Mitsubishi Electric MSY-A17NA - Manual

6 4 OUTLINES AND DIMENSIONS Unit : inch 11-3/4 4 24-9/16 30-11/16 8-1/4 3/16 2-1/8 3/4 6-1/4 2-5/16 Air in Air out Installation plate Insulation [ 1-1/8 Drain hose [ 5/8 (Connected part O.D) Liquid line [ 1/4 19-11/16 Gas line [ 3/8 16-15/16 Insulation [ 1-3/8 O.D [ 3/4 I.D { 6-1/8 6-1/8 7/8 1-3/4 1...

8 5 WIRING DIAGRAM MSZ-A09NA MSY-A15NAMSZ-A12NA MSY-A17NAMSZ-A15NAMSZ-A17NA MSZ-A24NAMSY-A24NA OB450-1.qxp 06.11.29 1:37 PM Page 8

9 REFRIGERANT SYSTEM DIAGRAM 6 MSZ-A09NAMSZ-A12NA Indoor heat exchanger Flared connection Room temperaturethermistorRT11 Indoor coil thermistorRT13(sub) Flared connection Refrigerant pipe [ 3/8 (with heat insulator) Refrigerant pipe [ 1/4 (with heat insulator) Indoor coil thermistorRT12(main) Refrig...

10 7 SERVICE FUNCTIONS 7-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION A maximum of 4 indoor units with wireless remote controllers can be used in a room.In this case, to operate each indoor unit individually by each remote controller, P.C. boards of remote controller must bemodified according...

11 8-1. Cautions on troubleshooting 1. Before troubleshooting, check the following: 1) Check the power supply voltage. 2) Check the indoor/outdoor connecting wire for mis-wiring. 2. Take care of the following during servicing. 1) Before servicing the air conditioner, be sure to turn off the unit fir...

14 2. Indoor unit failure mode table NOTE : Blinking patterns of this mode differ from the ones of Troubleshooting check table (8-4.). 12-time flash2.5-second OFF Replace the indoor electronic controlP.C. board. Indoor control system It cannot properly read data in thenonvolatile memory of the indoo...

18 Check of indoor fan motor A When OPERATION INDICATOR lamp flashes 3-time.Indoor fan does not operate. w If more than 12 seconds or more passes after EMERGENCY OPERATION switch is pressed, the voltage mentioned above 2 goes 0V DC although the indoor electric control P.C. board is normal. Indoor el...

19 Check of remote controller and receiver P.C. board B Indoor unit operates by pressing EMERGENCY OPERATION switch, but does not operate with the remote controller. w Check if the remote controller is exclusive for this air conditioner. Yes Replace the batteries. (Refer to 8-1.4.) Turn ON a radio t...

20 The unit does not operate with the remote controller.Also, OPERATION INDICATOR lamp does not light up by pressing EMERGENCY OPERATION switch. Check of indoor electronic control P.C. board and indoor fan motor C Yes No w 1. The fan motor connector's 1 lead wire is red, whereas 3 is black. w 2. Con...

21 How to check mis-wiring and serial signal error D Is there rated voltage AC in the power supply? Is there any mis-wiring, poor contact, or wire disconnection of the indoor/outdoor connecting wire? W 1. Mis-wiring may damage indoor electronic control P.C. board during the operation. Be sure to con...

22 Electromagnetic noise enters into TV sets or radios E Replace or repair the antenna.Replace or repair the coaxial cable. No No No Yes Yes No No Yes Yes Yes Is the distance between theantennas and the indoorunit within 9.91ft., or is thedistance between theantennas and the outdoorunit within 9.91f...

25 DISASSEMBLY INSTRUCTIONS 9 (1) Slide the sleeve and check if there is a locking lever or not. (2) The terminal with this connector has the locking mechanism. 1 Slide the sleeve. 2 Pull the terminal while pushing the locking lever. 1 Hold the sleeve, and pull out the terminal slowly. The terminal ...

26 2. Removing the electronic control P.C. board, the power monitor receiver P.C. board, SW P.C. boardand the terminal block (1) Remove the horizontal vane, the panel (Refer to 1.) and the corner box. (2) Remove the screw of the conduit cover, and conduit cover. (See Photo 2.) (3) Remove the indoor/...

28 9-2.MSZ-A24NA MSY-A24NA OPERATING PROCEDURE PHOTOS 1. Removing the front panel (1) Remove the screw caps of the front panel. Remove the screws. (2) Pull the panel down to your side slightly and unhook the catches at the top. Photo 1 Photo 2 Front panel IndoorelectroniccontrolP.C. board T.B. SW co...

29 OPERATING PROCEDURE PHOTOS Photo 4 Photo 6 Vane motors 4. Removing the vane motor (1) Remove the front panel. (Refer to 1.)(2) Remove the electrical cover. (Refer to 2.)(3) Remove the lead wire of vane motor.(Refer to 3.)(4) Remove the R.L. holder.(5) Pull out the drain hose from the nozzle assem...

30 10 PARTS LIST 10-1. PARTS LIST (non-RoHS compliant)MSZ-A09NA MSY-A15NAMSZ-A12NA MSY-A17NAMSZ-A15NAMSZ-A17NA1. INDOOR UNIT STRUCTURAL PARTS No. Part No. Part name Remarks Symbol in Wiring Diagram Q'ty/unit 123456789 10 MSZ- MSY- 11 12 REMOTE CONTROLLERREMOTE CONTROLLERREMOTE CONTROLLER HOLDER KM06...

31 3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS MSZ-A09NA MSZ-A12NA MSZ-A15NA MSZ-A17NA MSY-A15NA MSY-A17NA 5 3 8 1 7 6 10 11 13 18 9 12 16 14 15 17 BEARING MOUNTSLEEVE BEARINGDRAIN HOSENOZZLE ASSEMBLYNOZZLE ASSEMBLYVANE MOTOR UNIT (HORIZONTAL)HORIZONTAL VANEPOWER MONITOR RECEIVER P.C. BOARD...

32 1 2 3 INDOOR HEAT EXCHANGERINDOOR HEAT EXCHANGERUNION (GAS)UNION (GAS)UNION (LIQUID) { 3/8 { 1/2 { 1/4 E02 A54 620E02 A56 620E02 815 666E02 155 666E02 151 667 1 1 1 1 11 1 11 1 1 1 1 11 1 11 MSZ- MSY- A09NA A12NA A15NA A17NA A15NA A17NA Q'ty/unit No. Part No. Part name Remarks Symbol in Wiring Di...

33 MSZ-A24NAMSY-A24NA6. INDOOR UNIT STRUCTURAL PARTS MSZ-A24NA MSY-A24NA E02 527 970E02 685 234E02 888 000E02 408 142E02 685 067E02 888 010E02 534 100E02 685 975 - E02 888 007 INSTALLATION PLATEBOX FRONT PANEL ASSEMBLYCATCHSCREW CAP GRILLECATECHIN AIR FILTERCORNER BOX (RIGHT) AIR CLEANING FILTERLAMP...

34 E02 527 302E02 408 509E02 001 504E02 408 702E02 A58 235E02 685 040E02 685 041E02 527 034E02 A58 300E02 448 303E02 408 303E02 918 333E02 918 329E02 918 468E02 A58 452E02 A53 452E02 527 308E02 A58 375 E02 918 307E02 528 034E02 529 034 123456789 10 11 121314 15 1617181920 LINE FLOW FANBEARING MOUNTS...

37 3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS MSZ-A09NA MSZ-A12NA MSZ-A15NA MSZ-A17NA MSY-A15NA MSY-A17NA 5 3 8 1 7 6 10 11 13 18 9 12 16 14 15 17 BEARING MOUNTSLEEVE BEARINGDRAIN HOSENOZZLE ASSEMBLYNOZZLE ASSEMBLYVANE MOTOR UNIT (HORIZONTAL)HORIZONTAL VANEPOWER MONITOR RECEIVER P.C. BOARD...

42 11 MICROPROCESSOR CONTROL Once the operation mode is set, the same operation mode can be repeated by simply turning OPERATE/STOP(ON/OFF) button ON.Indoor unit receives the signal with a beep tone.When the system turns off, 3-minute time delay will operate to protect system from overload and compr...

45 (3) Positioning The vane is once pressed to the vane stopper to confirm the standard position and then set to the desired angle.Confirming of standard position is performed in the following cases.(a) When the operation starts or finishes (including timer operation).(b) When the test run starts.(c...

46 The air conditioner starts heat-ing operation approx. 3 minutesafter the vane has moved to thehorizontal position. • S o m e t i m e s t h e a r e aaround your feet may notwar m. To war n the areaaround the feet, set theh o r i z o n t a l va n e t o(AUTO) or the downward-blowing position. • When...

47 11-8. TIMER OPERATION 1. How to set the time (1) Press OPERATE/STOP (ON/OFF) button to start the air conditioner.(2) Check that the current time is set correctly. NOTE : Timer operation will not work without setting the current time. Initially “AM0:00” blinks at the current time display of TIME M...

EMERGENCY OPERATION switch E.O. SW Operation mode COOL HEAT (MSZ) Set temperature 75 ° F 75 ° F Fan speed Medium Medium Horizontal vane Auto Auto The operation mode is indicated by the OperationIndicator lamp on the indoor unit as following Operation indicator lamp (MSZ type) Press again <Heat>...