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Table of Contents
- 1 Table of Contents
- 2 Indoor Unit
- 3 Service Manual
- 4 Technical Changes
- 5 Part Names and Functions
- 6 Specification
- 7 Noise Criteria Curves
- 8 Outlines and Dimensions
- 9 Wiring Diagram
- 10 Refrigerant System Diagram
- 11 Service Functions
- 12 Microprocessor Control
- 13 Wireless Remote Controller
- 14 Troubleshooting
- 15 Disassembly Instructions
- Download this manual
INDOOR UNIT
SERVICE MANUAL
Models
MSZ-AP15VF
MSZ-AP20VF
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
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E1
ER1
,
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E1
ER1
,
Outdoor unit service manual
MXZ-D·VA Series (OBH626)
MXZ-E·VA Series (OBH723)
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
9. MICROPROCESSOR CONTROL ····················11
10. TROUBLESHOOTING ····································· 18
11. DISASSEMBLY INSTRUCTIONS ···················· 30
PARTS CATALOG (OBB799)
No. OBH799
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Table of Contents
Related Manuals for Mitsubishi Electric MSZ-AP15VF-E1
Summary of Contents for Mitsubishi Electric MSZ-AP15VF-E1
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Page 1: Table Of Contents
INDOOR UNIT No. OBH799 SERVICE MANUAL Models MSZ-AP15VF MSZ-AP20VF Outdoor unit service manual MXZ-D·VA Series (OBH626) MXZ-E·VA Series (OBH723) CONTENTS 1. TECHNICAL CHANGES ··································· 3 2. PART NAMES AND FUNCTIONS ····················· 4 3. SPECIFICATION ················································ 5 4. NOISE CRITERIA CURVES ······························ 6 5. - 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.
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Page 3: Technical Changes
TECHNICAL CHANGES MSZ-AP15VF - MSZ-AP20VF - MSZ-AP15VF - MSZ-AP20VF - 1. New model OBH799... -
Page 4: Part Names And Functions
PART NAMES AND FUNCTIONS MSZ-AP15VF MSZ-AP20VF Air inlet Front panel Air lter Horizontal vane Air outlet Heat exchanger Emergency Spec name plate operation switch Remote controller Operation indicator lamp Remote control receiving section ACCESSORIES Installation plate Installation plate fi xing 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-AP15VF MSZ-AP20VF 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 RC0J40-FM 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-AP15VF MSZ-AP20VF 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-AP15VF MSZ-AP20VF 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 20mm MIN 30mm 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-AP15VF MSZ-AP20VF OBH799... -
Page 9: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM MSZ-AP15VF MSZ-AP20VF 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 OBH799... -
Page 10: Service Functions
SERVICE FUNCTIONS MSZ-AP15VF MSZ-AP20VF 8-1. TIMER SHORT MODE For service, the following set time can be shortened by bridging JPG and JPS 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
MICROPROCESSOR CONTROL MSZ-AP15VF MSZ-AP20VF 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 display section OPERATION SELECT button 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 9-9. i-save ( ) OPERATION 1. How to set i-save operation (1) Press STOP/OPERATE(OFF/ON) button. (2) Select COOL, HEAT or ECONO COOL mode. (3) Press i-save button. (4) Set the temperature, fan speed, and airfl ow direction for i-save operation. NOTE: •...
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Page 18: Troubleshooting
TROUBLESHOOTING MSZ-AP15VF MSZ-AP20VF 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: Obh799
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: Obh799
2. Indoor unit failure mode table Left lamp of OP- Abnormal point ERATION INDICA- Condition Remedy (Failure mode) TOR lamp Not lighted Normal — — The room temperature thermistor short or 1-time fl ash 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: Obh799
10-3. INSTRUCTION OF TROUBLESHOOTING Start Indoor unit operates. Indoor unit does Indoor unit oper- OPERATION INDICATOR Outdoor unit does ates. not receive the lamp on the indoor unit is not operate normally. signal from re- Outdoor unit fl ashing ON and OFF. mote controller. -
Page 22: Obh799
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 flashes. OPERATION INDICATOR Blinking Not lit... -
Page 23: Obh799
OPERATION INDICATOR Abnormal Operation indicator lamp Symptom Condition Remedy point Left lamp lights and lower lamp fl ashes. The operation mode of the each indoor unit MXZ type Outdoor unit is differently set to COOL (includes DRY) and • Unify the operation mode. Operation operates but HEAT at the same time, the operation mode... -
Page 24: Obh799
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: Obh799
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: Obh799
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: Obh799
D How to check miswiring and serial signal error Turn OFF the power supply. Is there rated voltage in Check the power the power supply? supply. Turn ON the power supply. Is there rated voltage between the outdoor terminal block S1 Check the wiring. -
Page 28: Obh799
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: Obh799
10-7. TEST POINT DIAGRAM AND VOLTAGE MSZ-AP15VF MSZ-AP20VF Indoor electronic control P.C. board Fuse (F11) Power supply/ T3.15AL250V Varistor (NR11) serial cord (CN201) Resistor (R111) 230 V AC Indoor fan motor (CN211) (+) 0 V DC or 15 V DC (+) 2-6 V 15 V DC Indoor coil thermis-... -
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: Obh799
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 1.) and the corner box. (2) Remove the screw of the V.A. clamp. Remove the V.A. Screw of the clamp and the indoor/outdoor connecting wire. -
Page 32: Obh799
OPERATING PROCEDURE PHOTOS/FIGURES Photo 5 3. Removing the electrical box Front cover of the display holder (1) Remove the panel (refer to 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: Obh799
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 1.) and the corner box. (2) Remove the SW holder, the display P.C. board holder, the electrical box (refer to 3.) and the nozzle assembly Motor band (Refer to 4.). -
Page 34: Obh799
Mount the clip-shape part on the marked position. Do not pull the lead wire when removing the indoor coil thermistor. HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN © Copyright 2018 MITSUBISHI ELECTRIC CORPORATION Published: Jan.2018. No. OBH799 Made in Japan...