Table of Contents
Advertisement
Quick Links
INDOOR UNIT
SERVICE MANUAL
Models
MSZ-AP15VG
MSZ-AP20VG
MSZ-AP15VG
MSZ-AP20VG
-
E1
ET1
ER1
,
,
-
E1
ET1
ER1
,
,
Outdoor unit service manual
MUZ-AP∙VG Series (OBH839)
MXZ-D∙VA Series (OBH626)
MXZ-E∙VA Series (OBH723)
MXZ-F∙VF Series (OBH790)
CONTENTS
1. TECHNICAL CHANGES ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 3
2. PART NAMES AND FUNCTIONS ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 4
3. SPECIFICATION ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 5
4. NOISE CRITERIA CURVES ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 6
5. OUTLINES AND DIMENSIONS ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 7
6. WIRING DIAGRAM ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 8
7. REFRIGERANT SYSTEM DIAGRAM ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 9
8. SERVICE FUNCTIONS ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 10
10. TROUBLESHOOTING ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 18
11. DISASSEMBLY INSTRUCTIONS ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 30
PARTS CATALOG (OBB838A)
Revision A:
• MSZ-AP15/20VG-
have been added.
ER1
OBB838 is void.
No. OBH838A
Advertisement
Table of Contents
Related Manuals for Mitsubishi Electric OBH839
Summary of Contents for Mitsubishi Electric OBH839
-
Page 1: Table Of Contents
INDOOR UNIT No. OBH838A SERVICE MANUAL Models MSZ-AP15VG MSZ-AP20VG Outdoor unit service manual MUZ-AP∙VG Series (OBH839) MXZ-D∙VA Series (OBH626) MXZ-E∙VA Series (OBH723) MXZ-F∙VF Series (OBH790) CONTENTS 1. TECHNICAL CHANGES ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 3 2. PART NAMES AND FUNCTIONS ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 4 3. SPECIFICATION ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 5 4. - Page 2 Use the specified refrigerant only Never use any refrigerant other than that specified. Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of. Correct refrigerant is specified in the manuals and on the spec labels provided with our products. We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to follow the instructions.
-
Page 3: Technical Changes
TECHNICAL CHANGES These models are compatible with the outdoor units with low standby power control. Connecting these models to the MUZ-AP∙VG series outdoor units enables the low standby power control. These models may be connected to the MUZ-AP∙VG series after once connected to the MXZ series and operated, for exam- ple because of relocation. -
Page 4: Part Names And Functions
PART NAMES AND FUNCTIONS MSZ-AP15VG MSZ-AP20VG Air inlet Front panel Air fi lter Horizontal vane Air outlet Heat exchanger Emergency Spec name plate operation switch Operation Remote controller indicator lamp Remote control receiving section ACCESSORIES Installation plate Installation plate fixing screw 4 × 25 mm Wireless remote controller Felt tape (Used for left or left-rear piping) Battery (AAA) for remote controller... -
Page 5: Specification
SPECIFICATION Indoor model MSZ-AP15VG MSZ-AP20VG Power supply Single phase 230 V, 50 Hz Cooling Power input 1 Heating Cooling 0.17 0.19 Running current 1 Heating 0.17 0.19 Model RC0J30-CW Cooling 0.17 0.19 Current 1 Heating 0.17 0.19 Dimensions W × H × D 760 ×... -
Page 6: Noise Criteria Curves
NOISE CRITERIA CURVES MSZ-AP15VG MSZ-AP20VG FAN SPEED FUNCTION SPL(dB(A)) LINE FAN SPEED FUNCTION SPL(dB(A)) LINE COOLING COOLING Super High Super High HEATING HEATING NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 NC-20 NC-20 NC-10 NC-10 1000 2000 4000 8000 1000 2000... -
Page 7: Outlines And Dimensions
OUTLINES AND DIMENSIONS Unit: mm MSZ-AP15VG MSZ-AP20VG INSTALLATION PLATE 11×26 OBLONG HOLE 11×20 OBLONG HOLE INDOOR UNIT (45) ø WALL HOLE 299.5 80.5 335.5 INSTALLATION PLATE AIR IN PIPING MIN 30mm MIN 20mm DRAIN HOSE (66) AIR OUT Insulation ø35 O.D Liquid line ø6.35 - 0.39m (Flared connection ø6.35) Gas line... -
Page 8: Wiring Diagram
WIRING DIAGRAM MSZ-AP15VG - MSZ-AP20VG - MSZ-AP15VG - MSZ-AP20VG - SEMBOL PARÇA ADI SEMBOL PARÇA ADI SİGORTA ODA SICAKLIK DIŞ ÜNİTEYE (T3.15AL250V) TERMİSTÖRÜ BORU SICAKLIK FAN MOTORU TERMİSTÖRÜ(ANA) KANAT MOTORU BORU SICAKLIK (YATAY ÜST) TERMİSTÖRÜ(YARDIMCI) KANAT MOTORU TERMİNAL BLOĞU (YATAY ALT) İÇ... -
Page 9: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM MSZ-AP15VG MSZ-AP20VG Unit: mm Refrigerant pipe ø9.52 (with heat insulator) Indoor coil Indoor thermistor heat RT12 (main) exchanger Flared connection Indoor coil thermistor RT13 (sub) Room temperature thermistor RT11 Flared connection Refrigerant pipe ø6.35 (with heat insulator) Refrigerant flow in cooling Refrigerant flow in heating OBH838A... -
Page 10: Service Functions
SERVICE FUNCTIONS MSZ-AP15VG MSZ-AP20VG 8-1. TIMER SHORT MODE For service, the following set time can be shortened by bridging the timer short mode point on the electronic control P.C. board. (Refer to 10-7.) • The set time for the ON/OFF timer can be reduced to 1 second for each minute. •... -
Page 11: Microprocessor Control ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙11
MICROPROCESSOR CONTROL MSZ-AP15VG MSZ-AP20VG WIRELESS REMOTE CONTROLLER Signal transmitting section Distance of signal : Battery replacement indicator About 6 m Beep(s) is (are) heard from the indoor unit when the signal is received OPERATION SELECT button Operation display section FAN SPEED CONTROL button ECONO COOL button VANE CONTROL button TIME, TIMER set buttons... - Page 12 9-1. COOL ( ) OPERATION (1) Press STOP/OPERATE(OFF/ON) button. OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone. (2) Select COOL mode with OPERATION SELECT button. (3) Press TEMPERATURE buttons (TEMP button) to select the desired temperature. The setting range is 16 - 31°C. 1.
- Page 13 9-5. AUTO CHANGE OVER ∙∙∙ AUTO MODE OPERATION Once desired temperature is set, unit operation is switched automatically between COOL and HEAT operation. Mode selection (1) Initial mode When unit starts the operation with AUTO operation from OFF: • If the room temperature is higher than the set temperature, operation starts in COOL mode. •...
- Page 14 (5) STOP (operation OFF) and ON TIMER standby In the following cases, the horizontal vane returns to the closed position. (a) When STOP/OPERATE(OFF/ON) button is pressed (POWER OFF). (b) When the operation is stopped by the emergency operation. (c) When ON TIMER is ON standby. (6) Dew prevention During COOL or DRY operation with the vane angle at Angle 4 or 5 when the compressor cumulative operation time exceeds 1 hour, the vane angle automatically changes to Angle 1 for dew prevention.
- Page 15 PROGRAM TIMER • OFF timer and ON timer can be used in combination. The set time that is reached first will operate first. • “ ” and “ ” display shows the order of OFF timer and ON timer operation. (Example 1) The current time is 8:00 PM.
- Page 16 (3) Press , and buttons to set ON/OFF, time, and temperature. E.g. : [ON], [6:00] and [24°C] are selected. Pressing selects ON/OFF timer. Pressing Pressing adjusts the time. adjusts the tem- Pressing perature. deletes timer setting. * Hold down the button to change the time quickly. Press buttons to continue setting the timer for other days and/or numbers.
- Page 17 9-10. i-save ( ) OPERATION 1. How to set i-save operation (1) Press STOP/OPERATE(OFF/ON) button. (2) Select COOL, HEAT, ECONO COOL or NIGHT MODE. (3) Press i-save button. (4) Set the temperature, fan speed, and airflow direction for i-save operation. NOTE: •...
-
Page 18: Troubleshooting
TROUBLESHOOTING MSZ-AP15VG MSZ-AP20VG 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 first with the remote controller, and then after confirming the horizontal vane is closed, turn OFF the breaker and/or disconnect the power plug. - Page 19 10-2. FAILURE MODE RECALL FUNCTION Outline of the function This air conditioner can memorize the abnormal condition which has occurred once. Even though LED indication listed on the troubleshooting check table (10-4.) disappears, the memorized failure details can be recalled. 1.
- Page 20 2. Table of indoor unit failure mode recall function Left lamp of OP- Abnormal point ERATION INDICA- Condition Remedy (Failure mode) TOR lamp Not lit Normal — — The room temperature thermistor short or 1-time blink every Room temperature Refer to the characteristics of the room temperature open circuit is detected every 8 seconds dur- 0.5-second thermistor...
- Page 21 10-3. INSTRUCTION OF TROUBLESHOOTING Start Indoor unit operates. Indoor unit operates. Indoor unit does OPERATION INDICATOR Outdoor unit does Outdoor unit does not receive the lamp on the indoor unit is not operate. not operate normally. signal from re- blinking ON and OFF. mote controller.
- Page 22 10-4. TROUBLESHOOTING CHECK TABLE Before taking measures, make sure that the symptom reappears for accurate troubleshooting. When the indoor unit has started operation and detected an abnormality of the following condition (the first detection after the power ON), the indoor fan motor turns OFF and OPERATION INDICATOR lamp blinks. OPERATION INDICATOR Blinking Not lit...
- Page 23 OPERATION INDICATOR Blinking Not lit Abnormal Operation indicator lamp Symptom Condition Remedy point Left lamp lights and lower lamp blinks. The operation mode of the each indoor unit MXZ type Outdoor unit is differently set to COOL (includes DRY) and •...
- Page 24 10-6. TROUBLESHOOTING FLOW A Check of indoor fan motor The indoor fan motor error has occurred, and the indoor fan does not operate. Turn OFF the power supply. Pay enough attention to the high voltage on the fan motor connector. Turn ON the power supply, wait 5 seconds or more, and then press EMERGENCY OPERATION switch.
- Page 25 B Check of remote controller and indoor electronic control P.C. board Check if the remote controller is exclusive for this air conditioner. Press STOP/OPERATE(OFF/ON) button on the remote controller. Look at the image of the signal transmitting section of the remote controller through the monitor of a digital camera or a camera phone.
- Page 26 C Check of indoor P.C. board and indoor fan motor Turn OFF the power supply. Remove indoor fan motor connector CN211 and vane motor connector CN151 from the Measure the resistance of indoor fan Short circuit: indoor electronic control P.C. board and turn motor.
- Page 27 D How to check miswiring and serial signal error Turn the main power supply OFF. Is there rated voltage in the power supply? Check the power supply. Check for incorrect indoor-outdoor connecting wiring. Was the indoor unit ever connected to the Multi (MXZ) series and operated (turned on)? The connection information to the Multi series is stored...
- Page 28 E Electromagnetic noise enters into TV sets or radios Is the unit earthed? Earth the unit. Is the distance between the antennas Extend the distance between the antennas and and the indoor unit within 3 m, or is the the indoor unit, and/or the antennas and the distance between the antennas and the outdoor unit.
- Page 29 10-7. TEST POINT DIAGRAM AND VOLTAGE MSZ-AP15VG MSZ-AP20VG Indoor electronic control P.C. board Power supply/ Fuse (F11) serial cord (CN201) T3.15AL250V Varistor (NR11) Resistor 230 V AC (R111) To disable "Auto restart function", cut the jumper wire to JR77. (Refer to 8-3.) Indoor fan motor (CN211) (+) 0 V DC or...
-
Page 30: Disassembly Instructions
DISASSEMBLY INSTRUCTIONS <Detaching method of the terminal with locking mechanism> The terminal which has the locking mechanism can be detached as shown below. There are following 2 types of the terminal with locking mechanism. The terminal without locking mechanism can be detached by pulling it out. Check the shape of the terminal before detaching. - Page 31 OPERATING PROCEDURE PHOTOS/FIGURES 2. Removing the indoor electronic control P.C. Photo 2 board, receiver P.C. board, display P.C. board, and SW P.C. board (1) Remove the panel (refer to section 1) and the corner box. Screw of the (2) Remove the screw of the V.A. clamp. Remove the V.A. V.A.
- Page 32 OPERATING PROCEDURE PHOTOS/FIGURES Photo 5 3. Removing the electrical box Front cover of the display holder (1) Remove the panel (refer to section 1) and the corner box. Catch (2) Remove the indoor/outdoor connecting wire, the SW holder, the display holder, the electrical cover and the Catch earth wire connected to the indoor electronic control P.C.
- Page 33 OPERATING PROCEDURE PHOTOS/FIGURES 6. Removing the indoor fan motor and the line flow fan Photo 8 Catches of the water cover (1) Remove the panel (refer to section 1) and the corner box. (2) Remove the SW holder, the display P.C. board holder, Motor band the electrical box (refer to section 3) and the nozzle assembly (refer to section 4).
- Page 34 Do not pull the lead wire when removing the indoor coil thermistor. HEAD OFFICE: TOKYO BUILDING., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN © Copyright 2019 MITSUBISHI ELECTRIC CORPORATION Issued: Dec. 2019. No. OBH838 REVISED EDITION-A Published: Apr. 2019. No. OBH838 Made in Japan Specifications are subject to change without notice.