Mitsubishi Electric TRANE NTXCKS09A112AA Page 35 Technical & Service Manual Download

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OPERATING PROCEDURE

PHOTOS/FIGURES

8. Removing the drain pump (DP) and float switch (FS)

(1) Remove the panel. (Refer to procedure 2)

(2) Remove the room temperature thermistor (TH1). (Refer

procedure 4)

(3) Remove the control box cover. (Refer to procedure 3)

(4) Remove the drain pan. (Refer to procedure 5)

Drain pump (See Photo 11 and 12)

(5) Disconnect the drain pump connector from the CNP and

float switch connector from CN4F on the indoor controller

board.

(6) Loosen the clamp fixing the connectors on the side of the

control box.

(7) Cut the hose band and release the hose.

(8) Remove the 2 screws fixing the drain pump and float

switch to the inner cover.

(9) Slide the base plate of the drain pump and float switch

as indicated by the arrow

to remove.

(10) Cut the band. (See Photo 12)

(11) Remove the 3 drain pump fixing screws, then remove the

drain pump. (See Photo 12)

Notes:

1. When re-attaching the drain pump, make sure to use a

band to fix the connector to the base plate.

2. Do not give a shock to the float switch. Otherwise it

can cause damage or malfunction.

Photo 11

Photo 12

9. Removing the heat exchanger

(1) Remove the panel. (Refer to procedure 2)

(2) Remove the room temperature thermistor (TH1). (Refer

to procedure 4)

(3) Remove the drain pan. (Refer to procedure 5)

(4) Remove the turbo fan and fan motor. (Refer to procedure

Heat exchanger (See Photo 13 and 14)

(5) Remove the 3 pipe cover fixing screws to remove the

pipe cover.

(6) Remove the 2 coil plate fixing screws.

(7) Remove the coil support fixing screw, then remove the

coil support.

(8) Remove the heat exchanger.

Photo 13

Photo 14

OCHT669

Clamp

Hose band

Drain

pump (DP)

Float switch (FS)

Screw

Inner cover

Hose

Band

Float switch (FS)

Drain pump (DP)

Base plate

Drain pump

fixing screws

Drain pump

fixing screws

Pipe cover fixing screws

Pipe cover

Coil support

fixing screw

Coil plate

fixing

screws

Heat

exchanger

Summary of Contents for TRANE NTXCKS09A112AA

Page 1: ...ON 2 3 PARTS NAMES AND FUNCTIONS 4 4 SPECIFICATIONS 9 5 OUTLINES AND DIMENSIONS 11 6 WIRING DIAGRAM 13 7 REFRIGERANT SYSTEM DIAGRAM 14 8 TROUBLESHOOTING 15 9 SPECIAL FUNCTION 28 10 4 WAY AIRFLOW SYSTEM 30 11 DISASSEMBLY PROCEDURE 32 INDOOR UNIT Model name indication WIRED REMOTE CONTROLLER Option PARTS CATALOG OCBT669 WIRELESS REMOTE CONTROLLER Option November 2018 ...

Page 2: ...rigerant oil or malfunction of com pressor Do not use a charging cylinder If a charging cylinder is used the composition of refrigera nt will change and the efficiency will be lowered Flare tool Electronic refrigerant charging scale Vacuum pump adaptor Size adjustment gauge Gauge manifold Torque wrench Gas leak detector Charge hose Tools for R410A Contamination inside refrigerant piping can cause ...

Page 3: ...s charged in liquid phase Electronic weighing scale Unit 3 Service tools Use the below service tools as exclusive tools for R410A refrigerant No Tool name Specifications 1 Gauge manifold Only for R410A Use the existing fitting specifications UNF1 2 Use high tension side pressure of 5 3MPa G or over 2 Charge hose Only for R410A Use pressure performance of 5 09MPa G or over 3 Electronic weighing sca...

Page 4: ...ing Vane Disperses airflow up and down and adjusts the angle of airflow direction Grille Filter Removes dust and pollutants from drawn in air Horizontal Air Outlet Sets horizontal airflow automatically during cooling or dehumidifying Air Intake Draws in air from room ...

Page 5: ...tep 5 Swing Auto Fan speed setting Set Temperature buttons Set Time button Sets the time Airflow button Changes up down airflow direction Mode button Changes operation mode Timer ON button Timer OFF button OFF ON button Fan Speed button Changes fan speed SET SEND button CANCEL button Up Down buttons Menu button i see button Reset button Remote controller display Battery replacement indicator Trans...

Page 6: ...on It blinks while the remote controller is starting up or when there is an error Press to save the setting Main display Press to change the operation mode Main menu Press to move the cursor down Press to return to the previous screen Main display Press to decrease temperature Main menu Press to move the cursor up Press to bring up the Main menu Main display Press to increase temperature Main menu...

Page 7: ...r Restriction Maintenance Initial setting ON OFF timer Auto OFF timer Temp range Operation lock Manual vane angle Main Sub Timer Main display Contrast Display details Auto mode Administrator password Language selection Service Input maintenance info Function setting Check Self check Maintenance password Remote controller check Test run Clock Auto descending panel Menu structure Filter information ...

Page 8: ...ving rate Up to 4 energy saving operation patterns can be set for each day Time can be set in 5 minute increments Energy saving rate can be set to a value from 0 and 50 to 90 in 10 increments Night setback Use to make Night setback settings Select Yes to enable the setting and No to disable the setting The temperature range and the start stop times can be set Restriction Temp range Use to restrict...

Page 9: ...ut maintenance Select Input maintenance Info from the Service menu to bring up the Maintenance information screen The following settings can be made from the Maintenance Information screen Model name input Serial No input Dealer information input Function setting Make the settings for the indoor unit functions via the remote controller as necessary LOSSNAY setting CITY MULTI only This setting is r...

Page 10: ...0 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB 0 0002 µbar BAND CENTER FREQUENCIES Hz High Medium 34 SPL dB 30 LINE 60Hz NOTCH Low 25 NTXCKS12A112AA 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC...

Page 11: ...11 OCHT669 OUTLINES AND DIMENSIONS 5 Unit inch mm NTXCKS09A112AA NTXCKS12A112AA NTXCKS15A112AA NTXCKS18A112AA ...

Page 12: ...12 OCHT669 WIRED REMOTE CONTROLLER WIRELESS REMOTE CONTROLLER PAR SL100A E PAR 33MAA 7 7 16 188 2 9 16 64 7 2 5 8 66 7 8 22 3 4 19 4 3 4 120 4 3 4 120 3 5 16 83 5 1 13 16 46 Unit inch mm ...

Page 13: ...13 OCHT669 WIRING DIAGRAM 6 NTXCKS09A112AA NTXCKS12A112AA NTXCKS15A112AA NTXCKS18A112AA ...

Page 14: ...erature thermistor TH1 Refrigerant flow in cooling Refrigerant flow in heating Strainer 50 Strainer 50 Heat exchanger Refrigerant GAS pipe connection Flare Refrigerant LIQUID pipe connection Flare NTXCKS09A112AA NTXCKS12A112AA NTXCKS15A112AA NTXCKS18A112AA NTXCKS09 12A112AA NTXCKS15 18A112AA Gas pipe φ3 8 9 52 φ1 2 12 7 Liquid pipe φ1 4 6 35 φ1 4 6 35 Unit inch mm ...

Page 15: ...de logs and restart the unit after finishing service 3 There is no abnormality in electrical component controller board remote controller etc 1 Re check the abnormal symptom 2 Conduct troubleshooting and ascertain the cause of the trouble according to 8 4 TROUBLESHOOTING OF PROBLEMS 3 Continue to operate unit for the time being if the cause is not ascertained 4 There is no abnormality concerning o...

Page 16: ... 11 PB Pb Indoor unit fan motor error 12 FB Fb Indoor unit control system error memory error etc 14 PL Refrigerant circuit abnormal Output pattern B Errors detected by unit other than indoor unit outdoor unit etc Note The supported check codes may vary depending on the connected outdoor unit Wireless remote controller Wired remote controller Symptom Remark Beeper sounds OPERATION INDICATOR lamp bl...

Page 17: ...nit s protection device is not connected Reverse or open phase wiring for the outdoor unit s power terminal block Incorrect wiring between indoor and outdoor units incorrect polarity of S1 S2 S3 Remote controller wire short Note Operation is not possible for about 30 seconds after cancellation of function selection Correct operation For description of each LED LED1 2 3 provided on the indoor contr...

Page 18: ...ller board Check resistance value of thermistor For characteristics refer to P1 above 2 Check contact failure of connector CN44 on the indoor controller board Refer to 8 5 TEST POINT DIAGRAM Turn the power on and check restart after inserting connector again Check pipe liquid temperature with remote controller in test run mode If pipe liquid temperature is extremely low in cooling mode or high in ...

Page 19: ...tor Check operating condition of refrigerant circuit Heating mode 1 Check cleanliness of the filter Remove blockage 4 Refer to 8 7 2 DC Fan Motor Fan Motor Indoor Controller Board Check outdoor fan motor Check operating condition of refrigerant circuit Pipe temperature Cooling mode Detected as abnormal when the pipe tem perature is not in the cooling range 3 min utes after compressor start and 6 m...

Page 20: ...ooseness of indoor unit or transmission wire of remote controller 2 Set one of the remote controllers main if there is no problem with the action above 3 Check wiring of remote controller Total wiring length max 500 m Do not use cable of 3 wire or more The number of connecting indoor units max 16 units The number of connecting remote controller max 2 units If the cause of trouble is not in above 1...

Page 21: ...ormal if data cannot be normally read from the nonvolatile memory of the indoor controller board 1 Defective indoor controller board 1 Replace indoor controller board E1 or E2 6201 or 6202 Remote controller control board 1 Abnormal if data cannot be normally read from the nonvolatile memory of the remote controller control board Check code E1 2 Abnormal if the clock function of remote controller c...

Page 22: ...ondensation on float switch Drain water trickles down lead wire Drain water ripples due to filter being clogged Extension piping connection difference at twin triple or quadruple system Miswiring of indoor outdoor connecting at twin triple quadruple system Room temperature thermistor liquid pipe temperature thermistor detection is defective 1 Check the drain pump 2 Check whether water can be drain...

Page 23: ...ting of refrigerant address for outdoor unit Set the refrigerant address to 0 For grouping control system under which 2 or more outdoor units are connected set one of the units to 0 Set refrigerant address using SW1 3 6 on outdoor controller circuit board 1 2 LED2 on indoor controller board is blinking When LED1 on indoor controller board is also blinking Connection failure of indoor outdoor unit ...

Page 24: ... CN5Y i see Sensor motor MT 12 V pulse output CNV Vane motor MV 12 V pulse output J41 J42 Jumper wire Pair No setting with wireless remote controller SW2 Capacity setting LED3 Communication Indoor outdoor SWE Jumper switch Emergency operation CN32 Remote switch CN41 HA terminal A CN2L Lossnay CN01 Connect to the terminal block TB4 Indoor outdoor connecting line 220 240 V AC F1 FUSE 6 3A 250V LED1 ...

Page 25: ...F ON MODELS SW2 1 2 3 4 5 OFF ON 1 2 3 4 5 OFF ON 09 12 15 1 2 3 4 5 OFF ON 18 MODELS SW2 Pair number setting with IR wireless remote controller J41 J42 0 1 2 3 to 9 Wireless remote controller setting Control PCB setting J41 J42 Initial setting IR wireless remote controller 0 Control PCB for both J41 and J42 4 pair number settings are supported The pair number settings of the wireless remote contr...

Page 26: ...s properly 2 Check if the drain pump works and drains water properly in dry mode 3 If no water drains confirm that the check code P5 will be displayed 10 minutes after the operation starts Note The DC volt drain pump motor for this model is driven by the control board so it is not possible to measure resistance between the wires leading to the pump motor Normal Red Black Input 13 V DC The pump sta...

Page 27: ...oor controller board Replace the defective fan motor Is the voltage normal Is there contact failure No Yes Yes No Check the operation of fan Complete Complete Fail OK OK Check the operation Check method of DC fan motor fan motor indoor controller circuit board 8 7 1 Thermistor Characteristic Graph Symptom The fan motor does not stop when controlled to stop by the remote controller The fan motor ru...

Page 28: ... You can set these functions by wired remote controller Request code Note that the change can be made only by the wired remote controller PAR 33MAA Notes 1 If using a twin indoor unit system both main and sub unit should be set in the same setting 2 Every time replacing indoor controller board for serving the function should be set again 3 Stop the air conditioner operation before changing the hea...

Page 29: ...e 004 3 Enter the current maintenance password 4 numerical digits Move cursor to the digit you want to change with the F1 or F2 button Set each number 0 through 9 with the F3 or F4 button Note The initial maintenance password is 9999 4 Then press the button 5 Select Check with the F1 or F2 button and press the button 6 Select Request code with the F1 or F2 button and press the button 7 Set the Ref...

Page 30: ...se a relay of 1W or smaller MB Electromagnetic switch power relay for duct fan X Auxiliary relay 12 V DC LY 1F Be sure to secure insulation material by tape etc 5 Green Yellow Orange Connector 5P Indoor unit side Multiple remote controller adapter PAC SA88HA E Be sure to secure insulation material by tape etc Installation at site CN51 on indoor unit board Red Brown 1 MB Multiple remote controller ...

Page 31: ...ntal vane Connector Unlocking button Vane motor 3 Set the vertical vane of the air outlet by hand slowly within the range in the table below A Measured standard position of the grille Horizontal vane Caution Do not set the dimension out of the range Erroneous setting could cause dew drips or malfunction of unit θ Set range Standard of horizontal position Angle θ 21 Horizontal Angle θ 24 Angle θ 39...

Page 32: ...tor box Corner panel See Figure 2 and Photo 2 5 Loosen the screw from the corner of the corner panel 6 Slide the corner panel as indicated by the arrow 7 Remove the safety strap from the hook then remove the corner panel from the panel The safety strap is not equipped for the signal receiver panel and i see Sensor corner panel 8 Remove the fastener then remove the corner panel Panel See Photo 3 9 ...

Page 33: ...r CN20 from the indoor controller board and disconnect the room temperature thermistor TH1 Note When fixing the thermistor make sure to fix it to the connector box using a band Photo 6 5 Removing the drain pan 1 Remove the panel Refer to procedure 2 2 Remove the room temperature thermistor TH1 Refer to procedure 4 Connector box See Photo 7 3 Remove the connector box fixing screw 4 Slide the connec...

Page 34: ...e the nut and washer from the turbo fan 5 Remove the turbo fan from the motor shaft Nut and washer Note 1 When assembling the turbo fan attach it so that it s tabs fit the holes of washer Note 2 Nut tightening torque 4 5 0 5 Nm Fan motor See Photo 9 6 Remove the control box cover Refer to procedure 3 7 Disconnect the fan motor cable from the CNMF on the indoor controller board 8 Remove the 2 motor...

Page 35: ... Notes 1 When re attaching the drain pump make sure to use a band to fix the connector to the base plate 2 Do not give a shock to the float switch Otherwise it can cause damage or malfunction Photo 11 Photo 12 9 Removing the heat exchanger 1 Remove the panel Refer to procedure 2 2 Remove the room temperature thermistor TH1 Refer to procedure 4 3 Remove the drain pan Refer to procedure 5 4 Remove t...

Page 36: ... CORPORATION Published in Nov 2018 No OCHT669 Made in Japan Specifications are subject to change without notice MITSUBISHI ELECTRIC TRANE HVAC US LLC HEAD OFFICE 1340 SATELLITE BOULEVARD SUWANEE GA 30024 USA Publication No DL SVG039A EN ...

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