Mitsubishi MSZ-SF50VE- User Manual

Page 2 - Use the speci; Never use any refrigerant other than that specified.

2 <Preparation before the repair service> Prepare the proper tools. Prepare the proper protectors. Provide adequate ventilation. After stopping the operation of the air conditioner, turn off the power-supply breaker and remove the power plug. Discharge the capacitor before the work involving t...

Page 3 - TECHNICAL CHANGES; and

3 TECHNICAL CHANGES 1 MSZ-SF25VE- E1 MSZ-SF25VE- EN1 MSZ-SF35VE- E1 MSZ-SF35VE- EN1 MSZ-SF42VE- E1 MSZ-SF42VE- EN1 MSZ-SF50VE- E1 MSZ-SF50VE- EN1 1. New model MSZ-SF25VE- E1 MSZ-SF25VE- E2 MSZ-SF25VE- EN1 MSZ-SF25VE- EN2 MSZ-SF35VE- E1 MSZ-SF35VE- E2 MSZ-SF35VE- EN1 MSZ-SF35VE- EN2 MSZ-SF42VE- E1 MS...

Page 4 - ACCESSORIES; PART NAMES AND FUNCTIONS; Model

4 ACCESSORIES MSZ-SF25VE MSZ-SF35VE MSZ-SF42VE MSZ-SF50VE PART NAMES AND FUNCTIONS 2 Model MSZ-SF25VE MSZ-SF35VE MSZ-SF42VE MSZ-SF50VE Installation plate 1 Installation plate fi xing screw 4 × 25 mm 5 Remote controller holder 1 Fixing screw for 3.5 × 16 mm (Black) 2 Battery (AAA) for remote controll...

Page 5 - NOTE; SPECIFICATION; Specifications and rated conditions of main electric parts

5 Indoor model MSZ-SF25VE MSZ-SF35VE MSZ-SF42VE MSZ-SF50VE Power supply Single phase 230 V, 50 Hz Electrical data Power input 1 Cooling W 18 22 Heating 24 27 35 Running current 1 Cooling A 0.16 0.18 Heating 0.20 0.22 0.27 Fan motor Model RC0J21-AA Current 1 Cooling A 0.16 0.18 Heating 0.20 0.22 0.27...

Page 6 - NOISE CRITERIA CURVES; Test conditions

6 MSZ-SF25VE 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 NC-60 NC-50 NC-40 NC-30 NC-20 NC-70 OCT A VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR BAND CENTER FREQUENCIES, Hz COOLING FUNCTION SPL(dB(A)) LINE Super High FAN SPEED HEATING 42 46 NC-10 MSZ-SF35VE 90 80 70 60 50 40...

Page 7 - OUTLINES AND DIMENSIONS

7 Unit: mm MSZ-SF25VE MSZ-SF35VE MSZ-SF42VE MSZ-SF50VE 225 225 162.5 162.5 3.5 42 41 87.5 87.5 331.5 309.5 215.5 257 258 22 235 236 67.5 89.5 58 92 47 108.5 100 7 ( ) 80 60 193 18 71 47 5 195 58 71 45 45 299 577 160 61 798 778 10 216.5 Piping Insulation Φ 37 O.D Liquid line Φ 6.35 - 0.39m (Flared co...

Page 8 - WIRING DIAGRAM

8 MSZ-SF25VE MSZ-SF42VE WIRING DIAGRAM 6 MSZ-SF35VE MSZ-SF50VE OBH600B

Page 9 - REFRIGERANT SYSTEM DIAGRAM

9 Indoor heat exchanger Flared connection Room temperaturethermistorRT11 Flared connection Refrigerant pipe ø9.52 ( MSZ-SF25/35/42VE ) ø12.7 ( MSZ-SF50VE ) (with heat insulator) Refrigerant pipe ø6.35(with heat insulator) Indoor coil thermistor RT12 (main) Indoor coil thermistor RT13 (sub) Refrigera...

Page 10 - How to modify the remote controller P.C. board; Table 1; SERVICE FUNCTIONS

10 8-1. TIMER SHORT MODE For service, the following set time can be shortened by short circuit of JPG and JPS on the electronic control P.C. board.(Refer to 10-7.)Set time: 3 minutes → 3 seconds (It takes 3 minutes for the compressor to start operation. However, the starting time is shortened by sho...

Page 11 - Operation; How to disable “AUTO RESTART FUNCTION”

11 8-3. AUTO RESTART FUNCTION When the indoor unit is controlled with the remote controller, the operation mode, the set temperature, and the fan speed are memorized by the indoor electronic control P.C. board. “AUTO RESTART FUNCTION” automatically starts operation in the same mode just before the s...

Page 12 - WIRELESS REMOTE CONTROLLER; MICROPROCESSOR CONTROL; INDOOR UNIT DISPLAY SECTION; Coil frost prevention

12 WIRELESS REMOTE CONTROLLER MSZ-SF25VE MSZ-SF35VE MSZ-SF42VE MSZ-SF50VE MICROPROCESSOR CONTROL 9 NOTE : Last setting will be stored after the unit is turned OFF with the remote controller. Indoor unit receives the signal of the remote controller with beeps. Signal transmitting section Operation di...

Page 13 - -5. AUTO CHANGE OVER ··· AUTO MODE OPERATION

13 9-2. DRY ( ) OPERATION (1) Press OPERATE/STOP (ON/OFF) button. OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone. (2) Select DRY mode with OPERATION SELECT button.(3) The set temperature is determined from the initial room temperature. 1. Coil frost prevention Coil frost preve...

Page 14 - OUTDOOR UNIT: MXZ series; AUTO

14 NOTE 2 FOR MULTI SYSTEM AIR CONDITIONER OUTDOOR UNIT: MXZ series Multi system air conditioner can connect two or more indoor units with one outdoor unit. • When you try to operate two or more indoor units with one outdoor unit simultaneously, one for the cooling and the others for heating, the op...

Page 15 - PROGRAM TIMER

15 9-7. TIMER OPERATION 1. How to set the time (1) Check that the current time is set correctly. NOTE: Timer operation will not work without setting the current time. Initially “0:00” blinks at the current time display of TIME MONITOR, so set the current time correctly with CLOCK SET button. How to ...

Page 16 - How to set the weekly timer

16 9-8. WEEKLY TIMER OPERATION • A maximum of 4 ON or OFF timers can be set for individual days of the week.• A maximum of 28 ON or OFF timers can be set for a week. * Make sure that the current time and day are set correctly. (1) Press button to enter the weekly timer setting mode. (2) Press and bu...

Page 17 - How to cancel operation

17 (5) Press button to turn the weekly timer ON. ( lights.) •When the weekly timer is ON, the day of the week whose timer setting is complete, will light. Press button again to turn the weekly timer OFF. ( goes out.) NOTE: The saved settings will not be cleared when the weekly timer is turned OFF. 2...

Page 18 - How to replace batteries; TROUBLESHOOTING

18 10-1. CAUTIONS ON TROUBLESHOOTING 1. Before troubleshooting, check the following 1) Check the power supply voltage.2) Check the indoor/outdoor connecting wire for miswiring. 2. Take care of the following during servicing 1) Before servicing the air conditioner, be sure to turn OFF the main unit f...

Page 20 - Indoor unit failure mode table

20 2. Indoor unit failure mode table The left lamp of OPERATION INDI- CATOR lamp Abnormal point (Failure mode) Condition Remedy Not lighted Normal — — 1-time fl ash every 0.5-second Room temperature thermistor The room temperature thermistor short or open circuit is detected every 8 seconds dur-ing ...

Page 24 - A Check of indoor fan motor

24 A Check of indoor fan motor 10-6. TROUBLESHOOTING FLOW The indoor fan motor error has occurred, and the indoor fan does not operate. Turn OFF the power supply. Is there any foreign matter that interferes the rotation of the line fl ow fan? Yes No Remove the foreign matter and adjust the line fl o...

Page 26 - C Check of indoor P.C. board and indoor fan motor

26 C Check of indoor P.C. board and indoor fan motor Turn OFF the power supply. Remove indoor fan motor connector CN211 from indoor power P.C. board and vane motor connector CN151 from the indoor electronic control P.C. board and turn ON the power supply. Does the unit operate with the remote contro...

Page 27 - D How to check miswiring and serial signal error; MUZ Type

27 D How to check miswiring and serial signal error Turn OFF inverter-controlled lighting equipment.Turn OFF the power supply and then turn ON again.Press EMERGENCY OPERATION switch. ••• A Is serial signal error indicated 6 minutes later? B Yes Reinstall either the unit or the light away from each o...

Page 28 - MXZ Type

28 Turn OFF inverter-controlled lighting equipment.Turn OFF the power supply and then turn ON again.Press EMERGENCY OPERATION switch. • • • A Is serial signal error indicated 6 minutes later? B Yes Reinstall either the unit or the light away from each other.Attach a fi lter on remote control receiv-...

Page 29 - E Electromagnetic noise enters into TV sets or radios

29 E Electromagnetic noise enters into TV sets or radios Yes Is the unit earthed? No Earth the unit. Yes Is the distance between the antennas and the indoor unit within 3 m, or is the distance between the antennas and the outdoor unit within 3 m? No Extend the distance between the antennas and the i...

Page 31 - Removing the panel; DISASSEMBLY INSTRUCTIONS; Removal procedure

MSZ-SF25VE MSZ-SF35VE MSZ-SF42VE MSZ-SF50VE NOTE: Turn OFF power supply before disassembly. OPERATING PROCEDURE PHOTOS 1. Removing the panel (1) Remove the horizontal vanes. (2) Remove the screw caps of the panel. Remove the screws of the panel. (3) Unhook the lower part ( ) of the panel. (4) Pull t...

Page 32 - Remove the indoor electrical box

OPERATING PROCEDURE PHOTOS 2. Remove the indoor electrical box (1) Remove the panel (Refer to 1.) and the corner box right. (2) Remove the screw of the V.A. clamp. Remove the V.A. clamp and the indoor/outdoorconnecting wire. (3) Remove the earth wire connected to the indoor heat exchanger from the e...

Page 33 - Removing the nozzle assembly; Photo 4

OPERATING PROCEDURE PHOTOS 4. Removing the nozzle assembly (1) Remove the panel (Refer to 1.) and the corner box right. (2) Remove the indoor/outdoor connecting wire (Refer to 2.).(3) Remove the electrical cover (Refer to 2.).(4) Disconnect the following connector: <Indoor electronic control P.C....

OPERATING PROCEDURE PHOTOS 6. Removing the indoor fan motor, the indoor coil thermistor and the line flow fan (1) Remove the panel (Refer to 1.) and the corner box right. (2) Remove the indoor electronic control P.C. board holder, the electrical box and the nozzle assembly. (3) Remove the screws fix...

Mitsubishi MSZ-SF50VE- User Manual

Table of Contents:

Summary

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