Pioneer MUH-GA35VB User's Manual
Contents
1. OUTDOOR UNIT ACCESSORIES MUH GA20VB E MUH GA20VB E MUH GA25VB E MUH GA25VB E MUH GA35VB E MUH GA35VB Back MUH GA20VB lt Outdoor unit MUH type gt back and side MUH GA25VB Drai MUH GA35VB rain socket 1 3 SPECIFICATION Outdoor model MUH GA20VB MUH GA25VB MUH GA35VB Single phase Single phase Single phase 230V 50Hz 230V 50Hz 230V 50Hz Function Cooling Heating Cooling Heating Cooling Heating Capacity 2 3 2 5 2 65 3 0 3 5 3 7 Dehumidification 0 9 1 1 1 7 Outdoor air flow Power outlet Running current Power input 655 785 Auxiliary heater Power factor 100 100 Starting current Compressor motor current 2 62 3 10 Fan motor current Coefficient of performance C O P 3 22 3 62 3 23 3 66 3 21 3 63 Model RNO92VHSHT RN104VHSHT RN135VHSHT Output 600 700 900 Winding C R 3 87 C R 3 40 C R 2 79 resistance at 20 C C S 6 14 C S 4 56 C S 3 36 Model RA6V21 AD RA6V33 KB RA6V33 KB Winding WHT BLK 366 WHT BLK 215 WHT BLK 215 resistance at 20 C BLK RED 274 BLK RED 307 BLK RED 307 Dimensions WxHxD 800x550x285 800x550x285 800x550x285 Weight Sound level Fan speed Fan speed regulator Refrigerant filling capacity R410A Outdoor unit power supply Capacity Electrical Compressor Fan motor Refrigerati2. NOTE Qr Total capacity kW INPUT Total power input W DB Dry bulb temperature WB Wet bulb temperature 21 9 SERVICE FUNCTIONS MUH GA20VB m MUH GA25VB m MUH GA35VB m 9 1 COMPULSORY DEFROSTING MODE FOR SERVICE By short circuit of the connector JPDS and JPSG on the outdoor deicer P C board defrosting mode can be accom plished regardless of the defrost interval restriction Refer to 10 5 Defrost thermistor RT61 must read below 3 C 9 2 CHANGE IN DEFROST SETTING lt JRF gt When the JRF wire of the deicer P C board is cut the defrost interval time will be changed lt JRG gt When the JRG wire of the deicer P C board is cut the defrost temperature will be changed Refer to 10 5 MODEL Jumper wire Change point MUH GA20VB JRF Defrost interval time changes from 40 minutes to 15 minutes MUH GA25VB MUH GA35VB Deforst start temperature changes from 3C to 0C 10 TROUBLESHOOTING MUH GA20VB MUH GA25VB E MUH GA35VB E 10 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 1 Before servicing the air conditioner be sure to turn off the main unit first with the remote controller and then after con
3. ee PERFORMANCE DATA COOL operation 230V MSC GA20VB 7 MUH GA20VB E CAPACITY 2 3 kW SHF 0 74 INPUT 715 W OUTDOOR DB C INDOOR INDOOR 35 40 43 DB C WB C SHC SHF INPUT SHC SHC SHF INPUT 21 18 2 25 1 26 0 56 701 2 07 1 16 0 56 744 1 99 1 11 0 56 758 21 20 2 37 1 04 0 44 729 2 21 0 97 0 44 765 2 13 0 94 0 44 787 22 18 2 25 1 35 0 60 701 2 07 1 24 0 60 744 1 99 1 19 0 60 758 22 20 2 37 1 14 0 48 729 2 21 1 06 0 48 765 2 13 1 02 0 48 787 22 22 2 51 0 90 0 36 758 2 35 0 84 0 36 801 2 27 0 82 0 36 815 23 18 2 25 1 44 0 64 701 2 07 1 32 0 64 744 1 99 1 27 0 64 758 23 20 2 37 1 23 0 52 729 2 21 1 15 0 52 765 2 13 1 11 0 52 787 23 22 2 51 1 00 0 40 758 2 35 0 94 0 40 801 2 27 0 91 0 40 815 24 18 2 25 1 53 0 68 701 2 07 1 41 0 68 744 1 99 1 35 0 68 758 24 20 2 37 1 33 0 56 729 2 21 1 24 0 56 765 2 13 1 19 0 56 787 24 22 2 51 1 10 0 44 758 2 35 1 03 0 44 801 2 27 1 00 0 44 815 24 24 2 65 0 85 0 32 787 2 48 0 79 0 32 822 2 42 0 77 0 32 840 25 18 2 25 1 62 0 72 701 2 07 1 49 0 72 744 1 99 1 43 0 72 758 25 20 2 37 1 42 0 60 729 2 21 1 32
4. 02 900 COMPRESSOR RNO92VHSHT E02 900 COMPRESSOR RN104VHSHT E02 900 COMPRESSOR RN135VHSHT E02 661 STOP VALVE GAS 9 52 E02 662 STOP VALVE LIQUID 6 35 E02 233 BACK PANEL E02 233 BACK PANEL E02 245 SERVICE PANEL E02 704 DRAIN SOCKET E02 374 TERMINAL BLOCK 374 TERMINAL BLOCK 961 4 WAY VALVE 961 4 WAY VALVE 353 COMPRESSOR CAPACITOR 20uF 440V AC 353 COMPRESSOR CAPACITOR 25uF 440V AC 353 COMPRESSOR CAPACITOR 30uF 440V AC 383 SURGE ABSORBER 451 DEICER P C BOARD 451 DEICER P C BOARD 310 DEFROST THERMISTOR 523 CONDENSER NET 523 CONDENSER NET 297 TOP PANEL 293 SEPARATOR 515 MOTOR SUPPORT 490 R V COIL 490 R V COIL 382 FUSE 250V 2A 385 VARISTOR CHECK VALVE CAPILLARY TUBE 03 0 01 4 700 CAPILLARY TUBE 03 0 01 4 500 CAPILLARY TUBE 03 0 01 4 1000 CAPILLARY TUBE 03 0 01 4 600 CAPILLARY TUBE 33 03 0 01 4 300 34 35 a MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE MITSUBISHI DENKI BLDG 2 2 3 MARUNOUCHI CHIYODA KU TOKYO100 8310 JAPAN Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO LTD New publication effective Feb 2005 Distributed in Feb 2005 No OB387 6 Specifications s
5. 020 10 0 10 20 30 40 Temperature 28 11 DISASSEMBLY INSTRUCTIONS lt Terminal with locking mechanism Detaching points gt The terminal which has the locking mechanism can be detached as shown below There are two types Refer to 1 and 2 of the terminal with locking mechanism The terminal without locking mechanism can be detached by pulling it out Check the shape of the terminal before detaching 1 Slide the sleeve and check if there is a locking lever or not Slide the sleeve GPull the terminal while 2 The terminal with this connector has the locking mechanism Hold the sleeve and pull out the terminal pushing the locking slowly lever Connector MUH GA20VB MUH GA25VB E MUH GA35VB E OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1 Removing the cabinet 1 Remove the screws of the top panel 2 Remove the screw of the service panel 3 Remove the screws of the cabinet 4 Remove the screws of the front panel and motor support 5 Remove the service panel and remove the screw from the insides 6 Remove the top panel 7 Remove the cabinet a ee ea Photo 3 Screws of the top panel Screw of the Service panel Screw of the cabinet Photo 1 Screw of the front panel and motor support Screws of the cabinet Photo 2 9 e L ru Screws of the
6. Screws of the cabinet This photo shows MUH GA20VB 29 OPERATING PROCEDURE PHOTOS 2 Removing the deicer P C board 1 Remove the service panel and the cabinet 2 Disconnect all the connectors and the terminals on the deicer P C board 3 Remove the deicer P C board Photo 4 Screw of the Deicer board Relay panel relay panel Terminal Surge absorber 3 Removing the propeller and the outdoor fan motor 1 Remove the cabinet Refer to 1 2 Remove the propeller nut 3 Remove the propeller NOTE Loose the propeller in the rotating direction for removal When attaching the propeller align the mark on the propeller and the motor shaft cut section Set the propeller in position by using the cut on the shaft and the mark on the propeller 4 Disconnect the outdoor fan motor connector 5 Remove screws fixing the fan motor 6 Remove the outdoor fan motor Photo 5 Terminal cover Screws of the relay Propeller Ne panel outdoor fan motor Propeller R V coil nut Sound proof felt This photo shows MUH GA20VB 30 OPERATING PROCEDURE PHOTOS 4 Removing the compressor Photo 6 1 Remove the cabinet Refer to 1 2 Remove the relay panel Discharge pipe 3 Remove the soundproof felt 4 Remove the terminal cover on the compressor 5 Disconnect lead wires from the glass terminal of the com pres
7. t i I o t I 1 i 20 i a 20 APPROXIMATE T T i TERESHOLD OF T T HEARING FOR La J HEARING FOR TE N T CONTINUOUS T i c NoD CONTINUOUS m di T i T He NOISE i i i NOISE i E i F F 10 F T 10 T T 1 F 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz BAND CENTER FREQUENCIES Hz OUTDOORUNIT im MICROPHONE OUTLINES AND DIMENSIONS MUH GA20VB MUH GA25VB m MUH GA35VB E Unit mm OUTDOOR UNIT REQUIRED SPACE Basically open 100mm or more without any obstruction in front and on both sides of the unit 400 Drain hole 42 344 5 285 Air in MUH GA25 GA35VB Bolt pitch for installation 304 325 Open two sides of left right or rear side 2 holes 10 21 550 Air out Service panel 22 3 23 gt Handle 7 Liquid refrigerant pipe joint g Refrigerant pipe flared 6 35 2 ER e lt o d Gas refrigerant pipe joint 99 5 Refrigerant pipe flared 9 52 69 170 5 iF 800 6 WIRING DIAGRAM MUH GA20VB m MUH GA25VB m MUH GA35VB m
8. Pay particular attention to the following points though the basic installation procedure is same as that for R22 conditioners As R410A has working pressure approximate 1 6 times as high as that of R22 some special tools and piping parts materials are required Refer to the table below Take sufficient care not to allow water and other contaminations to enter the R410A refrigerant during storage and installation since it is more susceptible to contaminations than R22 9 For refrigerant piping use clean pressure proof parts materials specifically designed for R410A Refer to 2 Refrigerant piping Composition change may occur in R410A since it is a mixed refrigerant When charging charge liquid refrigerant to prevent composition change Refrigerant R410A Composition Ratio HFC 32 HFC 125 5096 5096 Refrigerant handling Pseudo azeotropic refrigerant Chlorine Not included Safety group ASHRAE 1 1 Molecular weight 72 6 Boiling point 51 4 Steam pressure 25 C Mpa 1 557 Saturated steam density 25 C J Kg m 6 Combustibility Non combustible ODP 1 x1 Ozone Destruction Parameter based on CFC 11 X2 Global Warmth Parameter based on CO a c el 0 New Specification Current Specification The incompatible refrigeration oil easily separates from Since refrigerant and refrigerating oil are compatible each refrigerant and is in the upper layer inside the suction muffler
9. R410A tools Can R22 tools be used Description R410A has high pressures beyond the measurement range of existing gauges Port diameters have been changed to prevent any other refrigerant from being charged into the unit Charge hose Hose material and cap size have been changed to improve the pressure resistance Gauge manifold Dedicated for HFC refrigerant 6 35 mm and 9 52 mm Gas leak detector Torque wrench Flare tool Clamp bar hole has been enlarged to reinforce the spring strength in the tool Flare gauge Provided for flaring work to be used with R22 flare tool Vacuum pump N Provided to prevent the back flow of oil This adapter enables you to use adapter ew vacuum pumps Electronic scale for N It is difficult to measure R410A with a charging cylinder because the ew 3 ae refrigerant charging refrigerant bubbles due to high pressure and high speed vaporization No Not Substitutable for RA10A Yes Substitutable for R410A 2 Refrigerant piping O Specifications Use the refrigerant pipes that meet the following specifications Outside diameter wall Insulation material For liquid Heat resisting foam plastic Specie graviy 0045 Thickness 8 mn Use a copper pipe or a copper alloy seamless pipe with a thickness of 0 8 mm Never use any pipe with a thickness less than 0 8mm as the pressure resistance is insufficient eee Flaring work and flare nut Flaring work for R410A pipe diff
10. OUTDOOR UNIT MODELS WIRING DIAGRAM 61 re RED CN 61 CN721 S E 5585 gt BK 16 ONT POWER SUPPLY IN 230V 50Hz NAME SYMBOL NAME SYMBOL COMPRESSOR CAPACITOR UE OUTDOOR FAN MOTOR T61 TRANS FORMER OUTDOOR FAN CAPACITOR INNER FUSE TB1 TB2 TERMINAL BLOCK SURGE ABSORBER NR61 VARISTOR 2154 COIL FUSE 2A RT61 DEFROST THERMISTOR 52C COMPRESSOR CONTACTOR COMPRESSOR INNER PROTECTOR SR61 SR62 SOLID STATE RELAY NOTE 1 About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing 2 Use copper conductors only For field wiring 3 Symbols below indicate Terminal block Connector 7 MUH GA20VB MUH GA25VB MUH GA35VB E REFRIGERANT SYSTEM DIAGRAM Unit mm OUTDOOR UNIT Refrigerant pipe 9 52 with heat insulator 4 way valve Stop valve Outdoor with service Flared connection Port Defrost I 4 thermistor RT61 Compressor Capillary tube 3 0 1 4 700 MUH GA20VB 3 0x 1 4x1000 MUH GA25VB Flared connection 3 0 1 4 500 MUH GA35VB Check valve R V coil 100 heating ON cooling OFF
11. 0 24 1199 3 78 0 91 0 24 1254 3 68 0 88 0 24 1281 25 18 3 43 2 20 0 64 1068 3 15 2 02 0 64 1134 3 03 1 94 0 64 1155 25 20 3 61 1 87 0 52 1112 3 36 1 75 0 52 1166 3 24 1 68 0 52 1199 25 22 3 82 1 53 0 40 1155 3 57 1 43 0 40 1221 3 45 1 38 0 40 1243 25 24 4 03 1 13 0 28 1199 3 78 1 06 0 28 1254 3 68 1 03 0 28 1281 26 18 3 43 2 33 0 68 1068 3 15 2 14 0 68 1134 3 03 2 06 0 68 1155 26 20 3 61 2 02 0 56 1112 3 36 1 88 0 56 1166 3 24 1 81 0 56 1199 26 22 3 82 1 68 0 44 1155 3 57 1 57 0 44 1221 3 45 1 52 0 44 1243 26 24 4 03 1 29 0 32 1199 3 78 1 21 0 32 1254 3 68 1 18 0 32 1281 26 26 4 24 0 85 0 20 1243 3 99 0 80 0 20 1297 3 87 0 77 0 20 1324 27 18 3 43 2 47 0 72 1068 3 15 2 27 0 72 1134 3 03 2 18 0 72 1155 27 20 3 61 2 16 0 60 1112 3 36 2 02 0 60 1166 3 24 1 94 0 60 1199 27 22 3 82 1 83 0 48 1155 3 57 1 71 0 48 1221 3 45 1 65 0 48 1243 27 24 4 03 1 45 0 36 1199 3 78 1 36 0 36 1254 3 68 1 32 0 36 1281 27 26 4 24 1 02 0 24 1243 3 99 0 96 0 24 1297 3 87 0 93 0 24 1324 28 18 3 43 2 61 0 76 1068 3 15 2 39 0 76 1134 3 03 2 30 0 76 1155 28 20 3 61 2 31 0 64 1112 3 36 2 15 0 64 1166 3 24 2 07
12. 0 36 787 3 34 1 20 0 36 812 3 23 1 16 0 36 853 26 26 3 66 0 88 0 24 787 3 55 0 85 0 24 828 3 50 0 84 0 24 853 3 39 0 81 0 24 877 27 18 3 11 2 37 0 76 656 2 98 2 27 0 76 689 2 86 2 18 0 76 722 2 76 2 09 0 76 754 27 20 3 25 2 08 0 64 689 3 11 1 99 0 64 730 3 02 1 93 0 64 746 2 92 1 87 0 64 779 27 22 3 38 1 76 0 52 713 3 26 1 69 0 52 759 3 18 1 65 0 52 779 3 05 1 58 0 52 812 27 24 3 55 1 42 0 40 746 3 42 1 37 0 40 787 3 34 1 34 0 40 812 3 23 1 29 0 40 853 27 26 13 66 1 02 0 28 787 3 55 0 99 0 28 828 3 50 0 98 0 28 853 13 39 0 95 0 28 877 28 18 3 11 2 49 0 80 656 2 98 2 39 0 80 689 2 86 2 29 0 80 722 2 76 2 20 0 80 754 28 20 3 25 2 21 0 68 689 3 11 2 12 0 68 730 3 02 2 05 0 68 746 2 92 1 98 0 68 779 28 22 3 38 1 89 0 56 713 3 26 1 83 0 56 759 3 18 1 78 0 56 779 3 05 1 71 0 56 812 28 24 3 55 1 56 0 44 746 3 42 1 50 0 44 787 3 34 1 47 0 44 812 3 23 1 42 0 44 853 28 26 3 66 1 17 0 32 787 3 55 1 14 0 32 828 3 50 1 12 0 32 853 13 39 1 09 0 32 877 29 18 3 11 2 62 0 84 656 2 98 2 50 0 84 689 2 86 2 40 0 84 722 2 76 2 32 0 84 754 29 20 3 25 2 34 0 72 689 3 11 2 24 0 72 730 3 02 2 18 0 72
13. 0 60 1079 30 24 4 69 2 25 0 48 992 4 52 2 17 0 48 1046 4 41 2 12 0 48 1079 4 27 2 05 0 48 1134 30 26 4 83 1 74 0 36 1046 4 69 1 69 0 36 1101 4 62 1 66 0 36 1134 4 48 1 61 0 36 1166 31 18 4 11 3 62 0 88 872 3 94 3 47 0 88 916 3 78 3 33 0 88 959 3 64 3 20 0 88 1003 31 20 4 29 3 26 0 76 916 4 11 3 13 0 76 970 3 99 3 03 0 76 992 3 85 2 93 0 76 1036 31 22 4 46 2 86 0 64 948 4 31 2 76 0 64 1008 4 20 2 69 0 64 1036 4 03 2 58 0 64 1079 31 24 4 69 2 44 0 52 992 4 52 2 35 0 52 1046 4 41 2 29 0 52 1079 4 27 2 22 0 52 1134 31 26 4 83 1 93 0 40 1046 4 69 1 88 0 40 1101 4 62 1 85 0 40 1134 4 48 1 79 0 40 1166 32 18 4 11 3 78 0 92 872 3 94 3 62 0 92 916 3 78 3 48 0 92 959 3 64 3 35 0 92 1003 32 20 4 29 3 43 0 80 916 4 11 3 29 0 80 970 3 99 3 19 0 80 992 3 85 3 08 0 80 1036 32 22 4 46 3 03 0 68 948 4 31 2 93 0 68 1008 4 20 2 86 0 68 1036 4 03 2 74 0 68 1079 32 24 4 69 2 63 0 56 992 4 52 2 53 0 56 1046 4 41 2 47 0 56 1079 4 27 2 39 0 56 1134 32 26 4 83 2 13 0 44 1046 4 69 2 06 0 44 1101 4 62 2 03 0 44 1134 4 48 1 97 0 44 1166 NOTE Total capacity KW SHF Sensible heat factor DB Dr
14. 0 60 765 2 13 1 28 0 60 787 25 22 2 51 1 20 0 48 758 2 35 1 13 0 48 801 2 27 1 09 0 48 815 25 24 2 65 0 95 0 36 787 2 48 0 89 0 36 822 2 42 0 87 0 36 840 26 18 2 25 1 711 0 76 701 2 07 1 57 0 76 744 1 99 1 51 0 76 758 26 20 2 37 1 52 0 64 729 2 21 1 41 0 64 765 2 13 1 36 0 64 787 26 22 2 51 1 30 0 52 758 2 35 1 22 0 52 801 2 27 1 18 0 52 815 26 24 2 65 1 06 0 40 787 2 48 0 99 0 40 822 2 42 0 97 0 40 840 26 26 2 78 0 78 0 28 815 2 62 0 73 0 28 851 2 54 0 71 0 28 869 27 18 2 25 1 80 0 80 701 2 07 1 66 0 80 744 1 99 1 59 0 80 758 27 20 2 37 1 61 0 68 729 2 21 1 50 0 68 765 2 13 1 45 0 68 787 27 22 2 51 1 40 0 56 758 2 35 1 31 0 56 801 2 27 1 27 0 56 815 27 24 2 65 1 16 0 44 787 2 48 1 09 0 44 822 2 42 1 06 0 44 840 27 26 2 78 0 89 0 32 815 2 62 0 84 0 32 851 2 54 0 81 0 32 869 28 18 2 25 1 89 0 84 701 2 07 1 74 0 84 744 1 99 1 67 0 84 758 28 20 2 37 1 711 0 72 729 2 21 1 59 0 72 765 2 13 1 53 0 72 787 28 22 2 51 1 50 0 60 758 2 35 1 41 0 60 801 2 27 1 36 0 60 815 28 24 2 65 1 27 0 48 787 2 48 1 19 0 48 822 2 42 1 16 0 48 840 28 26 2 78 1 00 0 36 815 2 62 0 94 0 36 851 2 54
15. 0 64 1003 25 20 4 29 2 23 0 52 916 4 11 2 14 0 52 970 3 99 2 07 0 52 992 3 85 2 00 0 52 1036 25 22 4 46 1 79 0 40 948 4 31 1 72 0 40 1008 4 20 1 68 0 40 1036 4 03 1 61 0 40 1079 25 24 4 69 1 31 0 28 992 4 52 1 26 0 28 1046 4 41 1 23 0 28 1079 4 27 1 20 0 28 1134 26 18 4 11 2 80 0 68 872 3 94 2 68 0 68 916 3 78 2 57 0 68 959 3 64 2 48 0 68 1003 26 20 4 29 2 40 0 56 916 4 11 2 30 0 56 970 3 99 2 23 0 56 992 3 85 2 16 0 56 1036 26 22 4 46 1 96 0 44 948 4 31 1 89 0 44 1008 4 20 1 85 0 44 1036 4 03 1 77 0 44 1079 26 24 4 69 1 50 0 32 992 4 52 1 44 0 32 1046 4 41 1 41 0 32 1079 4 27 1 37 0 32 1134 26 26 4 83 0 97 0 20 1046 4 69 0 94 0 20 1101 4 62 0 92 0 20 1134 4 48 0 90 0 20 1166 27 18 4 11 2 96 0 72 872 3 94 2 84 0 72 916 3 78 2 72 0 72 959 3 64 2 62 0 72 1003 27 20 4 29 2 57 0 60 916 4 11 2 47 0 60 970 3 99 2 39 0 60 992 3 85 2 31 0 60 1036 27 22 4 46 2 14 0 48 948 4 31 2 07 0 48 1008 4 20 2 02 0 48 1036 4 03 1 93 0 48 1079 27 24 4 69 1 69 0 36 992 4 52 1 63 0 36 1046 4 41 1 59 0 36 1079 4 27 1 54 0 36 1134 27 26 4 83 1 16 0 24 1046 4 69 1 13 0 24 1101 4 62 1 11 0 24 1134 4 48 1 0
16. 601 2 48 2 09 0 84 629 2 39 2 01 0 84 658 28 20 2 82 2 03 0 72 601 2 70 1 95 0 72 636 2 62 1 89 0 72 651 2 53 1 82 0 72 679 28 22 2 93 1 76 0 60 622 2 83 1 70 0 60 661 2 76 1 66 0 60 679 2 65 1 59 0 60 708 28 24 3 08 1 48 0 48 651 2 97 1 42 0 48 686 2 90 1 39 0 48 708 2 81 1 35 0 48 744 28 26 3 17 1 14 0 36 686 3 08 1 11 0 36 722 3 04 1 09 0 36 744 2 94 1 06 0 36 765 29 18 2 70 2 38 0 88 572 2 59 2 28 0 88 601 2 48 2 19 0 88 629 2 39 2 10 0 88 658 29 20 2 82 2 14 0 76 601 2 70 2 05 0 76 636 2 62 1 99 0 76 651 2 53 1 92 0 76 679 29 22 2 93 1 88 0 64 622 2 83 1 81 0 64 661 2 76 1 77 0 64 679 2 65 1 69 0 64 708 29 24 3 08 1 60 0 52 651 2 97 1 54 0 52 686 2 90 1 51 0 52 708 2 81 1 46 0 52 744 29 26 3 17 1 27 0 40 686 3 08 1 23 0 40 722 3 04 1 21 0 40 744 2 94 1 18 0 40 765 30 18 2 70 2 49 0 92 572 2 59 2 38 0 92 601 2 48 2 29 0 92 629 2 39 2 20 0 92 658 30 20 2 82 2 25 0 80 601 2 70 2 16 0 80 636 2 62 2 10 0 80 651 2 53 2 02 0 80 679 30 22 2 93 1 99 0 68 622 2 83 1 92 0 68 661 2 76 1 88 0 68 679 2 65 1 80 0 68 708 30 24 3 08 1 73 0 56 651 2 97 1 66 0 56 686 2 90 1 62 0 56 708 2 81
17. Capillary tube 3 0 1 4 500 MUH GA20VB Refrigerant pipe 96 35 3 0 1 4 600 MUH GA25VB with heat insulator 3 0 1 4 300 MUH GA35VB Refrigerant flow in cooling Stop valve 5 Refrigerant flow in heating MAX REFRIGERANT PIPING LENGTH t bipi E d M Piping size O D mm Length of connecting pipe m Max length m A Gas Liquid Indoor unit Outdoor unit MUH GA20VB MUH GA25VB Gas 0 43 Gas 0 Liquid 0 5 Liquid 0 MUH GASS5VB MAX HEIGHT DIFFERENCE Indoor unit m Height difference should be within Refrigerant Piping 10m regardless of which unit d Max lenath indoor or outdoor position is high if Max Height A g difference 10m S Refrigerant piping length one way 10m 15m 20m Model Outdoor unit precharged MUH GA20VB 650 MUH GA25VB MUH GAS5VB Calculation Xg 20g m x A 7 m 8 PERFORMANCE CURVES MUH GA20VB m MUH GA25VB m MUH GAS35VB 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 been pro vided to clarify the operating characteristics of the air conditioner under th
18. INPUT SHC SHF INPUT SHC SHF INPUT 21 18 411 1 97 0 48 872 3 94 1 89 0 48 916 3 78 1 81 0 48 959 3 64 1 75 0 48 1003 21 20 4 29 1 54 0 36 916 4 11 1 48 0 36 970 3 99 1 44 0 36 992 3 85 1 39 0 36 1036 22 18 411 214 0 52 872 3 94 2 05 0 52 916 3 78 1 97 0 52 959 3 64 1 89 0 52 1003 22 20 4 29 1 72 0 40 916 4 11 1 65 0 40 970 3 99 1 60 0 40 992 3 85 1 54 0 40 1036 22 22 4 46 1 25 0 28 948 4 31 1 21 0 28 1008 4 20 1 18 0 28 1036 4 03 1 13 0 28 1079 23 18 4 11 2 30 0 56 872 3 94 2 21 0 56 916 3 78 2 12 0 56 959 3 64 2 04 0 56 1003 23 20 4 29 1 89 0 44 916 4 11 1 81 0 44 970 3 99 1 76 0 44 992 3 85 1 69 0 44 1036 23 22 4 46 1 43 0 32 948 4 31 1 38 0 32 1008 4 20 1 34 0 32 1036 4 03 1 29 0 32 1079 24 18 4 11 2 47 0 60 872 3 94 2 36 0 60 916 3 78 2 27 0 60 959 3 64 2 18 0 60 1003 24 20 4 29 2 06 0 48 916 4 11 1 97 0 48 970 3 99 1 92 0 48 992 3 85 1 85 0 48 1036 24 22 4 46 1 61 0 36 948 4 31 1 55 0 36 1008 4 20 1 51 0 36 1036 4 03 1 45 0 36 1079 24 24 4 69 1 13 0 24 992 4 52 1 08 0 24 1046 4 41 1 06 0 24 1079 4 27 1 02 0 24 1134 25 18 4 11 2 63 0 64 872 3 94 2 52 0 64 916 3 78 2 42 0 64 959 3 64 2 33
19. 0 64 1199 28 22 3 82 1 98 0 52 1155 3 57 1 86 0 52 1221 3 45 1 79 0 52 1243 28 24 4 03 1 61 0 40 1199 3 78 1 51 0 40 1254 3 68 1 47 0 40 1281 28 26 4 24 1 19 0 28 1243 3 99 1 12 0 28 1297 3 87 1 08 0 28 1324 29 18 3 43 2 74 0 80 1068 3 15 2 52 0 80 1134 3 03 2 42 0 80 1155 29 20 3 61 2 45 0 68 1112 3 36 2 28 0 68 1166 3 24 2 20 0 68 1199 29 22 3 82 2 14 0 56 1155 3 57 2 00 0 56 1221 3 45 1 93 0 56 1243 29 24 4 03 1 77 0 44 1199 3 78 1 66 0 44 1254 3 68 1 62 0 44 1281 29 26 4 24 1 36 0 32 1243 3 99 1 28 0 32 1297 3 87 1 24 0 32 1324 30 18 3 43 2 88 0 84 1068 3 15 2 65 0 84 1134 3 03 2 54 0 84 1155 30 20 3 61 2 60 0 72 1112 3 36 2 42 0 72 1166 3 24 2 33 0 72 1199 30 22 3 82 2 29 0 60 1155 3 57 2 14 0 60 1221 3 45 2 07 0 60 1243 30 24 4 03 1 93 0 48 1199 3 78 1 81 0 48 1254 3 68 1 76 0 48 1281 30 26 4 24 1 52 0 36 1243 3 99 1 44 0 36 1297 3 87 1 39 0 36 1324 31 18 3 43 3 02 0 88 1068 3 15 2 77 0 88 1134 3 03 2 66 0 88 1155 31 20 3 61 2 74 0 76 1112 3 36 2 55 0 76 1166 3 24 2 46 0 76 1199 31 22 3 82 2 44 0 64 1155 3 57 2 28 0 64 1221 3 45 2 21 0 64 1243 31 24 4 03 2 09
20. 1 49 0 52 943 2 78 1 45 0 52 964 30 26 13 21 1 28 0 40 935 3 02 1 21 0 40 976 2 93 1 17 0 40 996 31 18 2 60 2 39 0 92 804 2 39 2 19 0 92 853 2 29 2 11 0 92 869 31 20 2 73 2 18 0 80 836 2 54 2 04 0 80 877 2 45 1 96 0 80 902 31 22 2 89 1 96 0 68 869 2 70 1 84 0 68 918 2 61 1 77 0 68 935 31 24 3 05 1 71 0 56 902 2 86 1 60 0 56 943 2 78 1 56 0 56 964 31 26 13 21 1 41 0 44 935 3 02 1 33 0 44 976 2 93 1 29 0 44 996 32 18 2 60 2 49 0 96 804 2 39 2 29 0 96 853 2 29 2 20 0 96 869 32 20 2 73 2 29 0 84 836 2 54 2 14 0 84 877 2 45 2 06 0 84 902 32 22 2 89 2 08 0 72 869 2 70 1 95 0 72 918 2 61 1 88 0 72 935 32 24 3 05 1 83 0 60 902 2 86 1 72 0 60 943 2 78 1 67 0 60 964 32 26 3 21 1 54 0 48 935 3 02 1 45 0 48 976 2 93 1 41 0 48 996 NOTE capacity KW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity KW INPUT Total power input W WB Wet bulb temperature 18 PERFORMANCE DATA COOL operation 230V MSC GA35VB E MUH GA35VB CAPACITY 3 5 KW SHF 0 66 INPUT 1090 W m OUTDOOR DB C INDOOR INDOOR 21 25 27 30 DB C WB C Q SHC SHF INPUT SHC
21. 2 73 1 75 0 64 836 2 54 1 63 0 64 877 2 45 1 57 0 64 902 27 22 2 89 1 50 0 52 869 2 70 1 41 0 52 918 2 61 1 36 0 52 935 27 24 3 05 1 22 0 40 902 2 86 1 14 0 40 943 2 78 1 11 0 40 964 27 26 3 21 0 90 0 28 935 3 02 0 85 0 28 976 2 93 0 82 0 28 996 28 18 2 60 2 08 0 80 804 2 39 1 91 0 80 853 2 29 1 83 0 80 869 28 20 2 73 1 86 0 68 836 2 54 1 73 0 68 877 2 45 1 67 0 68 902 28 22 2 89 1 62 0 56 869 2 70 1 51 0 56 918 2 61 1 46 0 56 935 28 24 3 05 1 34 0 44 902 2 86 1 26 0 44 943 2 78 1 22 0 44 964 28 26 13 21 1 03 0 32 935 3 02 0 97 0 32 976 2 93 0 94 0 32 996 29 18 2 60 2 18 0 84 804 2 39 2 00 0 84 853 2 29 1 93 0 84 869 29 20 2 73 11 97 0 72 836 2 54 1 83 0 72 877 2 45 1 76 0 72 902 29 22 2 89 1 73 0 60 869 2 70 1 62 0 60 918 2 61 1 57 0 60 935 29 24 3 05 1 46 0 48 902 2 86 1 37 0 48 943 2 78 1 34 0 48 964 29 26 13 21 1 15 0 36 935 3 02 1 09 0 36 976 2 93 1 05 0 36 996 30 18 2 60 2 29 0 88 804 2 39 2 10 0 88 853 2 29 2 02 0 88 869 30 20 2 73 2 07 0 76 836 2 54 1 93 0 76 877 2 45 1 86 0 76 902 30 22 2 89 1 85 0 64 869 2 70 1 73 0 64 918 2 61 1 67 0 64 935 30 24 3 05 1 58 0 52 902 2 86
22. 3 39 1 49 0 44 877 32 18 3 11 2 99 0 96 656 2 98 2 86 0 96 689 2 86 2 75 0 96 722 2 76 2 65 0 96 754 32 20 3 25 2 73 0 84 689 3 11 2 62 0 84 730 3 02 2 54 0 84 746 2 92 2 45 0 84 779 32 22 3 38 2 43 0 72 713 3 26 2 35 0 72 759 3 18 2 29 0 72 779 3 05 2 19 0 72 812 32 24 3 55 2 13 0 60 746 3 42 2 05 0 60 787 3 34 2 00 0 60 812 3 23 1 94 0 60 853 32 26 13 66 1 76 0 48 787 3 55 1 70 0 48 828 3 50 1 68 0 48 853 3 39 1 63 0 48 877 NOTE Q Total capacity kW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity kW INPUT Total power input W Wet bulb temperature 17 ee PERFORMANCE DATA COOL operation 230V MSC GA25VB m MUH GA25VB CAPACITY 2 65 kW SHF 0 70 INPUT 820 W OUTDOOR DB C m INDOOR INDOOR 35 40 43 DB C WB C SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 21 18 2 60 1 35 0 52 804 2 39 1 24 0 52 853 2 29 1 19 0 52 869 21 20 2 73 1 09 0 40 836 2 54 1 02 0 40 877 2 45 0 98 0 40 902 22 18 2 60 1 45 0 56 804 2 39 1 34 0 56 853 2 29 1 28 0 56 869 22 20 2 73 1 20 0 44 836 2 54 1 12 0 44 877 2 45 1 08 0 44 902 22 22 2 89 0 92 0 32 869 2 70 0 86 0 32 9
23. 3 41 4 18Q 2 99 3 670 2 46 3 010 Open or short circuit 155 5 C OPEN 3 x 2 f 90 10 CLOSE C S 5 41 6 630 4 02 4 920 2 963 630 Measure the resistance between the terminals with a tester Outdoor fan Coil wiring temperature 10 40 C motor Color of Normal lead wire Abnormal INNER FUSE MUH GA20VB MUH GA25 GA35VB 145 2 WHT BLK 323 396 Q 189 233 Q CUT OFF Open or short circuit BLK RED 241 296 Q 270 332 Q SP 10 4 Troubleshooting flow B INNER PROTECTOR Compressor and or outdoor fan motor doesn t operate Check of outdoor unit Is the switch SW2 O on the No Change the switch SW 2 indoor electronic control on the indoor electronic control P C board set to MUH type P C board to MUH type Yes Operate the unit in COOL or HEAT mode by pressing the EMERGENCY OPERATION switch 3 minute time delay works Test run operation operates for 30 minutes Compressor Rectify the indoor and doesn t operate outdoor connecting wire TAB20 on the deicer P C board w Yes Yes Is there 230V AC between 3 on the No Replace the compressor contactor 52C and IN deicer P C Rectify the connecting wire on the outdoor terminal block TB1 board oe Yes Check the compressor and compressor capacitor and rectify the co
24. refrigeration oil goes back to the compressor through the Raising position of the oil back hole enables to back the lower position oil back hole refrigeration oil of the upper layer to flow back to the compressor Suction muffler Suction muffler o o o D a E Compressor Oil back hole Compressor Refrigeration oil Refrigerant Refrigeration oil Refrigerant NOTE The unit of pressure has been changed to MPa on the international system of units SI unit system The conversion factor is 1 Gauge 10 2 kgf cm Gauge Conversion chart of refrigerant temperature and pressure MPa Gauge international system of units SI unit system 65 REESE ERE EA The conversion factor is 1 MPa Gauge 10 2 kgf cm Gauge 2 7 aai I AERA ER DR TER 0 0 e esp esp a SES se pe 0 30 20 10 0 10 20 30 40 50 60 C 4 0 m R410A o 25 Se E a 1A 20 2 E 15 NOTE The unit of pressure has been changed to MPa on the g 1 Tools dedicated for the air conditioner with R410A refrigerant The following tools are required for R410A refrigerant Some R22 tools can be substituted for R410A tools The diameter of the service port on the stop valve in outdoor unit has been changed to prevent any other refrigerant being charged into the unit Cap size has been changed from 7 16 UNF with 20 threads to 1 2 UNF with 20 threads
25. 0 52 1199 3 78 1 97 0 52 1254 3 68 1 91 0 52 1281 31 26 4 24 1 69 0 40 1243 3 99 1 60 0 40 1297 3 87 1 55 0 40 1324 32 18 3 43 3 16 0 92 1068 3 15 2 90 0 92 1134 3 03 2 79 0 92 1155 32 20 3 61 2 88 0 80 1112 3 36 2 69 0 80 1166 3 24 2 59 0 80 1199 32 22 3 82 2 59 0 68 1155 3 57 2 43 0 68 1221 3 45 2 34 0 68 1243 32 24 4 03 2 25 0 56 1199 3 78 2 12 0 56 1254 3 68 2 06 0 56 1281 32 26 4 24 1 86 0 44 1243 3 99 1 76 0 44 1297 3 87 1 70 0 44 1324 NOTE Total capacity kW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity KW INPUT Total power input W WB Wet bulb temperature 20 pT PERFORMANCE DATA HEAT operation 230V MSC GA20VB MUH GA20VB CAPACITY 2 5 KW INPUT 690 W OUTDOOR WB C 0 5 10 INPUT Q 607 656 635 683 669 718 MSC GA25VB MUH GA25VB E CAPACITY 3 0 KW INPUT 820 W OUTDOOR WB C 0 5 10 INPUT INPUT 722 779 754 812 795 853 MSC GA35VB MUH GA35VB E CAPACITY 3 7 kW INPUT 1020 W OUTDOOR WB C 0 5 10 INPUT INPUT 898 969 938 1010 989 1061
26. 0 91 0 36 869 29 18 2 25 1 98 0 88 701 2 07 1 82 0 88 744 1 99 1 75 0 88 758 29 20 2 37 1 80 0 76 729 2 21 1 68 0 76 765 2 13 1 62 0 76 787 29 22 2 51 1 60 0 64 758 2 35 1 50 0 64 801 2 27 1 45 0 64 815 29 24 2 65 1 38 0 52 787 2 48 1 29 0 52 822 2 42 1 26 0 52 840 29 26 2 78 1 11 10 40 815 2 62 1 05 0 40 851 2 54 1 02 0 40 869 30 18 2 25 2 07 0 92 701 2 07 1 90 0 92 744 1 99 1 83 0 92 758 30 20 2 37 1 90 0 80 729 2 21 1 77 0 80 765 2 13 1 70 0 80 787 30 22 2 51 1 70 0 68 758 2 35 1 60 0 68 801 2 27 1 54 0 68 815 30 24 2 65 1 48 0 56 787 2 48 1 39 0 56 822 2 42 1 35 0 56 840 30 26 2 78 1 22 0 44 815 2 62 1 15 0 44 851 2 54 1 12 0 44 869 31 18 2 25 2 16 0 96 701 2 07 1 99 0 96 744 1 99 1 91 0 96 758 31 20 2 37 1 99 0 84 729 2 21 1 85 0 84 765 2 13 1 79 0 84 787 31 22 2 51 1 81 0 72 758 2 35 1 69 0 72 801 2 27 1 63 0 72 815 31 24 2 65 1 59 0 60 787 2 48 1 49 0 60 822 2 42 1 45 0 60 840 31 26 2 78 1 34 0 48 815 2 62 1 26 0 48 851 2 54 1 22 0 48 869 32 18 2 25 2 25 1 00 701 2 07 2 07 1 00 744 1 99 1 99 1 00 758 32 20 2 37 2 08 0 88 729 2 21 1 94 0 88
27. 25 1 56 0 48 689 3 11 1 49 0 48 730 3 02 1 45 0 48 746 2 92 1 40 0 48 779 23 22 3 38 1 22 0 36 713 3 26 1 17 0 36 759 3 18 1 14 0 36 779 13 05 1 10 0 36 812 24 18 3 11 1 99 0 64 656 2 98 1 91 0 64 689 2 86 1 83 0 64 722 2 76 1 76 0 64 754 24 20 3 25 1 69 0 52 689 3 11 1 62 0 52 730 3 02 1 57 0 52 746 2 92 1 52 0 52 779 24 22 3 38 1 35 0 40 713 3 26 1 30 0 40 759 3 18 1 27 0 40 779 3 05 1 22 0 40 812 24 24 13 55 0 99 0 28 746 3 42 0 96 0 28 787 3 34 0 93 0 28 812 3 23 0 91 0 28 853 25 18 3 11 2 12 0 68 656 2 98 2 03 0 68 689 2 86 1 95 0 68 722 2 76 1 87 0 68 754 25 20 3 25 1 82 0 56 689 3 11 1 74 0 56 730 3 02 1 69 0 56 746 2 92 1 63 0 56 779 25 22 3 38 1 49 0 44 713 3 26 1 43 0 44 759 3 18 1 40 0 44 779 3 05 1 34 0 44 812 25 24 3 55 1 14 0 32 746 3 42 1 09 0 32 787 3 34 1 07 0 32 812 3 23 1 03 0 32 853 26 18 3 11 2 24 0 72 656 2 98 2 15 0 72 689 2 86 2 06 0 72 722 2 76 1 98 0 72 754 26 20 3 25 1 95 0 60 689 3 11 1 87 0 60 730 3 02 1 81 0 60 746 2 92 1 75 0 60 779 26 22 3 38 1 62 0 48 713 3 26 1 56 0 48 759 3 18 1 53 0 48 779 3 05 1 46 0 48 812 26 24 3 55 1 28 0 36 746 3 42 1 23
28. 746 2 92 2 10 0 72 779 29 22 3 38 2 03 0 60 713 3 26 1 96 0 60 759 3 18 1 91 0 60 779 3 05 1 83 0 60 812 29 24 3 55 1 70 0 48 746 3 42 1 64 0 48 787 3 34 1 60 0 48 812 3 23 1 55 0 48 853 29 26 13 66 1 32 0 36 787 3 55 1 28 0 36 828 3 50 1 26 0 36 853 13 39 1 22 0 36 877 30 18 3 11 2 74 0 88 656 2 98 2 62 0 88 689 2 86 2 52 0 88 722 2 76 2 43 0 88 754 30 20 3 25 2 47 0 76 689 3 11 2 37 0 76 730 3 02 2 30 0 76 746 2 92 2 22 0 76 779 30 22 3 38 2 16 0 64 713 3 26 2 09 0 64 759 3 18 2 04 0 64 779 3 05 1 95 0 64 812 30 24 3 55 1 85 0 52 746 3 42 1 78 0 52 787 3 34 1 74 0 52 812 3 23 1 68 0 52 853 30 26 13 66 1 46 0 40 787 3 55 1 42 0 40 828 3 50 1 40 0 40 853 3 39 1 36 0 40 877 31 18 3 11 2 86 0 92 656 2 98 2 74 0 92 689 2 86 2 63 0 92 722 2 76 2 54 0 92 754 31 20 3 25 2 60 0 80 689 3 11 2 49 0 80 730 3 02 2 42 0 80 746 2 92 2 33 0 80 779 31 22 3 38 2 30 0 68 713 3 26 2 22 0 68 759 3 18 2 16 0 68 779 3 05 2 07 0 68 812 31 24 3 55 1 99 0 56 746 3 42 1 91 0 56 787 3 34 1 87 0 56 812 3 23 1 81 0 56 853 31 26 3 66 1 61 0 44 787 3 55 1 56 0 44 828 3 50 1 54 0 44 853
29. board to MU or MUX type 1 Turn ON the power supply indoor outdoor unit Yes Press once EMERGENCY OPERATION switch 3 min later check the self check result Does displayed on OPERATION INDICATOR wNo lamp on indoor unit 2 Refer to the Instruction of troubleshooting Serial signal error is indicated 0 5 sec ON 0 5 sec OFF Is this mis wiring poor contact or disconnection of wire Make them sure 1 Turn OFF the power supply indoor outdoor unit and disconnect indoor and outdoor connecting wire on indoor side 2 Short circuit between indoor terminal block and 3 3 Turn ON the power supply indoor unit and press once EMERGENCY OPERATION switch Is there 20V DC between both ends of R132 on indoor electronic control P C board By tester the stylus is between 0 20V Yes Turn OFF the power supply indoor unit Connect ON indoor and outdoor connecting wire Replace the indoor electronic control P C board Turn ON the power supply outdoor unit Check the outdoor power supply Is there 230V AC between outdoor terminal N No block CN TB1 power supply cord and Y connection es Is there 5V DC between J205 J101 on the deicer P C board 2 Replace the deicer P C board 4 Yes Turn ON the power supply indoor unit During EMERGENCY OPERATI
30. control in outdoor control signal thermistor system unit system Refer to 10 4 Check room Refer to Replace the Refer to 10 4 Replace the How to check temperature Check of indoor Check of deicer mis wiring and thermistor indoor fan electronic outdoor P C board serial signal and indoor motor control Ithermistor error When coil thermis P C board outdoor unit tor doesn t work Refer to 10 5 1 Test point diagram and voltage beet eee oboe SESS he Ee ee ee ee X1 The case of the trouble of the serial signal When the power is turned off and then turned on again the indication shows the trouble of mis wiring 23 t As for indoor unit MSC type refer to service manual OB385 or OB393 10 3 Trouble criterion of main parts MUH GA20VB m MUH GA25VB m MUH GAS35VB Part name Check method and criterion Figure Measure the resistance with a tester Part temperature 10 40 C m 1 Defrost A thermistor MTG 60kQ Open or short circuit nce et Measure the resistance between the terminals with a tester INNER Coil wiring temperature 10 40 C PROTECTOR MUH GAZ0 GAZ5VB Normal Abnormal 150 5 OPEN MUH GA20VB MUH GA25VB MUH GA35VB 90 10 C CLOSE MUH GA35VB C R
31. firming the horizontal vane is closed turn off the breaker and or disconnect the power plug 2 Be sure to turn OFF the power supply before removing the front panel the cabinet the top panel and the electronic control P C board 3 When removing the electronic control P C board hold the edge of the board with care NOT to apply stress on the components 4 When connecting or disconnecting the connectors hold the housing of the connector DO NOT pull the lead wires X igs Lead wiring Housing point 3 Troubleshooting procedure 1 First check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to indicate an abnormality To make sure check how many times the abnormality indication is flashing on and off before starting service work 2 If the electronic control P C board is supposed to be defective check the copper foil pattern for disconnection and the components for bursting and discoloration 3 When troubleshooting refer to 10 2 Instruction of troubleshooting 22 _ 10 2 Instruction of troubleshooting MUH GA20VB E MUH GA25VB E MUH GA35VB E Start Y Indoor unit operates Outdoor unit doesn t operate Indoor unit operates Outdoor unit doesn t operate normally Indoor unit doesn t receive the signal from remote controller OPERATION INDICATOR lamp on the indoor u
32. minutes measure temperature and take an average temperature 10 minutes later measure temperature again and check that the temperature does not change INDOOR UNIT OUTDOOR UNIT TE 2 H p ili im a WE Ws Wet and dry bulb Wet and dry bulb thermometers thermometers FRONT VIEW BACK VIEW 8 1 CAPACITY AND THE INPUT CURVES Cooling capacity Total input cooling 85 1 10011 0 ald 14 5 8 8378 31 3 5 13 S 871 12 26 s 12 ag 26 24 22 56 4 51 1 24 9 1 1 20 mm p 8 18 door ing 5 10 555 8 81 0 ake air wb 228 1 Lt perature 9 mi 205 51 90 9 Peraturer cy 0 9 spor intake 9 18 zum lt 27 30 35 40 43 27 30 35 40 43 aus pue Outdoor intake air DB temperature C Outdoor intake air DB temperature
33. 0 60 601 2 70 1 62 0 60 636 2 62 1 57 0 60 651 2 53 1 52 0 60 679 25 22 2 93 1 41 0 48 622 2 83 1 36 0 48 661 2 76 1 32 0 48 679 2 65 1 27 0 48 708 25 24 3 08 1 11 0 36 651 2 97 1 07 0 36 686 2 90 1 04 0 36 708 2 81 1 01 0 36 744 26 18 2 70 2 05 0 76 572 2 59 1 97 0 76 601 2 48 1 89 0 76 629 2 39 1 82 0 76 658 26 20 2 82 1 80 0 64 601 2 70 1 73 0 64 636 2 62 1 68 0 64 651 2 53 1 62 0 64 679 26 22 2 93 1 52 0 52 622 2 83 1 47 0 52 661 2 76 1 44 0 52 679 2 65 1 38 0 52 708 26 24 3 08 1 23 0 40 651 2 97 1 19 0 40 686 2 90 1 16 0 40 708 2 81 1 12 0 40 744 26 26 3 17 0 89 0 28 686 3 08 0 86 0 28 722 3 04 0 85 0 28 744 2 94 0 82 0 28 765 27 18 2 70 2 16 0 80 572 2 59 2 07 0 80 601 2 48 1 99 0 80 629 2 39 1 91 0 80 658 27 20 2 82 1 92 0 68 601 2 70 1 84 0 68 636 2 62 1 78 0 68 651 2 53 1 72 0 68 679 27 22 2 93 1 64 0 56 622 2 83 1 58 0 56 661 2 76 1 55 0 56 679 2 65 1 48 0 56 708 27 24 3 08 1 36 0 44 651 2 97 1 31 0 44 686 2 90 1 28 0 44 708 2 81 1 23 0 44 744 27 26 3 17 1 02 0 32 686 3 08 0 99 0 32 722 3 04 0 97 0 32 744 2 94 0 94 0 32 765 28 18 2 70 2 27 0 84 572 2 59 2 17 0 84
34. 1 57 0 56 744 30 26 3 17 1 40 0 44 686 3 08 1 36 0 44 722 3 04 1 34 0 44 744 2 94 1 30 0 44 765 31 18 2 70 2 59 0 96 572 2 59 2 48 0 96 601 2 48 2 38 0 96 629 2 39 2 30 0 96 658 31 20 2 82 2 37 0 84 601 2 70 2 27 0 84 636 2 62 2 20 0 84 651 2 53 2 13 0 84 679 31 22 2 93 2 11 0 72 622 2 83 2 04 0 72 661 2 76 1 99 0 72 679 2 65 1 90 0 72 708 31 24 3 08 1 85 0 60 651 2 97 1 78 0 60 686 2 90 1 74 0 60 708 2 81 1 68 0 60 744 31 26 3 17 1 52 0 48 686 3 08 1 48 0 48 722 3 04 1 46 0 48 744 2 94 1 41 0 48 765 32 18 2 70 2 70 1 00 572 2 59 2 59 1 00 601 2 48 2 48 1 00 629 2 39 2 39 1 00 658 32 20 2 82 2 48 0 88 601 2 70 2 38 0 88 636 2 62 2 31 0 88 651 2 53 2 23 0 88 679 32 22 2 93 2 23 0 76 622 2 83 2 15 0 76 661 2 76 2 10 0 76 679 2 65 2 01 0 76 708 32 24 3 08 1 97 0 64 651 2 97 1 90 0 64 686 2 90 1 85 0 64 708 2 81 1 80 0 64 744 32 26 3 17 1 65 0 52 686 3 08 1 60 0 52 722 3 04 1 58 0 52 744 2 94 1 53 0 52 765 NOTE Total capacity KW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity kW INPUT Total power input W WB Wet bulb temperature 15
35. 18 2 61 0 84 0 32 935 23 18 2 60 1 56 0 60 804 2 39 1 43 0 60 853 2 29 1 38 0 60 869 23 20 2 73 1 31 0 48 836 2 54 1 22 0 48 877 2 45 1 18 0 48 902 23 22 2 89 1 04 0 36 869 2 70 0 97 0 36 918 2 61 0 94 0 36 935 24 18 2 60 1 66 0 64 804 2 39 1 53 0 64 853 2 29 1 47 0 64 869 24 20 2 73 1 42 0 52 836 2 54 1 32 0 52 877 2 45 1 27 0 52 902 24 22 2 89 1 16 0 40 869 2 70 1 08 0 40 918 2 61 1 04 0 40 935 24 24 3 05 0 85 0 28 902 2 86 0 80 0 28 943 2 78 0 78 0 28 964 25 18 2 60 1 77 0 68 804 2 39 1 62 0 68 853 2 29 1 56 0 68 869 25 20 2 73 1 53 0 56 836 2 54 1 42 0 56 877 2 45 1 37 0 56 902 25 22 2 89 1 27 0 44 869 2 70 1 19 0 44 918 2 61 1 15 0 44 935 25 24 3 05 0 98 0 32 902 2 86 0 92 0 32 943 2 78 0 89 0 32 964 26 18 2 60 1 87 0 72 804 2 39 1 72 0 72 853 2 29 1 65 0 72 869 26 20 2 73 1 64 0 60 836 2 54 1 53 0 60 877 2 45 1 47 0 60 902 26 22 2 89 1 39 0 48 869 2 70 1 30 0 48 918 2 61 1 25 0 48 935 26 24 3 05 1 10 0 36 902 2 86 1 03 0 36 943 2 78 1 00 0 36 964 26 26 3 21 0 77 0 24 935 3 02 0 73 0 24 976 2 93 0 70 0 24 996 27 18 2 60 1 97 0 76 804 2 39 1 81 0 76 853 2 29 1 74 0 76 869 27 20
36. 32 35 60 70 Ambient temperature C Ambient humidity kgf om Gauge MPa Gauge MUH GA35VB E Outdoor low pressure 0 7 15 1820 50 Ambient temperature C Ambient humidity 25 3032 35 60 70 13 Outdoor unit current A Outdoor unit current A Outdoor unit current A MUH GA20VB m 1 15 1820 25 3032 35 50 60 70 Ambient temperature C Ambient humidity MUH GA25VB m 1 15 1820 25 3032 35 50 60 70 96 Ambient temperature C Ambient humidity MUH GA35VB m 1 3 15 1820 25 3032 35 C 50 60 70 Ambient temperature C Ambient humidity HEAT operation Condition indoor Dry bulb temperature 20 0 C Outdoor Dry bulb temperature 7 15 20 C Wet bulb temperature 14 5 C Wet bulb temperature 6 12 14 5 C MUH GA20VB MUH GA25VB m T T S S 230V 3 i 2 5 3 2 2 2021 25 C 7 ee 25 C pue ETE C MUH GA35VB E lt 5 230 5 2 o B 2 2021 25 C Ambient temperature C PERFORMANCE DATA COOL operation 230V MSC GA20VB E MUH GA20VB CAPACITY 2 3 kW SHF 0 74 INPUT 715 W OUTDOOR DB C INDOOR INDOOR 21 25 27 30 DB C WB C SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INP
37. 765 2 13 1 87 0 88 787 32 22 2 51 1 91 0 76 758 2 35 1 78 0 76 801 2 27 1 72 0 76 815 32 24 2 65 1 69 0 64 787 2 48 1 59 0 64 822 2 42 1 55 0 64 840 32 26 2 78 1 45 0 52 815 2 62 1 36 0 52 851 2 54 1 32 0 52 869 NOTE capacity KW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity KW INPUT Total power input W WB Wet bulb temperature 16 PERFORMANCE DATA COOL operation 230V MSC GA25VB E MUH GA25VB E CAPACITY 2 65 kW SHF 0 70 INPUT 820 W OUTDOOR DB C INDOOR INDOOR 21 25 27 30 DB C WB C SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 21 18 3 11 1 62 0 52 656 2 98 1 55 0 52 689 2 86 1 49 0 52 722 2 76 1 43 0 52 754 21 20 3 25 1 30 0 40 689 3 11 1 25 0 40 730 3 02 1 21 0 40 746 2 92 1 17 0 40 779 22 18 3 11 1 741 0 56 656 2 98 1 67 0 56 689 2 86 1 60 0 56 722 2 76 1 54 0 56 754 22 20 3 25 1 43 0 44 689 3 11 1 37 0 44 730 3 02 1 33 0 44 746 2 92 1 28 0 44 779 22 22 3 38 1 08 0 32 713 3 26 1 04 0 32 759 3 18 1 02 0 32 779 3 05 0 98 0 32 812 23 18 3 11 1 87 0 60 656 2 98 1 79 0 60 689 2 86 1 72 0 60 722 2 76 1 65 0 60 754 23 20 3
38. 8 0 24 1166 28 18 4 11 3 13 0 76 872 3 94 2 99 0 76 916 3 78 2 87 0 76 959 3 64 2 77 0 76 1003 28 20 4 29 2 74 0 64 916 4 11 2 63 0 64 970 3 99 2 55 0 64 992 3 85 2 46 0 64 1036 28 22 4 46 2 32 0 52 948 4 31 2 24 0 52 1008 4 20 2 18 0 52 1036 4 03 2 09 0 52 1079 28 24 4 69 1 88 0 40 992 4 52 1 81 0 40 1046 4 41 1 76 0 40 1079 4 27 1 71 0 40 1134 28 26 4 83 1 35 0 28 1046 4 69 1 31 0 28 1101 4 62 1 29 0 28 1134 4 48 1 25 0 28 1166 29 18 4 11 3 29 0 80 872 3 94 3 15 0 80 916 3 78 3 02 0 80 959 3 64 2 91 0 80 1003 29 20 4 29 2 92 0 68 916 4 11 2 80 0 68 970 3 99 2 71 0 68 992 3 85 2 62 0 68 1036 29 22 4 46 2 50 0 56 948 4 31 2 41 0 56 1008 4 20 2 35 0 56 1036 4 03 2 25 0 56 1079 29 24 4 69 2 06 0 44 992 4 52 1 99 0 44 1046 4 41 1 94 0 44 1079 4 27 1 88 0 44 1134 29 26 4 83 1 55 0 32 1046 4 69 1 50 0 32 1101 4 62 1 48 0 32 1134 4 48 1 43 0 32 1166 30 18 4 11 3 45 0 84 872 3 94 3 31 0 84 916 3 78 3 18 0 84 959 3 64 3 06 0 84 1003 30 20 4 29 3 09 0 72 916 4 11 2 96 0 72 970 3 99 2 87 0 72 992 3 85 2 77 0 72 1036 30 22 4 46 2 68 0 60 948 4 31 2 58 0 60 1008 4 20 2 52 0 60 1036 4 03 2 42
39. C 55 5 da oa EEI Z ES uec on OMA Heating capacity Total input heating j 15 13 E 7 8 12 26 12 a s 2 e 163 11 se g ampere 20 ES 8 Qe 811 97 10 m ay 9 ve 5 5 5 133 E09 wo 20 9 V SE 11 8 208 Sos oO 3 E 507 0 7 0 6 0 6 10 5 0 5 10 15 10 5 0 5 10 Outdoor intake WB air Outdoor intake air WB temperature C NOTE The above curves are for the heating operation without any frost MUH GA35VB 1 MSC GA20VB E1 MUH GA20VB E1 MSC GA25VB E1 MUH GA25VB E1 MSC GA35VB E1 12 8 2 0DUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation amp Both indoor and outdoor unit are under the same temperature humidity condition Dry bulb temperature Relative humidity 20 50 25 60 30 70 Air flow should be set at MAX The unit of pressure has been changed to MPa on the international system of units SI unit system The conversion factor is 1 MPa Gauge 10 2 kgf cm Gauge kaenriGauge MPalGause MUH GA20VB E 13 5 12 uv S on z 2 10 9 8 0 7 7 15 1820 50 25 30 32 35 C 60 70 96 Ambient temperature C Ambient humidity kgf en Gauge MPa Gauge MUH GA25VB E 1 3 o 12 2 2 1 5 10 9 9 0 7 7 15 1820 50 25 30
40. Changes for the Better MITSUBISHI ELECTRIC SPLIT TYPE HEAT PUMP AIR CONDITIONERS No OB387 HFC utilized SERVICE MANUAL vma Wireless type Models MUH GA20VB MUH GA25VB MUH GA35VB CONTENTS 1 TECHNICAL CHANGES 2 2 PART NAMES AND 6 3 SPECIFICATION nee erre eere ee rere niet 6 uu 4 NOISE CRITERIA CURVES 7 of 5 OUTLINES AND DIMENSIONS 8 mee name 6 WIRING DIAGRAM 9 EJ 7 REFRIGERANT SYSTEM 1 10 27 8 PERFORMANCE CURVES 11 9 SERVICE FUNCTIONS 22 10 TROUBLESHOOTING eere 22 11 DISASSEMBLY INSTRUCTIONS 29 19 32 This manual describes technical data of outdoor units As for indoor units MSC GA20 GA25 GA35VB E1 refer to the service manual OB385 As for indoor units MSC CA20 CA25 CA35VB Et refer to the service manual OB393 1 TECHNICAL CHANGES MUH A07YV MUH GA20VB IE Indication of capacity has been changed BTU base gt kw Dimension of outdoor unit has been changed 780Wx540Hx255D gt 800Wx550Hx285D Stop valve cover ha
41. ON Make the wiring between CN730 aide d Die penween DON pods on the deicer P C board and outdoor terminal block correct By tester the stylus is between 5 10V Replace the deicer P C board 26 When OPERATION INDICATOR lamp flashes 6 time Thermistors in the outdoor unit are abnormal Check of outdoor thermistor Replace the deicer P C board Defrost thermistor RT61 Reconnect CN661 Measure Turn ON the power Turn OFF the resistance Is the resistance of supply and press Does the unit operate power supply between CN 661 thermistor normal the EMERGENCY 10 minutes or more and OPERATION switch Replace the thermistor Defective contact of the connector is considered 27 PT 10 5 Test point diagram and voltage MUH GA20VB amp MUH GA25VB amp MUH GA35VB E Outdoor deicer P C board CN711 CN721 Outdoor fan motor R V coil Power supply input 230V AC 230V AC 230V AC Q NR61 Varistor F61 Fuse 2A 250V IRN 124 933 LEIO R601 5 10VDC Defrost interval time short pin JPDS JPSG Refer to 9 1 Jumper wire for change in defrost setting JRF JRG CN661 Refer to 9 2 Defrost thermistor RT61 12V DC 4204 J101 Defrost thermistor RT61 100 90 80 70 g 60 c S 50 2 40 30 20 10
42. UT 21 18 2 70 1 51 0 56 572 2 59 1 45 0 56 601 2 48 1 39 0 56 629 2 39 1 34 0 56 658 21 20 2 82 1 24 0 44 601 2 70 1 19 0 44 636 2 62 1 15 0 44 651 2 53 1 11 0 44 679 22 18 2 70 1 62 0 60 572 2 59 1 55 0 60 601 2 48 1 49 0 60 629 2 39 1 44 0 60 658 22 20 2 82 1 35 0 48 601 2 70 1 30 0 48 636 2 62 1 26 0 48 651 2 53 1 21 0 48 679 22 22 2 93 1 06 0 36 622 2 83 1 02 0 36 661 2 76 0 99 0 36 679 2 65 0 95 0 36 708 23 18 2 70 1 73 0 64 572 2 59 1 66 0 64 601 2 48 1 59 0 64 629 2 39 1 53 0 64 658 23 20 2 82 1 47 0 52 601 2 70 1 41 0 52 636 2 62 1 36 0 52 651 2 53 1 32 0 52 679 23 22 2 93 1 17 0 40 622 2 83 1 13 0 40 661 2 76 1 10 0 40 679 2 65 1 06 0 40 708 24 18 2 70 1 84 0 68 572 2 59 1 76 0 68 601 2 48 1 69 0 68 629 2 39 1 63 0 68 658 24 20 2 82 1 58 0 56 601 2 70 1 51 0 56 636 2 62 1 47 0 56 651 2 53 1 42 0 56 679 24 22 2 93 1 29 0 44 622 2 83 1 24 0 44 661 2 76 1 21 0 44 679 2 65 1 16 0 44 708 24 24 3 08 0 99 0 32 651 2 97 0 95 0 32 686 2 90 0 93 0 32 708 2 81 0 90 0 32 744 25 18 2 70 1 95 0 72 572 2 59 1 86 0 72 601 2 48 1 79 0 72 629 2 39 1 72 0 72 658 25 20 2 82 1 69
43. e conditions indicated by the performance curve 1 GUARANTEED VOLTAGE 198 264V 2 AIR FLOW Air flow should be set at MAX 3 MAIN READINGS m 1 Indoor intake air wet bulb temperature CWB 2 Indoor outlet air wet bulb temperature CWB Cooling 3 Outdoor intake air dry bulb temperature CDB 4 Total input W 5 Indoor intake air dry bulb temperature CDB 6 Outdoor intake air wet bulb temperature CWB Heating 7 Total input W Indoor air wet dry bulb temperature difference on the left side of the chart on page 10 shows the difference between the indoor intake air wet dry bulb temperature and the indoor outlet air wet dry bulb temperature for your reference at service 11 How to measure the indoor air wet bulb dry bulb temperature difference 1 o RO Attach at least 2 sets of wet and dry bulb thermometers to the indoor air intake as shown in the figure and at least 2 sets of wet and dry bulb thermometers to the indoor air outlet The thermometers must be attached to the position where air speed is high Attach at least 2 sets of wet and dry bulb thermometers to the outdoor air intake Cover the thermometers to prevent direct rays of the sun Check that the air filter is cleaned Open windows and doors of room Press the EMERGENCY OPERATION switch once twice to start the EMERGENCY COOL HEAT MODE When system stabilizes after more than 15
44. ers from that for R22 pipe For details of flaring work refer to Installation manual FLARING WORK Pipe diameter Dimension of flare nut pm O R410A Re 3 Refrigeration oil Apply the special refrigeration oil accessories packed with indoor unit to the flare and the union seat surfaces 4 Air purge Do not discharge the refrigerant into the atmosphere Take care not to discharge refrigerant into the atmosphere during installation reinstallation or repairs to the refrigerant circuit Use the vacuum pump for air purging for the purpose of environmental protection 5 Additional charge For additional charging charge the refrigerant from liquid phase of the gas cylinder If the refrigerant is charged from the gas phase composition change may occur in the refrigerant inside the cylinder and the outdoor unit In this case ability of the refrigeration cycle decreases or normal operation can be impossible However charging the liquid refrigerant all at once may cause the compressor to be locked Thus charge the refrigerant slowly Indoor unit Refrigerant gas cylinder operating valve Union Stop valve Outdoor unit Service port N Gauge manifold valve for R410A Refrigerant gas cylinder for R410A with siphon Refrigerant liquid Electronic scale for refrigerant charging 2 PART NAMES AND FUNCTIONS
45. it in HEAT mode by pressing the EMERGENCY OPERATION switch After 3 minutes does the unit No operate in COOL mode OK Yes Is there 230V AC between CN721 on the deicer P C board Replace the deicer P C board Replace the R V coil Unit operates HEAT mode even if it is set to COOL mode First measure the resistance of R V coil to confirm it is disconnected or is not short circuit Check of R V coil Turn ON the power supply and operate the indoor unit in COOL mode by pressing the EMERGENCY OPERATION switch Yes After 3 minutes does the unit operate in HEAT mode Yes Is there 230V AC between CN721 on the deicer board Replace the R V coil Replace the deicer P C board 25 When OPERATION INDICATOR lamp flashes 0 5 second intervals or 1 time Outdoor unit does not operate How to check mis wiring and serial signal error X 1 Set the switch SW2 on indoor electronic control P C board to MU or type when the outdoor unit is MU or MUX type If the setting is or MXZ type the unit does not work 2 Short circuit of JPG and JPS on the indoor electronic control board enables self check to be displayed 3 seconds Turn OFF the power supply indoor outdoor unit Set the switch SW2 on the indoor electronic Is the outdoor unit MUH type control P C
46. nit is flashing on and off aay Outdoor unit Outdoor unit Outdoor unit Unit doesn t Indoor unit meee unit operates in doesn t doesn t operate operates doesn t operate only Test Run operate stop even normal when the when the operation even in if indoor unit operation EMERGENCY EMERGENCY Test Run stops COOLor OPERATION operation HEAT mode switch is switch is pressed pressed Check room Refer to 10 4 Refer to 10 4 Refer to 10 4 Refer to 1 Check indoor temperature Check of Check of Check of Check of outdoor thermistor outdoor unit outdoor unit R V coil remote connecting ponte i controller 2 Referto diagram and and receiver Check of indoor voltage P C board electronic contro P C board Flash on and off at 2 time flash 3 time flash 4 time flash 6 flash 7 time flash 0 5 second intervals Cause _ Cause Cause Cause Cause Cause Indoor unit Indoor unit Indoor unit Outdoor unit Outdoor unit Indoor Outdoor unit Trouble of trouble of Trouble of Trouble of Trouble of E Mis wiring or indoor fan indoor unit thermistor outdoor trouble of serial indoor coil motor
47. nnecting wire Outdoor fan motor Rectify the indoor and doesn t operate outdoor connecting wire No Is there 5V DC between J205 J101 0n No Is there 230V AG between onthe No Is there 230V AC between LOHN on the deicer P C board compressor contactor S2C and the outdoor terminal block TB1 TAB 20 on the deicer P C board i Y Yes wres Check the outdoor fan motor Replace the Rectify the connecting wire and rectify the connecting deicer P C board wire 24 Is there 5V DC between J205 J1016 on Is there 230V AC between HN the deicer P C board on the outdoor terminal block TB1 Compressor and or outdoor fan motor doesn t stop Check of outdoor unit Turn OFF the power supply After 1 minute turn ON power supply again Does compressor stop Yes Is there 230V AC between 3 on the No compressor contactor 52C and INI on the Rectify the connecting wire outdoor terminal block TB1 Y Yes Replace the deicer P C board Replace the deicer P C board Does outdoor fan motor stop Yes Unit operates COOL mode even if it is set to HEAT mode First measure the resistance of R V coil to confirm it is disconnected or is not short circuit Check of R V coil Turn ON the power supply and operate the indoor un
48. on oil Model 350 NEO22 350 NEO22 620 NEO22 Thermistor RT61 at OC 33 18 33 18 33 18 NOTE Test conditions are based on ISO 5151 Cooling Indoor DB27 C WB19 C Heating Indoor DB20 C Outdoor DB35 C WB24 C Outdoor DB 7 C WB 6 C Indoor Outdoor piping length 5m 4 NOISE CRITERIA CURVES MUH GA20VB 1 FUNCTION LINE MUH GA25VB 1 FUNCTION COOLING MUH GA25VB rei fea HEATING Test conditions Test conditions Cooling DB35 C WB24C Cooling DB35 C WB24 C Heating DB 7 C WB 6C 55 Heating DB 7 C WB 6C 80 1 i i 80 1 a lt m 4 9 1 Q o q se e 70 70 1 i i J NC 70 3 3 f 8 RE 60 1 60 m T T Es 3 us a 5 50 q E 2 8 i NS i 1 NC 50 g a r T a I a z 40 T T s d 2 40 r T l i Nc 40 a E T p TE a EN KS i m i 3 i i 3 E i Ei a I T 1 30 T lI e E we we uq A Si S
49. s been added Outdoor fan motor has been changed RC6V20 AB gt RA6V21 AD Outdoor fan motor capacitor has been changed Compressor capacitor has been changed Outdoor heat exchanger has been changed L BEND gt FLAT gt 25 Indication of capacity has been changed BTU base gt kw Dimension of outdoor unit has been changed 780Wx540Hx255D gt 800Wx550Hx285D Stop valve cover has been added Outdoor fan motor has been changed RA6V33 FB gt RA6V33 KB Outdoor fan motor capacitor has been changed Compressor capacitor has been changed Outdoor heat exchanger has been changed 2 Row gt 1 Row m MUH A12YV 0 gt MUH GA35VB Indication of capacity has been changed BTU base kw Dimension of outdoor unit has been changed 780Wx540Hx255D gt 800Wx550Hx285D Stop valve cover has been added Outdoor fan motor has been changed RA6V33 FB gt RA6V33 KB Outdoor fan motor capacitor has been changed Compressor capacitor has been changed Size of stop valve gas has been changed 412 7 gt 9 52 Outdoor heat exchanger has been changed 2 Row 1 Row m pT INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT This room air conditioner adopts HFC refrigerant R410A which never destroys the ozone layer
50. sor 6 Recover gas from the refrigerant circuit NOTE Recover gas from the pipes until the pressure gauge 4 Way valve shows 0 kg cm 0 MPa d 7 Disconnect the welded part of the discharge pipe Suction 8 Disconnect the welded part of the suction pipe pipe 9 Remove nuts fixing the compressor Compressor 10 Remove the compressor ULLE 1 Compressor nuts 31 PARTS LIST 12 MUH GA35VB E MUH GA25VB E MUH GA20VB E 12 1 OUTDOOR UNIT STRUCTURAL PARTS X This figure shows MUH GA20VB 32 pT MUH GA20VB MUH GA25VB 1 MUH GA35VB 12 1 OUTDOOR UNIT STRUCTURAL PARTS Part numbers that are circled are not shown in the illustration Part No Part name Symbol in Wiring Diagram m Q ty unit MUH GA20VB 1 MUH GA25VB E1 MUH GA35VB E1 Remarks E02 904 630 OUTDOOR HEAT EXCHANGER 1 E02 905 630 OUTDOOR HEAT EXCHANGER E02 906 630 OUTDOOR HEAT EXCHANGER E02 904 301 OUTDOOR FAN MOTOR RA6V21 OO E02 905 301 OUTDOOR FAN MOTOR RA6V33 OO E02 899 232 CABINET E02 903 232 CABINET E02 927 521 GRILLE E02 665 501 PROPELLER E02 899 290 BASE E02 905 290 BASE E02 506 COMPRESSSOR RUBBER SET
51. ubject to change without notice Made in Japan
52. y bulb temperature SHC Sensible heat capacity kW INPUT Total power input W WB Wet bulb temperature 19 ee PERFORMANCE DATA COOL operation 230V MSC GA35VB E MUH GA35VB CAPACITY 3 5 kW SHF 0 66 INPUT 1090 W OUTDOOR DB C m INDOOR INDOOR 35 40 43 DB C WB C SHC SHF Q INPUT 21 18 3 43 1 65 0 48 1068 3 15 1 51 0 48 1134 3 03 1 45 0 48 1155 21 20 3 61 1 30 0 36 1112 3 36 1 21 0 36 1166 3 24 1 17 0 36 1199 22 18 3 43 1 78 0 52 1068 3 15 1 64 0 52 1134 3 03 1 57 0 52 1155 22 20 3 61 1 44 0 40 1112 3 36 1 34 0 40 1166 3 24 1 30 0 40 1199 22 22 3 82 1 07 0 28 1155 3 57 1 00 0 28 1221 3 45 0 97 0 28 1243 23 18 3 43 1 92 0 56 1068 3 15 1 76 0 56 1134 3 03 1 70 0 56 1155 23 20 3 61 1 59 0 44 1112 3 36 1 48 0 44 1166 3 24 1 42 0 44 1199 23 22 3 82 1 22 0 32 1155 3 57 1 14 0 32 1221 3 45 1 10 0 32 1243 24 18 3 43 2 06 0 60 1068 3 15 1 89 0 60 1134 3 03 1 82 0 60 1155 24 20 3 61 1 73 0 48 1112 3 36 1 61 0 48 1166 3 24 1 55 0 48 1199 24 22 3 82 1 37 0 36 1155 3 57 1 29 0 36 1221 3 45 1 24 0 36 1243 24 24 4 03 0 97
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