Mitsubishi Electric PLA-AE12NL-U1 Technical & Service Manual
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Mitsubishi Electric PLA-AE12NL-U1 Technical & Service Manual

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SPLIT-SYSTEM HEAT PUMP
Technical & Service Manual
Indoor unit
[Model Name]
PLA-AE12NL
PLA-AE18NL
PLA-AE24NL
PLA-AE30NL
PLA-AE36NL
PLA-AE42NL
PLA-AE48NL
Grille model
[Model Name]
PLP-41EAEU
Contents
Service manual
1. REFERENCE MANUAL ................................. 2
2. SAFETY PRECAUTION ................................. 3
4. SPECIFICATIONS ........................................ 10
5. NOISE CRITERION CURVES ...................... 13
6. OUTLINES AND DIMENSIONS ....................... 15
7. WIRING DIAGRAM ...................................... 16
9. TROUBLESHOOTING ................................. 18
10. FUNCTION SETTING .................................. 36
11. SPECIAL FUNCTION ................................... 37
12. DISASSEMBLY PROCEDURE .................... 39
13. REMOTE CONTROLLER ............................ 46
OCH856
[Service Ref.]
PLA-AE12NL-U1
PLA-AE18NL-U1
PLA-AE24NL-U1
PLA-AE30NL-U1
PLA-AE36NL-U1
PLA-AE42NL-U1
PLA-AE48NL-U1
R454B
Model name
indication for
MAIN UNIT
WIRELESS REMOTE
CONTROLLER
(Option)
Technical data
T1. SPECIFICATIONS CONNECTED TO
OUTDOOR UNITS ···························· 66
T2. POSITION OF THE CENTER OF
GRAVITY ········································ 69
T3. PERFORMANCE CHART ·················· 70
T4. AIRFLOW DATA ······························ 76
1
September 2024
No. OCD856
Model name
indication for GRILLE
INDOOR UNIT
ON
RETURN SELECT
MENU
HOLD
OFF
WIRED REMOTE
CONTROLLER
(Option)

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Summary of Contents for Mitsubishi Electric PLA-AE12NL-U1

  • Page 1: Table Of Contents

    SPLIT-SYSTEM HEAT PUMP September 2024 No. OCD856 Technical & Service Manual R454B Indoor unit [Model Name] [Service Ref.] PLA-AE12NL-U1 PLA-AE12NL PLA-AE18NL-U1 PLA-AE18NL PLA-AE24NL-U1 PLA-AE24NL PLA-AE30NL-U1 PLA-AE30NL Model name Model name indication for PLA-AE36NL-U1 PLA-AE36NL indication for GRILLE MAIN UNIT INDOOR UNIT...

  • Page 2: Reference Manual

    REFERENCE MANUAL OUTDOOR UNIT SERVICE MANUAL Model Name Service Ref. Service Manual No. / Parts catalog No. PUZ-AK12/18NL PUZ-AK12/18NL-U1 PUY-AK12/18NL PUY-AK12/18NL-U1 OCH871/OCB871 PUZ-AH24/30NL PUZ-AH24/30NL-U1 PUY-AH24/30NL PUY-AH24/30NL-U1 PUZ-AK36/42/48NL PUZ-AK36/42/48NL-U1 OCH869/OCB869 PUY-AK36/42/48NL PUY-AK36/42/48NL-U1 PUZ-AK24/30/36/42/48NLHZ PUZ-AK24/30/36/42/48NLHZ-U1 OCH870/OCB870 MXZ-SM36/48/60NL MXZ-SM36/48/60NL-U1 OCH819/OCB819 MXZ-SM36/42/48NLHZ MXZ-SM36/42/48NLHZ-U1 PUMY-L36/48/60NKMU PUMY-L36/48/60NKMU OCH836/OCB836 PUMY-HL36/42/48NKMU...

  • Page 3: Safety Precaution

    SAFETY PRECAUTION MEANINGS OF SYMBOLS DISPLAYED ON THE UNIT WARNING This unit uses a flammable refrigerant. If the refrigerant leaks and comes in contact with fire or a heating part, it will create a harmful gas and there is a risk of fire. Read the OPERATION MANUAL carefully before operation.

  • Page 4: Cautions For Service

    [1] Warning for service (1) Do not alter the unit. (2) For installation and relocation work, follow the instructions in the Installation Manual and use tools and pipe components specifically made for use with refrigerant specified in the outdoor unit installation manual. (3) Ask a dealer or an authorized technician to install, relocate and repair the unit.
  • Page 5 [4] Cautions for unit using R454B refrigerant Basic work procedures are the same as those for conventional units using refrigerant R410A. However, pay careful attention to the following points. (1) Information on servicing (1-1) Checks to the area Prior to beginning work on systems containing FLAMMABLE REFRIGERANTS, safety checks are necessary to ensure that the risk of ignition is minimized.
  • Page 6 (3) Repair to intrinsically safe components Intrinsically safe components must be replaced. (4) Cabling Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects. The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.
  • Page 7 a) Become familiar with the equipment and its operation. b) Isolate system electrically. c) Before attempting the procedure, ensure that: • mechanical handling equipment is available, if required, for handling refrigerant cylinders. • all personal protective equipment is available and being used correctly. •...

  • Page 8: Service Tools

    Unit Electronic weighing scale [5] Service tools Use the below service tools as exclusive tools for R454B refrigerant. Tool name Specifications · Only for R454B · Use the existing fitting specifications . (UNF1/2) Gauge manifold · Use high-tension side pressure of 768.7 PSIG [5.3 MPa.G] or over. ·...

  • Page 9: Parts Names And Functions

    PARTS NAMES AND FUNCTIONS Drain pipe Air outlet Filter Liquid pipe Gas pipe Signal receiver i-see Sensor (Option) (Option) Model name Model name indication for Vane indication for GRILLE MAIN UNIT Air intake (Intake grille) OCH856...

  • Page 10: Specifications

    SPECIFICATIONS Service Ref. PLA-AE12NL-U1 Power supply (phase, cycle, voltage) 1-phase, 60 Hz, 208/230 V Max. Fuse Size Min Circuit Ampacity External finish (Panel) PLP-41EAEU: Munsell 1.0Y 9.2/0.2 Heat exchanger Plate fin coil Fan (drive) × No. Turbo fan (direct) × 1 Fan motor output 0.05...
  • Page 11 Service Ref. PLA-AE30NL-U1 Power supply (phase, cycle, voltage) 1-phase, 60 Hz, 208/230 V Max. Fuse Size Min Circuit Ampacity External finish (Panel) PLP-41EAEU: Munsell 1.0Y 9.2/0.2 Heat exchanger Plate fin coil Fan (drive) × No. Turbo fan (direct) × 1 Fan motor output 0.12 Fan motor...
  • Page 12 Service Ref. PLA-AE48NL-U1 Power supply (phase, cycle, voltage) 1-phase, 60 Hz, 208/230 V Max. Fuse Size Min Circuit Ampacity External finish (Panel) PLP-41EAEU: Munsell 1.0Y 9.2/0.2 Heat exchanger Plate fin coil Fan (drive) × No. Turbo fan (direct) × 1 Fan motor output 0.12 Fan motor...

  • Page 13: Noise Criterion Curves

    NOISE CRITERION CURVES PLA-AE12NL-U1 PLA-AE18NL-U1 NOTCH SPL(dB) LINE NOTCH SPL(dB) LINE High High Medium1 Medium1 Medium2 Medium2 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...
  • Page 14 PLA-AE36NL-U1 PLA-AE42NL-U1 NOTCH SPL(dB) LINE NOTCH SPL(dB) LINE High PLA-AE48NL-U1 High Medium1 Medium1 Medium2 Medium2 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 1000 2000...

  • Page 15: Outlines And Dimensions

    OUTLINES AND DIMENSIONS Unit: mm (in.) OCH856...

  • Page 16: Wiring Diagram

    WIRING DIAGRAM OCH856...

  • Page 17: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM Strainer (#50) 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 (TH2) Room temperature thermistor (TH1) Strainer (#50) Distributor with strainer (#50) OCH856...

  • Page 18: Troubleshooting

    TROUBLESHOOTING 9-1. 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 and control 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 19 [Output pattern A] Errors detected by indoor unit Wireless remote controller Wired remote controller Beeper sounds/OPERATION Symptom Remarks INDICATOR lamp blinks Check code (Number of times) Intake sensor error Pipe (TH2) sensor error Pipe (TH5) sensor error E6,E7 Indoor/outdoor unit communication error Drain sensor error/Float switch connector (CN4F) open Drain pump error Forced compressor stop(due to water leakage abnormality)
  • Page 20 • On wireless remote controller The continuous buzzer sounds from receiving section of indoor unit. Blink of operation lamp • On wired remote controller Check code displayed in the LCD. * The check code in the parenthesis indicates PAR-42MAAUB model. •...
  • Page 21 9-3. SELF-DIAGNOSIS ACTION TABLE 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 service manual for the details. Check code Abnormal point and detection method Cause...
  • Page 22 Check code Abnormal point and detection method Cause Countermeasure Drain overflow protection operation Malfunction of drain pump Check if drain-up machine works. Suspensive abnormality, if drain float Defective drain Check drain function. switch is detected to be underwater for 1 Clogged drain pump Remove drain float switch connector CN4F minute and 30 seconds continuously with...
  • Page 23 Check code Abnormal point and detection method Cause Countermeasure Pipe temperature Slight temperature difference – Check pipe <liquid or condenser/ <Cooling mode> between indoor room evaporator> temperature with room Detected as abnormal when the pipe temperature and pipe <liquid temperature display on remote temperature is not in the cooling range or condenser/evaporator>...
  • Page 24 Check code Abnormal point and detection method Cause Countermeasure Forced compressor stop Drain pump trouble Check the drain pump. Drain defective Check whether water can be drained. (due to water leakage abnormality) • Drain pump clogging The unit has a water leakage abnormality •...
  • Page 25 Check code Abnormal point and detection method Cause Countermeasure Indoor/outdoor unit communication Contact failure, short circuit or, Check LED display on the outdoor control error (Signal receiving error) circuit board. (Connect A-control service miswiring (converse wiring) of Abnormal if indoor controller board tool, PAC-SK52ST.) indoor/outdoor unit connecting cannot receive any signal normally for 6...
  • Page 26 Check code Abnormal point and detection method Cause Countermeasure Fan motor trouble Defective fan motor - Refer to "9-6-2. DC fan motor (fan motor/indoor controller circuit board". Defective indoor controller board PB (Pb) Contact failure of fan motor connector Abnormal refrigerant circuit Abnormal operation of 4-way When this error occurs, be sure to During Cooling, Drying, or Auto Cooling...
  • Page 27 Note: Refer to the manual of outdoor unit for the detail of remote controller. Phenomena Cause Countermeasure (2) LED2 on indoor controller board • When LED1 on indoor controller board is also blinking. is blinking. Connection failure of indoor/outdoor unit connecting Check indoor/outdoor unit connecting wire wire for connection failure.
  • Page 28 (FL): Refrigerant leakage Abnormal points and detection methods Causes and checkpoints Refrigerant is leaking from the air conditioner. • Refrigerant leak from air conditioner The refrigerant sensor has detected refrigerant leak. • Refrigerant leak from piping Refrigerant is leaking in the room where the alarm is beep- •...
  • Page 29 (FH): Refrigerant sensor error Abnormal points and detection methods Causes and checkpoints A refrigerant sensor has failed. • A refrigerant sensor connected to an M-IC has failed. • A Sensor and Alarm Kit connected to a branch box has failed. Diagnosis of failure Check the display of the remote controller or the 7-segment LED on the outdoor controller board...

  • Page 30: Emergency Operation

    9-5. EMERGENCY OPERATION 9-5-1. When wireless remote controller troubles or its battery is exhausted When the remote controller cannot be used When the batteries of the remote controller run out or the remote control- ler malfunctions, the emergency operation can be done using the emer- gency buttons on the grille.
  • Page 31 9-6. HOW TO CHECK THE PARTS Parts name Checkpoints Room temperature Disconnect the connector then measure the resistance with a multimeter. thermistor (TH1) (At the ambient temperature of 10 to 30˚C [50 to 86˚F]) Pipe temperature Normal Abnormal thermistor/liquid(TH2) Opened or short - circuited 4.3 to 9.6 kΩ...
  • Page 32 Parts name Checkpoints Refrigerant sensor Measure the resistance between the terminals with a multimeter. Normal Abnormal Below 10 Ω Open (10 Ω or more) After turning off the indoor unit breaker and leaving it for 5 minutes, measure the resistance value between the sensor terminals. <...
  • Page 33 Check method of DC fan motor (fan motor/indoor controller circuit board) Notes · High voltage is applied to the connecter (CNMF) for the fan motor. Pay attention to the service. · Do not pull out the connector (CNMF) for the motor with the power supply on. board and fan motor.) (It causes trouble of the indoor controller circuit Self check...

  • Page 34: Test Point Diagram

    9-7. TEST POINT DIAGRAM Indoor controller board LED2 CN90 CN4Z Power supply Connect to the wireless i-see Sensor (Sensor) (Wired remote controller) remote controller board (CNB) Vane motor (MV) 12 V pulse output CN5Y Model selection i-see Sensor motor (MT) 12 V pulse output J41, J42 Jumper wire...
  • Page 35 9-8. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE Each function is controlled by the DIP switch and the jumper wire on indoor controller board. ■ The black square ( ) indicates a switch position. Switch Functions Setting by the DIP switch and jumper wire Remarks Jumper wire Model...

  • Page 36: Function Setting

    FUNCTION SETTING 10-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER Each function can be set as necessary using the remote controller. The setting of function for each unit can only be done by the remote controller. (1) Functions available when setting the unit number to 00 Refer to the service manual that comes with each outdoor unit.

  • Page 37: Special Function

    SPECIAL FUNCTION 11-1. ROTATION FUNCTION (AND BACK-UP FUNCTION, 2ND STAGE CUT-IN FUNCTION) Note that this function is not available for SUZ, MXZ, and PUMY models. 11-1-1. Operation (1) Rotation function (and Back-up function) • Outline of functions · Main and sub units operate according to the interval of rotation setting. Main and sub units should be set by refrigerant address.
  • Page 38 • System constraint · This function is available only in cool mode. [2nd stage cut-in function] Ex.) Set temp. by R/C = 20°C [68°F] Set point = 26°C [79°F] Room temp. ≥ Set point Room temp. < Set point −4°C [-8°F] When request code number is “323”.

  • Page 39: Disassembly Procedure

    DISASSEMBLY PROCEDURE Be careful when removing heavy parts. OPERATING PROCEDURE PHOTOS/FIGURES Figure 1 1. Removing the filter Knob Air intake grille (1) Slide the knob of air intake grille toward the arrow to open the air intake grille. (See Figure 1.) Grille (2) Pull down the lever of the air intake grille to remove the filter.
  • Page 40 OPERATING PROCEDURE PHOTOS/FIGURES 4. Removing the room temperature thermistor (TH1) Photo 3 (1) Remove the electrical box cover. (See Photo 1 and 2.) Thermistor (TH1) (2) Disconnect the connector CN20 from the indoor controller Electrical box board. Indoor controller CN20 (3) Remove the room temperature thermistor with its holder.
  • Page 41 Be careful when removing heavy parts. OPERATING PROCEDURE PHOTOS/FIGURES Photo 6 Bell mouth fixing screws 6. Removing the electrical box (1) Remove the electrical box cover (See Photo 1 and 2.) and the connectors (Refer to procedure 5.). (2) Remove the electrical box fixing screws (M5 × 10: 2 Bell mouth screws).
  • Page 42 OPERATING PROCEDURE PHOTOS/FIGURES Nuts and washers 8. Removing the fan motor (MF) Photo 10 Rubber mounts (1) Remove the turbo fan. (See Photo 7 and refer to procedure 8.) (2) Remove the lead cover (tapping screw 4×10: 2 screws). (See Photo 10.) (3) Loosen the 2 clamps.
  • Page 43 OPERATING PROCEDURE PHOTOS/FIGURES 10. Removing the drain pan Photo 13 Drain pan (1) Remove the electrical box. (See photo 3 and refer to 7.) (2) Remove the bell mouth (tapping screw 4×10 : 2 screws). (See Photo 6.) (3) Remove the drain pan (screw M5×10: 4 screws). Drain pan Drain pan fixing screws...
  • Page 44 OPERATING PROCEDURE PHOTOS/FIGURES 13. Removing the drain pump (DP) Photo 16 (1) Remove the drain pan. (Refer to procedure 10) (2) Cut the hose band and remove the hose. Float switch (3) Loosen the clamp of the drain pump. Drain pump (4) Remove the drain pump (tapping screw 4×10: 2 screws/2 hooks).
  • Page 45 OPERATING PROCEDURE PHOTOS/FIGURES 15. Removing the heat exchanger Photo 18 (1) Remove the drain pan. (Refer to procedure 10.) Coil support fixing screw (2) Remove the piping cover (tapping screw 4×10: 3 Heat exchanger fixing screws screws). (3) Remove the coil plate (tapping screw 4×10: 2 screws). Coil support (4) Remove the heat exchanger fixing screws (tapping screw 4×10: 2 screws).

  • Page 46: Remote Controller

    REMOTE CONTROLLER 13-1. REMOTE CONTROLLER FUNCTIONS <PAR-42MAAUB> Controller interface The functions of the function buttons change depending on the screen. Refer to the button function guide that appears at the bottom of the LCD for the functions they serve on a given screen. When the system is centrally controlled, the button function guide that corresponds to the locked button will not appear.

  • Page 47: Room Temperature

    Display The main display can be displayed in two different modes: “Full” and “Basic”. The initial setting is “Full”. To switch to the “Basic” mode, change the setting on the Main display setting. (Refer to operation manual included with remote controller.) <Full mode>...

  • Page 48: Operation

    Menu structure Main menu Press the button. MENU Move the cursor to the desired item with the buttons, and press the button. SELECT/HOLD Operation Vane · 3D i-See · Vent. (Lossnay) High power Comfort Manual vane angle 3D i-see Sensor Timer menu Timer ON/OFF timer...
  • Page 49 Continue from the previous page. Maintenance menu Error information Filter information Cleaning Auto descending panel Descending operation Descending adjustment Refrigerant leak info Service menu Test run menu Test run Drain pump test run RC alarm test Maintenance information Collect model names and serial No. Model name input Serial No.
  • Page 50 Main menu list Main Setting and display items Setting details menu Operation Vane•3D i-See•Vent. Vane: Use to set the vertical air direction. (Lossnay) Louver: Use to set the horizontal air direction. Vane · Louver · Vent. 3D i-See sensor: This setting is available only for the air (Lossnay) conditioners that support easy setting function of motion sensing air direction.
  • Page 51 Setting and display Main menu Setting details items Initial Display Main display Use to switch between "Full" and "Basic" modes for the Main display, and use setting setting to change the background colors of the display to black. Display de- Make the settings for the remote controller related items as necessary.

  • Page 52: Controller Interface

    <PAR-SL101A-E> Controller interface Transmission area Remote controller display Set Temperature buttons OFF/ON button Mode button (Changes operation mode) Fan Speed button (Changes fan speed) Airflow button (Changes up/ i-see button* down airflow direction) Timer ON button Menu button Timer OFF button SET/SEND button Weekly timer ON/OFF button* CANCEL button...

  • Page 53: Error Information

    13-2. ERROR INFORMATION When an error occurs, the following screen will appear. Check the error status, stop the operation, and consult your dealer. 1. Check code, error unit, refrigerant address, model name, and se- Error information rial number will appear. Error code The model name and serial number will appear only if the informa- Error unit...
  • Page 54 • Checking the error information Maintenance menu While no errors are occurring, page 2/2 of the error information can be Error information viewed by selecting "Error information" from the Maintenance menu. Filter information Errors cannot be reset from this screen. Cleaning Refrigerant leak info Main menu: RETURN...

  • Page 55: Service Menu

    13-3. SERVICE MENU Maintenance password is required 1. Select "Service" from the Main menu, and press the [SELECT/HOLD] button. Main Main menu *At the main display, the menu button and select "Service" to make the maintenance setting. Service 2. When the Service menu is selected, a window will appear asking for the pass- Service menu word.

  • Page 56: Test Run Operation

    13-4. TEST RUN 13-4-1. PAR-42MAAUB 1. Select "Service" from the Main menu, and press the [SELECT/HOLD] button. Test run Input maintenance info. Settings Check Select "Test run" with the F1 or F2 button, and press the [SELECT/HOLD] button. Others : RETURN SELECT MENU RETURN...
  • Page 57 13-4-2. PAR-SL101A-E 1. Press the button to stop the air conditioner. • If the weekly timer is enabled ( is on), press the button to disable it ( is off). 2. Press the button for 5 seconds. • comes on and the unit enters the service mode. 3.
  • Page 58 4. Select the setting number with the F1 or F2 button. Function setting Setting range for modes 1 through 28: 1 through 3 Ref. address Grp. Mode 1 Setting range for modes 31 through 66: 1 through 15 Mode 2 1 Mode 3 1 Mode 4 1 Request: SELECT...
  • Page 59 13-5-2. PAR-SL101A-E 1. Going to the function select mode Press the button between of 5 seconds. (Start this operation from the status of remote controller display turned off.) [CHECK] is lit and "00" blinks. (Fig. 1) Press the button to set the "50". Direct the wireless remote controller toward the receiver of the indoor unit and press the button.

  • Page 60: Error History

    13-6. ERROR HISTORY 1. Select "Service" from the Main menu, and press the [SELECT/HOLD] button. Test run Input maintenance info. Settings Check Others : RETURN Select "Check" with the F1 or F2 button, and press the [SELECT/HOLD] button. SELECT MENU RETURN HOLD 2.

  • Page 61: Self-Diagnosis

    13-7. SELF-DIAGNOSIS 13-7-1. PAR-42MAAUB 1. Select "Service" from the Main menu, Diagnosis and press the [SELECT/HOLD] button. Self check Remote controller check Select "Check" from the Service menu, and press the [SELECT/HOLD] button. Service menu: MENU Cursor Select "Diagnosis" from the Check menu, and press the [SELECT/HOLD] button.
  • Page 62 4. Resetting the error history Self check Press the F4 button (Reset) on the screen that shows the error history. Ref. address Delete error history? A confirmation screen will appear asking if you want to delete the error history. Cancel Press the F4 button (OK) to delete the error history.

  • Page 63: Remote Controller Check

    13-8. REMOTE CONTROLLER CHECK If operations cannot be completed with the remote controller, diagnose the remote controller with this function. 1. Select "Service" from the Main menu, and Diagnosis press the [SELECT/HOLD] button. Self check Remote controller check Select "Check" from the Service menu, and press the [SELECT/HOLD] button.
  • Page 64 13-9. SMOOTH MAINTENANCE Check menu 1. Select "Service" from the Main menu, and press the [SELECT/HOLD] button. Error history Diagnosis Smooth maintenance Request code Select "Check" with the F1 or F2 button, and press the [SELECT/HOLD] button. Service menu: MENU Cursor Select "Smooth maintenance"...

  • Page 65: Request Code

    ■ Refrigerant address Single refrigerant system Multi refrigerant system (group control) In the case of single refrigerant system, the refrigerant address Up to 16 refrigerant systems (16 outdoor units) can be con- is "00" and no operation is required. nected as a group by 1 remote controller. To check or set the Simultaneous twin, triple units belong to this category refrigerant addresses.

  • Page 66: Outdoor Units

    SPECIFICATIONS CONNECTED TO OUTDOOR UNITS T1-1. INVERTER Model name Indoor unit PLA-AE12NL PLA-AE18NL PLA-AE24NL PLA-AE30NL PLA-AE12NL PLA-AE18NL PLA-AE24NL PLA-AE30NL Outdoor unit PUZ-AK12NL PUZ-AK18NL PUZ-AH24NL PUZ-AH30NL PUY-AK12NL PUY-AK18NL PUY-AH24NL PUY-AH30NL Cooling at 95°F Max. Capacity Btu/h 12,400 18,500 24,500 30,000 12,400 18,500 24,500 30,000...
  • Page 67 Model name Indoor unit PLA-AE36NL PLA-AE42NL PLA-AE48NL PLA-AE36NL PLA-AE42NL PLA-AE48NL Outdoor unit PUZ-AK36NL PUZ-AK42NL PUZ-AK48NL PUY-AK36NL PUY-AK42NL PUY-AK48NL Cooling at 95°F Max. Capacity Btu/h 36,600 42,500 49,000 36,600 42,500 49,000 Rated Capacity Btu/h 36,000 42,000 48,000 36,000 42,000 48,000 Min. Capacity Btu/h 14,300 15,400...
  • Page 68 Model name Indoor unit PLA-AE24NL PLA-AE30NL PLA-AE36NL PLA-AE42NL PLA-AE48NL Outdoor unit PUZ-AK24NLHZ PUZ-AK30NLHZ PUZ-AK36NLHZ PUZ-AK42NLHZ PUZ-AK48NLHZ Cooling at 95°F Max. Capacity Btu/h 24,400 31,000 36,600 43,000 49,000 Rated Capacity Btu/h 24,000 30,000 36,000 42,000 48,000 Min. Capacity Btu/h 13,600 12,600 14,300 16,800 16,800...

  • Page 69: Gravity

    T2 POSITION OF THE CENTER OF GRAVITY Unit: inch (mm) Model name PLA-AE12NL 12-13/16 15-3/8 4-9/16 Refrigerant pipe PLA-AE18NL (325) (390) (115) PLA-AE24NL Refrigerant pipe side PLA-AE30NL PLA-AE36NL 12-13/16 14-31/32 3-15/16 (325) (380) (100) PLA-AE42NL PLA-AE48NL PKA-A·HA7 PKA-A·KA7 Unit: inch (mm) Model name 35-3/8 9-13/16...

  • Page 70: T3 Performance Chart

    T3 PERFORMANCE CHART T3-1. INVERTER T3-1-1. COOLING CAPACITY PLA-AE12NL/PUY-AK12NL, PUZ-AK12NL CAPACITY (Btu/h): 12,000 INPUT (kW): 0.7 SHF: 0.9 Indoor Indoor Indoor Indoor Outdoor intake air °C/°F D.B. intake air intake air intake air intake air 20/68 25/77 30/86 35/95 40/104 46/115 D.B.(°C) D.B.(°F) W.B.(°C) W.B.(°F) SHC SHF...
  • Page 71 PLA-AE24NL/PUY-AH24NL, PUZ-AH24NL CAPACITY (Btu/h): 24,000 INPUT (kW): 1.81 SHF: 0.82 Indoor Indoor Indoor Indoor Outdoor intake air °C/°F D.B. intake air intake air intake air intake air 20/68 25/77 30/86 35/95 40/104 46/115 D.B.(°C) D.B.(°F) W.B.(°C) W.B.(°F) SHC SHF P.C. SHC SHF P.C.
  • Page 72 PLA-AE36NL/PUY-AK36NL, PUZ-AK36NL CAPACITY (Btu/h): 36,000 INPUT (kW): 2.62 SHF: 0.76 Indoor Indoor Indoor Indoor Outdoor intake air °C/°F D.B. intake air intake air intake air intake air 20/68 25/77 30/86 35/95 40/104 46/115 D.B.(°C) D.B.(°F) W.B.(°C) W.B.(°F) SHC SHF P.C. SHC SHF P.C.
  • Page 73 PLA-AE48NL/PUY-AK48NL, PUZ-AK48NL CAPACITY (Btu/h): 48,000 INPUT (kW): 4.573 SHF: 0.67 Indoor Indoor Indoor Indoor Outdoor intake air °C/°F D.B. intake air intake air intake air intake air 20/68 25/77 30/86 35/95 40/104 46/115 D.B.(°C) D.B.(°F) W.B.(°C) W.B.(°F) SHC SHF P.C. SHC SHF P.C.
  • Page 74 T3-2. HYPER HEATING INVERTER T3-2-1. COOLING CAPACITY PLA-AE24NL/PUZ-AK24NLHZ CAPACITY (Btu/h): 24,000 INPUT (kW): 1.49 SHF: 0.79 Indoor Indoor Indoor Indoor Outdoor intake air °C/°F D.B. intake air intake air intake air intake air 20/68 25/77 30/86 35/95 40/104 46/115 D.B.(°C) D.B.(°F) W.B.(°C) W.B.(°F) SHC SHF P.C.
  • Page 75 PLA-AE36NL/PUZ-AK36NLHZ CAPACITY (Btu/h): 36,000 INPUT (kW): 2.62 SHF: 0.76 Outdoor intake air °C/°F D.B. Indoor Indoor Indoor Indoor intake air intake air intake air intake air 20/68 25/77 30/86 35/95 40/104 46/115 D.B.(°C) D.B.(°F) W.B.(°C) W.B.(°F) SHC SHF P.C. SHC SHF P.C.

  • Page 76: T4. Airflow Data

    PLA-AE48NL/PUZ-AK48NLHZ CAPACITY (Btu/h): 48,000 INPUT (kW): 4.56 SHF: 0.67 Indoor Indoor Indoor Indoor Outdoor intake air °C/°F D.B. intake air intake air intake air intake air 20/68 25/77 30/86 35/95 40/104 46/115 D.B.(°C) D.B.(°F) W.B.(°C) W.B.(°F) SHC SHF P.C. SHC SHF P.C.
  • Page 77 T4-2. FRESH AIR INTAKE AND BRANCH DUCT 10-2. PLA-A·BA 1. Branch duct hole and fresh air intake hole (Fig. 1) 10-2-1 FRESH AIR INTAKE AND BRANCH DUCT At the time of installation, use the duct holes (cut out) located at the positions shown in Fig.1, as and when required. •...
  • Page 78 3. Fresh air intake amount & static pressure characteristics PLA-AE12/18NL Multifunction casement + Standard filter Multifunction casement + High efficiency filter 50(20) 50(20) 2 - inlet 2 - inlet -50(-20) -50(-20) -100(-40) -100(-40) 1 - inlet 1 - inlet -150(-60) -150(-60) -200(-80) -200(-80)
  • Page 79 4. Change of outlet numbers Indoor unit The optional air outlet is necessary. To change the air outlet number to 3-, or 2-way outlet, the outlet number should be closed with the operational air outlet shutter. When the air outlets are closed, close the vane by removing the vane connector.
  • Page 80 PLA-AE18NL 4-way airflow (horizontal vane) Round duct 4-way airflow (horizontal vane) Rectangular duct 30(12) 30(12) Duct Duct 20(8) 20(8) High High 10(4) 10(4) 8[CMM] 8[CMM] [CFM] [CFM] Airflow rate Airflow rate 3-way airflow (horizontal vane) Round duct 3-way airflow (horizontal vane) Rectangular duct 80(32) 80(32) 70(28)
  • Page 81 PLA-AE42NL 4-way airflow (horizontal vane) Round duct 4-way airflow (horizontal vane) Rectangular duct 60(24) 60(24) 50(20) 50(20) Duct High Duct 40(16) 40(16) High 30(12) 30(12) 20(8) 20(8) 10(4) 10(4) 8[CMM] 8[CMM] [CFM] [CFM] Airflow rate Airflow rate 3-way airflow (horizontal vane) Round duct 3-way airflow (horizontal vane) Rectangular duct 80(32) 80(32)

  • Page 82: Temperature Distribution

    T4-3. TEMPERATURE AND AIR FLOW DISTRIBUTIONS PLA-AE12NL Temperature distribution PLFY-(E)P08,12NEMU-E <Cooling mode>Standard <Heating mode>Standard Flow angle: 30° 4-way flow Flow angle: 60° 4-way flow ceiling height: 2.7m(8.9ft) ceiling height: 2.7m(8.9ft) <:(°F)> (8.9) (8.9) (75) (81) (73) (81) (73) (86) (86) (6.6) (6.6) (77)

  • Page 83: Airflow Distribution

    PLA-AE12NL Airflow distribution PLFY-(E)P08,12NEMU-E <Cooling mode> <Heating mode> Flow angle: 30° Flow angle: 60° <m/s(ft/s)> (8.9) (8.9) (6.6) (6.6) (6.6) (6.6) (4.9) (4.9) (4.9) (4.9) (1.6) (1.6) (6.6) (6.6) (3.3) (3.3) (3.3 (3.3) (3.3) (1.6) (1.6) (1.6) (8.2) (6.6) (3.3) (3.3) (6.6) (8.2)
  • Page 84 PLA-AE18NL Temperature distribution PLFY-(E)P18NEMU-E <Cooling mode>Standard <Heating mode>Standar Flow angle: 30° 4-way flow Flow angle: 60° 4-way flow ceiling height: 2.7m(8.9ft) ceiling height: 2.7m(8.9ft) <:(°F)> (8.9) (8.9) (73) (73) (73) (73) (6.6) (81) (81) (81) (81) (6.6) (77) (77) (75) (3.3) (3.3) (81)
  • Page 85 PLA-AE18NL PLFY-(E)P18NEMU-E Airflow distribution <Cooling mode> <Heating mode> Flow angle: 30° Flow angle: 60° <m/s(ft/s)> (8.9) (8.9) (6.6) (6.6) (6.6) (6.6) (6.6) (6.6) (4.9) (4.9) (3.3) (3.3) (3.3) (3.3) (3.3) (1.6) (1.6) (1.6) (11.5) (9.9) (6.6) (3.3) (3.3) (6.6) (9.9) (11.5) (11.5) (9.9)
  • Page 86 (81) (81) (75) (11.5) (9.9) (6.6) (3.3) (3.3) (6.6) (9.9) (11.5) (11.5) (9.9) (6.6) Floor distance<m(ft)> PLA-AE24/30NL Temperature distribution PLFY-(E)P24,30NEMU-E <Heating mode>Standard Flow angle: 60° 4-way flow <Cooling mode>Standard <Heating mode>Standa ceiling height: 2.7m(8.9ft) Flow angle: 30° 4-way flow Flow angle: 60° 4-way flo ceiling height: 2.7m(8.9ft) ceiling height: 2.7m(8.9ft) <:(°F)>...
  • Page 87 (1.6) (1.6) (1.6) (11.5) (9.9) (6.6) (3.3) (3.3) (6.6) (9.9) (11.5) (11.5) (9.9) (6.6) Floor distance<m(ft)> PLA-AE24/30NL Airflow distribution PLFY-(E)P24,30NEMU-E <Heating mode> Flow angle: 60° <Cooling mode> <Heating mode> Flow angle: 30° Flow angle: 60° <m/s(ft/s)> <m/s(ft/s)> (8.9) (8.2) (8.2) <m/s(ft/s)>...
  • Page 88 PLA-AE36NL Temperature distribution PLFY-(E)P36NEMU-E <Cooling mode>Standard <Heating mode>Standa Flow angle: 60° 4-way fl Flow angle: 30° 4-way flow ceiling height: 3.2m(10.5ft) ceiling height: 3.2m(10.5 <:(°F)> (10.5) (10.5) (9.9) (9.9) (73) (73) (81) (81) (6.6) (6.6) (77) (77) (3.3) (3.3) (75) (81) (81) (16.4)
  • Page 89 PLA-AE36NL Airflow distribution PLFY-(E)P36NEMU-E <Cooling mode> <Heating mode> Flow angle: 30° Flow angle: 60° <m/s(ft/s)> (10.5) (10.5) (9.9) (9.9) (9.9) (9.9) (9.9) (8.2) (8.2) (8.2) (8.2) (8.2) (8.2) (6.6) (6.6) (6.6) (6.6) (6.6) (4.9) (4.9) (4.9) (4.9) (3.3) (3.3) (3.3) (3.3) (1.6) (3.3)
  • Page 90 (3.3) (3.3) (75) (81) (81) (16.4) (9.9) (6.6) (3.3) (3.3) (6.6) (9.9) (13.1) (16.4) (16.4) (9.9) (13.1) (13.1) Floor distance<m(ft)> PLA-AE42/48NL Temperature distribution PLFY-(E)P48NEMU-E <Heating mode>Standard Flow angle: 60° 4-way flow <Cooling mode>Standard <Heating mode>Standard ceiling height: 3.2m(10.5ft) Flow angle: 30° 4-way flow Flow angle: 60°...
  • Page 91 (3.3) (3.3) (3.3) (3.3) (1.6) (3.3) (1.6) (1.6) (16.4) (9.9) (6.6) (3.3) (3.3) (6.6) (9.9) (13.1) (16.4) (16.4) (9.9) (13.1) (13.1) Floor distance<m(ft)> PLA-AE4248NL Airflow distribution PLFY-(E)P48NEMU-E <Heating mode> Flow angle: 60° <Cooling mode> <Heating mode> Flow angle: 30° Flow angle: 60° <m/s(ft/s)>...
  • Page 92 HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8,310, JAPAN Copyright 2024 MITSUBISHI ELECTRIC CORPORATION Published: Sep. 2024 No.OCD856 Made in Japan Specifications are subject to change without notice.

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