Instruction/ maintenance manual of the product MSZ-CB22VA Mitsubishi
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CONTENTS 1. TECHNICAL CHANGES ····································2 2. P ART NAMES AND FUNCTIONS ······················3 3. SPECIFICA TION ·················································5 4.
2 1 TECHNICAL CHANGES MSZ-GA22V A- ➔ MSZ-CB22V A- MSZ-GA25V A- ➔ MSZ-CB25V A- MSZ-GA35V A- ➔ MSZ-CB35V A- E1 E1 E1 E1 E1 E1 1. Color of BOX and CORNER BOX has been changed to white. Revision:A • model has been added. •9-2. Failure mode recall function has been changed.
3 P ART NAMES AND FUNCTIONS 2 MSZ-CB22V A MSZ-CB25V A MSZ-CB35V A Line flow fan Air outlet Vertical vane Air inlet Display section Front panel Panel Heat exchanger Horizontal vane Operation section (W.
4 ACCESSORIES REMOTE CONTROLLER 1 2 3 4 5 6 7 Installation plate Installation plate fixing screw 4 o 25 mm Remote controller holder Fixing screw for 3 3.
5 SPECIFICA TION 3 T3.15AL 250V MSBPC20M16 12V DC 250 " (at 25 ˚ C) ERZV14D471 3P INDOOR UNIT Fuse Horizontal vane motor V aristor T erminal block (F1 1) (MV) (NR1 1) (TB) Specifications and rat.
6 4 NOISE CRITERIA CUR VES 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.
7 OUTLINES AND DIMENSIONS 5 MSZ-CB25V A Unit : mm 155 155 335 320 41.5 215 42.5 214 3 287.5 70 55 55 55 225 225 or more 7 100 90 106 298 102 624.5 780 210 5 53.
8 6 WIRING DIAGRAM REFRIGERANT SYSTEM DIAGRAM 7 MSZ-CB22V A MSZ-CB25V A MSZ-CB35V A Indoor heat e xchanger Flared connection Room temperature thermistor RT 1 1 Indoor coil thermistor R T13(sub) Flared connection Refrigerant flow in cooling Refrigerant flow in heating Refrigerant pipe [ 9.
9 SER VICE FUNCTIONS 8 8-2. P .C. BOARD MODIFICA TION FOR INDIVIDUAL OPERA TION 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.
10 TROUBLESHOOTING 9 9-1. 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.
11 2 1 Stopper Lock. Left Insert this end first. 3. T roubleshooting procedure 1) First, check if the OPERA TION INDICA TOR lamp on the indoor unit is flashing on and off to indicate an abnormality . T o make sure, check how many times the abnormality indication is flashing on and off before starting service work.
12 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 (9-4.) disappears, the memorized failure details can be recalled. This mode is very useful when the unit needs to be repaired for the abnormality which doesn't recur .
13 2. Indoor unit failure mode table NOTE : Blinking patterns of this mode differ from the ones of T roubleshooting check table(9-4.). 12-time flash 2.5-second OFF Replace the indoor electronic control P.C. board. Indoor control system When it cannot properly read data in the nonvolatile memory of the indoor electronic control P.
14 Start Indoor unit operates. Outdoor unit doesn't operate. Indoor unit doesn't receive the signal from remote controller . OPERA TION INDICA TOR lamp on the indoor unit is flashing on and off. Outdoor unit operates only in T est Run operation.
15 No. 1 3 6 7 Symptom Operation indicator lamp Condition Correspondence Left lamp flashes. 0.5-second ON 0.5-second OFF Mis-Wiring or serial signal Outdoor power system Outdoor thermistors Outdoor control system Indoor coil thermistor When the serial signal from the outdoor unit is not received for a maximum of 6 minutes.
16 OPERA TION INDICA TOR Not lighted Blinking Lighted OPERA TION INDICA TOR Not lighted Blinking Lighted No. 1 Symptom Operation indicator lamp Condition Correspondence Abnormal point 0.5-second ON 0.5-second OFF When the electricity is not conducted to the interlock switch (Fan) of the horizontal vane.
17 Check of indoor fan motor A When OPERA TION INDICA TOR 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.
18 Check of remote controller and receiver P .C. board B Indoor unit operates by pressing EMERGENCY OPERA TION switch, but does not operate with the remote controller . w Check if the remote controller is exclusive for this air conditioner . Ye s Replace the batteries.
19 The unit does not operate with the remote controller . Also, OPERA TION INDICA TOR lamp does not light up by pressing EMERGENCY OPERA TION 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.
20 How to check mis-wiring and serial signal error D Is there rated voltage 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.
21 Check of installation of the horizontal vane E Replace the indoor electronic control P .C. board. Replace the interlock switch(Fan). Is the stopper of the horizontal vane locked to the indoor unit correctly? Ye s No Is there resistance 0 " ? Relock the stopper of the horizontal vane to the indoor unit.
22 Electromagnetic noise enters into TV sets or radios F 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 the antennas and.
23 Indoor coil thermistor [RT12 (MAIN), RT13 (SUB)] Room temperature thermistor (RT1 1) T emperature ( : ) Resistance (k " ) MSZ-CB22V A MSZ-CB25V A MSZ-CB35V A Indoor electronic control P .C. board Release of Auto restart function Solder the Jumper wire to JR07 (Refer to 8-3.
24 DISASSEMBL Y INSTRUCTIONS 10 (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 .
25 2. Removing the electronic control P .C. board, the power monitor receiver P .C. board, SW P .C. board and the terminal block (1) Remove the horizontal vane, the panel (Refer to 1.) and the corner box. (2) Remove the screw of V .A. clamp, and then the indoor/outdoor connecting wire.
26 OPERA TING PROCEDURE PHOTOS Photo 6 Photo 8 Screws of the left side of the heat exchanger 4. Removing the horizontal vane motor unit (1) Remove the horizontal vane and the panel. (Refer to 1.) (2) Remove the screws of the horizontal vane motor unit, and pull out the horizontal vane motor unit.
27 P ARTS LIST (non-RoHS compliant) 11 MSZ-CB22V A MSZ-CB25V A MSZ-CB35V A 1 1-1. INDOOR UNIT STRUCTURAL P ARTS No. Part No. Part name Remarks Symbol in Wiring Diagram Q'ty/unit 1 2 3 4 5 6 7 8 9.
28 1 1-3. INDOOR UNIT ELECTRICAL P ARTS AND FUNCTIONAL P ARTS MSZ-CB22V A MSZ-CB25V A MSZ-CB35V A 4 2 5 3 9 1 6 22 1 1-4. INDOOR UNIT HEA T EXCHANGER 10 8 7 12 13 14 15 16 21 24 23 11 15 15 19 17 18 20 P ARTS LIST (non-RoHS compliant) OB441--1.qxp 06.
29 BEARING MOUNT SLEEVE BEARING DRAIN HOSE NOZZLE ASSEMBL Y V ANE MOTOR UNIT (HORIZONT AL) INTERLOCK SWITCH(F AN) HORIZONT AL V ANE FUSE V ARISTOR POWER MONITOR RECEIVER P .C. BOARD HOLDER V .A. CLAMP TERMINAL BLOCK COVER TERMINAL BLOCK HOLDER TERMINAL BLOCK ELECTRONIC CONTROL P .
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31 RoHS P ARTS LIST (RoHS compliant) 12 MSZ-CB22V A MSZ-CB25V A MSZ-CB35V A 12-1. INDOOR UNIT STRUCTURAL P ARTS No. Part No. Part name Remarks Symbol in Wiring Diagram Q'ty/unit 1 2 3 4 5 6 7 8 9.
32 12-3. INDOOR UNIT ELECTRICAL P ARTS AND FUNCTIONAL P ARTS MSZ-CB22V A MSZ-CB25V A MSZ-CB35V A 4 2 5 3 9 1 6 22 12-4. INDOOR UNIT HEA T EXCHANGER 10 8 7 12 13 14 15 16 21 24 23 11 15 15 19 17 18 20 RoHS P ARTS LIST (RoHS compliant) OB441--2.qxp 06.12.
33 BEARING MOUNT SLEEVE BEARING DRAIN HOSE NOZZLE ASSEMBL Y V ANE MOTOR UNIT (HORIZONT AL) INTERLOCK SWITCH(F AN) HORIZONT AL V ANE FUSE V ARISTOR POWER MONITOR RECEIVER P .C. BOARD HOLDER V .A. CLAMP TERMINAL BLOCK COVER TERMINAL BLOCK HOLDER TERMINAL BLOCK ELECTRONIC CONTROL P .
MAC-093SS-E Model Part No. MSZ-CB22V A MSZ-CB25V A MSZ-CB35V A 13-2. QUICK CLEAN KIT ● Y ou can sweep the surface of heat exchanger if you install the special-made brush to your vacuum cleaner .
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HEAD OFFICE: TOKYO BLDG, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAP AN C C Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO.,L TD Distributed in Jan. 2007. No. OB441 REVISED EDITION-A 6 Distributed in Dec. 2005. No. OB441 6 Made in Japan New publication, effective Jan.
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