Gebruiksaanwijzing /service van het product MSH-A18ND van de fabrikant Mitsubishi Electronics
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CONTENTS 1. TECHNICAL CHANGES ····································2 2. P ART NAMES AND FUNCTIONS ······················2 3. SPECIFICA TION ·················································4 4.
TECHNICAL CHANGES 2 1 P ART NAMES AND FUNCTIONS 2 INDOOR UNIT Grille Air inlet Remote controller Remote control receiving section Air cleaning filter (White bellows type) Horizontal vane V ertical van.
REMOTE CONTROLLER MSH-A18ND MSH-A24ND 3 ON/OFF TOO COOL PM AM TOO WARM ON/OFF FAN TOO WARM TOO COOL VANE MODE ECONO COOL STOP START HR. MIN. WIDE VANE LONG I FEEL COOL HEAT DRY PM CLOCK AM RESET CLOCK Open the front lid.
SPECIFICA TION 4 3 Indoor model Function Power supply Air flow (High/Med./Low) Running current Power input Power factor Model Current Winding resistance (at 20 : ) Dimensions W O H O D Weight Air direction Sound level (High/Med./Low) Fan speed (High/Med.
5 OUTLINES AND DIMENSIONS 4 258 162 19 58 47 7.5 315 255.5 47 2.5 98 173 98 173 414.5 414.5 5 253 791 56 1068 1100 325 Air out Air in Insulation [ 28 Drain hose [ 16 (Connected part O.D) Installation plate Wall hole [ 75 Wireless remote controller Installation plate Indoor unit { Liquid line [ 6.
6 WIRING DIAGRAM 5 MSH-A18ND INDOOR UNIT 1.About the outdoor side electric wiring, refer to the outdoor unit electric wiring diagram for servicing. 2.Use copper conductors only. (For field wiring) 3.Symbols below indicate. : Connector : Terminal block NOTES: SYMBOL C11 F11 HIC1 MF NAME INDOOR FAN CAPACITOR FUSE (3.
7 REFRIGERANT SYSTEM DIAGRAM 6 Refrigerant flow in cooling Refrigerant flow in heating Strainer #50 MSH-A18ND INDOOR UNIT Indoor heat exchanger Room temperature thermistor RT1 1 Refrigerant pipe [ 12.7 (with heat insulator) Flared connection Flared connection Indoor coil thermistor RT12 Refrigerant pipe [ 6.
8 SER VICE FUNCTIONS 7 When the indoor unit is controlled with the remote controller , the operation mode, 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 shutoff of the main power .
9 How to release “ AUTO REST ART FUNCTION ” 1 T urn off the main power for the unit. 2 Pull out the electronic control P .C. board, the receiver P .C. board and the display P .C.board. (Refer to 9-2.) 3 Solder jumper wire to JR07 on the indoor electronic control P .
10 TROUBLESHOOTING 8 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.
11 Start Indoor unit operates. Outdoor unit doesn't operate. Indoor unit doesn't receive the signal from remote controller . Indoor unit operates. Outdoor unit doesn't operate normally . OPERA TION INDICA TOR lamp on the indoor unit is flashing on and off.
12 8-3. T roubleshooting check table • The following indication applies regardless of shape of the indicator . • Before taking measures, make sure that the symptom reappears for accurate troubleshooting.
13 MSH-A18ND MSH-A24ND Part name Figure Check method and criterion Indoor fan motor(MF) MSH-A18ND INNER FUSE 145 : CUT OFF MSH-A24ND INNER PROTECTOR 135 i 5 : OPEN Color of lead wire WHT – BLK BLK – RED MSH-A18ND 198 " ~ 214 " 209 " ~ 227 " Measure the resistance with a tester .
14 Ye s Ye s Check of indoor fan motor A Check of remote controller and receiver P .C. board B When OPERA TION INDICA TOR lamp flashes 3-time. Indoor fan motor doesn ’ t operate. Repair or replace the indoor fan motor . Disconnect lead wires from connector CN21 1 on the indoor electronic control P .
15 Check of indoor electronic control P .C. board C Check the both “ par ts side ” and “ pattern side ” of indoor electronic control P .C. board visually . Replace the fuse. Is fuse(F11) blown? Replace the fan motor . Replace the indoor electronic control P .
16 How to check mis-wiring D 1. T urn OFF the power supply (outdoor unit) and disconnect indoor and outdoor connecting wire 3 on indoor side. 2. Short-circuit terminal block N - 3 by lead wire. 3. T urn ON the power supply (outdoor unit) and press EMERGENCY OPERA TION switch once.
17 8-6. T est point diagram and voltage MSH-A18ND MSH-A24ND Indoor electronic control P .C. board Indoor coil thermistor(RT12(main), RT13(sub)) Room temperature thermistor (RT1 1) Resistance(k " ) Fan motor power supply Fuse (F1 1) 250V AC 3.
18 DISASSEMBL Y INSTRUCTIONS 9 MSH-A18ND MSH-A24ND INDOOR UNIT (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 .
19 OPERA TING PROCEDURE PHOTOS Photo 4 Photo 6 V ane motors Indoor coil thermistor 3. Removing the electrical box (1) Remove the front panel. (Refer to 1.) (2) Remove the electrical cover . (Refer to 2.) (3) Disconnect the connector of the indoor coil thermistor .
20 P ARTS LIST (non-RoHS compliant) 10 MSH-A18ND MSH-A24ND 10-1. INDOOR UNIT STRUCTURAL P ARTS MSH-A24ND - S1 MSH-A18ND - S1 E02 527 970 E02 685 234 E02 888 000 E02 408 142 E02 685 067 E02 888 010 E02.
21 E02 527 302 E02 408 509 E02 001 504 E02 408 702 E02 996 235 E02 685 040 E02 685 041 E02 A49 382 E02 817 385 E02 527 034 E02 A17 300 E02 527 300 E02 448 303 E02 408 303 E02 817 333 E02 527 333 E02 5.
22 Air cleaning filter (White bellows type) 10-5. AIR CLEANING FIL TER ● AIR CLEANING FIL TER removes fine dust of 0.01 micron from air by means of static electricity . ● Normal life of AIR CLEANING FIL TER is 4 months. However , when it becomes dirty , replace it as soon as possible.
23 RoHS P ARTS LIST (RoHS compliant) 11 MSH-A18ND MSH-A24ND 1 1-1. INDOOR UNIT STRUCTURAL P ARTS MSH-A24ND - S1 MSH-A18ND - S1 E12 527 970 E12 685 234 E12 888 000 E12 408 142 E12 685 067 E12 888 010 E.
24 E12 527 302 E12 408 509 E12 001 504 E12 408 702 E12 996 235 E12 685 040 E12 685 041 E12 A49 382 E12 817 385 E12 527 034 E12 A17 300 E12 527 300 E12 448 303 E12 408 303 E12 817 333 E12 527 333 E12 5.
25 Air cleaning filter (White bellows type) 1 1-5. AIR CLEANING FIL TER ● AIR CLEANING FIL TER removes fine dust of 0.01 micron from air by means of static electricity . ● Normal life of AIR CLEANING FIL TER is 4 months. However , when it becomes dirty , replace it as soon as possible.
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New publication, effective May 2007 Specifications subject to change without notice. C C Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO.,L TD Distributed in May 2007. No.OB427 REVISED EDITION-B 6 Distributed in Feb. 2006. No.OB427 REVISED EDITION-A 106 Distributed in Nov .
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