Mitsubishi MSH-A18ND- Manuals

6 WIRING DIAGRAM 5 MU-A18ND R S 2 N L TB2 RED ORN BLU BRN WHT GRN/YLW C2 RED MF BLACK 4 WHITE ORANGE 321 BLK L N TB1 BRN BLU C1 RED C MC BLU 220-230V~ CONNECTING T O INDOOR UNIT POWER SUPPL Y 220-230V ~/N 60Hz F BLU DSAR 220-230V~ WHT 1.About the indoor side electric wiring refer to the indoor unit ...

7 MU-A30ND SYMBOL C1C2 DSAR F61 LEV MC MF SYMBOL NR61 RT62RT63 SR61SR62 TB1TB2 SYMBOL T61 X52X63 21S2 52C NAME DEICERP.C. BOARD 2 N 3 N L 12V WHT BLU RED BLU WHT WHT T61 YLW BLK WHT RED BLU TB2 5 CN730 YLW BLK WHT 1 52C 2 RED C2 ORN A1 A2 BLU 52C DSAR WHT C1 BLK S C R MC BLU NR61 3 1 TB1 GRN/YLW BRN...

8 REFRIGERANT SYSTEM DIAGRAM 6 MU-A24ND OUTDOOR UNIT Outdoor heat exchanger Flared connection Flared connection Stop valve Stop valve(with service port) Capillary tube [ 3.0 x [ 2.0 x 550 Refrigerant flow in cooling Compressor Refrigerant pipe [ 15.88 (with heat insulator) Refrigerant pipe [ 6.35 (w...

10 PERFORMANCE CURVES 7 The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions.Since operating conditions vary according to the areas where these units are installed. The following information has beenprovided to clarify the ope...

12 MU-A30ND 15 18 20 50 2560 30 32 70 35( : ) (%) 0.2 0.3 0.4 0.5 0.6 2.0 3.0 4.0 5.0 6.0 15 18 20 50 2560 30 32 70 35( : ) (%) 9.0 10.0 11.0 12.0 13.0 14.0 15.0 Outdoor low pressure Outdoor unit current(A) (kgf/ F [Gauge])(MPa[Gauge]) MU-A30ND Ambient temperature (˚C)/Ambient humidity (%) Ambient t...

15 Is there 220-230V AC to between L - N on the outdoor terminal block ? No Check the outdoor power supply and connection of wiring. Yes Check the deicer P.C. board. Refer to 8-5.Is there 5V DC? Compressor dose not operate. Yes Press the EMERGENCY OPERATION switch. 3-minute time delay works. Test ru...

16 Compressor and / or outdoor fan motor dose not stop. After 30 seconds, did compressor stop? No Yes Replace the deicer P.C. board. Yes 1 Turn OFF the power supply. 2 After 30 seconds, turn ON the power supply again. 3 Operate the unit in COOL mode by pressing the EMERGENCY OPERATION switch. 4 Oper...

17 How to check mis-wiring C 1. Turn OFF the power supply and disconnect only terminal block 3 of indoor/ outdoor connecting wire on indoor side. 2. Short-circuit terminal block N - 3 by lead wire. 3. Turn ON the power supply and press EMERGENCY OPERATION switch once. When EMERGENCY OPERATION is ope...

18 Check of outdoor thermistor Measure resistance between CN 662 3 and 4 . No Yes Replace the thermistor. Measure resistance between CN 662 1 and 2 . Connect CN662.Turn ON the power supply and press the EMERGENCY OPERATION switch. Does the resistances of thermistor have the characteristics on 8-5.? ...

19 Ok Do you hear "click" from the solenoid valve coil ? No Yes After 1minute or more has passed since the compressor started, operate the solenoid valve coil by heating or cooling the ambient temperature thermistor.(Refer to Solenoid valve control.) Turn ON the power supply.Operate the unit...

21 DISASSEMBLY INSTRUCTIONS 9 (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. The terminal ...

22 OPERATING PROCEDURE PHOTOS 2. Removing the electrical parts (1) Remove the service panel and the cabinet.(2) Remove the following parts. •Compressor capacitor (C1)•Outdoor fan capacitor (C2)•Terminal blocks (TB1,TB2) Photo 3 Compressor capacitor(C1) 3. Removing the outdoor fan motor (1) Remove th...

24 Photo 6 Suction pipe Discharge pipe Terminal cover OPERATING PROCEDURE PHOTOS 3. Removing the propeller and the outdoor fan motor (1) Remove the cabinet. (Refer to 1.)(2) Remove the propeller nut and the propeller. NOTE : Loose the propeller in the rotating direction for removal. When attaching t...

25 9-3. MU-A30ND OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1.Removing the cabinet (1) Remove the screw of the service panel.(2) Remove the screws of the top panel.(3) Remove the screw of the valve cover.(4) Remove the service panel.(5) Remove the top panel.(6) Remove the valve cover.(7) Remove the scr...

26 Photo 6 Suction pipe Discharge pipe Terminal cover OPERATING PROCEDURE PHOTOS 3. Removing the propeller and the outdoor fan motor (1) Remove the cabinet. (Refer to 1.)(2) Remove the propeller nut and the propeller. NOTE : Loose the propeller in the rotating direction for removal. When attaching t...

27 PARTS LIST (non-RoHS compliant) 10 MU-A18ND10-1. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS 1 18 13 14 12 17 4 5 6 10 9 8 2 3 7 19 16 20 15 MU-A18ND - S1 Symbol in Wiring Diagram Q'ty/unit Remarks Part No. Part Name No. MU-A18ND - S2 E02 817 233E02 A27 233E02 817 232E02 ...

28 MU-A24ND MU-A30ND10-2. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS 4 23 15 10 1 11 12 2 6 7 8 9 17 16 17 18 19 20 21 24 25 26 27 3 22 5 13 14 A B PARTS LIST (non-RoHS compliant) OB405E.qxp 09.10.14 9:16 AM Page 28

29 MU-A24ND - S1 MU-A24ND - S2 MU-A30ND - S1 Symbol in Wiring Diagram Q'ty/unit Remarks Part No. No. Part Name E02 819 297E02 890 630E02 947 630E02 950 301E02 951 301E02 214 501E07 070 508E02 889 290E02 890 290E02 819 232E02 819 009E02 819 521E02 527 506E02 784 900E02 951 900E02 889 661E02 947 662E0...

31 MU-A18ND 11-1. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS MU-A18ND - S1 Symbol in Wiring Diagram Q'ty/unit Remarks Part No. Part Name No. RoHS MU-A18ND - S2 E12 817 233E12 A27 233E12 817 232E12 817 521E12 141 501E12 496 515E12 075 506E12 949 900E12 817 290E12 A27 290E12 ...

HEAD OFFICE: TOKYO BLDG, 2-7-3, MARUNOUCHI, CHIYODAKU, TOKYO 100-8310, JAPAN C C Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD Distributed in Oct. 2009. No.OB405 REVISED EDITION-E 5Distributed in May 2006. No.OB405 REVISED EDITION-D 106Distributed in Nov. 2005. No.OB405 REVISED EDITION-C 10...