Service manual

ManualsBrandsMitsubishi Electric ManualsDomestic AppliancesMUZ-A09YVH-E1

SERVICE MANUAL

CONTENTS

1. PART NAMES AND FUNCTIONS······················2

2. SPECIFICATION·················································4

3. NOISE CRITERIA CURVES·······························5

4. OUTLINES AND DIMENSIONS ·························6

5. WIRING DIAGRAM ············································7

6. REFRIGERANT SYSTEM DIAGRAM················7

7. SERVICE FUNCTIONS ······································8

8. TROUBLESHOOTING······································10

9. DISASSEMBLY INSTRUCTIONS ····················19

10. PARTS LIST······················································21

11. OPTIONAL PARTS···········································23

Wireless type

Models

MSZ-A09YV -

(WH)

MSZ-A12YV -

(WH)

No. OB327

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

Indication of model name

MSZ-A09YV -

MSZ-A12YV -

NOTE:

This service manual describes technical data of the indoor units.

•Refer to the service manual OB328 when MSZ-A09YV- or MSZ-A12YV- is connected

with MUZ-A09YV- , MUZ-A12YV- , MUZ-A09YVH- or MUZ-A12YVH- .

•Refer to the service manual OB319 when MSZ-A09YV- or MSZ-A12YV- is connected

with MXZ-A18WV- , MXZ-A26WV- or MXZ-A32WV- as multi system units.

E1E1E1

E1E1

E1E1E1E1

E1E1

OB327 --1qxp 04.1.8 1:41 PM Page 1

Summary of content (24 pages)

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OB327 --1qxp 04.1.8 1:41 PM Page 1 SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS No. OB327 SERVICE MANUAL Wireless type Models MSZ-A09YV MSZ-A12YV - E1 (WH) E1 (WH) CONTENTS Indication of model name MSZ-A09YV - E1 MSZ-A12YV - E1 1. PART NAMES AND FUNCTIONS······················2 2. SPECIFICATION·················································4 3. NOISE CRITERIA CURVES ·······························5 4. OUTLINES AND DIMENSIONS ·························6 5.
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OB327 --1qxp 1 04.1.
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OB327 --1qxp 04.1.8 1:41 PM Page 3 MSZ-A09YV - E1 MSZ-A12YV - E1 Signal transmitting section Operation display section PM AM OPERATE /STOP (ON /OFF) button TOO ON/OFF WARM TOO COOL TEMPERATURE buttons Indication of remote controller model Open the front lid. ˚C CLOCK AMPM AM TOO ON/OFF WARM TOO COOL FAN SPEED CONTROL button VANE CONTROL button FAN STOP VANE START OFF-TIMER button I FEEL HEAT DRY AUTO ON-TIMER button COOL MODE HR. ECONO COOL MIN.
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OB327 --1qxp 04.1.8 1:41 PM 2 Page 4 SPECIFICATION Indoor model MSZ-A09YV - Function MSZ-A12YV - E1 Cooling Cooling Power supply Special remarks Fan motor Electrical data Capacity Air flow(High/Med.W/LowW) K /h Power outlet A Running current ✽1 A Power input Rated frequency W Auxiliary heater A(kW) Power factor ✽1 % Fan motor current ✽1 A Model Winding " resistance(at20:) Dimensions WOHOD mm Weight kg Air direction Sound level(High/Med.W/LowW) dB(A) Fan speed(High/Med.
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OB327 --1qxp 04.1.8 1:41 PM 3 Page 5 NOISE CRITERIA CURVES MSZ-A09YV - E1 MSZ-A12YV - E1 FAN SPEED FUNCTION High SPL(dB(A)) COOLING 37 HEATING 38 FAN SPEED FUNCTION LINE OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.
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Page 6 OUTLINES AND DIMENSIONS INDOOR UNIT 81.5 783 133.5 41 2.5 231.5 Installation plate Indoor unit 815 81.5 326 326 4.5 Unit : mm MSZ-A09YV - E1 271 4 04.1.8 1:41 PM 42 OB327 --1qxp 81.5 Wall hole [65 149 606 58 19 Power supply cord Lead to right 1.0m Lead to left 0.3m 162 Installation plate { 90 30 60 5 7 or more 278 242 Air in 110 Air out 244 Liquid line [6.35-0.5m Gas line [9.52-0.43m Insulation [37 O.D [21 I.
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OB327 --1qxp 04.1.8 1:41 PM 5 Page 7 WIRING DIAGRAM MSZ-A09YV - E1 MSZ-A12YV - E1 INDOOR UNIT TO OUTDOOR TB UNIT L CONNECTING 12V MODELS WIRING DIAGRAM BRN 3 RED N BLU F12 BLU 1 BLU 230V~ 2 BLU 2 WHT 52C GRN GRN/YLW CN 109 CN 125 3 5 2 L 12V TO OUTDOOR UNIT CONNECTING 3 CN 121 SR141 SR142 BLK GRY 1 2 3 MF BRN 4 WHT 5 RED 6 YLW 1 3 5 CN211 ELECTRONIC CONTROL P.C.
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OB327 --1qxp 04.1.8 1:41 PM 7 Page 8 SERVICE FUNCTIONS MSZ-A09YV - E1 MSZ-A12YV - E1 7-1. TIMER SHORT MODE For service, set time can be shortened by short circuit of JPG and JPS the electronic control P.C. board. The time will be shortened as follows. (Refer to page 18.) Set time : 1-minute ➔ 1-second Set time : 3-minute ➔ 3-second (It takes 3 minutes for the compressor to start operation. However, the starting time is shortened by short circuit of JPG and JPS.) 7-2. P.C.
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OB327 --1qxp 04.1.8 1:41 PM Page 9 How to release “AUTO RESTART FUNCTION” 1Turn off the main power for the unit. 2Pull out the indoor electronic control P.C. board and the power monitor receiver P.C.board. (Refer to page 19.) 3Solder the Jumper wire to the JR07 on the indoor electronic control P.C.board. (Refer to page 18.) 1 C1 CN1V1 CN111 IC101 1 CN1R1 CN121 CN112 21 N CN201 C 52C SW1 CN151 JR07 Operation 1 If the main power (230V AC) has been cut, the operation settings remain.
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OB327 --1qxp 8 04.1.8 1:41 PM Page 10 TROUBLESHOOTING MSZ-A09YV - E1 MSZ-A12YV - E1 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 the following during servicing.
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OB327 --1qxp 04.1.8 1:41 PM Page 11 5. How to install the horizontal vanes If horizontal vanes are not installed correctly, both of the operation indicator lamps will flash. In this case, install the horizontal vanes correctly by following the procedures 1 to 6. NOTE: Before installation of the horizontal vanes, disconnect the power supply plug and/ or turn off the breaker. Upper vane Insert this end first. 6 Stopper 5 Stopper 4 Insert. In. Lock. Lock.
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OB327 --1qxp 04.1.8 1:41 PM Page 12 8-2. Instruction of troubleshooting Start Indoor unit operates. Outdoor unit doesn't operate. Outdoor unit operates in only Test Run operation. Check room temperature thermistor. Refer to "Test point diagram and voltage" on page 18. Outdoor unit doesn't operate even in Test Run operation. Refer to "Check of inverter/ compressor". Indoor unit doesn't receive the signal from remote controller. OPERATION INDICATOR lamp on the indoor unit is flashing on and off.
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OB327 --1qxp 04.1.8 1:41 PM Page 13 1. Troubleshooting check table • The following indication applies regardless of shape of the indicator. flashing · Flashing of the OPERATION INDICATOR lamp (on the left or both) Operation Indicator indicates possible abnormalities. · The OPERATION INDICATOR lamp (on the left) is lighting during normal operation. NOTE : Before taking measures, make sure that the symptom reappears for accurate troubleshooting. Self check table No.
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OB327 --1qxp 04.1.8 1:42 PM Page 14 2. Trouble criterion of main parts MSZ-A12YV - E1 Check method and criterion Measure the resistance with a tester. (Part temperature 10˚C ~ 30˚C) Normal 8 k" ~ 20 k" Motor part Indoor coil thermistor (RT12(MAIN), RT13(SUB)) Indoor fan motor(MF) Vane motor(MV) Abnormal Open or short-circuit Measure the resistance between the terminals with a tester.
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OB327 --1qxp 04.1.8 1:42 PM Page 15 Indoor unit operates by pressing the EMERGENCY OPERATION switch, but does not operate with the remote controller. B Check of remote controller and receiver P.C. board wCheck if the remote controller is exclusive for this air conditioner. Switch on the remote controller. No Is LCD display on the the remote controller visible? Indoor electronic control P.C. board 3 1 1 2 CN109 CN125 Replace the batteries.(Refer to page 10.
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OB327 --1qxp 04.1.8 1:42 PM Page 16 When OPERATION INDICATOR lamp flashes ON and OFF in every 0.5-second or flashes once. Outdoor unit doesn’t operate. D How to check mis-wiring Start • Turn ON the power supply. • Press once EMERGENCY OPERATION switch. w Short circuit of JPG and JPS on the indoor electronic control P.C. board enables self -check to be displayed in 3 seconds. After three minutes, mis-wiring is indicated (0.5-second ON, 0.5-second OFF) on OPERATION INDICATOR lamp on indoor unit.
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OB327 --1qxp 04.1.8 1:42 PM Page 17 When both OPERATION INDICATOR lamps flash 1-time. Indoor unit and outdoor unit don’t operate. E Check of installation of the horizontal vanes Start Turn OFF the power supply. Is the stopper of the horizontal vane locked to the indoor unit correctly? No Relock the stopper of the horizontal vane to the indoor unit. Refer to page 11. Yes Turn ON the power supply.
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OB327 --1qxp 04.1.8 1:42 PM Page 18 TEST POINT DIAGRAM AND VOLTAGE MSZ-A09YV - E1 MSZ-A12YV - E1 Indoor electronic control P.C. board } Fuse F11 250V AC 3.15A Power supply input 230V AC R132 } Indoor fan motor 230V AC Safety device of fan by horizontal vane CN1R1 Room temperature thermistor RT11 Indoor coil thermistor RT12(MAIN) RT13(SUB) Varistor (NR11) J12 12V DC { } + – J33 Timer short mode point JPG, JPS (Refer to page 8.) Emergency operation switch Power monitor receiver P.C.
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OB327 --1qxp 04.1.8 1:42 PM 9 Page 19 DISASSEMBLY INSTRUCTIONS <"Terminal with lock mechanism" Detaching points> In case of terminal with lock mechanism, detach the terminal as shown below. There are two types ( Refer to (1) and (2)) of the terminal with lock mechanism. The terminal with no lock mechanism can be removed by pulling it out. Check the shape of the terminal and work. (1) Slide the sleeve and check if there is a locking lever or not.
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OB327 --1qxp 04.1.8 1:42 PM Page 20 OPERATING PROCEDURE PHOTOS 3. Removing the electrical box (1) (2) (3) (4) (5) (6) (7) Remove the panel. (Refer to 1.) Remove the electrical cover. (Refer to 2.) Remove the V.A. clamp. (Refer to 2.) Remove the cord clamp. (Refer to 2.) Remove the terminal block. (Refer to 2.) Remove the screw of ground wire. (Refer to 2.
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OB327 --1qxp 04.1.8 1:42 PM 10 Page 21 PARTS LIST MSZ-A09YV - E1 (WH) MSZ-A12YV - E1 (WH) 10-1. INDOOR UNIT STRUCTURAL PARTS 1 (w) 10-2. ACCESSORY AND REMOTE CONTROLLER 11 10 9 (w) 8 2 7 (See page 23.) 3 4 (w) These figures show about MSZ-A12YV. 5 6 10-1. INDOOR UNIT STRUCTURAL PARTS No. 1 2 3 4 5 6 7 8 9 Part No.
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OB327 --1qxp 04.1.8 1:42 PM Page 22 MSZ-A09YV - E1 (WH) MSZ-A12YV - E1 (WH) 10-4. INDOOR UNIT HEAT EXCHANGER 10-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS 21 SLEEVE BEARING 20 19 23 (W) 18 17 2 1 15 ROOM TEMPERATURE THERMISTOR 3 16 4 5 14 24 25 13 6 FUSE 7 VARISTOR 89 10 11 (W) This figure shows about MSZ-A12YV. 12 10-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS Part number that is circled is not shown in the illustration. No.
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OB327 --1qxp 04.1.8 1:42 PM Page 23 10-5. AIR CLEANING FILTER ● AIR CLEANING FILTER removes fine dust of 0.01 micron from air by means of static electricity. ● Normal life of AIR CLEANING FILTER is 4 months. However, when it becomes dirty, replace it as soon as possible. ● Clogged AIR CLEANING FILTER may reduce the air conditioner capacity or cause frost on the air outlet. ● DO NOT reuse AIR CLEANING FILTER even if it is washed. ● DO NOT remove or attach AIR CLEANING FILTER during unit operation.
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OB327 --1qxp 04.1.8 1:42 PM Page 24 HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN C Copyright 2004 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD Distributed in Jan. 2004. No. OB327 6 Made in Japan New publication, effective Jan. 2004 Specifications subject to change without notice.