A)
'20 • KX-T-373 1000 2000 4000 8000 1000 2000 4000 8000 1000 2000 4000 8000 Mid octave band frequency (Hz) Mid octave band frequency (Hz) Mid octave band frequency (Hz) Model FDK45KXZE1-W Model FDK56KXZE1-W Model FDK71KXZE1-W Noise level Cooling:41 dB (A) Noise level Cooling:41 dB (A) Noise level Cooling:40 dB (A) Heating:41 dB (A)
Page 59 '20 • KX-T-373 1000 2000 4000 8000 1000 2000 4000 8000 1000 2000 4000 8000 Mid octave band frequency (Hz) Mid octave band frequency (Hz) Mid octave band frequency (Hz) Model FDK90KXZE1-W Noise level Cooling:39 dB (A) Heating:39 dB (A) Cooling Heating 1000...
Page 60 '20 • KX-T-373 3.5 Temperature and velocity distribution Indoor temperature Cooling 27°CDB/19°CWB, Heating 20°CDB 〔 Note 〕 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) Ceiling cassette-4 way (FDT) Models FDT28KXZE1-W, 36KXZE1-W, 45KXZE1-W ：...
Page 61 '20 • KX-T-373 Models FDT56KXZE1-W, 71KXZE1-W ： P-Hi ： P-Hi Temperature distribution Velocity distribution ： P-Hi Temperature distribution Velocity distribution ISD16448...
Page 62 '20 • KX-T-373 Models FDT90KXZE1-W, 112KXZE1-W, 140KXZE1-W, 160KXZE1-W ： P-Hi ： P-Hi Temperature distribution Velocity distribution ： P-Hi Temperature distribution Velocity distribution ISD16448...
Page 63 '20 • KX-T-373 (2) Ceiling cassette-4 way compact (FDTC) FDTC15KXZE1 Model FDTC15KXZE1-W Cooling Air flow: P-Hi Louver position Temperature distribution (℃) 2.7m 2.7m 15 15 15 15 19 19 19 19 23 23 23 23 25 25 25 25 Velocity distribution (m/sec) 2.7m 2.7m...
Page 64 '20 • KX-T-373 Models FDTC22KXZE1-W, 28KXZE1-W FDTC22,28 KXZE1 Cooling Air flow: P-Hi Louver position Temperature distribution (℃) 2.7m 2.7m 15 15 15 15 18 18 18 18 21 21 21 21 24 24 24 24 Velocity distribution (m/sec) 2.7m 2.7m 2.7m Heating Air flow: P-Hi...
Page 65 '20 • KX-T-373 FDTC36KXZE1 Model FDTC36KXZE1-W Cooling Air flow: P-Hi Louver position Temperature distribution (℃) 2.7m 2.7m 15 15 15 15 18 18 18 18 21 21 21 21 24 24 24 24 Velocity distribution (m/sec) 2.7m 2.7m 2.7m Heating Air flow: P-Hi Temperature distribution Louver position...
Page 66 '20 • KX-T-373 FDTC45KXZE1 Model FDTC45KXZE1-W Cooling Air flow: P-Hi Louver position Temperature distribution (℃) 2.7m 2.7m 2.7m 2.7m 15 15 15 15 18 18 18 18 21 21 21 21 24 24 24 24 Velocity distribution (m/sec) 2.7m 2.7m 2.7m 2.7m Heating...
Page 67 '20 • KX-T-373 Model FDTC56KXZE1-W FDTC56KXZE1 Cooling Air flow: P-Hi Louver position Temperature distribution (℃) 2.7m 2.7m 2.7m 15 15 15 15 18 18 18 18 21 21 21 21 24 24 24 24 Velocity distribution (m/sec) 2.7m 2.7m 2.7m Heating Air flow: P-Hi Louver position...
Page 68 '20 • KX-T-373 (3) Wall mounded type (FDK) Model FDK15KXZE1-W Cooling Air ﬂ ow ： P-Hi Louver position Temperature distribution Temperature distribution ( ℃) 2.7m Velocity distribution Velocity distribution (m/sec) 2.7m Heating Air ﬂ ow ： P-Hi Louver position Temperature distribution Temperature distribution ( ℃) 2.7m Velocity distribution...
Page 69 '20 • KX-T-373 Models FDK22KXZE1-W, 28KXZE1-W ： P-Hi Temperature distribution (℃ ) Velocity distribution (m/sec) ： P-Hi Temperature distribution (℃ ) Velocity distribution (m/sec) ISD16504...
Page 70 '20 • KX-T-373 Model FDK36KXZE1-W ： P-Hi Temperature distribution (℃ ) Velocity distribution (m/sec) ： P-Hi Temperature distribution (℃ ) Velocity distribution (m/sec) ISD16504...
Page 71 '20 • KX-T-373 Model FDK45KXZE1-W ： P-Hi Temperature distribution (℃ ) Velocity distribution (m/sec) ： P-Hi Temperature distribution (℃ ) Velocity distribution (m/sec) ISD16504...
Page 72 '20 • KX-T-373 Model FDK56KXZE1-W ： P-Hi Temperature distribution (℃ ) Velocity distribution (m/sec) ： P-Hi Temperature distribution (℃ ) Velocity distribution (m/sec) ISD16504...
Page 73 '20 • KX-T-373 Model FDK71KXZE1-W ： P-Hi Temperature distribution (℃ ) Velocity distribution (m/sec) ： P-Hi Temperature distribution (℃ ) Velocity distribution (m/sec) ISD16504...
Page 74 '20 • KX-T-373 Model FDK90KXZE1-W ： Cooling Air ﬂ ow ： P-Hi P-Hi Louver position Temperature distribution ℃ (℃ ) 2.7m Velocity distribution m/sec (m/sec) 2.7m Heating Air ﬂ ow ： P-Hi ： P-Hi Louver position Temperature distribution ℃ (℃ ) 2.7m Velocity distribution m/sec (m/sec)
Page 75 '20 • KX-T-373 3.6 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.
Page 76 '20 • KX-T-373 FDT36KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow temperature Air flow temperature 14 ℃WB 16 ℃WB...
Page 77 '20 • KX-T-373 FDT45KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow temperature Air flow temperature 14 ℃WB 16 ℃WB...
Page 78 '20 • KX-T-373 FDT56KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow temperature Air flow temperature 14 ℃WB 16 ℃WB...
Page 79 '20 • KX-T-373 FDT71KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow temperature Air flow temperature 14 ℃WB 16 ℃WB...
Page 80 '20 • KX-T-373 FDT90KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow temperature Air flow temperature 14 ℃WB 16 ℃WB...
Page 81 '20 • KX-T-373 FDT112KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow temperature Air flow temperature 14 ℃WB 16 ℃WB...
Page 82 '20 • KX-T-373 FDT140KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow temperature Air flow temperature 14 ℃WB 16 ℃WB...
Page 83 '20 • KX-T-373 FDT160KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow temperature Air flow temperature 14 ℃WB 16 ℃WB...
Page 84 '20 • KX-T-373 (2) Ceiling cassette-4 way compact type (FDTC) FDTC15KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Indoor air temperature temperature Air flow temperature...
Page 85 '20 • KX-T-373 FDTC22KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow temperature Air flow temperature 14 ℃WB 16 ℃WB...
Page 86 '20 • KX-T-373 FDTC28KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow temperature Air flow temperature 14 ℃WB 16 ℃WB...
Page 87 '20 • KX-T-373 FDTC36KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow temperature Air flow temperature 14 ℃WB 16 ℃WB...
Page 88 '20 • KX-T-373 FDTC45KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow temperature Air flow temperature 14 ℃WB 16 ℃WB...
Page 89 '20 • KX-T-373 FDTC56KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Air flow temperature Air flow temperature 14 ℃WB 16 ℃WB...
Page 90 '20 • KX-T-373 (3) Wall mounted type (FDK) FDK15KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Indoor air temperature temperature Air flow temperature...
Page 91 '20 • KX-T-373 FDK22KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB temperature Air flow temperature Air flow 14 ℃WB 16 ℃WB 18 ℃WB...
Page 92 '20 • KX-T-373 FDK28KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB temperature Air flow temperature Air flow 14 ℃WB 16 ℃WB 18 ℃WB...
Page 93 '20 • KX-T-373 FDK36KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air Indoor air temperature 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB temperature Air flow temperature Air flow 14 ℃WB 16 ℃WB 18 ℃WB...
Page 94 '20 • KX-T-373 FDK45KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Indoor air temperature temperature Air flow temperature Air flow 14 ℃WB 16 ℃WB 18 ℃WB...
Page 95 '20 • KX-T-373 FDK56KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Indoor air temperature temperature Air flow temperature Air flow 14 ℃WB 16 ℃WB 18 ℃WB...
Page 96 '20 • KX-T-373 FDK71KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Indoor air temperature temperature Air flow temperature Air flow 14 ℃WB 16 ℃WB 18 ℃WB...
Page 97 '20 • KX-T-373 FDK90KXZE1-W (kW) (kW) Model Cooling Mode Heating Mode Indoor air temperature Outdoor air Outdoor air 21 ℃DB 23 ℃DB 26 ℃DB 27 ℃DB 28 ℃DB 31 ℃DB 33 ℃DB Indoor air temperature temperature Air flow temperature Air flow 14 ℃WB 16 ℃WB 18 ℃WB...
Page 98 '20 • KX-T-373 3.7 Application data 3.7.1 Installation of indoor unit PJF012D057 ①B (1) Ceiling cassette-4 way type (FDT) ●Ins CAUTION ●Co This manual is for the installation of the indoor unit. ○ For electrical wiring work (Indoor unit), refer to page 113. For wired remote control installation, refer to ●...
Page 99 '20 • KX-T-373 2D057 ①Before installation ③Preparation before installation ●Install correctly according to the installation manual. ●If suspension bolt becomes longer, do reinforcement of earthquake resistant. When moving the indoor unit, hold only ●Confirm the following points: ○For grid ceiling the hanging hardware (4 places) only, ○Unit type/Power supply specification with care not to apply forces to any other...
Page 100 '20 • KX-T-373 ⑤Refrigerant pipe (continued) ④Installation of indoor unit (continued) ⑥D ● Protection of the indoor unit Caution: Refrigerating machine oil should not be applied to the threads of union or external surface of flare. It ● If it is not possible to install the panel for a while or if attaching the ceiling board after is because, even if the same tightening torque is applied, the oil is likely to decrease the slide friction installing the indoor unit, protect the indoor unit by using upper carton.
Page 101 '20 • KX-T-373 ⑦Wiring-out position and wiring connection (continued) ⑥Drain pipe (continued) As wide as possible Wiring between indoor Indoor power ●When sharing a drain pipe for more than 1 Single Split (PAC) series VRF (KX) series (about100mm) and outdoor units source line Band Band...
Page 102 '20 • KX-T-373 PJF012D037 • Panel installation Read this manual together with the indoor unit’s installation manual. ⑤ Orientation of the panel installation ⑦ Ele Take note that there is an orientation to install the panel. The wiring WARNING Install the panel with the orientation shown on the right. The connec •...
Page 103 '20 • KX-T-373 ⑦ Electrical wiring ⑨ Installing the inlet grille To attach the inlet grille, follow the procedure described in ③ Removing the inlet grille in the reverse order. The wiring work varies depending on the panel type. Select the wiring work appropriate for the panel type. The connection positions of the indoor unit are as shown below irrespective of the panel type.
Page 104 '20 • KX-T-373 PJF012D512 ①B (2) Ceiling cassette-4 way compact type (FDTC) ●Ins CAUTION ●Co This manual is for the installation of the indoor unit. ○ For electrical wiring work (Indoor unit), refer to page 113. For wired remote control installation, refer to ●...
Page 105 '20 • KX-T-373 2D512 ①Before installation ③Preparation before installation ●Install correctly according to the installation manual. ●If suspension bolt becomes longer, do reinforcement of earthquake resistant. When moving the indoor unit, hold only ○For grid ceiling ●Confirm the following points: the hanging hardware (4 places) only, When suspension bolt length is over 500mm, or the gap between the ceiling and roof is ○Unit type/Power supply specification...
Page 106 '20 • KX-T-373 ⑤Refrigerant pipe (continued) ④Installation of indoor unit (continued) ⑥D ● Protection of the indoor unit Caution: Refrigerating machine oil should not be applied to the threads of union or external surface of flare. It ● If it is not possible to install the panel for a while or if attaching the ceiling board after is because, even if the same tightening torque is applied, the oil is likely to decrease the slide friction installing the indoor unit, protect the indoor unit by using upper carton.
Page 107 '20 • KX-T-373 ⑧Panel installation ⑥Drain pipe (continued) ● When sharing a drain pipe for more than 1 ● Install the panel on the indoor unit after electrical wiring work. As wide as possible (about100mm) unit, lay the main pipe 100mm below the ●...
Page 108 '20 • KX-T-373 ・ Panel installation PJF012D503 PJF012D503 Read this manual together with the indoor unit’s installation manual. * Caution before use <Removal> 3 Removing the inlet grille ①Be careful the installation height when installing the indoor unit. ① While placing a nger behind the stopper (2 places) Also note that the installation height of this indoor unit is different from that of current (old) unit.
Page 109 '20 • KX-T-373 D503 201808 For the Draft prevention panel 6 Orientation of the panel installation Take note that there is an orientation to install the panel. ① (Wiring color: Red, Black) Install the panel with the orientation shown on the right. •...
Page 110 '20 • KX-T-373 FRESH AIR INTAKE (Location for installation) FOR FDTC At the time of installation use the duct hole (cut out) located at the positions shown in follwing diagram, as and when required. (1)Temperature conditions for OA spacer ・Adjust the temperature conditions of mixed air with outdoor air and indoor air within the usage range of suction air temperature for the air-conditioner.
Page 111 '20 • KX-T-373 CHARACTERISTICS OF AIR FLOW IN DIVIDED DUCT FOR FDTC Models FDTC15, 22, 28, 36KXZE1-W All air flow (Hi) All air flow (P-Hi) Main air flow (Hi) Air flow in divided duct (P-Hi) Main air flow (P-Hi) Air flow in divided Air flow in divided duct (P-Hi) duct (Hi)
Page 112 '20 • KX-T-373 (3) Wall mounted type (FDK) ① PHA012D408 This manual is for the installation of an indoor unit. For electrical wiring work (Indoor), refer to page 113. For wired remote control installation, refer to CAUTION page 117. For wireless kit installation, refer to page 311. For electrical wiring work (Outdoor) and refrigerant pipe work installation for outdoor unit, refer to page 12.
Page 113 '20 • KX-T-373 ① Before installation ③ Preparation before installation Front view for installing position and installing space UNIT: mm Install correctly according to the installation manual. Confirm the following points: Type 15−56 Indoor unit Unit type/Power supply specification Pipes/Wires/Small parts Accessory items Installation board (Service space)
Page 114 '20 • KX-T-373 4 Installation of indoor unit (continued) 6 Refrigerant pipe 1. A g Installation Steps Caution Fixing of indoor unit Pass the pipe through the hole ●Be sure to use new pipes for the refrigerant pipes. Use the flare nut attached to the product. 2.
Page 115 '20 • KX-T-373 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.
Page 116 '20 • KX-T-373 3.7.2 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 117 '20 • KX-T-373 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 118 '20 • KX-T-373 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 119 '20 • KX-T-373 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 120 '20 • KX-T-373 3.7.3 Installation of wired remote control (Option parts) P J Z 0 1 2 A 1 7 1 (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...
Page 121 '20 • KX-T-373 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 122 '20 • KX-T-373 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 123 '20 • KX-T-373 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 100m, Item name Q’ty...
Page 124 '20 • KX-T-373 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 125 ブッシングパテでシールすること '20 • KX-T-373 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 126 '20 • KX-T-373 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 127 '20 • KX-T-373 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 128 '20 • KX-T-373 ote controller Connect the remote control cord to the Sheath The range of temperature settin Sheath 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 129 '20 • KX-T-373 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 130 '20 • KX-T-373 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 131 '20 • KX-T-373 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 132 '20 • KX-T-373 4. PIPING SYSTEM All models PCA001Z903...
Page 133 '20 • KX-T-373 5. RANGE OF USAGE & LIMITATIONS System FDC121KXZEN1-W FDC140KXZEN1-W FDC155KXZEN1-W 121KXZES1-W 140KXZES1-W 155KXZES1-W Item Indoor intake air temperature (Upper, lower limits) Outdoor air temperature (Upper, lower limits) Indoor units 1 to 8 units 1 to 10 units 1 to 10 units Number of connected units that can be...
Page 134 '20 • KX-T-373 Operating temperature range Cooling 43°CDB Usage range in cooling -15°CDB Indoor air temperature °CWB Heating Usage range in heating Outdoor air temperature °CWB Decline in cooling and heating capacity or operation stop may occur when the outdoor unit is installed in places where natural wind can increase or decrease its design air flow rate.
Page 135 '20 • KX-T-373 6. SELECTION CHART 4.4 Selection chart (1) Equipment selection flow (1) Equipment selection flow Calculate the load for each room separately, then determine the indoor load. Select an indoor unit that matches the indoor load (tentative). Calculate the temperature compensation, then calculate the indoor unit capacity.
Page 136 '20 • KX-T-373 (2) Capacity calculation method (a) Calculating the indoor unit capacity compensation Indoor unit capacity (cooling, heating) = Indoor unit total rated capacity × Capacity compensation coefficient according to temperature conditions See item (3) (a) concerning the capacity compensation coefficient according to temperature conditions. (b) Calculating the outdoor unit capacity compensation Outdoor Unit Capacity (Cooling, Heating) = Outdoor unit rated capacity (rated capacity when 100% connected) ×...
Page 137 '20 • KX-T-373 • Capacity compensation coefficient according to height difference: 0.97 (calculated according to 15 m difference); (See page 138) 13.1 kW × 0.97 . 12.7 kW • Capacity compensation coefficient according to indoor unit connected total capacity: 1.0 , (56 × 2) / 140 < 100%) No compensation <System cooling capacity>: Item (2) (c) calculation Compare the indoor unit total cooling capacity and the outdoor unit maximum cooling capacity.
Page 138 '20 • KX-T-373 <Outdoor unit maximum heating capacity> : Item (2) (b) calculation • Outdoor unit rated heating capacity: 14.0 kW • Capacity compensation coefficient according to temperature conditions: 0.98 (Calculated according to Outdoor 6˚C WB / Indoor 19˚C DB); (See page 221) Outdoor unit heating capacity: 14.0 kW ×...
Page 139 '20 • KX-T-373 ◆Heating 1.30 Ambient air WB temperature 15˚CWB 1.20 Ambient air WB temperature 10˚CWB 1.10 Ambient air WB temperature 20˚CWB 1.00 Ambient air WB temperature 5˚CWB 0.90 Ambient air WB temperature -5˚CWB 0.80 Ambient air WB temperature 0˚CWB Ambient air WB temperature -10˚CWB 0.70 Ambient air WB temperature -15˚CWB...
Page 140 '20 • KX-T-373 Heating ◆ Ambient air WB temperature -10˚CWB 1.20 Ambient air WB temperature -5˚CWB 1.10 1.00 0.90 0.80 0.70 Ambient air WB temperature 0˚CWB Ambient air WB temperature 5˚CWB 0.60 Ambient air WB temperature -15˚CWB Ambient air WB temperature -20˚CWB 0.50 Ambient air WB temperature 10˚CWB Ambient air WB temperature 15˚CWB...
Page 141 '20 • KX-T-373 (c) When the outdoor unit is located at a lower height than the indoor unit in cooling operation and when the outdoor unit is located at a higher height than the indoor unit in heating operation, the following values should be subtracted from the values in the above table.
Page 142 '20 • KX-T-373 ( f ) The capacity compensation coefﬁcient: Cooling capacity in low temperature under operation of Anti-frost control. ( i ) Indoor fan tap: P-Hi Tota capacity of concurrently operating indoor unit : 20% Outdoor air DB temperature Total capacity of concurrently operating indoor unit : 40%, 50% Outdoor air DB temperature...
Page 143 '20 • KX-T-373 ( ii ) Indoor fan tap: Lo Total capacity of concurrently operating indoor unit : 20%, 40%, 50% Outdoor air DB temperature (℃DB) Total capacity of concurrently operating indoor unit :60%, 80% Outdoor air DB temperature (℃DB) ...
Page 144 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdc is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance...
Page 145 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdh is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance...
Page 146 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdc is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance...
Page 147 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdh is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance...
Page 148 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdc is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance...
Page 149 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdh is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance...
Page 150 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdc is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance...
Page 151 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdh is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance...
Page 152 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdc is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance...
Page 153 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdh is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance...
Page 154 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdc is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance...
Page 155 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdh is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance...
Page 156 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdc is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance of the outdoor unit, with a combination of indoor unit(s) recommended by the manufacturer or importer.
Page 157 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdh is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance of the outdoor unit, with a combination of indoor unit(s) recommended by the manufacturer or importer.
Page 158 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdc is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance of the outdoor unit, with a combination of indoor unit(s) recommended by the manufacturer or importer.
Page 159 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdh is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance of the outdoor unit, with a combination of indoor unit(s) recommended by the manufacturer or importer.
Page 160 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdc is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance of the outdoor unit, with a combination of indoor unit(s) recommended by the manufacturer or importer.
Page 161 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdh is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance of the outdoor unit, with a combination of indoor unit(s) recommended by the manufacturer or importer.
Page 162 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdc is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance of the outdoor unit, with a combination of indoor unit(s) recommended by the manufacturer or importer.
Page 163 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdh is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance of the outdoor unit, with a combination of indoor unit(s) recommended by the manufacturer or importer.
Page 164 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdc is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance of the outdoor unit, with a combination of indoor unit(s) recommended by the manufacturer or importer.
Page 165 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdh is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance of the outdoor unit, with a combination of indoor unit(s) recommended by the manufacturer or importer.
Page 166 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdc is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance of the outdoor unit, with a combination of indoor unit(s) recommended by the manufacturer or importer.
Page 167 (100years) refrigerant Contact details Mitsubishi heavy industries thermal systems,LTD ** If Cdh is not determined by measurement then the default degradation coefficient air conditioners shall be 0,25. *** from 26 September 2018 Where information relates to multi-spilt air conditioners,the test result and performance data be obtained on the basis of the performance of the outdoor unit, with a combination of indoor unit(s) recommended by the manufacturer or importer.
Page 168 Total electric power input 0.020 rated,c elec Sound power level Cooling capacity (latent) 49.0 rated,c (per speed setting,if applicable) Heating capacity rated,h Contact details Mitsubishi heavy industries thermal systems,LTD FDT36KXZE1-W Model(s) : Item Symbol Vaiue Unit Item Symbol Vaiue Unit Cooling capacity (sensible) Total electric power input 0.030...
Page 169 0.140 rated,c elec Sound power level Cooling capacity (latent) 66.0 rated,c (per speed setting,if applicable) Heating capacity 16.0 rated,h Contact details Mitsubishi heavy industries thermal systems,LTD FDT160KXZE1-W Model(s) : Item Symbol Vaiue Unit Item Symbol Vaiue Unit Cooling capacity (sensible) 11.5...
Page 170 Total electric power input 0.030 rated,c elec Sound power level Cooling capacity (latent) 47.0 rated,c (per speed setting,if applicable) Heating capacity rated,h Contact details Mitsubishi heavy industries thermal systems,LTD FDTC22KXZE1-W Model(s) : Item Symbol Vaiue Unit Item Symbol Vaiue Unit Cooling capacity (sensible) Total electric power input 0.030...
Page 171 Total electric power input 0.020 rated,c elec Sound power level Cooling capacity (latent) 54.0 rated,c (per speed setting,if applicable) Heating capacity rated,h Contact details Mitsubishi heavy industries thermal systems,LTD FDK22KXZE1-W Model(s) : Item Symbol Vaiue Unit Item Symbol Vaiue Unit Cooling capacity (sensible) Total electric power input 0.020...
Page 172 Symbol Vaiue Unit Item Symbol Vaiue Unit Cooling capacity (sensible) Total electric power input 0.050 rated,c elec Sound power level Cooling capacity (latent) 61.0 rated,c (per speed setting,if applicable) Heating capacity 10.0 rated,h Contact details Mitsubishi heavy industries thermal systems,LTD...
Page 173 '16 • PAC-T-251 '20 • KX-T-373 1.10 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 8. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 8.1 Remote control (Option parts) 1.10.1 Remote control (1) Wired remote control Wired remote control Model RC-EX3A Model RC-EX3A ⑤ LCD (with backlight) ③...
Page 174 '20 • KX-T-373 '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 175 '16 • PAC-T-251 '20 • KX-T-373 (2) Wireless remote control Wireless remote control Models RCN-E2, RCN-EK2 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...
Page 176 '16 • PAC-T-251 '20 • KX-T-373 1.10.2 Operation control function by the wired remote control 8.2 Operation control function by the wired remote control ●Model RC-EX3A (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 177 '16 • PAC-T-251 '20 • KX-T-373 ●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 178 '20 • KX-T-373 Model RC-E5 (1) Switching sequence of the operation mode switches of remote control COOL HEAT AUTO (2) 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 179 '16 • PAC-T-251 '20 • KX-T-373 11.3 Operation control function by the indoor control Blank page...
Page 180 Heating Forced thermostat '20 • KX-T-373 Indoor return air temperature (℃) 8.3 Operation control function by the indoor control (1) Operations of functional items during cooling/heating Cooling Heating Operation Dehumidifying Thermostat Thermostat Thermostat Thermostat Hot start (Defrost) Functional item Compressor 4-way valve Outdoor unit fan Indoor unit fan...
Page 181 at every time. Note (1) It is necessary to set the clock to use this timer. (vi) Weekly timer '20 • KX-T-373 Set the ON or OFF timer for a week. Up to 8 patterns can be set for a day. The day-off setting is provided for holidays and non-business days.
Page 182 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 '20 • KX-T-373 (iii) From heating thermostat OFF to ON (iv) After completing the defrost operation (only on units with thermostat ON) (b) Contents of operation (i) Indoor fan motor control at hot start 1) Within 7 minutes after starting heating operation, the fan mode is determined depending on the condition of...
Page 183 '20 • KX-T-373 '16 • PAC-T-251 (6) Auto swing control Note Even if [Auto Swing] is selected, the louver position with anti draft function is fixed to position 1. (a) RC-EX3A (i) Louver control 1) T o operate the swing louver when the air-conditioner is operating, press the “Direction” button on the TOP screen of remote control.
Page 184 '20 • KX-T-373 '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 Set room temperature...
Page 185 '20 • KX-T-373 '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 186 '20 • KX-T-373 (10) Drain pump control (Except FDK) (a) This control is operated when the inverter frequency is other than 0 Hz during the cooling operation and automatic cooling and dehumidifying operations. (b) Drain pump ON condition continues for 5 minutes even when it enters the OFF range according to (i) above after turning the drain pump ON, and then stops.
Page 187 To prevent frosting during cooling mode or dehumidifying mode operation, the of compressor speed is reduced if '20 • KX-T-373 the indoor heat exchanger temperature (detected with Thi-R) drops to 1.0 °C or lower at 4 minutes after the start of compressor operation.
Page 188 '20 • KX-T-373 (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) (i) In case of RC-EX3A remote control If you touch the buttons in the order of “Menu”...
Page 189 Blue Blue '20 • KX-T-373 ■ Priority order for combinations of CnT and CnTA input. ■ Priority order for combinations of CnT and CnTA input. CnTA CnTA ① Operation ② Operation ③ Operation ④ Operation ⑤ Cooling/heating ⑥ Cooling/heating ⑦ Emergency ① Operation ② Operation ③ Operation ④...
Page 190 '20 • KX-T-373 (i) In case of “Level input” setting (Factory default) Input signal to CnT-6 or CnTA is OFF→ON …… unit ON Input signal to CnT-6 or CnTA is ON→OFF …… unit OFF Operation is not inverted. CnT-6 or CnTA input CnT-6 or CnTA input Unit A Unit A...
Page 191 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 192 Operation permission permission Operation permission/ Operation( ) prohibition zone prohibition ( ※ ) Operation prohibition zone is determined by the OR judgment between CnT operation prohibition zone and CnTA '20 • KX-T-373 '16 • PAC-T-251 operation prohibition zone. (e) In case of CnT ③ operation permission/prohibition level > CnTA ② operation/stop pulse (20) Temporary stop input CnTA②...
Page 193 '16 • PAC-T-251 '20 • KX-T-373 (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 CnTA)
Page 194 '20 • KX-T-373 Blank page...
Page 195 '20 • KX-T-373 (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%.) (27) Warm-up control (RC-EX3A only) Operation will be started 5 to 60 minutes before use according to the forecast made by the microcomputer which calculates...
Page 196 '20 • KX-T-373 '16 • PAC-T-251 (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 %). ・ 4-operation patterns per day can be set at maximum. ・...
Page 197 '20 • KX-T-373 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 198 '20 • KX-T-373 8.4 Operation control function by the outdoor control (A) Normal control (1) Operation of major functional components under each operation mode Cooling/Dehumidifying Heating Operation mode Compressor Compressor All stop by Compressor Compressor All stop by Functional components remote control remote control Magnetic contactor for...
Page 199 '20 • KX-T-373 (c) Fan control during heating During heating, fan speed is controlled in accordance with the low pressure (sensed by PSL). (i) Initial fan speeds are as follows. • Outdoor fan initial speed during heating Model Speed All models 6th speed (ii) During normal operation, the speed is changed in accordance with the low pressure value.
Page 200 '20 • KX-T-373 (5) Protective control (a) Discharge pipe temperature control If the discharge pipe temperature exceeds 105°C, compressor speed is reduced to suppress the rising of discharge pipe temperature. (i) If the discharge pipe temperature sensor (Tho-D1) detects 115°C or higher for 2 seconds continuously, it makes compressor stopped.
Page 201 '20 • KX-T-373 • Current safe setting value Current safe value [A] Inverter primary (T-phase) current Inverter secondary current Power source Cooling Cooling Heating Heating 1-phase 3-phase 13.5 13.5 11.5 11.5 13.5 ③ Ending condition This control ends when the inverter’s T-phase current or secondary current drops below the current safe setting value minus 1 ampere for 3 minutes continuously or below the current safe setting value in the table shown above for 6 minutes continuously.
Page 202 '20 • KX-T-373 (B) Option controls Outdoor unit control settings can be changed with the DIP switch and 7-segment display PXX setting on the PCB. In changing settings in PXX on the 7-segment display panel, you can use SW8 (increasing a number shown on the 7-segment display panel: one’s place), SW9 (increasing a number shown on the 7-segment display panel: tens place) and SW7 (data write/enter) by pressing them for a prolonged time.
Page 203 '20 • KX-T-373 ② CnZ1 connector: Following functions can be selected by selecting with [P06] on 7-segment display. “0”: Operation output “1”: Error output “2”: Compressor ON output “3”: Fan ON output “4”: Oil return output “5”: Sprinkler output “6” - “9”: Spare (1) External input and demand input (a) Operation permission and prohibition modes (Note) With 7-segment display [P07]-[0]...
Page 204 '20 • KX-T-373 6) The operation status when changing from operation prohibition to operation permission can be set by 7-segment [P37]. [P37]=0: Operation stopped [P37]=1: Restart the indoor unit that was operating before the operation was prohibited. (b) Demand control (Note) With 7-segment [P07] = [1] 1) Demand control and normal operation are switched with the connector (CnS1) and the jumper wire (J13) on the outdoor unit PCB.
Page 205 '20 • KX-T-373 ② J13 - Open Demand control Demand control CnS1 input PUSH PUSH PUSH PUSH Remote control operation Remote Remote control display Air-conditioner operation/stop Compressor OFF Compressor OFF (2) Silent mode control (Note) With 7-segment display [P07]-[3] for silent mode 1 or with 7-segment display [P07]-[8] for silent mode 2 (a) Starting conditions (i) When the strat command of silent mode input from indoor unit or from external input terminal of outdoor...
Page 206 '20 • KX-T-373 (Sound power PWL silent mode level) [dB(A)] Model [dB(A)] Cooling & Heating Cooling Heating Cooling Heating setting 0 setting 1 setting 2 setting 3 setting 0 setting 1 setting 2 setting 3 setting 0 setting 1 setting 2 setting 3 FDC121KXZEN1-W 0.96 0.78...
Page 207 '20 • KX-T-373 (4) External output This function is used in order to operate the external option devices in conjunction with relay outputs of the respective operation information from outdoor unit. [External output function] External output function of CnZ1 can be switched by changing of [P06] on 7-segment display as mentioned below. 0: Operation output •...
Page 208 '20 • KX-T-373 (iii) Except 0% of energy saving ratio, the following controls take precedence over this control. • 4-way valve switching safeguard • Defrost operation • Oil return control • Pump down operation control at removal of the unit •...
Page 209 '20 • KX-T-373 (iii) During the pump down operation control, the protective controls (excluing low pressure protective control, anomalous low pressure control and pressure ratio protection control) and the error detection control are effective. (iv) The sub-cooling coil expansion valve (EEVSC) closes fully during the pump down control. (c) Ending conditions If any of the following conditi (i) If a low pressure (LP)
Page 210 '20 • KX-T-373 Pump down external input Activate by 7-segment:[P75]=“1” Emergency call => External oper : Opened Gas leakage Alarm unit Pump down oper on <== (10) Outdoor operation mode On the standard models of 2-pipe system, the outdoor operation mode of Stop/Cooling/Heating is selected based on the information of indoor units, and then respective controls are performed.
Page 211 '20 • KX-T-373 ・ Priority of required major operation mode: i t a l a t i t a s t i larger. There is no renewed judgment for 10 minutes after a change on the operation mode. The judgment, however, is renewed in following cases. At the stop When the P01 setting is changed.
Page 212 '20 • KX-T-373 5) Reset of unmatched condition (Cooling/heating unmatched) When unmatch occurs among indoor units, it can be reset by either one of followings. ① If the operation mode of outdoor unit is matched with that of indoor unit. ②...
Page 213 '20 • KX-T-373 (12) Forced oil return input (Note) With 7-segment [P07] = [4] The oil return control is forced by an external signal. <Starting conditions> (i) When the outdoor operation mode is "Operation" (ii) Compressor ON (iii) When [P07] = [4] and CnS1 is shorted However, defrosting does not occur until (4) Defrost operation (a) Starting conditions (i) - (iv) are met.
Page 214: 7-Segment Display: E56
'20 • KX-T-373 (C) Data output (1) 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 215 '20 • KX-T-373 (ii) When the temperature is below -10.0°C for the display of discharge pressure saturated temperature and suction pressure saturated temperature, the fraction after decimal point is rounded up. (Because the range of 7-segment display is 3-digit.) (iii) Precedence of display ①...
Page 216 '20 • KX-T-373 (b) List of 7-segment displays Code No. Contents of display Data display range Minimum unit Remarks Error display [EXX] Caution [oPX] display [PdS][PdE][CHx][CHE] Special display [CHL][CHU][CHJ][CHO] and etc. Code No. Contents of data display Data display range Minimum unit Remarks <Sensor value, actuator information>...
Page 217 '20 • KX-T-373 Code Minimum Contents of data display Data display range Remarks unit Order of 100: 63H1-1 C30 Pressure switch – Order of 10: (Spare) (0: Close, 1: Open) Order of 1: (Spare) Order of 100: CnS1 C31 External input –...
Page 218 '20 • KX-T-373 Code Minimum Contents of data display Data display range Remarks unit C56 Target Fk 0 - 999 C57 Inverter 1 operation frequency command 0 - 130 C58 Demand ratio 0 - 100 1％ C59 FMo1 Fan Speed command 0 - 999 10min C60 (Spare)
Page 219 '20 • KX-T-373 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 ③ Counter · Anomalous low pressure (During 0 - 5 operation)
Page 220 '20 • KX-T-373 Code Minimum Contents of data display Data display range Remarks unit <User setting> 0 : Invalid 0 : (Factory default) P00 Continuous heating operation control – 1 : Defrost interval extension control 0,1,2 2 : Continuous heating control 0: First unit's operation mode 0 : (Factory default) 1: Last unit's operation mode...
Page 221 '20 • KX-T-373 Code Minimum Contents of data display Data display range Remarks unit 0 : (Factory default) P37 Operation permission/ – Refer to (B)(1) prohibition setting 0 : (Factory default) P38 Forced cooling/ – Refer to (B)(6) heating operation setting 0 : (Factory default) P39 VTCC setting –...
Page 222 '20 • KX-T-373 (c) Saving of operation data Mainly for investigating 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 RS-232C connector of PCB and utilized for identifying causes.
Page 223 '20 • KX-T-373 Record data Code Write-in content Data write-in Number of Write-in unit Content range bytes Heating operation 1-speed Heating operation 2-speed Heating operation 3-speed Heating operation 4-speed Heating operation 5-speed Heating operation 6-speed Indoor unit 1 Demand frequency 0~255 1 Hz Indoor unit 1 Answer frequency...
Page 224: Tho-P1
'20 • KX-T-373 <Outdoor unit indicate data> Code Record data Number of Write content Unit of write Content 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 225 '20 • KX-T-373 Code Record data Unit of Number of Write content Content Data write range write bytes FM01 Fan speed command 0 - 65535 10min (Spare) EEVH1 opening degree 0 - 65535 1 pulse EEVSC opening degree 0 - 65535 1 pulse Compressor target cooling low 0.00 - 2.00...
Page 226 '20 • KX-T-373 Code Record data Unit of Number of Write content Content Data write range write bytes DIP switch [SW6] – – Bit0 (Spare) Bit1 (Spare) Bit2 (Spare) Bit3 (Spare) Bit4 (Spare) Bit5 (Spare) Bit6 (Spare) Bit7 (Spare) Jumper wire –...
Page 227 '20 • KX-T-373 Code Record data Unit of Number of Write content Content Data write range write bytes <Control status> Control status 0 - 2 – None Oil return Oil return ON Control status 0 - 3 – None Defrost condition Temperature condition Time condition Control status...
Page 228 '20 • KX-T-373 Code Record data Unit of Number Write content Content Data write range write of bytes <Protection control status> Protection control HP protection 1 Bit0 0: Normal, 1: Implementing Status 1 Compressor capacity control HP protection 2 Bit1 0: Normal, 1: Implementing Indoor EEV minimal opening control at heating stop...
Page 229 '20 • KX-T-373 Code Record data Unit of Number of Write content Content 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 230 '20 • KX-T-373 Code Record data Unit of Number Write content Content Data write range write of bytes <Other> <Indoor unit information> Bit0 (Spare) Bit1 (Spare) Bit2 (Spare) Bit3 (Spare) Bit4 (Spare) Bit5 (Spare) Bit6 (Spare) Bit7 (Spare) Registered indoor 1 – 8 operation 0 - 4 –...
Page 231 '20 • KX-T-373 Code Record data Unit of Number Write content Content Data write range write of bytes 112 Registered indoor 1 – 8 – – Bit0 Indoor 1 unmatch check error 0 : OFF, 1 : ON unmatch check error Bit1 Indoor 2 unmatch check error 0 : OFF, 1 : ON...
Page 232 '20 • KX-T-373 (2) Outdoor unit PCB setting Code Input Remark Outdoor address No. (Order of 10) Outdoor address No. (Order of 1) Inspection LED reset SW3-1 Forced heating/cooling SW3-7 Test run switch SW5-1 Test run Heating/Cooling SW5-2 Pump down switch SW5-3 Data erase/Write 7-segment display code No.
Page 233 '20 • KX-T-373 9. SYSTEM TROUBLESHOOTING PROCEDURE 9.1 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 234 '20 • KX-T-373 9.2 Explanation of troubleshooting • Inspection of short-circuit on the power transistor module terminals Disconnect the wiring of compressor, P and N (TB5-9 in inverter PCB) and check for short-circuit with a tester. Inspect between terminals of: P-U, P-V, P-W, N-U, N-V, N-W and P-N (Replace the P and N as P3 and N3 respectively in single phase model.) Terminal (+) Terminal (-)
Page 235 '20 • KX-T-373 9.3 Contents of troubleshooting (a) List of inspection displays 1) Indoor and outdoor units Remote 7-segment control Name of inspection Classification Page display error code None Operates but does not cool System error None Operates but does not heat System error None Earth leakage breaker activated...
Page 236 '20 • KX-T-373 Remote 7-segment control Name of inspection Classification Page display error code Outdoor DC fan motor anomaly DC fan motor error Low pressure error System error Suction pipe temperature sensor anomaly (Tho-S) Sensor wire breakage High pressure sensor anomaly (PSH)/Low pressure sensor Sensor wire breakage anomaly (PSL) Power transitor temperature sensor anomaly (Tho-P1)
Page 237 '20 • KX-T-373 (b) Troubleshooting Troubleshooting Green Error code Content Keeps flashing Stays Off Indoor None Remote control: Operates but does not cool 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 238 '20 • KX-T-373 Green Error code Content Keeps flashing Stays Off Indoor Remote control: None Operates but does not heat 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 239 '20 • KX-T-373 Green Error code Content Stays Off Stays Off Indoor Remote control: None Earth leakage breaker activated 7-segment display: Stays Off Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the checked result of insulation resistance Replace compressor.
Page 240 '20 • KX-T-373 Green Error code Content – – Indoor Remote control: None Excessive noise/vibration (1/3) 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 241 '20 • KX-T-373 Green Error code Content – – Indoor Remote control: None Excessive noise/vibration (2/3) 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 242 '20 • KX-T-373 Green Error code Content – – Indoor Remote control: None Excessive noise/vibration (3/3) 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 243 '20 • KX-T-373 Green Content Error code Louver motor anomaly Keeps flashing Stays OFF Indoor None Remote control: 7-segment display : 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 244 '20 • KX-T-373 Green Error code Content Power source system anomaly Stays OFF Stays OFF Indoor Remote control: None (Power source to indoor unit PCB) 7-segment display: Stays OFF Outdoor 5. Troubleshooting 1. Applicable model FDT, FDTC, FDK series only Diagnosis Countermeasure AC 220-240V...
Page 245 '20 • KX-T-373 Green Error code Content Power source system anomaly Stays OFF Indoor Remote control: None (Power source to remote control) 7-segment display: Outdoor 5. Troubleshooting 1. Applicable model FDT, FDTC, FDK series only Diagnosis Countermeasure Is the connection of the Correct.
Page 246 '20 • KX-T-373 Green Error code Content Remote control: Indoor Keeps flashing Stays Off /Searching IU /Searching IU (1) WAIT WAIT 7-segment display: Outdoor 5. Troubleshooting 1. Applicable model Remote control and indoor units Diagnosis Countermeasure (In case that WAIT /Searching IU is kept on displaying on the remote control /Searching IU is...
Page 247 '20 • KX-T-373 Green Content Error code Keeps flashing Stays OFF Indoor Remote control: WAIT WAIT 7-segment display: 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 248 '20 • KX-T-373 Green Content Error code Keeps flashing Stays OFF Indoor Remote control: 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 control for more than 2 minutes is kept on WAIT...
Page 249 '20 • KX-T-373 Green Error code Content Stays OFF Stays Off Indoor 〔 No display 〕 Remote control: [No display] 7-segment 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 250 '20 • KX-T-373 Green Error code Content Remote control Stays Off Indoor Remote control: communication error 7-segment display: Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is it possible to Malfunction by noise reset normally by the power Check peripheral source reset? environment.
Page 251 '20 • KX-T-373 Green Error code Content Keeps flashing Keeps flashing Indoor Remote control: Duplicated indoor unit address 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 252 '20 • KX-T-373 Green Error code Content Keeps flashing 2 times flash Indoor Remote control: E3/5 Outdoor unit signal line error 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 253 '20 • KX-T-373 Green Error code Content Keeps flashing *See below Indoor Remote control: Communication error during operation 7-segment display: Keeps flashing 2 time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure * In case that indoor unit red LED flashes 2 times Note (1) Check the connection (disconnection, looseness) of signal wires at outdoor unit terminal block Is the...
Page 254 '20 • KX-T-373 Green Indoor unit heat exchanger Content Error code Keeps flashing 1-time flash Indoor Remote control: temperature sensor anomaly (Thi-R) 7-segment display: Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure the connector of Insert the connector temperature sensor securely.
Page 255: Sensor Anomaly (Tho-P1)
'20 • KX-T-373 Green Indoor return air Content Error code Keeps flashing 1-time flash Indoor Remote control: temperature sensor 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 temperature sensor connected...
Page 256 '20 • KX-T-373 Green Error code Content Keeps flashing 1 time flash Indoor Remote control: Drain trouble 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model FDT and FDTC series Diagnosis Countermeasure Check the error data in the remote control. Is there any overflow? Is DC 12V detected at CnI...
Page 257 '20 • KX-T-373 Green Error code Content Excessive number of indoor units (more than 17 units) Keeps flashing Stays Off Indoor Remote control: by controlling one remoto control 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure...
Page 258 '20 • KX-T-373 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 7-segment display: Keeps flashing Stays OFF Outdoor...
Page 259 '20 • KX-T-373 Green Content Error code Address setting error Keeps flashing Keeps flashing Indoor Remote control: by mixed setting method 7-segment display: Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the automatic setting and Review address setting.
Page 260 '20 • KX-T-373 Green Content Error code Indoor DC fan motor anomaly Keeps flashing 1-time flash Indoor Remote control: 7-segment display: Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model FDT, FDTC, FDK series only Diagnosis Countermeasure Does any foreign material Remove foreign material.
Page 261 '20 • KX-T-373 Green Error code Content Indoor unit operation check, Keeps flashing 1 time flash Indoor Remote control: drain pump 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...
Page 262 '20 • KX-T-373 Green Content Error code Indoor DC fan motor rotation Keeps flashing 1-time flash Indoor Remote control: speed anomaly 7-segment display: Keeps flashing Stays OFF Outdoor 5. Troubleshooting 1. Applicable model FDT, FDTC, FDK series only Diagnosis Countermeasure Does any foreign material Remove foreign material.
Page 263 '20 • KX-T-373 Green Content Error code Remote control Keeps flashing Stays OFF Indoor Remote control: temperature sensor 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 temperature sensor connected securely.
Page 264 ‘20 • KX-T-373 '20 • KX-T-373 Green Error code Content Keeps flashing Stays Off Indoor Remote control: EEVKIT False connection detection 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Reset the power source. E30 is displayed.
Page 265: Check And Save The Data Of Operating Condition
'20 • KX-T-373 Green Error code Content Stays Off Indoor Remote control: Duplicated outdoor unit address No. 7-segment display: Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition. Check the conditions whether it occurs immediately after the power Save data for 30 minutes before...
Page 266: Pcb
'20 • KX-T-373 Green Open L3 Phase on Error code Content power source at primary side Keeps flashing Stays Off Indoor Remote control: (3 phase model only) 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure...
Page 267 '20 • KX-T-373 Green Error code Content Discharge pipe temperature Stays Off Indoor Remote control: error (Tho-D1) 7-segment display: 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 268 '20 • KX-T-373 Outdoor unit heat exchanger Green Error code Content temperature sensor (Tho-R) and subcooling coil Keeps flashing Stays Off Indoor Remote control: temperature sensor (Tho-SC,-H) anomaly 7-segment display: Keeps flashing Outdoor *1 One time flash (Tho-R), 5 time flash (Tho-SC), 6 time flash (Tho-H) 5.
Page 269 '20 • KX-T-373 Green Error code Content Outdoor air temperature Keeps flashing Stays Off Indoor Remote control: sensor 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 270 '20 • KX-T-373 Green Error code Content Discharge pipe temperature Keeps flashing Stays Off Indoor Remote control: sensor anomaly (Tho-D1) 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 271 '20 • KX-T-373 Green Error code Content High pressure anomaly Keeps flashing Stays Off Indoor Remote control: (63H1-1 activated) 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 272 '20 • KX-T-373 Green Error code Content Stays Off Indoor Remote control: Current cut (1) 7-segment display: Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Is the Check power source. power source voltage OK? 2. Error detection method Are the Open the valves.
Page 273 '20 • KX-T-373 '20 • KX-T-373 Green Error code Content Stays Off Indoor Remote control: Current cut (2) 7-segment display: Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Continue from previous page Single phase model Three phase model Is DC15V output OK? Replace control PCB.
Page 274 '20 • KX-T-373 Excessive number of indoor units Green Error code Content connected, excessive total capacity of connection, Stays Off Indoor Remote control: communication error from outdoor unit to indoor unit 7-segment display: Stays Off*1 Outdoor 2 times flash : Excessive total capacity of connection, 3 time flash : Communication error from outdoor unit to indoor unit 5.
Page 275 '20 • KX-T-373 Green Error code Content Stays Off Indoor Remote control: 7-segment display: 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 ROM version.
Page 276 '20 • KX-T-373 Green Error code Content Communication error between Stays Off Indoor Remote control: inverter PCB and outdoor unit control PCB(1) 7-segment display: 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.
Page 277 '20 • KX-T-373 '20 • KX-T-373 Green Error code Content Communication error between Stays Off Indoor Remote control: inverter PCB and outdoor unit control PCB (2) 7-segment display: Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure In case of: LED on inverter PCB stays OFF [For single phase model] From previous page.
Page 278 '20 • KX-T-373 Green Error code Content Mixed address setting methods Stays Off Indoor Remote control: coexistent in same network 7-segment display: Stays Off Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition.
Page 279 '20 • KX-T-373 '20 • KX-T-373 Green Error code Content Stays Off Indoor Remote control: Outdoor DC fan motor anomaly 7-segment display: 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.
Page 280 '20 • KX-T-373 Green Error code Content Stays Off Indoor Remote control: Low pressure error 7-segment display: 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 error status.
Page 281: Characteristics Of Sensor Ok?
'20 • KX-T-373 Green Error code Content Suction pipe temperature sensor anomaly Stays Off Indoor Remote control: (Tho-S) 7-segment display: 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 conditions whether it occurs immediately after the...
Page 282 '20 • KX-T-373 Green Error code Content High pressure sensor anomaly (PSH) / Keeps flashing Stays Off Indoor Remote control: 7-segment display: Low pressure sensor anomaly (PSL) Keeps flashing Outdoor *1 1 time flash (PSL), 2 time flash (PSH) 5. Troubleshooting 1.
Page 283 '20 • KX-T-373 Green Error code Content Power transitor temperature Keeps flashing Stays Off Indoor Remote controller: sensor anomaly (Tho-P1) 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 284 ‘19 • KX-T-373 '20 • KX-T-373 Green Error code Content Anomalous compressor Keeps flashing Stays Off Indoor Remote control: by loss of synchronism 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 285 '20 • KX-T-373 Green Error code Content Stays Off Indoor Remote control: Compressor startup failure 7-segment display: Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of Save data for 30 minutes before stoopping in Mente PC. operating conditions.
Page 286 '20 • KX-T-373 Green Error code Content Keeps flashing Stays Off Indoor Remote control: Emergency stop 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 287 '20 • KX-T-373 9.4 Outdoor unit control PCB replacement procedure PCA012D098 (a) Control PCB 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: ！...
Page 288 '20 • KX-T-373 (b) Invereter PCB PCA012D025K 1) FDC121, 140, 155KXZEN1-W model 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: ！ WARNING Indicates an imminently hazardous situation which will result in death or serious injury if proper safety procedures and instructions are not adhered to.
Page 289 '20 • KX-T-373 After elapsing 3 minutes *Presence and shape of electric component from power OFF may vary according to model. Confirm the voltage (DC) is under 30 V N.F. PCB Control PCB between No.1 and No.3 on CNA1 White wiring CNQ1 CNN1 Band...
Page 290 '20 • KX-T-373 2. Exchange 2.1 Remove the screw from support panel and rotate the support panel to counterclockwise direction as shown in Fig.5. (By doing so, you can see the locking spacer of the inverter PCB.) 2.2 Disconnect the connectors and round terminals, and remove the screws on the IPM (IC2) as shown in (D) in Fig.6. 2.3 Remove the inverter PCB.
Page 291 '20 • KX-T-373 *Presence and shape of electric component Parts No. may vary according to model. TB10 TB11 CNCAN CNI2 ** CNACT1 **TB9 CNI4 ** **TB8 **TB7 Connectors are not ** These connectors and round terminals JSW11 half inserted JSW10 are disconnected in 1.8.
Page 292 '20 • KX-T-373 2) FDC121, 140, 155KXZES1-W model PCA012D025F a) Exchange the PCB after elapsing 3 minutes from power OFF. (Be sure to measure voltage (DC) on both capacitor terminals located in control back, and check that the voltage is discharged sufficiently.(Refer to Fig.2)) b) Take off the connection of inverter PCB terminal block connector and remove the screw of power transistor then c) Refer to table1 for the setting of switch (JSW10,11) of new PCB.
Page 293 '20 • KX-T-373 ■Function of DIP switch for contol (SW3, 4, 5) • SW3 (Function setting) • SW4 (Power source voltage) FDC121KXZEN1-W FDC121KXZES1-W Switch Function Model FDC140KXZEN1-W FDC140KXZES1-W Switch Inspection LED reset FDC155KXZEN1-W FDC155KXZES1-W SW3-1 Normal SW4-4 Forced cooling/heating • SW4 (Change demand ratio) SW3-7 Normal Switch...
Page 294 '20 • KX-T-373 ■ Inverter checker for diagnosis of inverter output ● Checking method (a) Setup procedure of checker. 1) Power OFF (Turn off the breaker). 2) Remove the terminal cover of compressor and disconnect the wires (U, V, W) from compressor. 3) Connect the wires U (Red) , V (White) and W (Black) of checker to the terminal of disconnected wires (U, V, W) from compressor respectively.
Page 295 '20 • KX-T-373 277-1...
Page 296 '20 • KX-T-373 277-2...
Page 297 '20 • KX-T-373 9.5 Indoor unit control PCB replacement procedure PSC012D050B (1) FDT, FDTC 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. Both mentions the important items to protect your health and safety so strictly follow them by any means.
Page 298 '20 • KX-T-373 (2) FDK series PHA012D050AA (a) FDK15-56KXZE1-W 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 299 '20 • KX-T-373 PHA012D051AA (b) FDK71KXZE1-W 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 300 '20 • KX-T-373 (3) 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 301 '20 • KX-T-373 10. OUTDOOR UNIT DISASSEMBLY PROCEDURE 6. OUTDOOR UNIT DISASSEMBLY PROCEDURE PCA012D088 DISASSEMBLY PROCEDURE Precautions for safety Read these "Precautions for safety" carefully before starting disassembly work and do it in the proper way. When disassembling, be sure to turn oﬀ the power. When disassembling the electrical components, check the electrical wiring diagram. The electrical components are under high voltage by the operation of the booster capacitor.
Page 302 '20 • KX-T-373 PROCEDURE & PICTURES 9. To remove the compressor (CM) (1) Remove the service panel.(See No.1) (2) Remove the insulation which covers compressor. (Strings (a) (c) should be loosen.) (3) Remove the terminal cover ﬁxing bolt and remove it, and disconnect the power wiring. (4) Remove welded part of compressor by welding.
Page 303 '20 • KX-T-373 11. INDOOR UNIT DISASSEMBLY PROCEDURE PJF012D045 . INDOOR UNIT DISASSEMBLY PROCEDURE (1) FDT series DISASSEMBLY PROCEDURE Precautions for safety Read these "Precautions for safety" carefully before starting disassembly work and do it in the proper way. When disassembling, be sure to turn oﬀ the power. When disassembling the electrical components, check the electrical wiring diagram. The electrical components are under high voltage by the operation of the booster capacitor.
Page 304 '20 • KX-T-373 PROCEDURE & PICTURES Pipe lid To remove the heat exchanger assembly (1) Remove the drain pan.(See No.4) (2) Remove 2 pipe lid ﬁxing screws and remove it.( mark) (3) Remove 3 heat exchanger assembly ﬁxing screws and remove it.( mark) Coil of EEV 8.
Page 305 '20 • KX-T-373 (2) FDTC series PJA012D792A PJA012D792A DISASSEMBLY PROCEDURE Precautions for safety Read these "Precautions for safety" carefully before starting disassembly work and do it in the proper way. ● When disassembling, be sure to turn oﬀ the power. When disassembling the electrical components, check the electrical wiring diagram. ●...
Page 306 '20 • KX-T-373 PJA012D792A PROCEDURE & PICTURES 6. To remove the temperature sensors (example"Thi-R1") (1) Remove the lid of control box.(See No.1) (2) Disconnect the temperature sensors connector(CNNx). (3) Remove the drain pan.(See No.3) (4) Pull out the temperature sensors "Thi-R1" from the sensor holder. 7.
Page 307 '20 • KX-T-373 (3) FDK series PHA012D402...
Page 308 '20 • KX-T-373 [Removing the Control] Screw the control toward right...
Page 309 '20 • KX-T-373...
Page 310 '20 • KX-T-373...
Page 311 '20 • KX-T-373 (4) Panel PSC012D109A PSC012D109A DISASSEMBLY PROCEDURE Precautions for safety Read these "Precautions for safety" carefully before starting disassembly work and do it in the proper way. ● When disassembling, be sure to turn off the power. When disassembling the electrical components, check the electrical wiring diagram. ●...
Page 312 '20 • PAC-T-352 '20 • KX-T-373 5. WIRELESS KIT FDT series(RCN-T-5BW-E2, RCN-T-5BB-E2) 12. OPTION PARTS (1) Speciﬁcation 12.1 Wireless kit (1) FDT series(RCN-T-5BW-E2, RCN-T-5BB-E2) (a) Specification Installation position of wireless kit Installation of wireless kit Receiver Do not install the wireless kit at the following places in order to avoid malfunction.
Page 313 '20 • KX-T-373 5.1 WIRELESS KIT (RCN-T-5AW-E2) (b) Installation manual Notes: ● 1.Following function of FDT indoor unit series are not able to be set with this wireless remote control. • Individual flap control system ● PJF012D035 2.This wireless remote control can operate the prevention function without connecting the wired remote control. PJF012D035C Safety precautions ●...
Page 314 '20 • KX-T-373 WARNING ● Do not wash the unit with water. ● Use the cables for wiring, and connect them securely with care to protect 2D035 electronic parts from external forces. ● When installing the unit at a hospital, telecommunication facility, etc., take measures to suppress electric noises.
Page 315 It could cause electric shocks. '20 • KX-T-373 ③ ② Preparation before installation (continued) To change setting Master/Slave setting when using Installat plural remote controls 1. Remove the cover by unscrewing two screws from the back of receiver. 2. Change the setting by the switch on PCB. ①...
Page 316 '20 • KX-T-373 ③ How to install the receiver(continued) n using Installation of the receiver ① ② Put the wiring of the receiver through the opening. ol can indoor ③ Put the wiring on the notch on the control box so as not to be pinched by the control box and lid as shown below.
Page 317 '20 • KX-T-373 ④ ④ Wireless remote control 2. Setti Installation tips for the remote control holder Fix the remote control holder using the screws supplied with this product. Button * Precautions for installing the holder FAN SPEE Holder for ●...
Page 318 '20 • KX-T-373 ④ Wireless remote control (continued) 2. Setting details The following functions can be set. Button Number indicator Function setting Fan speed setting : Standard FAN SPEED Fan speed setting : Setting 1 * control Fan speed setting : Setting 2 * Room heating temperature adjustment : Disable Room heating temperature adjustment : +1°C MODE...
Page 319 '20 • KX-T-373 ⑤ ⑤ Receiver 2. Corre 1 Control plural indoor units with one remote control Restrictions on the thickness and length of wire and re (Maximun total extension 600m.) Up to 16 indoor units can be connected. The d Standard Within 0.3 mm²...
Page 320 '20 • KX-T-373 ⑤ Receiver (continued) 2. Correlation between illuminance at the receiver The receivable area of the h of wire and reachable area of the signal in a plain view. signal when the illuminance at the receiver is 300lux The drawing in the right shows the correlation between the reachable area of the signal and illuminance at the receiver when the remote...
Page 321 '20 • KX-T-373 '20 • PAC-T-352 5. WIRELESS KIT FDTC series(RCN-TC-5AW-E3) (2) FDTC series(RCN-TC-5AW-E3) (1) Speciﬁcation (a) Specification Installation position of wireless kit Installation of wireless kit Receiver Do not install the wireless kit at the following places in order to avoid malfunction. (1)Places exposed to direct sunlight (2)Places near heat-generating devices (3)High humidity places...
Page 322 PJF012D506 '20 • KX-T-373 (b) Installation manual PJF012D506B Safety precautions •Please read this manual carefully before starting installation work to install the unit properly. All of the following are 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 323 '20 • KX-T-373 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 with electronic parts from external forces. * Pr Improper connections or fixing could cause heat generation, fire, etc. • A • When installing the unit at a hospital, telecommunication facility, etc., take •...
Page 324 '20 • KX-T-373 ② Preparation before installation (continued) To change setting Master/Slave setting when using 1. Change the setting of switches on the accessory PCB. multiple remote controls Up to two receivers or wired remote controls can be installed on one indoor unit group.
Page 325 '20 • KX-T-373 ③ How to install the receiver(continued) Installation of the receiver ① Connect the wire connector (Communication) to CNB on PCB. ② Connect the wire connector (Receiver) to CN3 on PCB. ③ Install the PCB mounting supports on the bracket (Sheet metal). ④...
Page 326 '20 • KX-T-373 ④ Wireless remote control Installation tips for the remote control holder Fix the remote control holder using the screws supplied with this product. * Precautions for installing the holder Holder for Wood screw • Adjust the position so that it is upright. remote control •...
Page 327 '20 • KX-T-373 ④ Wireless remote control (continued) 2. Setting details The following functions can be set. Button Number indicator Function setting Fan speed setting : Standard FAN SPEED Fan speed setting : Setting 1 * Fan speed setting : Setting 2 * Room heating temperature adjustment : Disable Room heating temperature adjustment : +1°C MODE...
Page 328 '20 • KX-T-373 ⑤ Receiver 1 Control multiple indoor units with one remote control Restrictions on the thickness and length of wire (Maximum length is 600m.) Up to 16 indoor units can be connected. Standard Within 0.3 mm² × 100m 1.
Page 329 '20 • KX-T-373 ⑤ Receiver (continued) 2. Correlation between illuminance at the The receivable area of the receiver and reachable area of the signal signal when the illuminance in a plain view. at the receiver is 300lux The drawing in the right shows the correlation between the reachable area of the signal and illuminance at the receiver when the remote control is...
Page 330 PHA012D049 WIRELESS REMOTE RCN-K-E2 '20 • KX-T-373 RCN-K71-E2 201612 CONTROLLER&RECEIVER (3) FDK series (RCN-K-E2∙RCN-K71-E2) INSTALLATION MANUAL 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 331 '20 • KX-T-373 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 332 '20 • KX-T-373 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 333 '20 • KX-T-373 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 PCB. (b) Remove the louver wiring hanging on display holder. (c) Remove the latches of display holder and then display holder can be removed.
Page 334 '20 • KX-T-373 ③ ③ ④ 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 Control-Assy Control-Assy * No...
Page 335 '20 • KX-T-373 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 336 Cutting Cutting '20 • KX-T-373 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 indoor unit numbers so that they are not duplicated.
Page 337 '20 • KX-T-373 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 338 '20 • KX-T-373 '20 • PAC-T-352 12.2 Motion sensor kit 6. MOTION SENSOR KIT (1) FDT series(LB-T-5BW-E, LB-T-5BB-E) FDT series(LB-T-5BW-E, LB-T-5BB-E) (a) Specification (1) Speciﬁcation Motion sensor kit Installation position of motion sensor kit Motion sensor Refrigerant pipe Drain pipe Note (1) Motion sensor must be installed to the position as shown.
Page 339 PJF012D036 '20 • KX-T-373 201609 (b) Installation manual PJF012D036 WARNING Inst ● Connect the wiring to the PCB in the control box on the indoor unit and hold the wiring ① Loo securely so as not to apply unexpected stress on the PCB. ②...
Page 340 Motion sensor '20 • KX-T-373 Installing the motion sensor It is possible to install the motion sensor by replacing with a corner lid on the panel. The mo Aim of the detectable scope Set the Refer to Indoor unit Note: It Hight of the ceiling Detectable scope①...
Page 341 D036 201609 '20 • KX-T-373 Installation of the motion sensor ① Loosen the bolts which fix the panel, and make a gap between the panel and the indoor unit. ② Pass the wiring of the motion sensor through the opening of the panel. ③...
Page 342 '20 • KX-T-373 '20 • PAC-T-352 6. MOTION SENSOR KIT (2) FDTC series(LB-TC-5W-E) (a) Specification FDTC series(LB-TC-5W-E) (1) Speciﬁcation Motion sensor kit Installation position of motion sensor kit Motion sensor Drain pipe Refrigerant pipe Note (1)Motion sensor must be installed to the position as shown.
Page 343 PJF012D504 '20 • KX-T-373 (b) Installation manual PJF012D504 WARNING ● Connect the wiring to the PCB in the control box on the indoor unit and fix the wiring ① Cu securely so as not to apply unexpected stress on the PCB. ②...
Page 344 Motion sensor '20 • KX-T-373 Installing the motion sensor It is possible to install the motion sensor by replacing the corner lid on the panel. The detectable area Indoor unit The motion Set the func Refer to the Note: It is no Wired Wirele Height of the ceiling...
Page 345 12D504 '20 • KX-T-373 Installation of the motion sensor ① Cut the half blanking (4 sections) of the panel as shown in the following figure. ② Pass the motion sensor wiring through the opening of the panel. ③ Connect the wiring connector to CnL (3P, black) on the PCB in the control box. ④...
Page 346 '20 • KX-T-373 Setting the motion sensor The motion sensor will not function if it is only installed. Set the function of the motion sensor by the wired or wireless remote control. Refer to the manual instruction of each remote control for the setting procedure. Note: It is not possible to set by the following remote control models or older ones.
Page 347 '20 • KX-T-373 12.2 Motion sensor kit (LB-KIT2) (3) FDK series(LB-KIT2) (a) Specification PJZ000Z341 (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...
Page 348 '20 • KX-T-373 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 349 '20 • KX-T-373 (b) 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 350 '20 • KX-T-373 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 351 '20 • KX-T-373 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 352 '20 • KX-T-373 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 353 '20 • KX-T-373 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 354 '20 • KX-T-373 <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 355 '20 • KX-T-373 (4) 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 356 '20 • KX-T-373 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 357 '20 • KX-T-373 12.3 Simple wired remote control (RCH-E3) 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 358 '20 • KX-T-373 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 359 '20 • KX-T-373 3. Master/ s In case of exposing cord △ Simple Remote Control Installation Manual PJZ012D069 ⑴ M ake certain to remove a screw on the bottom surface of the ⑴ U p to two r remote control. Read together with indoor unit's installation manual. WARNING ⑴...
Page 360 '20 • KX-T-373 3. Master/ slave setting when more than one remote control are used ⑴ U p 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 361 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 362 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 363 '20 • KX-T-373 12.4 OA spacer (FDTC series) PJZ012D125 PJZ012D125 This manual describes the installation methods for OA spacer (TC-OAS-E2) and the duct joint (TC-OAD-E). ◎This OA spacer is designed for assembling on the indoor unit (FDTC Series), not for be using independently. Application model FDTC15-56KXZE1 FDTC25-60VG...
Page 364 '20 • KX-T-373 2 Prior study before installation (Usage limitation) (1) Temperature conditions for OA spacer Adjust the temperature conditions of mixed air with outdoor air and indoor air within the • (Suspension bolts pitch) usage range of suction air temperature for the air-conditioner. Control box The usage temperature conditions of intake outdoor air and indoor air around the ducts are •...
Page 365 '20 • KX-T-373 4 Installation of OA spacer on the indoor unit OA spacer can be installed regardless whether the indoor unit has already been hanged or not. (It is recommended to install before hanging the unit for convenience of installation.) 1-1.
Page 366 '20 • KX-T-373 5 Installation of indoor unit Work procedure 1. This units is designed for 2 × 2 grid ceiling. If necessary, please detach the T bar temporarily before you install it. If it is installed on a ceiling other than 2 × 2 grid ceiling, provide an inspection port on the control box side. 2.
Page 367 '20 • KX-T-373 DUCT JOINT FOR FDTC 12.5 Duct joint (FDTC series) PJZ012D073 PJZ012D073 This product is used by assembling on the spacer (TC-OAS-E2) ● 1.Before installation Conﬁrm the following parts are included: ● Insulation 1 Insulation 2 Duct joint Screw (120 ×...
Page 368 '20 • KX-T-373 12.6 EEV-SET (FDK series) 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 ﬂ ow to decrease refrigerant ﬂ ow noise from the indoor unit. This manual is for the installation of EEV-SET to install indoor - outdoor unit piping.
Page 369 '20 • KX-T-373 Liquid pipinｇ（Branch piping side） MAX ： 2.5m EEV-SET Ceiling Gas piping Service hole Indoor unit (FDK) MAX ： 5m ② Refrigerant pipe work Install EEV-SET between indoor unit and branch pipe of liquid line. In case of Indoor unit type 15 - 56, joint to connect to φ 6.35 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.
Page 370 φ9.52 φ9.52 Branching pipe from '20 • KX-T-373 Indoor unit (Liquid) outdoor unit (Liquid) EEV-SET Indoor unit Outdoor unit Indoor unit Liquid piping size (Type15-56) φ6.35 ※Prepare different diameter pipe joint for Type15-56 (Type71, 90) φ9.52 ◦ U se phosphorus deoxidized copper alloy seamless pipe (C1220T specified in JIS H 3300) for refrigeration pipe installation.
Page 371 '20 • KX-T-373 ③ Electrical wiring 1. The original expansion valve inside the indoor unit should be fully opened. A) In case power source is turned off. Turn ON the power source in indoor unit. The expansion valve of indoor unit is fully opened automatically with original control of indoor unit. Please go the step 2.
Page 373 MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD. 2-3, Marunouchi 3-chome, Chiyoda-ku, Tokyo, 100-8332, Japan http://www.mhi-mth.co.jp/en/ 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.

Mitsubishi KXZ Series Technical Manual

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