Instruction/ maintenance manual of the product MUM18NW Mitsubishi Electronics
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TECHNICAL & SER VICE MANUAL DUCTLESS SPLIT -TYPE AIR CONDITIONERS CONTENTS 1. FEA TURES ·························································2 2. TECHNICAL CHANGES ····································3 3.
2 1 FEA TURES This “2 to 1” Multi system consists of a single outdoor unit with two compressors that permit up to two indoor units to be installed separate rooms, each with its own controller . 1.SP ACE-SA VING LA YOUT T wo indoor units are served by a single outdoor unit whose installation requires only minimum space.
3 2 TECHNICAL CHANGES 3 P ART NAMES AND FUNCTIONS OUTDOOR UNIT MUM18NW MSM18EW ➔ MSM18NW 1. Indoor unit has been changed. 2. Outdoor unit has been changed. 3. Remove controller has been changed. (The timer function was changed to the clock timer function.
4 4 SPECIFICA TIONS Model MSM18NW SINGLE DOUBLE Cooling capacity w 1 BTU/h 8,400 8,400 ✕ 2 850 1,700 9.9 10.0 MS09NW ✕ 2 White 1 15,60,1 15 0.5 0.37 208-265-328 177-226-279 – 5/8 32-1/16 7-3/16 10-13/16 18 Max.
Models Indoor air Outdoor intake air DB temperature ( ˚F ) MS09NW 71 67 63 TC 10.3 9.74 9.16 SHC 5.93 6.91 7.72 TPC 0.76 0.71 0.68 TC 9.61 9.07 8.48 SHC 5.55 6.44 7.16 TPC 0.83 0.79 0.75 TC 9.03 8.4 7.9 SHC 5.21 5.95 6.66 TPC 0.89 0.85 0.81 TC 8.4 7.
6 3.CONDENSING PRESSURE AND SUCTION PRESURE (ONE INDOOR UNIT WITH ONE OUTDOOR UNIT) Data is based on the condition of indoor humidity 50%. Air flow should be set at HI.
7 Model Unit Single Double MSM18NW 8,400 8,400 ✕ 2 0.71 0.71 0.85 1.70 0.815 1.63 6.64 7.16 ✕ 2 260 270 75 75 194 191 1 16 1 18 64 54 60 60 57 57 Cooling MS09NW 1 15 . 60 . 1 0.035 ✕ 2 0.34 ✕ 2 MUM18NW 208/230 . 60 . 1(3-wire) 1.0 172 25 ✕ 2 1lds 14oz ✕ 2 80 67 1,230 279 95 — 900 1,150 Btu/h — kW kW A kW A A psi .
8 4.OPERA TING RANGE ( 1 ) POWER SUPPL Y ( 2 ) OPERA TION 5.ADDITIONAL REFRIGERANT CHARGE (R-22(oz)) Indoor unit 1 15V 60Hz 1 [ 208/230V 60Hz 1 [ (3wires) Min.
9 6 OUTLINES AND DIMENSIONS MODEL : MUM18NW OUTDOOR UNIT REAR VIEW Unit center Refrigerant pipe(Flared) { 3/8 Refrigerant pipe(Flared) { 1/4 7/8 Wiring hole { 3-7/8 NOTE : The symbol { indicates diameter .
10 7 WIRING DIAGRAM OUTDOOR MODEL MUM18NW WIRING DIAGRAM F NR 1 15V 3 4 BLK BRN 2 1 BLU GRY N ❈ ❈ ❈ BLK ORN YL W X2 X1 2 2 6 6 4 4 YL W BLU L2 BLU RED TB3 TO INDOOR UNIT No.
11 8 REFRIGERANT SYSTEM DIAGRAM MS09NW ✕ 2/ MUM18NW Unit : inch Indoor unit Outdoor unit Indoor heat exchanger Indoor coil thermistor RT12 Room temperature thermistor RT1 1 Flared connection Flared .
12 9 TROUBLESHOOTING MUM18NW 9-1 Cautions on troubleshooting 9-1-1 Before troubleshooting, check the followings: 1) Check the power supply voltage. 2) Check the indoor/outdoor connecting wire for mis-wiring. 9-1-2 T ake care the followings during servicing.
13 Compressor and outdoor fan do not operate.(Only indoor fan operates.) Check of outdoor unit Press EMERGENCY ON/OFF button. 3-minute time delay works. T est mode operates for 30 minutes. Check the outdoor fan motor , compressor , relay , contactor , and wiring.
14 10 DISASSEMBL Y INSTRUCTIONS OUTDOOR UNIT MUM18NW 1. Removing of the cabinet (1)Remove the set screws of the valve cover to remove the valve cover as shown in Photo 2. (2)Remove the set screws of the side panel to remove the side panel and cabinet.
15 OPERA TING PROCEDURE PHOTOS Photo 5 Photo 6 3. Removing the outdoor fan motor . (1) Remove the cabinet. (Refer to 1) (2) Remove the propeller . (Refer to 2) (3) Disconnect the connector remove the clamp of out- door fan motor lead wire. (4) Remove the screws fixing the outdoor fan motor .
16 OPERA TING PROCEDURE PHOTOS Photo 7 Photo 8 4. Removing the compressor (1)Disconnect the cord connector . (See Phot 5) (2)Remove the set screws of the relay panel. (3)Remove the set nuts of the terminal cover . (4)Pull up the compressor . (5)Pull out the lead wires from the compressor terminal to remove overcurrent relay .
17 1 1 P ARTS LIST OUTDOOR UNIT P ARTS MUM18NW Refer to MS09EW for indoor unit. No. Parts No. Remarks Parts Name Symbol in Wiring Diagram Q , ty/unit MUM18NW 1 2 3 4 5 6 7 8 9 10 1 1 12 13 14 15 16 17.
18 12 OPTIONAL P ARTS 10ft 16ft 23ft 33ft 3/8 1/4 C 13/16 D 1-1/16 MAC - 440PI MAC - 441PI MAC - 442PI MAC - 443PI MS09NW 0 1 Pipe length Cross-section Part No. Model A-Gas B-Liquid Pipe size O.D Insulation Additional refrigerant charge R-22(Oz) 1. REFRIGERANT PIPES The air conditioner has flared connections its indoor and outdoor sides.
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New publication, effective Sep. 1997. Specifications subject to change without notice. The Slim Line. From Mitsubishi Electric. L I S T E D R C Copyright 1997 MITSUBISHI ELECTRIC ENGINEERING CO.
3400 Lawrenceville Suwanee Road ● Suwanee, Georgia 30024 Toll Free: 800-433-4822 ● Toll Free Fax: 800-889-9904 www.mrslim.com Specifications are subject to ch ange without notice.
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If you have not bought Mitsubishi Electronics MUM18NW yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Mitsubishi Electronics MUM18NW - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Mitsubishi Electronics MUM18NW you will learn all the available features of the product, as well as information on its operation. The information that you get Mitsubishi Electronics MUM18NW will certainly help you make a decision on the purchase.
If you already are a holder of Mitsubishi Electronics MUM18NW, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Mitsubishi Electronics MUM18NW.
However, one of the most important roles played by the user manual is to help in solving problems with Mitsubishi Electronics MUM18NW. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Mitsubishi Electronics MUM18NW along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
