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SERVICE MANUAL MUZ-GA25VA - MUZ-GA35VA

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1. heat exchanger Symbol Q ty unit P in Wirin MUZ MUZ MUZ arts No Parts Name g GA25VAH GA35VA GA35VAH Remarks Diagram EI EI E02 927 113 BRUSH 1 E02 927 115 NOZZLE 1 E02 927 112 UNIVERSAL ADAPTER 1 51 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy sa MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE MITSUBISHI DENKI BLDG 2 2 3 MARUNOUCHI CHIYODA KU TOKYO100 8310 JAPAN O Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in Jan 2005 No OB379 6 New publication effective Jan 2005 Made in Japan Specifications subject to change without notice www ilmal mp pumput com
2. ud Rs 1 Wet dry bulb Wet and dry bulb thermometers thermometers FRONT VIEW BACK VIEW Cooling capacity Total input cooling 64 9 1 14 1 4 K 8 gg 58 8 3 13 813 ES s 29 53 7 6 12 26 12 22 28 5 26 24 20 20 49 6 8 5 1 1 24 14 18 5 2 Indoor g 7 Z 44 6 1 8 1 0 or intake 27 510 55 s a Wet butp 22 ul tem 5 3 9 5 5 0 9 femper ti 20 09 intake air We 3 re c E 18 woo N 2 ES Rs 27 30 35 40 4546 27 30 35 40 4546 URL N K 5 lt lt gt lt lt Outdoor intake air Dry bulb temperature C Outdoor intake air Dry bulb temperature 9955 299052 ago aam QOo ooo Da szzi Z 17 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy Heating capacit i i 19 7 247 2 g capacity ja Total input heating 5 20 s 18 2 22 8 1 2 lt 26 W 9 167 20 9 1 ary g 23 t Y F 53 152 19 0 5 10 a T Sy 8 x i7 5 28 137 17 14 09 xe gt S ww EE 55 121 1
3. Refrigerant pipe flared 49 52 150 69 i 170 5 gt 302 5 Service port 10 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy WIRING DIAGRAM MODEL WIRING DIAGRAM E1 MUZ GA25VA 1o o uuoo ejeoipu 104 juo 5 MOD JAIVA GION3 1OS Idle YOLSINYSHL 3d llVd3dN31 LNAI S91H JINON H3MOd LNADITISLNI Wdl MOO AH vSle YOLSINYAHL 381 VH3dl3 Nis 9 391430 H3MOd LN39ITT3 LNI 1089 AV I3H 69X PIX 9X HOLSINEIHL 39 1vd3dI 31 398VH98I0 29184 AOSZIVSI E1 ISNA 1084 1 4 d3WdO41JSNVu L 1081 YOLSINYAHL 1804430 1914 AOS21V02L 3SNA4 194 HOLSISNYHL H3MOd ONIHOLIMS 12881 YOLSIYVA Y9HN E9UN ddguosav JOUNS Lovsa 39078 TVNIINSH3 L cal bal 4504 YANNI HOLOW Nv4 HOOGLNO JW 3JINAON JAOIA 1980 AN THH JIVIS dOS euro 1985 dOSSdudNOD ON HOLIDVAVI NVd HOOALNO 999 sjoquiAS puoo 1eddoo es yz YOLSISSY OSNILIATT LN3HH O drou vrou WOO OWS g91 z91 HOLIOVdVO ONIHLOOWS 9690 8699 1890 Buous JOJ 011109 01 19491 911799 epis JOOPUI eui Inoqv L 31ON D OUTDOOR UNIT JOOPUI eui VOLY c91H 1918 9918
4. cv9NO YOLSISSY ONILIILIA LNJYYNI LE8H L9H HOLOV3H 191 H3INHOJSNVH LINJHYND 18 19 19 1919 AWVN TOEWAS AWVN T109WAS AWVN O 2 bleh eh Pacan 179 0 d H31H3ANI 9899 8290 v 9o 1084 um uu o x co 3d _ _ O _ oe cuu ex 9 ex N uaxv3ud o 91 Vr9ugr9qd m m 291 DNILO3NNOO LINN YOQANI OL TOEWAS 11 www ilmal mpopumput com HOLSIS3H 9NLLO313Q IN3HHO LE8H 194 SINGOW H3MOd 133911131 Wdl YOLOALOYd H92c HOISINHIHL JYNIVEJANIL LN3ramv 9914 H3MOd LN39ITISINI 10891 JAIVA qQION31OS HOLSIWH3HI 3dd 11VdddN31 7914 ualvaH 1S0H43A H H YS LZ H01SINd3HI IHNIVEIANIL JOHVHISIA 91 A0SZ1VSI 81 3505 1083 24 AV 13 69 99 FOX EIX HOISIWHAHI 1SOuUJ3Q 1914 AOSZ1V0ZL ASNA 194 YAWYOASNVYL 1081 HOLSIH
5. DB Dry bulb temperature WB Wet bulb temperature Rated frequency 96Hz OUTDOOR WB C INDOOR DB C 10 5 0 5 10 15 20 Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT 15 21 26 2 52 2 40 2 16 686 739 791 3 04 2 88 2 68 823 876 928 3 56 3 40 3 16 928 971 1023 4 08 3 88 3 68 1002 1044 1097 4 60 4 40 4 20 1066 1097 1150 5 08 4 88 4 68 1097 1129 1182 5 60 5 38 5 20 1118 1171 1213 NOTE Q Total capacity kW INPUT Total power input W 24 www ilmal mp pumput com DB Dry bulb temperature WB Wet bulb temperature Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy 9 ACTUATOR CONTROL MUZ GA25VA m MUZ GA35VA E MUZ GA25VAH MUZ GA35VAH E 9 1 Outdoor fan motor control The fan motor turns ON OFF interlocking with the compressor ON The fan motor turns ON 5 seconds before the compressor starts up OFF The fan motor turns OFF 15 seconds after the compressor has stopped running m 5 seconds 15 seconds ON i i i i lt gt gt Compressor OFF ON Outdoor fan motor OFF OFF 9 2 R V coil control Heating or ee saris ru Jug cater ey dira ON Cooling OFF Dry DROP
6. 1 TECHNICAL CHANGES MUZ A09YV E gt MUZ GA25VA MUZ A09YVH Em gt MUZ GA25VAH E 1 Indication of capacity has been changed BTU base gt kW base 2 Control method between indoor and outdoor unit has been changed 3 Power supply method has been changed change to supply from outdoor unit 4 Terminal block for power supply has been added 5 Power P C board has been changed 6 Inverter P C board has been changed 7 Refrigerant circuit has been changed e Compressor has been changed KNB073FBVH gt KNB065FDTH LEV has been removed and capillary tube has been added Bypass circuit for low outside temperature operation has been added Specification and position of muffler have been changed Path of outdoor heat exchanger has been changed e valve and R V coil have been changed Stop valve has been changed 8 Fan motor has been changed AC 9 Shape of grille has been changed 10 Shape of service panel has been changed 11 Shape of propeller has been changed 12 Quick Clean Kit has been added 13 Symbol on terminal block has been changed to S1 S2 S3 MUZ A12YV E gt MUZ GA35VA E MUZ A12YVH 7 MUZ GA35VAH E 1 Indication of capacity has been changed BTU base kW base 2 Control method between indoor and outdoor unit has been changed 3 Power supply method has been changed change to supply from
7. 1 5 1 0 5 1 0 0 5 0 5 0 0 0 0 0 0 0 0 50 100 150 Hz 0 50 100 150 Hz 0 50 100 150 Hz 100 150 Hz The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor The frequency of compressor correction factors Input correction factors Capacity correction factors S m correction factors OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT How to operate fixed frequency operation Test run operation 1 Press EMERGENCY OPERATION switch to COOL or HEAT mode COOL Press once HEAT Press twice 12 Test run operation starts and continues to operate for 30 minutes 13 Compressor operates at rated frequency in COOL mode or 58Hz in HEAT mode i4 Indoor fan operates at High speed 5 After 30 minutes test run operation finishes and EMERGENCY OPERATION starts Operation frequency of compressor i varies 6 To cancel test run operation EMERGENCY OPERATION press EMERGENCY OPERATION switch or any button on i remote controller on o NOTE 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 18 www ilmal mp pumput com Mitsubishi ilmal mp pumput huolt
8. hdytinpalvelu RefGroup Oy G ws 11 6 Troubleshooting flow When OPERATION INDICATOR lamp flashes 5 time Outdoor unit does not operate amp How to check inverter compressor Disconnect the connector CN61 between compressor and the intelligent power module IPM Check the voltage T between terminals See 11 6 Check of open phase Y Are the voltages balanced Yes Check the compressor Check the resistance of the intelligent power module 0 0 feet See 11 6 Check of intelligent power module Yes Is the resistance Replace the inverter P C See 11 6 Check of compressor 4 infinite board No 0 several Replace the inverter P C board and compressor Check of open phase OWith the connector between the compressor and the intelligent power module disconnected activate the inverter and check if the inverter is normal by measuring the balance of voltage between the terminals Output voltage V 115V lt lt Operation method Start cooling or heating operation by pressing EMERGENCY OPERATION Switch on the indoor unit test run mode refer to page 18 Measurement point Inverter P C board at 3 points Parts side BLK U WHT V BLK meee U Measure AC voltage between T Flashing WHT V RED W the lead wires at 3 points e NOTE 1 Output voltage varies accord
9. 983 4 52 1 54 0 34 1037 4 41 1 50 0 34 1069 4 27 1 45 0 34 1123 25 18 4 1113 04 0 74 864 3 94 2 91 0 74 907 3 78 2 80 0 74 950 3 64 2 69 0 74 994 25 20 4 298 2 66 0 62 907 4 1112 550 62 961 3 99 2 47 0 62 983 3 85 2 39 0 62 1026 25 22 14 46 2 2310 50 940 4 31 2 15 0 50 999 4 20 2 10 0 50 1026 4 03 2 01 0 50 1069 25 24 14 6911 78 0 38 983 4 52 1 72 0 38 1037 4 41 1 68 0 38 1069 4 27 1 62 0 38 1123 26 18 4 11 3 21 0 78 864 3 94 3 07 0 78 907 3 78 2 95 0 78 950 3 64 2 84 0 78 994 26 20 4 29 2 83 0 66 907 4 1112 7110 66 961 3 99 2 63 0 66 983 3 85 2 54 0 66 1026 26 22 4 4612 41 0 54 940 4 31 2 32 0 54 999 4 20 12 27 0 54 1026 4 03 2 17 0 54 1069 26 24 4 69 1 97 0 42 983 4 52 1 90 0 42 1037 4 41 1 85 0 42 1069 4 27 1 79 0 42 1123 26 26 14 831 1 45 0 30 1037 4 69 1 41 0 30 1091 4 62 1 39 0 30 1123 4 48 1 34 0 30 1156 27 18 4 1113 37 0 82 864 3 94 3 23 0 82 907 3 78 3 10 0 82 950 3 64 2 98 0 82 994 27 20 4 29 3 00 0 70 907 4 11 2 88 0 70 961 3 99 12 79 0 70 983 3 85 2 70 0 70 1026 27 22 446 2 59 0 58 940 4 31 2 50 0 58 999 4 20 2 44 0 58 1026 4 03 2 33 0 58 1069 27 24 1 4 6912 1610 46 983 4 52 2 08 0 46 1037 4 41 2 03 0 46 1069 4 27 1 96 0 46 1123 27 26 14 831 1 64 0 34 1037 4 69 1 5
10. 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 x L wewemgsan PVO toimea HFC 32 HFC 125 50 50 R22 100 Boiling point C 40 8 C Mpa ity 251 E c c S 2 tc x1 Ozone Destruction Parameter based on CFC 11 X2 Global Warmth Parameter based on CO H New Specification Current Specification The incompatible refrigeration oil easily separates from Since refrigerant and refrigeration oil are compatible each refrigerant and is in the upper layer inside the suction muffler 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 2 o O 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 MPa Gauge 10 2 kgf cm Gauge 3 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy Conversion chart of
11. Single phase 230V 50Hz Single phase 230V 50Hz Capacity Capacity Rated frequency Min Max 2 5 0 9 3 0 3 2 0 9 4 5 3 5 1 0 3 9 4 0 0 9 5 0 Dehumidification 1 4 2 0 m Air flow 21 1 890 2 058 2 178 lectrical Starting current 1 3 6 5 0 Compressor motor current 1 4 44 4 20 Fan motor current 1 0 31 0 35 Coefficient of performance C O 3 91 421 3 24 3 79 N o n n E O Model KNB065FDTH KNB073FDVH Output 500 550 Winding resistance at 20C U V 1 88 U W 1 88 U V 1 53 U W 1 53 V W 1 88 V W 1 53 Fan motor Model RA6V21 AB RC0J50 AL Winding resistance at 20 C WHT BLK 37 5 BLK RED 37 5 RED WHT 37 5 WHT BLK 347 BLK RED 281 Dimensions WxHxD 800x550x285 800x550x285 Weight 31 33 Sound level 1 46 47 48 Fan speed High Low 810 810 750 880 810 650 Fan speed regulator 1 2 3 Refrigerant filling capacity R410A 0 85 0 90 Refrigeration oil Model 320 NEO22 320 NEO22 Thermistor RT61 at 0C 32 6 32 6 Thermistor RT62 at 100 C 13 4 13 4 Thermistor RT64 at 50 C 17 17 Thermistor RT65 at 25 C 10 10 NOTE Test conditions are based on ISO 5151 Cooling Indoor Dry bulb temperature 27 C Wet bulb temperature 19 C Outdoor Dry bulb temperature 35 C Wet bulb temperature 24 C Heating Indoor Dry bulb tem
12. abnormality unit System troubleof serial signal Refer to Refer to 11 6 0 Check room Refer to Replace the Refer to 11 6 Refer to 11 6 0 Replace Check 11 2 2 Checkof How to check temperature Check of indoor How to check Check of inverter P C Flow chart of installation of of mis wiring thermistor indoor fan electronic inverter outdoor board the detailed the horizontal and serial and indoor motor control compressor thermistors outdoor unit vane signal error coil thermis P C board failure mode when tor recall function outdoor unit Refer to doesn t work Test point diagram and voltage 30 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy 11 4 Troubleshooting check table NOTE 1 The location of LED is illustrated at the right figure Refer to 11 7 1 2 LED lights up during normal operation Symptom LED indication Abnormal point Condition Detection method Inverter P C board Parts side LED Flashing e Check point Outdoor unit does not operate 1 time flash every 2 5 seconds NOTE For abnormality location refer to Indoor troubleshooting check table Refer to service manual OB371 Outdoor power system When it consecutively occurs 3times that the compressor stops for overcurrent protecti
13. im 4 99X gl o J 221 0 Z6NO QHvOH Od BON 69X quvos od 3d Alddns Ee wu OS e No 27 99 995 Nuo favo Hos moez i i N N i Lovsa soot J LL uude 19 3 Oston zz 9299 vevo v9X 272176 SS AU ross E 0 UN AN Z se Q g i drou mA TAN 35 i 91 291 THM imwO utuz OS Fair A MONI EN reavi 194 cai Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy MODEL WIRING DIAGRAM MUZ GA25VAH OUTDOOR UNIT 104 juo siojon 201990000 ejeoipu yooq euro o sjoquiAS puoo saddoo es yz Buas JOJ 011109 JOOPUI eui YOLSINYSHL JHNIVYIJANIL INJIINY S91H 109 JAIVA NOISNVdX3 Ad1 HOLSINH3H L JANIVAIJAWIL Nis r91qd 3JINGON H3MOd 1N39ITI31NI Wdl MOD AH SIC HOLSINEIHL JOHVYHOSIO 29184 39IA3G 1N39ITT31NI 10891 AV I3H r9X 89X YOLSINYAHL 1L50HH3G 1914 AOSZIVSI E1 515 084144 H3INHOJSNVH L 1081 HOLSIHVA f9UN E9HN A0SZ1v021 3504 194 dO1SISNVd1 H3MOd ONIHOLIMS 1288 YOLOW HOOdINO JW ddauosav JOUNS 39018 IVNIIAH3 L cal
14. uu ls s Jamod auin z JEWON 340 UONOUNJ fede uomnounj E294 dwel HO1VOIGNI apow eunjej yun 9 uonoejeq uoneoipul q31 jeuuouqe jo sjrejeq onjre 3 NOILWHAdO JO Joopino 100pu 1U10d dure ya eu 29 mp pumput com Imal Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy 11 3 Instruction of troubleshooting Indoor unit operates Outdoor unit doesn t Indoor unit operates Outdoor unit doesn t operate normally Indoor unit doesn t receive the signal from operate remote controller OPERATION INDICATOR lamp on the indoor unit is flashing on and off Outdoor unit operates in only Test Run operation p Outdoor unit Unit doesn t Indoor unit Indoor unit doesn t operate operates when doesn t operate i operate normal EMERGENCY when even in operation in OPERATION EMERGENCY Test Run COOL or Switch is pressed OPERATION operation HEAT mode switch is pressed xz If blinking of OPERATION INDICATOR lamp cannot be checked it can be checked with failure mode recall function As for Test run opearation refer to indoor unit
15. 538 2 70 1 97 0 73 563 2 60 1 90 10 73 589 24 20 3 06 1 87 0 61 538 2 94 1 79 0 61 570 2 85 1 74 0 61 582 2 75 1 68 0 61 608 24 22 3 19 1 56 0 49 557 3 08 1 51 0 49 592 3 00 1 47 0 49 608 2 88 1 41 0 49 634 24 24 3 351 1 241 0 37 582 3 2311 1910 37 614 3 15 1 17 1 0 37 634 3 0511 1310 37 666 25 18 2 94 2 26 0 77 512 2 81 2 17 0 77 538 2 70 2 08 0 77 563 2 60 2 0010 77 589 25 20 3 06 1 99 0 65 538 2 94 1 91 0 65 570 2 85 1 85 0 65 582 2 75 1 79 0 65 608 25 22 3 19 1 69 0 53 557 3 08 1 63 0 53 592 3 00 1 59 0 53 608 2 88 1 52 0 53 634 25 24 3 3511 37 0 41 582 3 2311 3210 41 614 3 1511 2910 41 634 3 0511 2510 41 666 26 18 2 94 2 38 0 81 512 2 81 2 28 0 81 538 2 70 2 19 0 81 563 2 60 2 11 0 81 589 26 20 3 06 2 11 0 69 538 2 94 2 03 0 69 570 2 85 1 97 0 69 582 2 75 1 90 0 69 608 26 22 319 182 0 57 557 3 08 1 75 0 57 592 3 00 1 71 0 57 608 2 88 1 64 0 57 634 26 24 3 35 1 51 0 45 582 3 23 1 45 0 45 614 3 15 1 42 0 45 634 3 05 1 37 0 45 666 26 26 3 45 1 1410 33 614 3 35 1 11 0 33 646 3 30 1 09 0 33 666 3 20 1 06 0 33 685 27 18 2 94 2 50 0 85 512 2 812 399 0 85 538 2 70 2 30 0 85 563 2 60 2 21 0 85 589 27 20 3 06 2 24 0 73 538 2 94 2 1410 73 570 2 85 2 08 0 73 582 2 75 2 01 0 73 608 27 22 3 19 1 94 0 61 557 3 08 1 88 0 61 592 3 00 1 83 0 61 608 2 88 1 75 0 61 634 27 24 13 35 1 64
16. 627 2 25 2 18 0 97 666 2 08 2 01 0 97 691 30 20 258 249 085 653 2 40 2 04 0 85 685 2 28 1 89 085 723 30 22 273 199 073 678 2 55 1 86 0 73 717 2 88 1 73 0 73 742 30 24 2 88 1 75 0 61 704 2 70 1 65 0 61 736 2 55 1 56 0 61 768 30 26 3 03 1 48 0 49 730 2 85 1 40 0 49 762 2 68 1 31 0 49 794 31 18 2 45 2 47 1 01 627 2 2512 2711 01 666 2 08 2 10 1 01 691 31 20 2 58 2 29 0 89 653 2 40 2 14 0 89 685 2 23 1 98 0 89 723 31 22 2 73 2 10 0 77 678 2 55 1 96 0 77 717 2 38 1 83 0 77 742 31 24 2 8811 87 0 65 704 2 70 1 76 0 65 736 2 55 1 66 0 65 768 31 26 3 03 1 60 0 53 730 2 85 1 51 0 53 762 2 68 1 42 0 53 794 32 18 2 45 2 57 1 05 627 2 25 2 36 1 05 666 2 08 2 18 1 05 691 32 20 2 58 2 39 0 93 653 2 40 2 23 0 93 685 2 23 2 07 0 93 723 32 22 2 73 2 21 0 81 678 2 55 2 07 0 81 717 2 38 1 92 0 81 742 32 24 2 88 1 98 0 69 704 2 70 1 86 0 69 736 2 55 1 76 0 69 768 32 26 3 03 1 72 0 57 730 2 85 1 62 0 57 762 2 68 1 52 0 57 794 NOTE Q 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 21 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja
17. MUZ GA25VAH MUZ GA35VAH gt Check the following points before checking electric continuity 1 Does the resistance of ambient temperature thermistor have the characteristics Refer to 11 7 1 2 Is the resistance of defrost heater normal Refer to 11 5 3 4 Does the heater protector remain conducted not open Are both ambient temperature thermistor and circuit of defrost heater securely connected to connectors In HEAT mode for more than 5 minutes let the ambient temperature thermistor continue to read 5C or less and let the defrost thermistor continue to read 1 C or less NOTE In case both thermistors are more than the above 2143 230V temperature cool them with cold water etc CN726 Is there 230V AC between CN722 and on the Yes No problem of the 2 power P C board Refer 11 7 2 power P C board 1 No CN722 Is the voltage between CN726 on the Yes Replace the power power P C board 0V DC Refer to 11 7 2 P C board I No 1 Replace the inverter P C board 26H 5 H Outdoor fan motor does not operate or stops immediately after starting up NW Check of inverter P C board Check the outdoor fan motor Refer to11 6 0 Check the connection of the connectors Inverter P C board CN932 driving output Solder side CN931 f
18. MUZ GA35VA MUZ GA25VAH LE1 MUZ GA35VAH e m Outdoor unit current A Outdoor unit current A 2 5 10 15 20 25 Ambient temperature C Ambient temperature C 19 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy gt PERFORMANCE DATA COOL operation Rated frequency 65Hz MSZ GA25VA MUZ GA25VA 2 MUZ GA25VAH E CAPACITY 2 5 kW SHF 0 79 INPUT 640 W OUTDOOR DB C INDOOR INDOOR 21 25 27 30 O SHC SHF INPUT Q SHC SHF INPUT Q SHF INPUT SHC SHE INPUT 21 18 2 94 1 79 0 61 512 2 81 1 72 0 61 538 2 70 1 65 0 61 563 2 60 1 59 10 61 589 21 20 _ 3 06 1 50 0 49 538 2 94 1 44 0 49 570 2 85 1 40 0 49 582 2 75 1 35 0 49 608 22 18 2 94 1 91 0 65 512 281 1 83 0 65 538 2 70 1 76 0 65 563 2 60 1 69 0 65 589 22 20 3 06 1 62 0 53 538 2 94 1 56 0 53 570 2 85 1 51 0 53 582 2 75 1 46 0 53 608 22 22 3 19 1 31 0 41 557 3 08 1 26 0 41 592 3 00 1 23 0 41 608 2 8811 18 0 41 634 23 18 2 94 2 03 0 69 512 2 81 1 94 0 69 538 2 70 1 86 0 69 563 2 60 1 79 0 69 589 23 20 3 06 1 75 0 57 538 2 94 1 67 0 57 570 2 85 1 62 0 57 582 2 75 1 57 0 57 608 23 22 3 19 1 43 0 45 557 3 08 1 38 0 45 592 3 00 1 35 0 45 608 2 88 1 29 0 45 634 24 18 2 94 2 14 0 73 512 2 81 2 05 0 73
19. Press EMERGENCY OPERATION switch Y Does the left lamp of OPERATION NDICATOR lamp light up lt Confirmation of the power to the indoor unit gt Yes y lt the self check of the indoor unit displayed 6 minutes after gt Check the power supply Check the wiring No Is there any mis N wiring poor contact Y o ire di i es x or wire disconnection Make them sure of the indoor outdoor connecting wire No The left lamp of Yes OPERATION INDICATOR lamp blinks quickly n k 4 Turn OFF the power supply Check once more if the indoor outdoor connecting wire is not mis wiring _ Short circuit outdoor terminal block S2 and S3 x1 the power supply of the outdoor unit In 3 minutes after turning ON the power supply of the outdoor unit does the LED on the inverter P C board repeat quick blinking 3 6 second OFF and 0 8 second ON Di por inverter Be sure to check above in 3 minutes Lighting after turning ON After 3 minutes LED blinks 6 times When the inverter P C board is normal LED also blinks 6 times after 3 minutes Yes Remove the short circuit between 3 1 Mis wiring may damage indoor electronic control P C board during the operation Be sure to confirm the wiring is correct before the
20. pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy wa OPERATING PROCEDURE PHOTOS 5 Removing outdoor fan motor Photo 6 1 Remove the top panel cabinet and service panel Refer to 1 2 Disconnect the power supply and indoor outdoor connecting wire and remove the back panel Refer to 1 3 Disconnect the connectors for outdoor fan motor 4 Remove the propeller nut 5 Remove the propeller 6 Remove the screws fixing the fan motor See Photo 7 7 Remove the fan motor 6 Removing the compressor and 4 way valve 1 Remove the top panel cabinet and service panel Refer to 1 2 Disconnect the power supply and indoor outdoor connecting wire and remove the back panel Refer to 1 3 Remove the inverter assembly Refer to 2 4 Recover gas from the refrigerant circuit NOTE Recover gas from the pipes until the pressure gauge shows 0 kg cm 0 MPa 5 Detach the welded part of the suction and the discharge Defrost thermistor pipe connected with compressor 6 Remove the nuts of compressor legs Photo 7 7 Remove the compressor 8 Detach the welded part of pipes connected with 4 way Screws of the outdoor fan motor valve See Photo 8 w as Propeller Photo 8 Welded parts of 4 way valve 47 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy 13 PARTS LIST
21. 1 05 0 41 768 26 18 2 45 1 98 0 81 627 2 25 1 82 0 81 666 2 08 1 68 0 81 691 26 20 2 58 1 78 0 69 653 2 40 1 66 0 69 685 2 28 1 54 0 69 723 26 22 2 73 1 55 0 57 678 2 55 1 45 0 57 717 238 1 35 0 57 742 26 24 288 1 29 045 704 2 70 1 22 0 45 736 255 1 15 0 45 768 26 26 3 03 1 00 0 33 730 2 85 0 94 0 33 762 2 68 0 88 0 33 794 27 18 12 45 208 0 85 627 2 25 1 91 0 85 666 2 08 1 76 0 85 691 27 20 2 58 1 88 0 73 653 2 40 1 75 0 73 685 2 28 1 62 0 73 723 27 22 2 73 1 66 0 61 678 2 55 1 56 0 61 717 2 38 1 45 0 61 742 27 24 288 141 049 704 2 70 1 32 0 49 736 255 1 25 049 768 27 26 3 03 112 0 37 730 2 85 1 05 0 37 762 2 68 0 99 0 37 794 28 18 1245 218 0 89 627 2 25 2 00 0 89 666 2 08 1 85 0 89 691 28 20 2 58 1 98 0 77 653 2 40 1 85 0 77 685 2 28 1 71 0 77 723 28 22 273 177 065 678 2 55 1 66 0 65 717 238 1 54 0 65 742 28 24 288 152 053 704 2 70 1 43 0 53 736 2 55 1 35 0 53 768 28 26 3 03 1 24 0 41 730 2 85 1 17 0 41 762 2 68 1 10 0 41 794 29 18 2 45 2 28 0 93 627 2 25 2 09 0 93 666 2 08 1 93 0 93 691 29 20 258 209 081 653 2 40 1 94 0 81 685 2 28 1 80 0 81 723 29 22 2 73 1 88 0 69 678 2 55 1 76 0 69 717 238 1 64 0 69 742 29 24 288 164 057 704 2 70 1 54 0 57 736 2 55 1 45 0 57 768 29 26 3 03 1 36 0 45 730 2 85 1 28 0 45 762 2 68 1 20 0 45 794 30 18 245 238 0 97
22. 75 1 42 0 38 1339 29 18 3 43 3 09 0 90 1058 3 15 2 84 0 90 1123 2 91 2 61 0 90 1166 29 20 3 61 2 81 0 78 1102 3 36 2 62 0 78 1156 3 12 2 43 0 78 1220 29 22 3 82 2 52 0 66 1145 3 57 2 36 0 66 1210 3 33 2 19 0 66 1253 29 24 403 2 17 0 54 1188 3 78 2 04 0 54 1242 3 57 1 93 0 54 1296 29 26 424 1 78 0 42 1231 3 99 1 68 0 42 1285 3 75 1 57 0 42 1339 30 18 3 43 3 22 0 94 1058 3 15 2 96 0 94 1123 2 91 2 73 0 94 1166 30 20 3 61 2 96 0 82 1102 3 36 2 76 0 82 1156 3 12 2 55 0 82 1220 30 22 3 82 2 67 0 70 1145 3 57 2 50 0 70 1210 3 33 2 33 0 70 1253 30 24 4 03 2 33 0 58 1188 3 78 2 19 0 58 1242 3 57 2 07 0 58 1296 30 26 424 1 95 0 46 1231 3 99 1 84 0 46 1285 3 75 1 72 0 46 1339 31 18 3 43 3 36 0 98 1058 3 15 3 09 0 98 1123 2 91 2 85 0 98 1166 31 20 3 61 3 10 0 86 1102 3 36 2 89 0 86 1156 3 12 2 68 0 86 1220 31 22 3 82 2 82 0 74 1145 3 57 2 64 0 74 1210 3 33 2 46 0 74 1253 31 24 4 03 2 50 0 62 1188 3 78 2 34 0 62 1242 3 57 2 21 0 62 1296 31 26 4 24 2 12 0 50 1231 3 99 2 00 0 50 1285 3 75 1 87 0 50 1339 32 18 3 43 3 50 1 02 1058 3 15 3 21 1 02 1123 2 91 2 96 1 02 1166 32 2
23. Blinking pattern when the indoor unit is abnormal Blinking at 0 5 Blinking at 0 5 2 5 second OFF second interval 2 5 second OFF second interval YP gt ON OFF lt gt 7 gt 7 p je POOS pu 5005 e p M gt lt gt 4 i Beeps Beeps Repeated cycle Repeated cycle Repeated cycle 3 Blinking pattern when the outdoor unit is abnormal m Blinking at 0 5 n at i e second interval 25 second a 3 second ON a second interval gt lt gt second OFF a 3 second ON B 3 S d No beep Beeps gt i No beep Beeps gt Repeated cycle Repeated cycle 5 Repeated cycle 27 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy 2 Flow chart of the detailed outdoor unit failure mode recall function Operational procedure There is a possibility that the outdoor unit is abnormal Confirm the presence of abnormality according to the following procedures Confirm that the remote controller is in the failure mode recall function WARM button to adjust the set temperature to 25 With the remote controller headed towards the indoor unit press TOO COOL or TOO 31 Regardless of normal or abnormal 2 short beeps are emitted as the signal is received Confirmation of abnormality presence Does the left lamp of OPERATION INDICATOR lamp
24. EN i 2 E udi 3 9 so E m a i a i I i 4NC 30 z 1 z F S F 1 M hs ha lt E Rs j 22 20L APPROXIMATE DN 2ol APPROXIMATE i F Pelr u THRESHOLD OF THRESHOLD OF gt F i amp HEARING FOR TNC 20 amp HEARING FOR F E i TNC 20 o CONTINUOUS t o CONTINUOUS t E i o 10 NOISE a 4 e il o 10 NOISE E i s 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREOUENCIES Hz BAND CENTER FREQUENCIES Hz OUTDOORUNIT St 1m MICROPHONE 9 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy 5 OUTLINES AND DIMENSIONS MUZ GA25VA m MUZ GA35VA m Unit mm MUZ GA25VAH m MUZ GA35VAH OUTDOOR UNIT m m REQUIRED SPACE Basically open 100mm or more without any obstruction in front and on both sides of the unit Drain hole 442 MUZ GA25 GA35VA Drain hole 433 MUZ GA25 GA35VAH 400 Air in oc SE 50 4 3 559 90 iri Ont Or BS 588 20 MM Open two sides of left 2 holes 10X21 40_ 2 right or rear side Air ou Service panel 22 3 23 yh Handle Liquid refrigerant pipe joint g Refrigerant pipe flared 6 35 to o 8 e amp N XM Gas refrigerant pipe joint
25. MUZ GA35VA E MUZ GA25VA E MUZ GA35VAH E MUZ GA25VAH mE 13 1 OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS 19 18 17 20 23 48 NT CX SL END EX YND GU END ND ND www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy MUZ GA25VA E1 MUZ GA35VA E MUZ GA25VAH m MUZ GA35VAH E 13 1 OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are not shown in the illustration Symbol Q ty unit Part No Part Name in Wiring MUZ MUZ MUZ MUZ Remarks GA25VA GA25VAH GA35VA GA35VAH Diagram EI E02 927 232 CABINET 1 1 1 1 E02 927 521 GRILLE 1 1 1 1 E02 931 501 PROPELLER 1 1 E02 927 501 PROPELLER 1 1 E02 927 290 BASE 1 E02 928 290 BASE E02 928 900 COMPRESSOR KNB065FDTH E02 927 900 COMPRESSOR KNB073FDVH E02 065 506 COMPRESSOR RUBBER SET E02 927 661 STOP VALVE GAS E02 927 662 STOP VALVE LIQUID E02 927 245 SERVICE PANEL E02 927 233 BACK PANEL E02 838 640 EXPANSION VALVE E02 927 493 EXPANSION VALVE COIL E02 927 961 4 WAY VALVE E02 931 961 4 WAY VALVE E02 928 079 THERMO HOLDER 928 525 CONDENSER WIRE NET 928 523 CONDENSER NET 838 523 CONDENSER NET 293 SEPARATOR 293 SEPARATOR 515 MOTOR SUPPO
26. Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated frequency 65Hz MSZ GA25VA I i MUZ GA25VA m MUZ GA25VAH CAPACITY 2 5 KW SHF 0 79 INPUT 640 W OUTDOOR DB C INDOOR INDOOR 35 40 46 DB Q sHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT 21 18 12 45 1 49 0 61 627 2 25 1 37 0 61 666 2 08 1 27 0 61 691 21 20 2 58 1 26 0 49 653 2 40 1 18 0 49 685 2 23 1 09 0 49 723 22 18 12 45 1 59 0 65 627 2 25 1 46 0 65 666 2 08 1 35 0 65 691 22 20 258 1 36 053 653 2 40 1 27 0 53 685 2 28 1 18 0 53 723 22 22 273 142 041 678 2 55 1 05 0 41 717 2 38 0 97 0 41 742 23 18 12 45 1 69 0 69 627 2 25 1 55 0 69 666 2 08 1 43 0 69 691 23 20 258 147 057 653 2 40 1 37 0 57 685 2 28 1 27 0 57 723 23 22 273 123 045 678 2 55 1 15 0 45 717 2 38 1 07 0 45 742 24 18 2 45 1 79 0 73 627 2 25 1 64 0 73 666 2 08 1 51 0 73 691 24 20 258 1 57 061 653 2 40 1 46 0 61 685 2 28 1 36 0 61 723 24 22 2 73 1 34 0 49 678 2 55 1 25 0 49 717 2 38 1 16 0 49 742 24 24 2 8811 0610 37 704 2 70 1 00 0 37 736 2 55 0 94 0 37 768 25 18 2 45 1 89 0 77 627 2 25 1 73 0 77 666 2 08 1 60 0 77 691 25 20 258 1 7 065 653 2 40 1 56 0 65 685 2 28 1 45 0 65 723 25 22 2 73 144 0 53 678 2 55 1 35 0 58 717 238 1 26 0 53 742 25 24 288 148 041 704 2 70 1 11 0 41 736 2 55
27. PIECE CUR TENES in but Ska OFF NOTE The 4 way valve reverses for 5 seconds right before start up of the compressor COOL lt HEAT gt 5 seconds 5 seconds ON E Compressor EN R V coil ON ON or orr OFF i i Outdoor fan ON p OFF motor 9 3 Relation between main sensor and actuator Actuator Outdoor Indoor Defrost Sensor Purpose fan motor coil tan motor heater Compressor Discharge temperature thermistor Protection Indoor coil temperature thermistor Cooling Coil frost prevention Heating High pressure protection Defrost thermistor Cooling High pressure protection Heating Defrosting Fin temperature thermistor Protection Ambient temperature thermistor Cooling Low ambient temperature operation Heating Defrosting Heater 1 MUZ GA35VA MUZ GA35VAH 2 MUZ GA25VA MUZ GA25VAH 25 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy 10 SERVICE FUNCTIONS MUZ GA25VA E MUZ GA35VA E MUZ GA25VAH m MUZ GA35VAH CHANGE IN DEFROST SETTING lt JS gt When the JS wire of the outdoor Inverter P C board is cut soldered the defrost finish temperature is changed Refer to 11 7 1 m m 1 Defrost finish temperature MUZ GA25VA MUZ GA25VAH 1 MU
28. Photo 1 the top panel Remove the screws fixing the cabinet Remove the cabinet Remove the screws fixing the back panel Remove the back panel 5 6 7 8 9 Photo 2 Screw of the Seen service panel Screws of hei the cabinet Direction to remove Screws of the cabinet 45 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy OPERATING PROCEDURE PHOTOS 2 Removing the inverter assembly inverter P C board and power P C board 1 Remove the top panel cabinet and service panel Refer to 1 2 Disconnect the power supply and indoor outdoor connecting wire and remove the back panel Refer to 1 3 Disconnect the ground wires See Photo 3 the lead wire to the reactor and the following connectors lt Power P C board gt CN721 4 way valve CN771 Fan motor MUZ GA25VA GA25VAH IE CN722 Defrost heater MUZ GA25 GA35VAH IE CN923 Solenoid valve coil MUZ GA25VA GA25VAH E Inverter P C board gt CN931 CN932 Fan motor MUZ GA35VA GAS35VAH Et CN644 Defrost thermistor and discharge temperature thermistor CN643 Ambient temperature thermistor CN724 LEV MUZ GA35VA GA35VAH Et Remove the compressor connector CN61 Remove the screws fixing the relay panel See Photo 3 Remove the inverter assembly See Photo 3 Disconnect all connectors and l
29. TEMPERATURE THERMISTOR RT65 E02 735 241 FUSE HOLDER E02 735 382 FUSE F61 E02 573 375 TERMINAL BLOCK TB1 E02 927 374 TERMINAL BLOCK TB2 3P E02 928 451 INVERTER P C BOARD Including heat sink and RT64 E02 932 451 INVERTER P C BOARD Including heat sink and RT64 E02 931 451 INVERTER P C BOARD Including heat sink and RT64 E02 934 451 INVERTER P C BOARD Including heat sink and RT64 E02 127 382 FUSE F71 F801 250V 3 15A E02 661 385 VARISTOR NR62 NR63 NR64 DEFROST DISCHARGE 250V 20A 3P h i mh oh mh mi 50 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy N MUZ GA25VA 1 MUZ GA35VA E 13 3 DRAIN SOCKET Outdoor unit 242 drain hole Soft vinyl chloride hose of 25mm inside diameter Symbol Q ty unit Parts No Parts Name in Wiring Diagram 1 02 838 704 DRAIN SOCKET 1 1 MUZ GA25VA i MUZ GA35VA Remarks MUZ GA25VA amp MUZ GA35VA E MUZ GA25VAH MUZ GA35VAH 13 4 QUICK CLEAN KIT You can clean the surface of the heat exchanger and line flow fan if you attach QUICK CLEAN KIT to your vacuum cleaner m
30. bal dOSSdudNOo ON FINGOW JAOIA 9988 1988 YOLSISSY ONILINIT INJYHNOD gr9u vr9u WOO 917291 HOLIOVdVO ONIHLOOWS 2690 890 1690 YOLSISSY ONILLO313Q 1N3Huf19 1884 194 HOLOV3H 191 H3WHOdSNVH1 LN3HHfO 18 19 19 1919 AWVN TOEWAS AWVN TOEWAS AWVN TOEWAS 01 19491 911199 epis JOOPUI eui Inoqv L 31ON Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy MODEL WIRING DIAGRAM E1 MUZ GA35VA OUTDOOR UNIT POLY 299 191 GOlH 5 dau E T ma AULAE 19 2 AA IIN i EL QHVOS 0 3 i TH9ND 1 9 ZE6NO LEGNO L09NO E N N i Aq1 5 a 3g Alddns QHVOS 0 d HALUJANI 1884 ya i _ x 5 INEO ZH0S ADE 1288 Kx NED N 10801 00881 ar LovSa v2 NO IL n ual 18 19 foe e ma 19 ENZ ZPSUN orc s ST O N 0899 9899 ves EA 0 07 79 L s OA 1083 A ud O GMAW c98V1l 0 278 E E nig cs 40 d vroudrou gt on o 198
31. from antennas receiver 5 Electric field intensity of the broadcast station affected by the electromagnetic noise 6 Presence or absence of amplifier such as booster 7 Operation condition of air conditioner when the electromagnetic noise enters in 1 Turn OFF the power supply once and then turn ON the power supply In this situation check for the electromagnetic noise 2 Within 3 minutes after turning ON the power supply press OPERATE STOP ON OFF button on the remote controller for power on and check for the electromagnetic noise 3 After a short time 3 minutes later after turning ON the outdoor unit starts running During operation check for the electromagnetic noise 4 Press OPERATE STOP ON OFF button on the remote controller for power off when the outdoor unit stops but the indoor outdoor communication still runs on In this situation check for the electromagnetic noise After checking the above consult the service representative 42 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy K j 11 7 Test point diagram and voltage MUZ GA25VA m MUZ GA35VA E MUZ GA25VAH MUZ GA35VAH E 1 Inverter P C board _ _ Output to drive Smoothing capacitor Smoothing capacitor Smoothing capacitor Back side of unit compressor C63C C63B C63A LDV LDW LDU oszE zog9c Pa m SGE
32. indoor unit is abnormal The outdoor unit is abnormal Check the blinking pattern and refer to confirm the Check the blinking pattern and refer to confirm the abnormal abnormal point point 11 2 3 Make sure to check at least two consecutive blinking cycles 2 Make sure to check at least two consecutive blinking cycles Releasing the failure mode recall function Release the failure mode recall function by the following procedures DWith the remote controller headed towards the indoor unit press any button that is not used in this failure mode recall function e g TIMER button OR Turn OFF the power supply and turn ON it again Press RESET button of the remote controller i Repair the defective parts l QAfter repairing the unit recall the failure mode again according to Setting up the failure mode recall function mentioned above Press EMERGENCY OPERATION switch so that the memorized abnormal condition is deleted Release the failure mode recall function according to Releasing the failure mode recall function mentioned above As for indoor unit refer to service manual OB378 Deleting the abnormal condition Note1 Make sure to release the failure mode recall function once it s set up otherwise the unit cannot operate properly 2 1f the abnormal condition is not deleted from the memory the last abnormal condition is kept memorized 3X2
33. input W WB Wet bulb temperature 22 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy PERFORMANCE DATA COOL operation Rated freguency 88Hz MSZ GA35VA MUZ GA35VA 2 MUZ GA35VAH CAPACITY 3 5 kW SHF 0 76 INPUT 1080 W OUTDOOR DB C INDOOR INDOOR 35 40 46 DB C WB C Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT 21 18 3 43 1 99 058 1058 3 15 1 83 0 58 1123 2 91 1 68 0 58 1166 21 20 3 61 1 66 0 46 1102 3 36 1 55 0 46 1156 3 12 1 43 0 46 1220 22 18 3 43 2 13 0 62 1058 3 15 1 95 0 62 1123 2 91 1 80 0 62 1166 22 20 3 61 1 80 0 50 1102 3 36 1 68 0 50 1156 3 12 1 56 0 50 1220 22 22 3 82 145 0 38 1145 3 57 1 36 0 38 1210 3 33 1 26 0 38 1253 23 18 3 43 2 26 0 66 1058 3 15 2 08 0 66 1123 2 91 1 92 0 66 1166 23 20 3 61 1 95 0 54 1102 3 36 1 81 0 54 1156 3 12 1 68 0 54 1220 23 22 3 82 1 60 0 42 1145 3 57 1 50 0 42 1210 3 33 1 40 0 42 1253 24 18 3 43 2 40 0 70 1058 3 15 2 21 0 70 1123 2 91 2 03 0 70 1166 24 20 3 61 2 09 0 58 1102 3 36 1 95 0 58 1156 3 12 1 81 0 58 1220 24 22 3 82 1 75 0 46 1145 3 57 1 64 0 46 1210 3 33 1 53 0 46 1253 24 24 403 1 37 0 34 1188 3 78 1 29 0 34 1242 3 57 1 21 0 34 1296 25 18 3 43 2 54 0 74 1058 3 15 2 33 0 74 1123 2 91 2 15 0 74 116
34. korjaa J hdytinpalvelu RefGroup Oy F PERFORMANCE DATA COOL operation Rated frequency 88Hz MSZ GA35VA MUZ GA35VA Eem MUZ GA35VAH E7 CAPACITY 3 5 kW SHF 0 76 INPUT 1080 W OUTDOOR DB C INDOOR INDOOR 21 25 27 30 DB C WB C sHc sHF INPUT O SHC SHF INPUT Q sHC SHF INPUT Q SHC SHF INPUT 21 18 4 1 2 39 0 58 864 3 94 2 28 0 58 907 3 78 2 19 0 58 950 3 64 2 11 0 58 994 21 20 14 2911 97 0 46 907 4 11 1 89 0 46 961 3 99 1 84 0 46 983 3 85 1 77 0 46 1026 22 18 4 41 2 55 0 62 864 3 94 2 44 0 62 907 3 78 2 34 0 62 950 3 64 2 26 0 62 994 22 20 4 29 2 14 0 50 907 4 11 2 06 0 50 961 3 99 2 00 0 50 983 3 85 1 93 0 50 1026 22 22 4 46 1 70 0 38 940 4 31 1 64 0 38 999 4 20 1 60 0 38 1026 4 03 1 53 0 38 1069 23 18 4 41 2 71 0 66 864 3 94 2 60 0 66 907 3 78 2 49 0 66 950 3 64 2 40 0 66 994 23 20 1 4 29 2 3210 54 907 441 2 22 0 54 961 3 99 12 15 0 54 983 3 85 2 08 0 54 1026 23 22 4 46 1 87 0 42 940 4 31 181 0 42 999 4 20 1 76 0 42 1026 4 03 1 69 0 42 1069 24 18 4 11 2 88 0 70 864 3 94 2 76 0 70 907 3 78 2 65 0 70 950 3 64 2 55 0 70 994 24 20 4 29 2 49 0 58 907 4 11 2 39 0 58 961 3 99 2 31 0 58 983 3 85 2 23 0 58 1026 24 22 4 46 2 05 0 46 940 4 31 1 98 0 46 999 4 20 1 93 0 46 1026 4 03 1 85 0 46 1069 24 24 14 69 1 5910 34
35. on the indoor unit blink at the interval of 0 5 seconds 2 Blinks The outdoor unit is abnormal Beep sounds are emitted at the same timing of the blinking of the left lamp of OPERATION INDICATOR lamp Yes Blinks The outdoor unit is abnormal Check the blinking pattern and refer to confirm the abnormal point 11 2 3 Make sure to check at least two consecutive blinking cycles 2 Releasing the failure mode recall function The outdoor unit is normal Release the failure mode recall function by the following procedures DTurn OFF the power supply and turn ON it again OPress RESET button of the remote controller DWith the remote controller headed towards the indoor unit press any button that is not used in this failure mode recall function e g TIMER button Release the failure mode recall function according to the left mentioned procedure Repair the defective parts Deleting the abnormal condition QAfter repairing the unit recall the failure mode again according to Setting up the failure mode recall function mentioned above Press EMERGENCY OPERATION switch so that the memorized abnormal condition is deleted Release the failure mode recall function according to Releasing the failure mode recall function mentioned above Note1 Make sure to release the failure mode recall function once it s set up otherwise the uni
36. operation starts 3 2 Be careful to the residual voltage of smoothing capacitor Is there any error of the pated pel tet II una indoor outdoor connecting wire yes Replace the between outdoor terminal block S2 such as the damage of the wire indoor outdoor and S3 lt Confirmation of serial No intermediate connection poor connecting signal gt contact to the terminal block No Yes Is there any error of the Is there 230V AC between outdoor indoor outdoor connecting wire Yes Replace the terminal block S1 and S2 such as the damage of the wire indoor outdoor Confirmation of power voltage No intermediate connection poor connecting Yes contact to the terminal block Replace the indoor electronic control P C board Be sure to release the failure mode recall function after checking 40 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy When the cool air does not blow out from the indoor unit Low Outside Temperature Operation or the condensed water drops from the indoor unit P Operation check of the solenoid valve Enter the failure mode recall function Do you hear the operation sound click sound of the solenoid valve The solenoid valve is normal every 5 seconds E Yes Check the ambient temperatur
37. service manual OB378 Check room Refer to 11 6 Refer to 11 6 8 Refer to 1 Check indoor outdoor temperature How to check Check of Check of connecting wire thermistor inverter R V coil remote controller Check if the power raceiver is supplied to the Refer to compressor Sc indoor unit 1 w i boar n S i point 2 a Is As for indoor unit diagram and eck of indoor voltage electronic control refer to service manual OB378 P C board and indoor fan motor All lamps Lett lamp Left lamp Left lamp Leftlamp Leftlamp Left lamp Left lamp Left lamp dy on a Flash on and 2 time flash 3 time flash 4 timeflash 5 time flash 6 time flash 7 timeflash 14 time flash Bude Mind it Cause Cause Cause Cause Cause Cause Cause Indoor unit Indoor unit Outdoor unit Outdoor unit Outdoor unit Outdoor unit Indoor unit i Cause room temp Trouble of e Trouble of Outdoor Trouble of e Trouble of Other The horizontal ndoor erature indoor fan indoor unit power thermistor outdoor abnormality vane is not Outdoor unit indoor coil motor control system in outdoor control installed i ULGOOr I L correctly Mis wiring or thermistor System
38. to 11 6 How to check inverter compressor Refer to 11 6 Check of intelligent power module 10 time flash 2 5 seconds OFF Outdoor fan When outdoor fan has stopped within 30 seconds 3 times a row after outdoor fan start up unit stops Refer to 11 6 0 Check of outdoor fan motor Refer to 11 6 Check of inverter P C board 12 time flash 2 5 seconds OFF Compressor each phase current When compressor each phase current cannot be detected normally Refer to 11 6 How to check inverter compresssor 13 time flash 2 5 seconds OFF DC voltage When DC voltage of inverter cannot be detected normally Check for short time power failure by such as lightning strike Refer to 11 6 0 How to check inverter compresssor Outdoor unit operates 1 time flash 2 5 seconds OFF Frequency drop by current protection When current from power outlet exceeds 5 2A MUZ GA25VA MUZ GA25VAH 6 1A MUZ GA35VA MUZ GA35VAH compressor frequency lowers 3 time flash 2 5 seconds OFF Frequency drop by high pressure protection When indoor coil thermistor exceeds 55 C in HEAT mode compressor frequency lowers Frequency drop by defrosting in COOL mode When indoor coil thermistor reads 8 C or less in COOL mode compressor frequency lowers The unit is normal but check the following Check if indoor filters are clogged Check if refrigerant is short Check if ind
39. 0 3 61 3 24 0 90 1102 3 36 3 02 0 90 1156 3 12 2 80 0 90 1220 32 22 3 82 2 98 0 78 1145 3 57 2 78 0 78 1210 3 33 2 59 0 78 1253 32 24 4 03 2 66 0 66 1188 3 78 2 49 0 66 1242 3 57 2 36 0 66 1296 32 26 4 24 2 29 0 54 1231 3 99 2 15 0 54 1285 3 75 2 02 0 54 1339 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 23 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy PERFORMANCE DATA HEAT operation MSZ GA25VA MUZ GA25VA 2 MUZ GA25VAH Rated frequency 85Hz CAPACITY 3 2 kW INPUT 760 W OUTDOOR WB C INDOOR 10 5 0 5 10 15 20 DB C O INPUT Q INPUT O INPUT Q INPUT Q INPUT Q INPUT Q INPUT 15 2 02 494 2 43 593 2 85 669 3 26 722 3 68 768 4 06 790 4 48 806 21 1 92 532 2 30 631 2 72 699 3 10 752 3 52 790 3 90 813 4 30 844 26 1 73 570 2 14 669 2 53 737 2 94 790 3 36 828 3 74 851 4 16 874 NOTE Q Total capacity KW MSZ GA35VA CAPACITY 4 0 kW E1 MUZ GA35VA INPUT 1055 W INPUT Total power input W E1 MUZ GA35VAH E1
40. 0 49 582 3 23 1 58 0 49 614 3 15 1 54 0 49 634 3 05 1 49 0 49 666 27 26 3 45 1 28 0 37 614 3 35 1 24 0 37 646 3 30 1 22 1 0 37 666 3 20 1 18 0 37 685 28 18 2 94 2 61 0 89 512 2 81 2 50 0 89 538 2 70 2 40 0 89 563 2 60 2 31 0 89 589 28 20 3 06 2 36 0 77 538 2 94 2 26 0 77 570 2 85 2 19 0 77 582 2 75 2 12 0 77 608 28 22 3 19 2 07 0 65 557 3 08 2 00 0 65 592 3 00 1 95 0 65 608 12 88 1 87 0 65 634 28 24 3 35 1 78 0 53 582 323 1 71 0 53 614 3 15 1 67 0 53 634 3 05 1 62 0 53 666 28 26 3 45 1 41 10 41 614 3 35 1 37 10 41 646 3 30 1 35 0 41 666 3 20 1 31 1 0 41 685 29 18 2 94 2 73 0 93 512 2 81 2 62 0 93 538 2 70 2 51 0 93 563 2 60 2 42 0 93 589 29 20 3 06 2 48 0 81 538 2 94 2 38 0 81 570 2 85 2 31 0 81 582 2 75 2 23 0 81 608 29 22 3 19 2 20 0 69 557 3 08 2 12 0 69 592 3 00 2 07 0 69 608 2 88 1 98 0 69 634 29 24 3 35 1 91 0 57 582 3 23 1 841 0 57 614 3 15 1 80 0 57 634 3 05 1 74 0 57 666 29 26 3 45 1 55 0 45 614 3 35 1 51 0 45 646 3 30 1 49 0 45 666_ 3 20 1 44 0 45 685 30 18 2 94 2 85 0 97 512 2 81 2 73 0 97 538 2 70 2 62 0 97 563 2 60 2 52 0 97 589 30 20 3 06 2 60 0 85 538 2 94 2 50 0 85 570 2 85 2 42 0 85 582 2 75 2 34 0 85 608 30 22 3 19 2 33 0 73 557 3 08 2 24 0 73 592 3 00 2 19 0 73 608 2 88 2 10 0 73 634 30 24 3 35 2 04 0 61
41. 0 VA 0 2 1HM is A0gg OS 194 za 5 13 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy 104 juo siojon MODEL WIRING DIAGRAM MUZ GA35VAH m TTI eyeoipu Joy 011109 OUTDOOR UNIT 4oo q euwe sjoquiAg puoo 1eddoo esfyz Buroiwes JOOpU eui 1994 epis eui L I LON YOLSISSY ONILO313Q0 LN3HHPDO 1884 194 JAIVA NOISNVdX3 A31 dOLSINd3H1 JHNLVYJANIL LNJIENV S91H JINAON H3MOd LNADITIALNI Ndl YOLSINYSHL 3d 11Vd3dN31l vOLY H3MOd LNADSITISLNI 10891 YOLOALOYd H31V3H H9c YOLSINYSHL JHNIVBIANAL JOYVHOSIC 29184 ddl1vaH LSOYsASG H MOOD AH vSle YOLSIWYAHL LSOY430 1914 AOSZIVSI E1 3SN4 1083 1 4 99X P9X E9X YOLSIYVA P9HN EIHN A0SZ1v0Z1 3814 194 YAINYOASNVYL 1081 YOLOW YOOGLNO dW ddauosav JOUNS Lovsd YOLSISNVYL H3MOd ONIHILIMS 12841 dOSS3ddINOO OIN 3JINAON JAOIA 998 988 32078 TYNINHIL TAL tal 91791 ONIHLOOWS 9699 8699 1890 HOLSIS3H SNI LINIT LIN3duno gr9u vr9tu YOLOVAY 191 HINYOASNYHL 1N3HHfO 18L19 19 1919 JINYN TOEWAS TOE
42. 2 56 0 58 1069 4 27 2 48 0 58 1123 30 26 _ 4 83 2 22 0 46 1037 4 69 2 16 0 46 1091 4 62 2 13 0 46 1123 4 48 2 06 0 46 1156 31 18 4 11 4 03 0 98 864 3 94 3 86 0 98 907 3 78 3 70 0 98 950 3 64 3 57 0 98 994 31 20 4 29 3 69 0 86 907 4 11 3 54 0 86 961 13 991 3 43 0 86 983 3 85 3 31 0 86 1026 31 22 4 46 3 30 0 74 940 14 31 3 19 0 74 999 4 20 3 11 0 74 1026 4 03 2 98 0 74 1069 31 24 4 69 2 91 0 62 983 4 52 2 80 0 62 1037 4 41 2 73 0 62 1069 4 27 2 65 0 62 1123 31 26 4 83 2 42 0 50 1037 4 69 2 35 0 50 1091 4 62 2 31 0 50 1123 4 48 2 24 0 50 1156 32 18 4 1114 1911 02 864 3 94 4 02 1 02 907 3 78 3 86 1 02 950 3 64 3 71 1 02 994 32 20 4 29 3 86 0 90 907 4 11 3 70 0 90 961 13 991 3 59 0 90 983 3 85 3 47 0 90 1026 32 22 4 46 3 48 0 78 940 14 31 3 36 0 78 999 4 20 3 28 0 78 1026 4 03 3 14 0 78 1069 32 24 4 69 3 10 0 66 983 14 52 2 98 0 66 1037 4 41 2 91 0 66 1069 4 27 2 82 0 66 1123 32 26 4 83 2 61 0 54 1037 4 69 2 53 0 54 1091 4 62 2 49 0 54 1123 4 448 2 42 0 54 1156 NOTE Q Total capacity kW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity kW INPUT Total power
43. 2eH peuoisip SI jue uno JosseJduioo JO USUM usej Ajyewuouqe snouosyouds 10ssa1duwon eA eA dois yosyn JosseJduioo YDSYI 01 MOH Y 9 LI 01 49J9H 1ue6tje1ur JUBLIND HYAGEVD ZNW VASEVO 440 Spuooes 9 340 Spuooes 92 J012euuoo 10sseJduioo Zni vvz MHVASZVD ZNW WASZVD ZNW VP ueuM ysel eum LL juaunoJeAQ uonoejoJd 1ueunoJeAQ Use euln p 340 Spuooes 92 Use euin z Jojsiuueu jueiquiy 340 Spuooes g z jo eui Jojsiuueuy O d Aq eq ueo 440 Spuooes oz SJOJSILUAU 1OOPINO Jojsiuueu S10 siuueu J00pino spuodas 2 Jojsiuueu 18019 44O Spuooes g z JO 439940 9 LL 01 Buluuni 10sse1duio0 uedo 10 1104S ueuM fue e USE WN Jojsiuueu SJo1siuueui JOOPINO Use dois Y98049 5 5 JOSSIIAUWO0I dn ueis 1eye lnuluu uiui 99u9 0 MOH V 9 01 uonoejoJd einjre dn uejs 10 uolno loid 1ue4no49A0 10 58015 340 Spuooes g z J0 2euuoo 10sseJduioo y ey s uun e 5 AjeAnnoesuoo N ueuM 5 5
44. 5 2 os oo ped ths EE 13 w 25 10 6 13 34 8 07 245 E 8 z 9 1 11 4 0 6 Jaga 5 51 5 10 5 5 10 15 5 0 10 15 Tn eos Outdoor intake air Wet bulb temperature P OUidao intake air Wet bulb temperature 325 5555 Dn gt o ipio o 49482 2292 o055 oog NOTE The above curves are for the heating operation without any frost NNAS 0225 0225 MUZ GA25VA Et MUZ GA25VA iE MUZ GA25VA E MUZ GA25VA 1 MUZ GA25VAH MUZ GA25VAH ei MUZ GA25VAH 1 MUZ GA25VAH 1 Correction of Cooling capacity Correction of Cooling total input Correction of Heating capacity LIN of Heating total input 1 5 1 5 2 0 v o o 2 7 8 5 815 515 1 0 10 S K c o g 9 9 1 0 21 8 E o o 20 5 90 5 gt 8 3 90 5 505 o c e g v 0 0 0 0 0 0 0 50 100 150 Hz 0 50 100 150 Hz 0 50 100 150 H2 100 150 Hz The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor The frequency of compressor m 1 MUZ GA35VA MUZ GA35VA E 1 MUZ GA35VAH MUZ GA35VA E MUZ GA35VA MUZ GA35VAH 1 MUZ GA35VAH et MUZ GA35VAH Correction of Cooling capacity Correction of Cooling total input Correction of Heating capacity of Heating total input 2 0 1 5 15
45. 582 3 23 1 97 0 61 614 3 15 1 92 0 61 634 3 05 1 86 0 61 666 30 26 3 45 1 69 0 49 614 3 35 1 64 0 49 646 3 30 1 62 0 49 666 3 20 1 57 0 49 685 31 18 2 94 2 97 1 01 512 2 81 2 84 1 01 538 2 70 2 73 1 01 563 2 60 2 63 1 01 589 31 20 3 06 2 73 0 89 538 2 94 2 61 0 89 570 2 85 2 54 0 89 582 2 75 2 45 0 89 608 31 22 3 19 2 45 0 77 557 3 0812 37 0 77 592 3 0012 31 0 77 608 2 88 2 21 0 77 634 31 24 3 35 2 18 0 65 582 3 28 2 10 0 65 614 3 15 2 05 0 65 634 3 05 1 98 0 65 666 31 26 3 4511 8310 53 614 13 3511 7810 53 646 3 30 1 75 0 53 666 3 2011 7010 53 685 32 18 2 94 3 08 1 05 512 2 81 2 95 1 05 538 2 70 2 84 1 05 563 2 60 2 73 1 05 589 32 20 3 06 2 85 0 93 538 12 94 2 73 0 93 570 2 85 2 65 0 93 582 2 75 2 56 0 93 608 32 22 3 19 2 58 0 81 557 3 0812 49 0 81 592 3 00 2 43 0 81 608 2 88 2 33 0 81 634 32 24 3 35 2 31 0 69 582 3 23 2 23 0 69 614 3 15 2 17 0 69 634 3 05 2 10 0 69 666 32 26 3 45 1 97 0 57 614 13 3511 9110 57 646 13 3011 88 0 57 666 13 2011 8210 57 685 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 www ilmal mp pumput com
46. 6 25 20 3 61 2 24 0 62 1102 3 36 2 08 0 62 1156 3 12 1 93 0 62 1220 25 22 3 82 1 91 0 50 1145 3 57 1 79 0 50 1210 3 33 1 66 0 50 1253 25 24 403 1 53 0 38 1188 3 78 1 44 0 38 1242 3 57 1 36 0 38 1296 26 18 3 43 2 68 0 78 1058 3 15 2 46 0 78 1123 2 91 2 27 0 78 1166 26 20 3 61 2 38 0 66 1102 3 36 2 22 0 66 1156 3 12 2 06 0 66 1220 26 22 3 82 2 06 0 54 1145 3 57 1 98 0 54 1210 3 33 1 80 0 54 1253 26 24 403 1 69 0 42 1188 3 78 1 59 0 42 1242 3 57 1 50 0 42 1296 26 26 4 24 1 27 0 30 1231 3 99 1 20 0 30 1285 3 75 1 12 0 30 1339 27 18 3 43 2 81 0 82 1058 3 15 2 58 0 82 1123 2 91 2 38 0 82 1166 27 20 3 61 2 52 0 70 1102 3 36 2 35 0 70 1156 3 12 2 18 0 70 1220 27 22 3 82 2 21 10 58 1145 3 57 2 07 0 58 1210 3 33 1 93 0 58 1253 27 24 403 1 85 0 46 1188 3 78 1 74 0 46 1242 3 57 1 64 0 46 1296 27 26 424 144 0 34 1231 3 99 1 36 0 34 1285 3 75 1 27 0 34 1339 28 18 3 43 2 95 0 86 1058 3 15 2 71 0 86 1123 2 91 2 50 0 86 1166 28 20 3 61 2 67 0 74 1102 3 36 2 49 0 74 1156 3 12 2 31 0 74 1220 28 22 3 82 2 37 0 62 1145 3 57 2 21 0 62 1210 3 33 2 06 0 62 1253 28 24 4 03 2 01 0 50 1188 3 78 1 89 0 50 1242 3 57 1 79 0 50 1296 28 26 4 24 1 61 10 38 1231 3 99 1 52 0 38 1285 3
47. 9 0 34 1091 4 62 1 57 0 34 1123 4 48 1 52 0 34 1156 28 18 4 11 3 54 0 86 864 3 94 3 39 0 86 907 3 78 3 25 0 86 950 3 64 3 13 0 86 994 28 20 1 4 2913 17 0 74 907 441 3 04 0 74 961 3 99 2 95 0 74 983 3 85 2 85 0 74 1026 28 22 446 277 0 62 940 4 31 2 67 0 62 999 4 20 2 60 0 62 1026 4 03 2 50 0 62 1069 28 24 4 69 12 35 0 50 983 4 52 2 26 0 50 1037 4 41 2 21 0 50 1069 4 27 2 14 0 50 1123 28 26 4 83 1 84 0 38 1037 4 69 1 78 0 38 1091 4 62 1 76 0 38 1123 4 48 1 70 0 38 1156 29 18 4 1113 70 0 90 864 3 94 3 54 0 90 907 3 78 3 40 0 90 950 3 64 3 28 0 930 994 29 20 4 29 3 34 0 78 907 4 1113 2110 78 961 3 99 3 11 0 78 983 3 85 3 00 0 78 1026 29 22 446 2 95 0 66 940 4 31 2 84 0 66 999 4 20 2 77 0 66 1026 4 03 2 66 0 66 1069 29 24 4 69 12 53 0 54 983 4 52 2 44 0 54 1037 4 41 2 38 0 54 1069 4 27 2 31 0 54 1123 29 26 4 83 2 03 0 42 1037 4 69 1 97 0 42 1091 4 62 1 94 0 42 1123 4 48 1 88 0 42 1156 30 18 4 11 3 87 0 94 864 3 94 3 70 0 94 907 3 78 3 55 0 94 950 3 64 3 42 0 94 994 30 20 4 29 3 52 0 82 907 4 11 3 37 0 82 961 3 99 3 27 0 82 983 3 85 3 16 0 82 1026 30 22 14 4613 1210 70 940 4 31 3 01 0 70 999 4 20 2 94 0 70 1026 4 03 2 82 0 70 1069 30 24 4 69 12 72 0 58 983 4 52 2 62 0 58 1037 4 41
48. Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy Changes for the Better MITSUBISHI ELECTRIC SPLIT TYPE HEAT PUMP AIR CONDITIONERS No OB379 HFC utilized SERVICE MANUAL dues Wireless type Models MUZ GA25VA MUZ GA35VA MUZ GA25VAH MUZ GA35VAH CONTENTS 1 TECHNICAL CHANGES 2 2 PART NAMES AND 6 5 SPECIFICATION S 7 n 4 NOISE CRITERIA CURVES 9 Indication of model name 5 OUTLINES AND DIMENSIONS 10 MUZ GA25VA 6 WIRING DIAGRAN 11 MUZ GA35VA 7 REFRIGERANT SYSTEM DIAGRAM 15 MUZ GA25VAH E 8 PERFORMANCE CURVES 17 MUZ GA35VAH ET ACTUATOR CONTROL 25 10 SERVICE 26 11 TROUBLESHOOTING 26 12 DISASSEMBLY INSTRUCTIONS 45 1399PARTSIPISTE ERR RR 48 NOTE This service manual describes technical data of the outdoor units As for indoor units MSZ GA22VA E MSZ GA25VA E and MSZ GAS35VA E refer to the service manual OB378 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy
49. N No gt gt o O mi gt i 292 Ses T D Up s 25 DB61 280V 370V Ent amp x DC Op amp 5 E Oy 29 J OSV 2 aol GND LED monitor mox exu lamp C 289 5258 38 B 58 55 S Jumper wire for change in defrost setting JS Og 05005251 Output to drive Connecting 230V AC connector Z ESS 3 amp 3 outdoor fan motor wire with DB61 CN724 589 559 53 CN932 Front side of unit power P C a So Sg 8 board 3 33 3 5 MUZ GA35VA CN725 a gd 28 25 MUZ GA35VAH 5 2 ag v Z E E o o Fin temperature thermistor RT64 MENESENREENXENH NI Resistance Resistance kO 0 0 0 10 20 30 40 50 E 70 8 80 20 10 0 10 20 30 40 0 10 20 30 E 50 60 70 C 90 100 110 120 Temperature C Temperature C emperature C 43 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy ani MUZ GA25VA MUZ GA25VAH E 2 Power PC board MUZ GA35VA E MUZ GA35VAH E MUZ GA25VA MUZ GA25VAH Back side of unit side of unit choos valve coil Varistor ME MN SOI 230V AC NR63 NR62 NR64 o g o o EA EY o o 230V AC MUZ GA25VA MUZ GA25VAH Output to drive outdoor Fan motor CN771 230V AC 7 EE R
50. Outdoor unit Refrigerant piping length one way Mogel precharged 8m 9m 10m 11m 12m 13m MUZ GA25VA 850 MUZ GA25VAH 90 150 180 210 240 MUZ GA35VA MUZ GA35VAH Calculation Xg 30g mx Refrigerant piping length m 5 16 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy 8 PERFORMANCE CURVES MUZ GA25VA MUZ GA35VA E MUZ GA25VAH m MUZ GA35VAH 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 provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve 1 GUARANTEED VOLTAGE 207 253V 50Hz 2 AIR FLOW Air flow should be set at MAX 3 MAIN READINGS m m 1 1 Indoor intake air wet bulb temperature C WB 2 Indoor outlet air wet bulb temperature WB Cooling 3 Outdoor intake air dry bulb temperature C DB 4 Total input W 5 Indoor intake air dry bulb temperature C DB 6 Outdoor intake air wet bulb temperature WB Heating 7 Total input W Indoor air wet dry bulb temp
51. RT 515 MOTOR SUPPORT 297 TOP PANEL 630 OUTDOOR HEAT EXCHANGER 301 OUTDOOR FAN MOTOR RA6V21 301 OUTDOOR FAN MOTOR RC0J50 526 DEFROST HEATER 381 HEATER PROTECTOR 937 CAPILLARY TUBE 23 0X 2 0x240 936 CAPILLARY TUBE 3 0 21 4 800 936 CAPILLARY TUBE 3 0x41 4X500 642 CHECK VALVE 490 SOLENOID VALVE COIL SOLENOID VALVE mh J A k k 03 A 49 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy K MUZ GA25VA MUZ GA35VA E MUZ GA25VAH MUZ GA35VAH E 13 2 OUTDOOR UNIT ELECTRICAL PARTS A Part numbers that are circled are not shown in the illustration Symbol Q ty unit Part No Part Name in Wiring MUZ MUZ MUZ MUZ Remarks Diagram GA25VA GA25VAH 1 1 1 1 E02 838 337 REACTOR L61 1 1 1 1 E02 927 444 POWER P C BOARD 1 E02 931 444 POWER P C BOARD E02 928 444 POWER P C BOARD E02 932 444 POWER P C BOARD E02 927 490 R V COIL 2154 E02 928 490 R V COIL 21S4 E02 927 306 THERMISTOR SET RT61 RT62 E02 927 308 AMBIENT
52. V coil CN721 230V AC Connecting wire with inverter P C board CN726 Refer to 11 6 230V AC Heater connector CN722 Refer to 11 6 raea MUZ GA25VAH MUZ GA35VAH 44 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy 12 DISASSEMBLY INSTRUCTIONS Terminal with locking mechanism Detaching points 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 2 The terminal with this connector has the locking mechanism Slide the sleeve Hold the sleeve and OPUII the terminal while pull out the terminal pushing the locking slowly lever Connector MUZ GA25VA MUZ GAS35VA E MUZ GA25VAH m MUZ GA35VAH E OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1 Removing the cabinet Photo 1 1 Remove the screw fixing the service panel See Photo 2 2 Pull down the service panel and remove it See Photo 2 Screws 3 Disconnect the power supply and indoor outdoor connecting wire of the Screws of 4 Remove the screws fixing the top panel See Photo 1 top panel the cabinet Screws of Remove the top panel See
53. VA P9HN EIHN ddguosavaouns YOLSISNVYL H3MOd SNIHOLIMS 1288 35NJ YANNI HOLOW NVJ HOOG LNO dW JINON aqolq 998 1988 1olo uuoO TTT Ieuluu l 39018 TYNINYIJL 281 7181 HOSSIHAWOI ON HOLIOVdVO NVA HOOdINO 999 ejeorpur 104 juo Jaddoo esfyz Joy 011109 1994 9111998919 epis eui 1 3 LON Buroiwes JOOpU eui AV THH JIVIS ANOS 1985 OWO 91791 YOLIOVdVO ONIHLOOWS 9690 8690 V69 HOLSIS3H ONLLIATT LN3H8fO gr9u vrou YOLOVAY 191 YAWYOSASNVYL LINJHYHYND 18 1 19 1919 3INVN T108WAS 3INVN O8WAS 3INVN TOEWAS 12 www ilmal mp pumput com 91 Z91H 191M G9lH 458 O rig 2 m L ese Mm Me tate Kemi PH o Saa t erar mrt n ris JUU j E zn PERI pito EIN kal i Zb9ND Lv9NO 9 LO9NO u a o 1 e
54. WAS AWVN 9 Jrezno 2 Mg i MIA H9c i rg gau U YT yg MIANYD O NUD Q 291 98V 1 reos aiu 80 25 s 138 gt Z LHM 193 LHM AES E TOEWAS 3d A1ddns jH3MOd ZHOS AOE N 14 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy 7 REFRIGERANT SYSTEM DIAGRAM MUZ GA25VA E Unit mm MUZ GA25VAH OUTDOOR UNIT m Refrigerant pipe 9 52 4 way valve with heat insulator Flared connection Outdoor Discharge heat temperatuer exchanger thermistor RT62 Y Ambient i temperature Defrost thermistor thermistor RT61 Capillary tube Solenoid ral Flared connection 3 0X91 4X500 valve X R V coil 4 heating ON Capillary tb cooling OFF Stop valve aplllary tube with strainar 3 0X41 4X800 Refrigerant pipe 6 35 with heat insulator Refrigerant flow in cooling gt Refrige
55. Z GA35VA MUZ GA35VAH Jumper wire soldered N 1 7 Initial setting 5c 8c 8 c none o cut 8c 15C 8C 15C 11 TROUBLESHOOTING MUZ GA25VA E MUZ GA35VA E MUZ GA25VAH MUZ GAS35VAH 11 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 confirming 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 electrical parts be careful to the residual voltage of smoothing capacitor 4 When removing the electronic control P C board hold the edge of the board with care NOT to apply stress on the components 5 When connecting or disconnecting the connectors hold the housing of the connector DO NOT pull the lead wires X S Lead wiring Housing point m 1 3 Troubleshooting procedure 1 First check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to
56. aa ja korjaa J hdytinpalvelu RefGroup Oy OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL Operation Dry bulb temperature Relative humidity Both indoor and outdoor unit are under the same temperature humidity condition 20 50 Q Air flow High speed 25 60 Operational frequency 65Hz MUZ GA25VA MUZ GA25VAH 30 70 88Hz MUZ GA35VA MUZ GA35VAH MUZ GA25VA 1 MUZ GA35VA Et MUZ GA25VAH 1 MUZ GA35VAH 1 kgf cm Gauge MPa Gauge kgf cm Gauge MPa Gauge 14p 1 4 14p 1 4 Pe ipa amp 10 1 0 ce 2 08 E Poe 5 6 5 6 0 6 Pism 8 EAT LI 2L 0 2 2L 0 2 15 1820 25 30 32 35 C 15 1820 25 30 32 35 C 50 60 70 50 60 70 Ambient temperature C Ambient humidity Ambient temperature C Ambient humidity MUZ GA25VA E1 MUZ GA35VA 1 MUZ GA25VAH 1 MUZ GA35VAH 1 lt o E x 8 5 o pent 5 8 9 3 5 rj 2 2 15 1820 25 3032 35 C 15 1820 25 3032 35 C 50 60 70 50 60 70 Ambient temperature C Ambient humidity Ambient temperature C Ambient humidity HEAT operation Condition indoor Dry bulb temperature 20 0 C Wet bulb temperature 14 5 C Condition outdoor Dry bulb temperature 2 7 15 20 0 C Wet bulb temperature 1 6 12 14 5 C MUZ GA25VA E1
57. and measure the resistance between the Ohmmeter indication compressor terminals Measurement point at 3 points 42 BLK WHT BLK RED Measure the resistance between the QE WHT RED lead wires at 3 points 2 lt lt Judgement gt gt Refer to 11 5 SI Abnormal short Infinite Q Abnormal open QE NOTE 1 Be sure to zero the ohmmeter before measurement 8 2 Winding resistance for each phase at 20 C Refer to 3 SPECIFICATION T 28 Check of compressor operation time 0 second GO Connect the compressor and activate the inverter Then measure the time until the inverter stops due to over current Operation method 10 seconds Start heating or cooling operation by pressing EMERGENCY OPERATION switch on the indoor unit Test run mode lt lt Measurement gt gt Measure the time from the start of outdoor fan running to the stop of compressor due to over current 60 seconds lt lt Judgement gt gt For reference 0 10 seconds Abnormal compressor short or poor contact 10 60 seconds Abnormal compressor lock out 60 seconds 5 minutes Abnormal refrigerant circuit defect more than 5 minutes Normal 5 minutes 34 www ilmal mp pumput com Normal 1 several Q Compressor motor I Abnormal 00 short Abnormal infinite open Outdoor fan starts Abnormal Compressor winding short or layer short Co
58. e No Is CN923 on the outdoor power P C board thermistor RT65 in the outdoor unit Correct the connection firmly connected without disconnection or loose connection Yes Disconnect CN923 and measure the voltage between the pins using tester Does it repeat to go 0V and 230VAC at 5 Trouble of the solenoid valve No Are the cords between CN726 CN727 on the outdoor power P C board and CN725 on the outdoor inverter P C board firmly connected without disconnection or loose connection Measure the solenoid valve resistance Is the resistance normal Open or short abnormal Refer to 11 5 No Trouble of the solenoid Yes valve itself No Correct the connection Yes Trouble of the solenoid valve coil Measure the voltage between CN725 and O GND on the outdoor inverter P C board Does it repeat to go OV and 12VDC at 5 Yes No Replace the inverter P C board 41 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy Electromagnetic noise enters into TV sets or radios No Is the unit earthed gt Earth the unit Yes Is the distance between the antennas and the indoor Yes Extend the distance between unit within 3m or is the the antennas and the indoor distance between the unit or the antennas and the antennas and the outdoor ou
59. ead wires on the inverter P C board See Photo 4 8 Remove the inverter P C board from the inverter assembly 9 Remove the screw fixing the power P C board See Photo 4 10 Disconnect all connectors and lead wires on the power P C board 11 Remove the power P C board from the inverter assembly 4 5 6 7 re wa 3 Removing R V coil 1 Remove the top panel cabinet and service panel Refer to 1 2 Disconnect the power supply and indoor outdoor connecting wire and remove the back panel Refer to 1 3 Remove the inverter assembly Refer to 2 4 Remove the R V coil See Photo 5 4 Removing the discharge temperature thermistor and defrost thermistor 1 Remove the top panel cabinet and service panel Refer to 1 2 Disconnect the power supply and indoor outdoor connecting wire and remove the back panel Refer to 1 3 Remove the inverter assembly Refer to 2 4 Pull out the discharge temperature thermistor from its holder See Photo 5 5 Pull out the defrost thermistor from its holder See Photo 6 Photo 3 Screws of the relay panel Photo 4 Inverter Heat sink P C board Screws of the ground Power P C board Screw of the power P C board Photo 5 R V coil Discharge temperature thermistor 46 www ilmal mp pumput com Mitsubishi ilmal mp
60. eedback signal CN931 CN932 v Make the outdoor unit operate by starting EMERGENCY OPERATION v Check the LED indication on the inverter P C board No Check the corresponding section by Does LED indicate 10 time LED indication flash Yes 10 time flash Y Outdoor fan motor protection Replace the inverter P C board 39 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy When OPERATION INDICATOR lamp flashes ON and OFF in every 0 5 second Outdoor unit doesn t operate 0 How to check mis wiring and serial signal error when outdoor unit does not work Inverter P C board Parts side V LED O n Blinking A Turn OFF inverter controlled lighting equipment Turn OFF the power supply and then turn ON it again Press EMERGENCY OPERATION Switch Reinstall either the unit or the light each other away Attach a filter on receiving section of the indoor unit Is serial signal error indicated 6 minutes later Serial signal error display Turn OFF the power supply Is there rated voltage of 230V AC in the power supply No Yes Turn ON the power supply Y Is there 230V AC between No outdoor terminal block S1 and S2 v Yes
61. ejoJd JO 091 L HYASEVO ZNIN VASEVO ZNW 2 28 HVASZVO ZNN 4ojsiuueui aBessed VASeVO ZnIN 2 28 speeoxe O d 440 spuooes g z 440 spuooes g z y uo Jojsiuueu jo u u A pieoq O d eunjejeduie 5 eunyesedwie u j Use dois yosyr 1009 ul 2 04 speeoxe JOJSIWAY 1SOIJAP U U A 440 5000295 g z pue YOOYD POW LV3H u 207 1ojsiuueu 102 JOOPU ueuM YKIH Ysel 9 51019 JO 49905 9 9 LL 01 O 3140 Y99499 01 jueJeBuje1 u01 99 01d uonoejoJd 440 spuooes qz pue Y99049 2 9L Lspeeoxe 1ojsiuueu aGseyosip ueuMw Jojsiuueu ueijs s jueJeDujeu euun G AosseJduioo 19118AUI 0 MOH 9 9 11 01 440 Spuooes 2 dn ueis 1012euu00 J0sseJduioo 12euuo
62. erature difference on the left side of the chart on next page 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 How to measure the indoor air wet bulb dry bulb temperature difference 1 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 minutes measure temperature and take an average temperature 10 minutes later measure temperature again and check that the temperature does not change m gram O INDOOR UNIT OUTDOOR UNIT 4 ie HE eu
63. ess OPERATE STOP ON OFF button and confirm one beep tone O While pressing both OPERATION SELECT button and TOO COOL button on the remote controller at the same time press RESET button First release RESET button And release the other two buttons since all LCD in operation display section of the remote controller is displayed after 3 seconds ate MITSUBISHI ELECTRIC LEV operates in full opening direction Do you feel the expansion valve vibrate on touching it No Y NOTE After check of LEV do the undermentioned Is LEV properly fixed to the Ne Properly fix the LEV to the operations Cee valve expansion valve 1 Turn OFF the power supply and turn ON it again Yes 2 Press RESET button on the remote Measure each voltage between connector pins controller 4 of CN724 on the inverter P C board 1 Pin PInO Does the resistance of LEV i have the characteristics yes 2 Pin PinD No Replace the Refer to 11 5 3 Pin PinD inverter P C board i 4 Pin Pin y No Is there about 3 5V AC between each NOTE Measure the voltage by an analog tester Replace the LEV Yes Replace the expansion valve 38 www ilmal mpopumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy _____________ Outdoor base gets frozen Check of defrost heater
64. f CN931 Measurement of feedback output Between and Between O and Between and Does the voltage between No Fixed to either 5V or 0V DC each terminal become 5V and 0V DC repeatedly Yes Does the outdoor fan v Replace the outdoor fan motor Inverter does not operate J Check of power supply Disconnect the connector intelligent power module EMERGENCY OPERATION switch CET CN61 between compressor and Turn ON power supply and press Rectify indoor outdoor connecting wire Y Does the left lamp of OPERATION INDICATOR lamp on the indoor unit light up ii Q v Yes Is there voltage 280V 370V DC between DB61 and DB61 on the inverter P C board Refer to 11 7 1 m ilc Check the electric parts in main circuit Yes N Is there voltage 230V AC between the indoor terminal block S1 and S2 Yes Dose LED on the inverter P C board light up or flash Refer to 11 7 1 Yes Ok If flash refer to 11 4 37 No rotate smoothly Yes Outdoor terminal block S3 Indoor outdoor connecting S2 wire 51 Replace the indoor electronic control No P C board No Replace the inverter P C board 280V 370V DC Inverter P C board Solder side www ilmal mp pumput com Mitsubishi ilmal mp
65. indicate an abnormality To make sure check how many times the abnormality indication is flashing on and off before starting service work 2 Before servicing check that the connector and terminal are connected properly 3 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 4 When troubleshooting refer to 11 2 11 3 and 11 4 26 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy 11 2 Failure mode recall function 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 11 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 1 Flow chart of the indoor outdoor unit failure mode recall function Operational procedure button and TOO COOL button on the remote controller at the same time press RESET button First release RESET button The cause of abnormality cannot be found because the abnormality doesn t recur Setting up the failure mode recall function Turn ON the power supply X While pressing both OPERATION SELECT button and TOO COOL button on the remote controller at the same time press RESET butto
66. ing to power supply voltage 2 Measure the voltage by analog type tester 3 During this check LED of inverter P C board flashes 9 times 9 time flash Ld 2 5 second OFF Check of intelligent power module Disconnect the connector CN61 between the compressor and the intelligent power module and measure the resistance ohmmeter indication between the terminals on the intelligent power module lt lt Measurement point gt gt S at 6 points IRS Normal BLK WHT WHT BLK S infinite BLK RED RED BLK WHT RED RED WHT lt lt Judgement gt gt 412 Abnormal Infinite 0 Normal D 0 dozens of O dozens of Abnormal short 2 S 33 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy Check of 11 6 Check of No compressor winding gt Replace the compressor Is the compressor normal ia AME M tion time V No Is the compressor compressor operation time operation time more than Does the compressor operate continuously Yes 10 seconds Yes Check the refrigerant circuit E Check of compressor winding Disconnect the connector CN61 between the compressor and Replace the compressor WHT RED BLK intelligent power module
67. mpressor connector poor contact Abnormal Compressor lock out Abnormal Refrigerant circuit defect etc Normal Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy K When OPERATION INDICATOR lamp flashes 6 time The thermistors in the outdoor unit are abnormal G Check of outdoor thermistors Disconnect the connectors CN641 CN642 and CN643 from the inverter P C board Defrost thermistor RT61 Check the characteristics of each thermistor Measure the resistance O Reconnect the between CN641 connectors CN641 O and CN642 and CN643 Disconnect the connector CN61 Discharge between the temperature thermistor RT62 compressor and intelligent power Measure the module resistance Replace the inverter and O 5 Turn ON the No oes resistance of the Yes ass Supply and Does the unit operate Fin temperature N J J gt EMERGENCY I 10 minutes or more thermistor RT64 ERE eristics OPERATION except RT65 Measure the No switch ves resistance Reconnect the Replace the between CN642 connector or the O and Q thermistor except RT64 connecting wire Ambient In case of RT64 temperature replace thermistor RT65 inverter P C board Since RT64 is combined with the inverter P C board Measure the resistance between CN643 O and Q H Check of R V coil First of all measure the re
68. n First release RESET button And release the other two buttons since all LCD in operation display section of the remote controller is displayed after 3 seconds is displayed after 3 seconds 1 3 1 Press OPERATE STOP ON OFF button of the remote controller the set temperature is displayed With the remote controller headed towards the indoor unit press TOO COOL or TOO WARM button to adjust the set temperature to 24 C 3 1 Regardless of normal or abnormal a short beep is emitted once as the signal is received Does the left lamp of OPERATION INDICATOR lamp No O While pressing both OPERATION SELECT And release the other two buttons since all LCD in operation display section of the remote controller on the indoor unit blink at the interval of 0 5 seconds OFF Indoor unit is normal E Blinks Either indoor or outdoor unit is abnormal There is a possibility that the outdoor unit is abnormal Beep sounds are emitted at the same Confirm the presence of abnormality according to the flow chart of the timing of the blinking of the left lamp of detailed outdoor unit failure mode recall function OPERATION INDICATOR lamp 2 W Yes Judgment of indoor outdoor abnormality Blinks Before blinking does the left lamp of OPERATION INDICATOR lamp stay ON Yes for 3 seconds Stays ON for 3 seconds without beep The outdoor unit is abnormal The
69. o Replace the outdoor motor normal fan motor Yes Disconnect the connector CN771 on the power P C board Disconnect the connector CN61 between compressor and power transistor module Turn ON the power supply and press the Rectify indoor outdoor EMERGENCY OPERATION switch connecting wire Yes Does the left lamp of Is there voltage 230V OPERATION INDICATOR No AC between indoor lamp the indoor unit terminal block S1 and P C board light up S2 Pa Yes Fan 3 minutes after is there Outdoor terminal block motor voltage 230V AC No Replace the between CN771 and gt power P C board Indoor outdoor O on the power P C connecting 52 board wire S1 1 2 3 Yes Replace the CN771 Power P C board outdoor fan motor 36 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy Outdoor fan motor does not operate D Check of outdoor fan motor MUZ GA35VA E1 MUZ GA35VAH m 1 Is the resistance between each terminal of outdoor fan motor No Yes 4 from the inverter Disconnect CN932 P C board Turn ON the power supply Inverter P C board Solder side CN931 CN932 Rotate the outdoor fan slowly by hand and measure the voltage o
70. ompressor is correctly connected Refer to 11 6 How to check inverter compressor ON Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy K 5 5 ll i i 11 5 Trouble criterion of main parts MUZ GA25VA E MUZ GA35VA E MUZ GA25VAH m MUZ GA35VAH m m 1 Part name Check method and criterion Figure TET thermistor Measure the resistance with a tester Part temperature 10 C 40 C Normal Abnormal Ambient temperature 5 55 Open short circuit thermistor RT65 Measure the resistance with a tester Before measurement hold the thermistor with your hands to warm it up Discharge temperature Part temperature 0 C 40 C thermistor RT62 Normal Abnormal 150 kQ 600 kQ Open or short circuit Measure the resistance with a tester Before measurement hold the thermistor with your hands to warm it up Fin temperature Part temperature 0 C 40 C thermistor RT64 Normal Abnormal 30 kQ 180 kO Open or short circuit Measure the resistance between the terminals with a tester Part temperature 20 C 40 C WHT RED BLK Normal Compress
71. on or start up failure protection within 1minute start up Check stop valve Reconnect connector of compressor Refer to 11 6 How to check inverter compressor Refer to 11 6 Check of intelligent power module Outdoor thermistors When discharge temperature thermistor fin temperature thermistor defrost thermistor P C board temperature thermistor or ambient temperature thermistor shorts or opens during compressor running compressor stops Refer to 11 6 Check of outdoor thermistors Outdoor control system When nonvolatile memory data cannot be read properly compressor stops When the left lamp of OPERATION INDICATOR lamp of indoor unit lights up or flashes 7 time Replace inverter P C board 6 time flash 2 5 seconds OFF serial signal When the communication failure between the indoor and outdoor unit for 3 minutes Refer to 11 6 How to check mis wiring and serial signal error 14 time flash 2 5 seconds OFF Outdoor unit Other abnormality When outdoor unit is failure Refer to 11 2 2 Flow chart of the detailed outdoor unit failure mode recall function Outdoor unit stops and restarts 3 minutes later is repeated 2 time flash 2 5 seconds OFF Overcurrent protection When 14A MUZ GA25VA MUZ GA25VAH 24A MUZ GA35VA MUZ GA35VAH current flows into intelligent power module compressor stops and restarts 3 minutes later Check Stop val
72. oor outdoor unit air circulation is short cycled 4 time flash 2 5 seconds OFF Frequency drop by discharge temperature protection When discharge temperature thermistor exceeds 111 C compressor frequency lowers Check refrigerant circuit and refrigerant amount Refer to 11 6 Check of LEV Refer to 11 6 Check of outdoor thermistors Outdoor unit operates 7 time flash 2 5 seconds OFF Low discharge temperature protection When discharge temperature has been 50 C or less for 20 minutes Refer to 11 6 Check of LEV Check refrigerant circuit and refrigerant amount 8 time flash 2 5 seconds OFF PAM protection PAM Pulse Amplitude Modulation When the overcurrent flows into IGBT Insulated Gate Bipolar transistor TR821 or when the bus bar voltage reaches 320V or more PAM stops and restarts This is not malfunction PAM protection will be activated in the following cases Olnstantaneous power voltage drop Short time power failure Ownen the power supply voltage is igh 9 time flash 2 5 seconds OFF Inverter check mode When the connector of compressor is disconnected inverter check mode starts The flashing frequency shows the number of times the LED blinks after every 2 5 second OFF Example When the flashing frequency is 2 0 5 second ON 2 5 second OFF 31 www ilmal mp pumput com Check if the connector of the c
73. or MC MUZ GA25VA MUZ GA35VA Abnormal MUZ GA25VAH MUZ GA35VAH U V pen or uW 1 580 2 030 1 28Q 1 662 short circuit Measure the resistance between the terminals with a tester MUZ GA25VA MUZ GA35VA Part temperature 20 C 40 C MUZ GA25VAH MUZ GA35VAH Outdoor fan motor MF Normal INNER FUSE Color of the lead wire MUZ GA25VA MUZ GA35VA Abnormal Only MUZ GA25VA H MUZ GA25VAH MUZ GA35VAH n 152 CUT OFF WHT BLK 2920 3740 310 410 BLK RED 236 Q 3040 310 410 se ea ea RED WHT 310 410 Measure the resistance between the terminals with a tester Part temperature 20 C 40 C Normal Abnormal R V coil 21S4 MUZ GA25VA MUZ GA35VA MUZ GA25VAH MUZ GA35VAH Open or short circuit 1 26 1 62 1 20 1 55 Measure the resistance with tester Part temperature 20 C 40 C WHT Expansion valve coil LEV Color of the lead wire Normal Abnormal buy N E MUZ GA35VA WHT RED SRN MUZ GA35VAH RED ORN 380 500 Open YLW BRN short circuit 3 BRN BLU m m Measure the resistance with a tester Part temperature 20 C 40 C Defrost heater H Normal Abnormal 333 Q 428 Q Open or short circuit Solenoid valve coil Measure the resistance with a tester 21R1 Part temperature 20 C 40 C MUZ GA25VA Normal Abnormal MUZ GA25VAH 1 220 Q 1 580 Q Open or short circuit 32 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J
74. ou 440 spuooes oz o jouueo uano eseud uoee 10sseJduioo ueuM 6 jueuno eseud uoee 10ssa1dw0n JosseJduioo 440 Spuooes 2 440 Spuooes gz 0 MOH g 9 LL 0 Aj euuou aq JeueAu jo Oq ueuw Use eun g 5 5 USE SUI JO 49949 19 LL 01 49J9u seinuiul 02 10 uonoejoud 440 spuooes gz pue Y09049 SS9 10 9 05 u q seu Udy s6eyosip mo USE 01 8 5 sdols 440 spuooes g z 440 spuooes g z pJeoq O d JeueAul eoejdeg peas eq 10uuto ueuMw ysel euun G Aiowaw e ejoAuoN WBISAS 100pIno uun 6 pieoq O d 5 JOLSAU JO 4990 0 9 1 01 JOJOLU UB 80015 dn yejs Joopino Jaye UI 440 spuooes g z JO M099uO D 9 1 OlJ9jeud Seuin e spuooes Qe UIUIM peddois seu uej ueuM uonoejojd uej uonoejoJd ue 100pIno 8 HVASEVD ZNW VASEVO ZNW 2 98 HVASZV D ZNW WASZVD ZNW 2 18 speeoxe JOJO UB Joopino Jojsiuueui 5 JO Jo uono
75. outdoor unit 4 Terminal block for power supply has been added 5 Power P C board has been changed 6 Inverter P C board has been changed 7 Refrigerant circuit has been changed Compressor has been changed KNB092FAAH gt KNB073FDVH Specification and position of muffler have been changed Path of outdoor heat exchanger has been changed 4 way valve and R V coil have been changed Stop valve has been changed 8 Fan motor has been changed AC gt DC 9 Shape of grille has been changed 10 Shape of service panel has been changed 11 Shape of propeller has been changed 12 Quick Clean Kit has been added 13 Symbol on terminal block has been changed to 51 52 53 2 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy ____ _ __________ INFORMATION FOR THE AIR CONDITIONER WITH REFRIGERANT This room air conditioner adopts HFC refrigerant R410A which never destroys the ozone layer Pay particular attention to the following points though the basic installation procedure is same as that for R22 air conditioners O 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 Q 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
76. perature 20 C Wet bulb temperature 15 C Outdoor Dry bulb temperature 7 Wet bulb temperature 6 Refrigerant piping length one way 5m 1 Measured under rated operating frequency x Reference value 7 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy Specifications and rating conditions of main electric parts OUTDOOR UNIT Item MUZ GA25VA 1 MUZ GA25VAH MUZ GA35VA MUZ GA35VAH Current transformer ETA19259BZ Current transformer CT761 CT781 ETQ19Z71AY Smoothing capacitor C63A C63B C63C 6204F 420V Diode module DB61 DB65 D25XB60 Fuse 250V 20A Fuse 250V 3 15A Defrost heater 230V 130W 230V 130W Intelligent power module PS2124 4 A 203 Expansion valve coil CAM MD12ME 12VDG Reactor 10A 23 0mH Current detecting resistor 45mQ 5W 1 element Current detecting resistor 25mQ 5W 100 5W Terminal block 3P Relay G5NB 1a Relay G4A 1A PS Relay G5NB 1a G5NB 1a Relay G5NB 1a R V coil SHF 4 10W5 STF 01AJ503 Solid state relay G3MC 202PL Solenoid valve coil FQ 208 RK Heater protector Open 45 C Open 45 C Outdoor fan motor thermal fuse Open 152 C 8 www ilmal mp pumput com Mits
77. 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 Gauge manifold valve for R410A Refrigerant gas cylinder for R410A with siphon Refrigerant liquid Electronic scale for refrigerant charging 5 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy 2 PART NAMES AND FUNCTIONS MUZ GA25VA E MUZ GA35VA E MUZ GA25VAH m MUZ GA35VAH E OUTDOOR UNIT EN back and side Drain hose Drain outlet ACCESSORIES MUZ GA25VA MUZ GA25VAH MUZ GA35VA MUZ GA35VAH Drain socket 1 Quick clean kit 1 1 6 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy SPECIFICATION Outdoor model MUZ GA25VA MUZ GA25VAH MUZ GA35VA e MUZ GA35VAH LE Function Cooling Heating Cooling Heating Power supply
78. pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy Outdoor unit does not operate at all or stops immediately due to overcurrent K Check of current limiting resistor When the current limiting resistor is open the rush current limiting relay X64 may not work properly Turn ON the power No supply and press Does the current limiting resistor R64A or R64B on the power P C board short out Normal resistance 50 Does LED on the inverter X No Replace the power P C gt EMERGENCY d P C board light up gt E or the inverter P C OPERATION switch of the indoor unit Yes Does the rush current Replace the power P C board limiting relay X64 work Yes properly Normally it Replace the power P C close 1 minutes after board or the compressor outdoor unit power ON No Replace the power P C board Check other electric parts in the main circuit together in the case of the defective current limiting resistor Heating Cooling does not work sufficiently D Check of LEV Expansion valve Turn ON the power supply O While pressing both OPERATION SELECT button and TOO COOL button on the remote controller at the same time press RESET button First release RESET button And release the other two buttons since all LCD in operation display section of the remote controller is displayed after 3 seconds Y With remote controller set toward the indoor unit pr
79. r vacuum pumps 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 gas Specific gravity 0 045 Thickness 8 mm 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 4 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy Flaring work and flare nut Flaring work for R410A pipe differs from that for R22 pipe For details of flaring work refer to Installation manual FLARING WORK Pipe diameter Dimension of flare nut 3 Refrigerant 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
80. rant flow in heating MUZ GA35VA E Unit mm MUZ GA35VAH E OUTDOOR UNIT m Refrigerant pipe 49 52 4 way valve with heat insulator Flared connection Muffler Stop valve with service Pon N Outdoor heat temperatuer exchanger thermistor RT62 d Ambient temperature thermistor RT65 Defrost thermistor RT61 Strainer 100 Flared connection Refrigerant pipe 6 35 with heat insulator Expansion valve Capillary tube 3 0X42 0X240 R V coil heating ON cooling OFF Muffler Stop valve with strainar Refrigerant flow in cooling gt Refrigerant flow in heating 15 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy MAX REFRIGERANT PIPING LENGTH Refrigerant piping i Piping size O D mm Length of connecting pipe m Model Max length m ia JEP A Gas Liguid Indoor unit Outdoor unit MUZ GA25VA MUZ GA25VAH Gas 0 43 MUT SAKU S 20 9 52 6 35 K MUZ GA35VAH MAX HEIGHT DIFFERENCE x Max Height difference 12m Refrigerant Piping Max length A Outdoor unit x Height difference should be within 12m regardless of which unit indoor or outdoor position is high ADDITIONAL REFRIGERANT CHARGE R410A g
81. refrigerant temperature and pressure MPa Gauge 4 0 di R410A 3 0 R22 NOTE 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 Saturated liquid pressure 0 5 30 20 10 0 10 20 30 40 50 60 C 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 R410A tools Can R22 tools be used Description R410A has high pressures beyond the measurement range of existing Gauge manifold gauges Port diameters have been changed to prevent any other refrigerant from being charged into the unit Hose material and cap size have been changed to improve the pressure Charge hose resistance Gas leak detector Dedicated for HFC refrigerant Yes 635 mm and 9 52 mm Torque wrench 12 7 mm Flare tool l a Ye 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 Provided to prevent the back flow of oil This adapter enables you to use adapte
82. sistance of R V coil to check if the coil is defective Refer to 11 5 In case CN721 is not connected or R V coil is open voltage is generated between the terminal pins of the connector although any signal is not being transmitted to R V coil Check if CN721 is connected Unit operates COOL mode even if it is set to HEAT mode Disconnect connector CN61 between Is there 230V AC between CN7210 and Replace Turn ON the power supply and press EN a oo aier power P C board EMERGENCY OPERATION switch power SUpply IS UME twice HEAT mode Yes Replace the 4 way valve CN721 Power P C board Soldered side Unit operates HEAT mode even if it is set to COOL mode Disconnect connector CN61 between STT power Is there 230V AC between 7210 and Vos Turn the power supply and press Oon the power P C board 3 minutes after power P C board i EMERGENCY OPERATION switch once the power supply is turned ON COOL mode No Defective R V coil Defective 4 way valve 35 www ilmal mp pumput com Mitsubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy Outdoor fan motor does not operate D Check of outdoor fan motor MUZ GA25VA 1 MUZ GA25VAH E1 Check the resistance of fan motor Refer to 11 5 Y Is the resistance of fan N
83. t cannot operate properly 2 If the abnormal condition is not deleted from the memory the last abnormal condition is kept memorized 3 2 Blinking pattern when outdoor unit is abnormal Blinking at 0 5 Q5 second OFF a 3 second ON en second interval Blinking at 0 5 2 5 second OFF 3 second ON second interval jp T 4 de ad gt OFF i dt lt gt 4 i 2 i N i a o beep Beeps gt a Repeated cycle 28 No beep Beeps a Repeated cycle Repeated cycle www ilmal mp pumput com J hdytinpalvelu RefGroup Oy rjaa ja ko thuoltaa mp pumpu Mitsubishi ilmal 3 Outdoor unit failure mode table O amp yreuuouqe 19410 440 spuooes g z O d eui eoejdeg einjrej SI O d eui USUM 100pino yun 100pino ulll p no suous Buipuiw 1055 u ueuM Wdl einpoui 1ueBijeiur eui jo 1ndino y u 51000 uoys y ueuM D8198 p SI 10sseJduioo A0sse1duioo 19119AUI JO eseud uedo dl 99u9 0 MOH W 9 LL 01 1949H lu Bill lu 1ueuno HYASEVO ZNW VASEVO 440 spuodas g z 340 Spuooes g z Jojoeuuoo 10ss8Jdujoo 199uuo5 tJ Zni vvz IHVASZVS ZnN WASZV9D ZNW Vr use euln oL uonoejoJd eseud uedo 10SSIIALION uonoejoud jueunoJeAQ eulll Z jeuu
84. tdoor unit unit within 3m Is the distance between the TV sets or radios and the Yes Extend the distance between indoor unit within 1m or is the TV sets or radios and the the distance between the TV indoor unit or the TV sets or sets or radios and the radios and the outdoor unit outdoor unit within 3m E Is there any antennas damage by rust or something coaxial cable damage or poor Yes contact such as loosing of Replace the antennas the connectors or wire Replace the coaxial cable disconnection of wiring of the antennas F Is the indoor outdoor N Yes Extend the distance between connecting wire of the air the indoor outdoor connecting conditioner and the wiring of wire of the air conditioner and the antennas in close the wiring of the antennas Even if all of the above conditions is fulfilled the electromagnetic noise may enter depending on the electric field strength or the installation condition combination of specific conditions such as antennas or wiring Check the followings before asking for service 1 Devices affected by the electromagnetic noise TV sets radios FM AM broadcast shortwave 2 Channel frequency broadcast station affected by the electromagnetic noise 3 Channel frequency broadcast station unaffected by the electromagnetic noise 4 Layout of indoor outdoor unit of the air condioner indoor outdoor wiring grounding wire antennas wiring
85. ubishi ilmal mp pumput huoltaa ja korjaa J hdytinpalvelu RefGroup Oy 4 NOISE CRITERIA CURVES MUZ GA25VA E MUZ GA35VA E MUZ GA25VAH E MUZ GA35VAH E FUNCTION SPL dB A LINE FAN SPEED FUNCTION SPL dB A LINE COOLING 46 High COOLING 47 o HEATING 46 o o Med HEATING 48 o Test conditions Test conditions Cooling Dry bulb temperature 35C Wet bulb temperature 24C Cooling Dry bulb temperature 35C Wet bulb temperature 24C Heating Dry bulb temperature 7C Wet bulb temperature 6C 40 Heating Dry bulb temperature 7C Wet bulb temperature 6 t f 1 t 1 E t t F F 1 E lt ap T T 2pm T lt ots Bp F m m I 80 E 2 80 E I 2 i i 1 N d N e e d E 8 70 3 ING S 70 E a F F jaon i 3 E RO ii lt i i m Td m T IM 9 i i 9 60 i i m il 4 m X T L J NC 60 59 E P r o F T d E i s 50 i i s wa n I 1 o 3 E 4 1 n I T o N I D 40 N ME a 40 T n E he 10 2 i L K
86. ve Reconnect connector of compressor Refer to 11 6 How to check inverter compressor Refer to 11 6 Check of intelligent power module 3 time flash 2 5 seconds OFF Discharge temperature overheat protection When discharge temperature thermistor exceeds 116 C compressor stops Compressor can restart if discharge temperature thermistor reads 100 C or less 3 minutes later Check refrigerant circuit and refrigerant amount Refer to 11 6 Check of LEV 4 time flash 2 5 seconds OFF Fin temperature P C board temperature thermistor overheat protection When temperature of fin temperature thermistor on the heat sink exceeds 82 C MUZ GA25VA MUZ GA25VAH 83 C MUZ GA35VA MUZ GAS35VAH or temperature of P C board temperature thermistor exceeds 81 C MUZ GA25VA MUZ GA25VAH 85 C MUZ GAS35VA MUZ GA35VAH compressor stops and restarts 3 minutes later Check around outdoor unit Check outdoor unit air passage Refer to 11 6 0 Check of outdoor fan motor 5 time flash 2 5 seconds OFF High pressure protection When indoor coil thermistor exceeds 70 C in HEAT mode When the defrost thermistor exceeds 70 C in COOL mode Check refrigerant circuit and refrigerant amount Check stop valve 8 time flash 2 5 seconds OFF Compressor synchronous abnormality When the waveform of compressor current is distorted Reconnect connector of compressor Refer

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