Mitsubishi Electric TRANE SLZ Series Technical & Service Manual
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Mitsubishi Electric TRANE SLZ Series Technical & Service Manual

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TECHNICAL & SERVICE MANUAL
Indoor unit
[Model Name]
NTXCKS09A112AA
NTXCKS12A112AA
NTXCKS15A112AA
NTXCKS18A112AA
Model name
indication
INDOOR UNIT
WIRELESS REMOTE
CONTROLLER
WIRED REMOTE CONTROLLER
(Option)
CONTENTS
(Option)
1. REFERENCE MANUAL ...................... 2
2. SAFETY PRECAUTION ...................... 2
4. SPECIFICATIONS ............................... 9
6. WIRING DIAGRAM ............................ 13
8. TROUBLESHOOTING ....................... 15
9. SPECIAL FUNCTION ........................ 28
10. 4-WAY AIRFLOW SYSTEM ............... 30
PARTS CATALOG (OCBT669)
November 2018
No. OCHT669

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Summary of Contents for Mitsubishi Electric TRANE SLZ Series

  • Page 1: Table Of Contents

    November 2018 No. OCHT669 TECHNICAL & SERVICE MANUAL Indoor unit [Model Name] NTXCKS09A112AA NTXCKS12A112AA NTXCKS15A112AA NTXCKS18A112AA CONTENTS 1. REFERENCE MANUAL ...... 2 2. SAFETY PRECAUTION ...... 2 3. PARTS NAMES AND FUNCTIONS ..4 4. SPECIFICATIONS ....... 9 5. OUTLINES AND DIMENSIONS ..11 6.

  • Page 2: Reference Manual

    REFERENCE MANUAL OUTDOOR UNIT’S SERVICE MANUAL Model name Service Manual No. NTXMMX20A122AA OBHT702/OBBT702 SAFETY PRECAUTION 2-1. ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal, all supply circuits must be disconnected. 2-2. CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use a vacuum pump with a reverse flow check Use new refrigerant pipes.
  • Page 3 [1] Cautions for service (1) Perform service after recovering the refrigerant left in unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the system with specified amount of refrigerant. [2] Additional refrigerant charge When charging directly from cylinder ·...

  • Page 4: Parts Names And Functions

    PARTS NAMES AND FUNCTIONS 3-1. INDOOR UNIT Filter Removes dust and pollutants Horizontal Air Outlet from drawn in air. Sets horizontal airflow automatically during cooling or dehumidifying. Grille Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction.
  • Page 5 3-2. WIRELESS REMOTE CONTROLLER (Option) Transmission area Not available Remote controller display Battery replacement indicator Set Temperature buttons OFF/ON button Mode button (Changes operation mode) Fan Speed button (Changes fan speed) Airflow button (Changes up/down airflow direction) i-see button Timer ON button Menu button Timer OFF button SET/SEND button...
  • Page 6 3-3. Wired remote controller (Option) PAR-33MAA The functions which can be used are restricted according to each model. The main display can be displayed in 2 different modes: "Full" and "Basic." Display The initial setting is "Full." 1 Operation mode Indoor unit operation mode appears here.
  • Page 7 Menu structure Press the button. MENU Main menu Move the cursor to the desired item with the buttons, and press the button. SELECT Vane · Louver · Vent. (Lossnay) High power Timer ON/OFF timer Auto-OFF timer Weekly timer OU silent mode Restriction Temp.
  • Page 8 Main menu list Setting and display items Setting details Vane · Louver · Vent. Use to set the vane angle. • Select a desired vane setting from 5 different settings. (Lossnay) Use to turn ON/OFF the louver. • Select a desired setting from "ON" and "OFF." Use to set the amount of ventilation.

  • Page 9: Specifications

    Setting and display items Setting details Service Test run Select "Test run" from the Service menu to bring up the Test run menu. • Test run • Drain pump test run Input 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.
  • Page 10 NOISE CRITERION CURVES <60Hz> <60Hz> NTXCKS09A112AA NTXCKS12A112AA NOTCH SPL(dB) LINE NOTCH SPL(dB) LINE High High Medium Medium NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE THRESHOLD OF THRESHOLD OF HEARING FOR HEARING FOR NC-20 NC-20 CONTINUOUS CONTINUOUS NOISE NOISE...

  • Page 11: Outlines And Dimensions

    OUTLINES AND DIMENSIONS NTXCKS09A112AA　　　NTXCKS12A112AA　　　NTXCKS15A112AA　 　NTXCKS18A112AA Unit: inch (mm) OCHT669...
  • Page 12 WIRED REMOTE CONTROLLER WIRELESS REMOTE CONTROLLER Unit: inch (mm) PAR-SL100A-E PAR-33MAA 3/4 (19) 2-5/8 (66) 4-3/4 (120) 1-13/16 (46) 2-9/16 (64.7) OCHT669...

  • Page 13: Wiring Diagram

    WIRING DIAGRAM NTXCKS09A112AA　　　NTXCKS12A112AA　　　NTXCKS15A112AA　 　NTXCKS18A112AA OCHT669...

  • Page 14: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM NTXCKS09A112AA　　　NTXCKS12A112AA　　　NTXCKS15A112AA　 　NTXCKS18A112AA Strainer Heat exchanger Refrigerant GAS pipe connection (Flare) Condenser/evaporator temperature thermistor (TH5) Refrigerant flow in cooling Refrigerant flow in heating Refrigerant LIQUID pipe connection (Flare) Pipe temperature thermistor/liquid Room temperature (TH2) thermistor (TH1) Strainer Distributor with strainer Unit: inch(mm) NTXCKS09/12A112AA NTXCKS15/18A112AA...

  • Page 15: Troubleshooting

    TROUBLESHOOTING 8-1. TROUBLESHOOTING <Check code displayed by self-diagnosis and actions to be taken for service (summary)> Present and past check codes are logged, and they can be displayed on the wired remote controller or controller board of out- door unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring in the field, are summa- rized in the table below.
  • Page 16 Refer to the following tables for details on the check codes. [Output pattern A] Beeper sounds Beep Beep Beep Beep Beep Beep Beep 1 st 2 nd 3 rd n th 1 st 2 nd OPERATION · · · Repeated INDICATOR lamp blinking pattern...
  • Page 17 • If the unit cannot be operated properly after the test run, refer to the following table to find out the cause. Symptom Cause Wired remote controller •For about 3 minutes after power-on, operation of the PLEASE WAIT For about 3 minutes after power-on remote controller is not possible due to system startup.
  • Page 18 Note: Errors to be detected in outdoor unit, such as codes starting with F, U or E (excluding E0 to E7), are not covered in this document. Please refer to the outdoor unit's service manual 8-3. SELF-DIAGNOSIS ACTION TABLE for the details. Check code Abnormal point and detection method Countermeasure...
  • Page 19 *1: only P-series outdoor unit Check code Abnormal point and detection method Countermeasure Cause Drain pump lock protection operation 12 Check if drain pump works. 1 Malfunction of drain pump 1 Suspected abnormality, if drain pump 2 Clogged drain pump stops for 5 seconds continuously with Check if connector (CNP) is connected.
  • Page 20 *1: only P-series outdoor unit Check code Abnormal point and detection method Countermeasure Cause Pipe temperature thermistor/Condenser / Evaporator (TH5) 1 The unit is in 3-minute resume protec- 1 Defective thermistor 1– Check resistance value of thermistor. characteristics For characteristics, refer to (P1) above. tion mode if short/open of thermistor is detected.
  • Page 21 Abnormal point and detection method Countermeasure Check code Cause Remote controller transmission error(E3)/ signal receiving error(E5) 1 2 remote controllers are set as 1 Set a remote controller to main, and the other 1 Abnormal if remote controller could not “main.”...
  • Page 22 Check code Abnormal point and detection method Countermeasure Cause Forced compressor stop (due to water leakage abnormality) 1 The unit has a water leakage abnormality 1 Drain pump trouble 1 Check the drain pump. when the following conditions, a) and b), 2 Drain defective 2 Check whether water can be drained.
  • Page 23 8-4. TROUBLESHOOTING OF PROBLEMS Note: Refer to the manual of outdoor unit for the detail of remote controller. *1: only P-series outdoor unit Phenomena Cause Countermeasure (1) LED2 on indoor controller board • When LED1 on indoor controller board is also off. is off.
  • Page 24 8-5. TEST POINT DIAGRAM 8-5-1. Indoor controller board NTXCKS09A112AA　　　NTXCKS12A112AA　　　NTXCKS15A112AA　 　NTXCKS18A112AA CN22 CN5Y Connect to the terminal block (TB5) i-see Sensor motor (MT) Vane motor (MV) (Remote controller transmission line) 12 V pulse output 12 V pulse output 10.4–14.6 V DC CN90 Model selection Connect to the wireless...
  • Page 25 8-6. FUNCTION OF DIP SWITCH Each function is controlled by the DIP switch on the indoor controller board. Model setting and capacity setting are preset in the nonvolatile memory of the indoor controller board. ■ The black square ( ) indicates a switch position. Setting by the DIP switch and jumper wire Switch Functions...
  • Page 26 8-7. TROUBLESHOOTING OF MAIN PARTS NTXCKS09A112AA　　　NTXCKS12A112AA　　　NTXCKS15A112AA　 　NTXCKS18A112AA Parts name Check method and criterion Room temperature Measure the resistance with a tester. thermistor (TH1) (Parts temperature 50 to 86°F) Pipe temperature Normal thermistor/liquid (TH2) 4.3 to 9.6 k" Condenser/evaporator temperature thermistor (TH5) (Refer to "8-7-1.
  • Page 27 8-7-1. Thermistor Characteristic Graph <Thermistor characteristic graph> < Thermistor for lower temperature > Room temperature thermistor(TH1) Thermistor for Pipe temperature thermistor/liquid(TH2) lower temperature Condenser/evaporator temperature thermistor(TH5) Thermistor R =15 k" ± 3% Fixed number of B=3480 ± 2% T(˚F)Rt=15exp { 3480( T-32 273+ 30˚F 15.8 k"...

  • Page 28: Special Function

    SPECIAL FUNCTION BACK-UP HEATING FUNCTION 9-1. Operation The back-up heater turns ON when both of the following conditions have been satisfied: A) When the room temperature has not risen after the heater ON delay time has passed. Note: The heater ON delay time starts when the condition of “set temperature − room temperature > 1°F [0.5:]” has been satisfied. B) Set temperature −...
  • Page 29 9-4. How to send the Request code PAR-3xMAA ("x" represents 0 or later) Press the button. Main Main menu Maintenance Initial setting Select "Service" with the [Cursor] buttons ( ) or the [Page] buttons ( Service ), and press the button.

  • Page 30: Way Airflow System

    4-WAY AIRFLOW SYSTEM 10-1. FRESH AIR INTAKE (LOCATION FOR INSTALLATION) At the time of installation, use the duct holes (cut out) located at the positions shown in following diagram, as and when required. Fresh air intake Detail drawing of fresh air intake (Unit: inch) 5-17/32 Burring hole...
  • Page 31 10-4. FIXING HORIZONTAL VANE Horizontal vane of each air outlet can be fixed according to the environment where it is installed. Setting procedure 1) Turn off the main power supply (Turn off the breaker). 2) Remove the vane motor connector in the direction of the arrow shown below with pressing the unlocking button as in the figure below.

  • Page 32: Disassembly Procedure

    DISASSEMBLY PROCEDURE NTXCKS09A112AA　　　NTXCKS12A112AA　　　NTXCKS15A112AA　 　NTXCKS18A112AA Be careful when removing heavy parts. OPERATING PROCEDURE PHOTOS/FIGURES Figure 1 1. Removing the air intake grille and air filter Grille hook (1) Slide the knob of air intake grille to the direction of the arrow 1 to open the air intake grille. Air intake grille Air filter (2) Remove the grille hook from the panel to prevent the...
  • Page 33 OPERATING PROCEDURE PHOTOS/FIGURES 3. Removing the electrical parts Photo 4 (1) Loosen the 2 screws on the control box cover. Control box cover (2) Slide the control box cover as indicated by the arrow to remove. <Electrical parts in the control box> •...
  • Page 34 OPERATING PROCEDURE PHOTOS/FIGURES 6. Removing the pipe temperature thermistor/liquid (TH2) Photo 8 Fan motor Pipe temperature and pipe temperature thermistor/gas (TH5) Band cable thermistor/gas (TH5) (1) Remove the panel. (Refer to procedure 2) (2) Remove the room temperature thermistor (TH1). (Refer to procedure 4) (3) Remove the drain pan.
  • Page 35 OPERATING PROCEDURE PHOTOS/FIGURES 8. Removing the drain pump (DP) and float switch (FS) Photo 11 (1) Remove the panel. (Refer to procedure 2) Clamp (2) Remove the room temperature thermistor (TH1). (Refer Screw to procedure 4) Inner cover (3) Remove the control box cover. (Refer to procedure 3) (4) Remove the drain pan.
  • Page 36 MITSUBISHI ELECTRIC TRANE HVAC US LLC HEAD OFFICE: 1340 SATELLITE BOULEVARD, SUWANEE, GA 30024 USA © Copyright 2018 MITSUBISHI ELECTRIC CORPORATION Published in Nov. 2018. No. OCHT669 Specifications are subject to change without notice. Made in Japan Publication No. DL-SVG039A-EN...

This manual is also suitable for:

Trane ntxcks09a112aaTrane ntxcks12a112aaTrane ntxcks15a112aaTrane ntxcks18a112aa

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