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COMFORT-AIRE A-VFH30QB-1, Service Manual

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COMFORT-AIRE A-VFH30QB-1 Service Manual Download Page 27

Service Manual  -  

VFH-B 30/36/42 Series

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Summary of Contents for A-VFH30QB-1

Page 1: ...Service Manual VFH B Series Inverter Multi Zone Ductless Mini Split A VFH30QB 1 A VFH36QB 1 A VFH42PB 1 www marsdelivers com ...

Page 2: ......

Page 3: ...nd Control 17 Part ė Installation and Maintenance 19 7 Safety Precautions 19 8 Installation Manual 21 3UHSDUDWLRQ EHIRUH QVWDOODWLRQ 22 QVWDOODWLRQ QVWUXFWLRQ 24 9 Troubleshooting 29 0DOIXQFWLRQ QGLFDWRU 30 0DOIXQFWLRQ KHFNLQJ DQG OLPLQDWLRQ 31 0DLQWHQDQFH 0HWKRG IRU 1RUPDO 0DOIXQFWLRQ 35 10 Exploded View and Parts List 39 11 Removal Procedure 43 Appendix 55 SSHQGL 5HIHUHQFH 6KHHW RI HOVLXV DQG DK...

Page 4: ...Service Manual VFH B 30 36 42 Series 4 1 Summary Part Ė Technical Information Outdoor Unit 9 4 9 4 9 4 ...

Page 5: ...7 7KURWWOLQJ 0HWKRG OHFWURQ H SDQVLRQ YDOYH RROLQJ 2SHUDWLRQ PELHQW 7HPSHUDWXUH 5DQJH O 0 118 HDWLQJ 2SHUDWLRQ PELHQW 7HPSHUDWXUH 5DQJH O 4 86 RQGHQVHU 0DWHULDO OXPLQXP LQ FRSSHU 7XEH RQGHQVHU 3LSH LDPHWHU LQFK ĭ 5RZV LQ DS PP LQFK 2 1 16 RLO OHQJWK O KHLJKW FRLO ZLGWK LQFK DQ 0RWRU 6SHHG USP 0 USP 630 2XWSXW RI DQ 0RWRU W 60 DQ 0RWRU 5 A DQ 0RWRU DSDFLWRU ȝ LU ORZ 9ROXPH RI 2XWGRRU 8QLW 0 2330 DQ...

Page 6: ...WHU LDPHWHU RI LTXLG 3LSH LQFK 1 4 2XWHU LDPHWHU RI DV 3LSH LQFK 3 8 2XWHU LDPHWHU RI DV 3LSH LQFK 3 8 2XWHU LDPHWHU RI DV 3LSH LQFK 3 8 2XWHU LDPHWHU RI DV 3LSH LQFK 3 8 RQQHFWLRQ 3LSH 0D HLJKW LVWDQFH LQGRRU DQG LQGRRU IW 24 6 RQQHFWLRQ 3LSH 0D HLJKW LVWDQFH LQGRRU DQG RXWGRRU DQG LQGRRU XS IW 49 2 RQQHFWLRQ 3LSH 0D HLJKW LVWDQFH LQGRRU DQG RXWGRRU DQG RXWGRRU XS IW 49 2 0D HTXLYDOHQW FRQQHFWLRQ...

Page 7: ...RWWOLQJ 0HWKRG OHFWURQ H SDQVLRQ YDOYH OHFWURQ H SDQVLRQ YDOYH RROLQJ 2SHUDWLRQ PELHQW 7HPSHUDWXUH 5DQJH O 0 118 0 118 HDWLQJ 2SHUDWLRQ PELHQW 7HPSHUDWXUH 5DQJH O 4 86 4 86 RQGHQVHU 0DWHULDO OXPLQXP LQ FRSSHU 7XEH OXPLQXP LQ FRSSHU 7XEH RQGHQVHU 3LSH LDPHWHU LQFK ĭ ĭ 5RZV LQ DS PP LQFK 2 1 16 2 1 16 RLO OHQJWK O KHLJKW FRLO ZLGWK LQFK DQ 0RWRU 6SHHG USP 0 USP 850 850 2XWSXW RI DQ 0RWRU W 140 140 D...

Page 8: ...HWHU RI LTXLG 3LSH LQFK 1 4 1 4 2XWHU LDPHWHU RI LTXLG 3LSH LQFK 1 4 1 4 2XWHU LDPHWHU RI DV 3LSH LQFK 3 8 3 8 2XWHU LDPHWHU RI DV 3LSH LQFK 3 8 3 8 2XWHU LDPHWHU RI DV 3LSH LQFK 3 8 3 8 2XWHU LDPHWHU RI DV 3LSH LQFK 3 8 3 8 2XWHU LDPHWHU RI DV 3LSH LQFK 3 8 3 8 RQQHFWLRQ 3LSH 0D HLJKW LVWDQFH LQGRRU DQG LQGRRU IW 24 6 24 6 RQQHFWLRQ 3LSH 0D HLJKW LVWDQFH LQGRRU DQG RXWGRRU DQG LQGRRU XS IW 49 2 4...

Page 9: ...FLW 6400 6380 7950 8550 10650 11080 7RWDO SRZHU LQSXW 3150 2500 3130 3200 3400 2930 6HQVLWLYH FDSDFLW 7RWDO FDSDFLW 100 100 100 100 100 100 RROLQJ HDWOLQJ 2 2 Cooling Capacity Tables 5220 02 211 7 9 1 225 81 7 7 1 î 7 1 î 287 225 7 03 5 785 5 1 225 7 03 5 785 20O C 68O 25O C 77O 30O C 86O 35O C 95O 40O C 104O 45O C 113O 21O C 70O 15O C 59O 7RWDO FDSDFLW 7186 8391 9044 8474 6697 5228 6HQVLWLYH FDSD...

Page 10: ...FDSDFLW 8460 8800 9360 10690 10580 11300 7RWDO SRZHU LQSXW 3785 3600 3410 3580 2780 2420 6HQVLWLYH FDSDFLW 7RWDO FDSDFLW 100 100 100 100 100 100 RROLQJ HDWOLQJ 5220 02 211 7 9 1 225 81 7 7 1 î 287 225 7 03 5 785 5 1 225 7 03 5 785 20O C 68O 25O C 77O 30O C 86O 35O C 95O 40O C 104O 45O C 113O 21O C 70O 15O C 59O 7RWDO FDSDFLW 9560 10300 10400 9430 8045 6900 6HQVLWLYH FDSDFLW 8662 8880 8900 8435 775...

Page 11: ...100 10820 11400 6HQVLWLYH FDSDFLW 8230 8960 8750 12100 10820 11400 7RWDO SRZHU LQSXW 3760 3690 3400 3910 2820 2420 6HQVLWLYH FDSDFLW 7RWDO FDSDFLW 100 0 100 0 100 0 100 0 100 0 100 0 5220 02 211 7 9 1 225 81 7 7 1 î 7 1 î 287 225 7 03 5 785 5 1 225 7 03 5 785 20O C 68O 25O C 77O 30O C 86O 35O C 95O 40O C 104O 45O C 113O 21O C 70O 15O C 59O 7RWDO FDSDFLW 9675 10320 10700 9900 8640 6800 6HQVLWLYH FD...

Page 12: ...al VFH B 30 36 42 Series 12 A VFH36QB 1 A VFH42PB 1 A VFH30QB 1 8QLW LQFK 40 42 1 2 24 13 16 17 21 64 14 1 4 14 51 64 43 27 64 38 27 64 36 7 32 17 21 64 14 37 64 31 24 1523 32 8QLW LQFK 3 Outline Dimension Diagram ...

Page 13: ... go to the heat exchanger of the outdoor unit to exchange heat with the outdoor air and then is turned into refrigerant liquid After passing through the throttling device the temperature and pressure of the refrigerant liquid will further decrease and then go the main valve After that it will be divided and go to the heat exchanger of each indoor unit to exchange heat with the air which needs to b...

Page 14: ...1 0 2 1 7 03 6 1625 287 7 3 3 27720 1 7 5 9 9 92 3527 7 121 2035 6625 29 5 2 1 7 3 3 7 03 6 1625 1 02725 6 7 35 6685 2035 6625 287 225 78 6 1625 7 03 6 1625 287 225 0 1 7 5 1 0 1 2 5 7 03 6 1625 6 5 3 16 21 9 9 5 1 2 5 7521 81 7 1 225 5 725 1 7 5 2035 6625 9 9 7 7 7 7 1 1 57 57 57 57 7Ƚ 7 9 9 3 57 9 9 9 8 1 8 1 8 1 8 1 1 8 5 1 1 1 3 3 7 9 9 9 9 1 0 7 3 33 1 8 5 57 57 57 57 57 57 57 57 6 7 57 57 57...

Page 15: ...5 7521 81 7 1 225 5 725 1 7 5 2035 6625 1 57 57 57 57 57 57 1 57 57 57 57 57 57 57 57 6 7 9 9 7 7 7 7 7 1 1 1 1 1 1 7 57 57 57 57 7Ƚ 7 9 9 3 57 9 9 9 9 1 8 8 1 8 1 8 1 8 1 8 1 1 8 5 2 1 2 2 5 8 5 8 5 1 3 3 8 1 1 1 1 203 3 33 7 1 1 3 3 0 6 7 7 9 9 9 9 9 0 2 1 208 1 9 8 9 29 203 1 3 6 0 2 1 0 7 203 20321 17 326 7 21 5 0 7 7 7 7 3 7 LURQ VKHOO PRWRU RQO DSSOLHV WR WKH 1RWH 0RWRU JURXQG 9 4 9 3 7KHVH ...

Page 16: ...RI RYHUORDG SURWHFWRU 7 33 WHUPLQDOV RI KLJK SUHVVXUH VZLWFK 8 9 9 WHUPLQDOV RI 9 HOHFWURQLF H SDQVLRQ YDOYH 9 1 1 WHUPLQDOV RI WHPSHUDWXUH VHQVRU 10 208 WHUPLQDOV RI FRPPXQLFDWLRQ 11 2 1 WHUPLQDOV RI IDQ 12 WHUPLQDOV RI ZD YDOYH 13 7 WHUPLQDOV RI FRPSUHVVRU EDQG KHDWHU 14 7 WHUPLQDOV RI ERWWRP EDQG KHDWHU 15 0DLQ UHOD 16 FKRNH 1 2 3 4 5 6 7 8 10 9 11 13 14 12 15 16 5 2 PCB Printed Diagram ...

Page 17: ...RRU XQLWV VDWLVI WKH VWRS FRQGLWLRQ WKH FRPSUHVVRU VWRSV DQG WKH RXWGRRU IDQ VWRSV DIWHU PLQ F I RQO SDUW RI WKH LQGRRU XQLWV VDWLVI WKH VWRS FRQGLWLRQ WKH FRPSUHVVRU GHFUHDVH WKH IUHTXHQF LPPHGLDWHO DQG RSHUDWHV DFFRUGLQJ WR GHPDQG G KDQJH HDWLQJ PRGH WR FRROLQJ PRGH RU GHKXPLGL FDWLRQ PRGH WKH ZKROH V VWHP ZLOO VWRS UVW WKHQ UHVWDUW XQGHU WKH UHTXLUHG PRGH H HIURVWLQJ IXQFWLRQ KHQ WKH GHIURVWLQJ...

Page 18: ...WHP SUHVVXUH KLJKHU WKDQ OLPLW WKHQ WKH KLJK SUHVVXUH VZLWFK FXWV RII WKH V VWHP ZLOO VWRS E I KLJK SUHVVXUH SURWHFWLRQ LV GHWHFWHG system power must be manually turned off and back on In this case only by cutting off the power and then re energizing can the compressor restart 6 Compressor overload protection 1R PDWWHU WKH FRPSUHVVRU LV RQ RU RII ZKHQ WKH FRPSUHVVRU RYHUORDG VZLWFK LV GHWHFWHG DFW...

Page 19: ...HUDWLRQ PLJKW OHDG WR KXPDQ FDVXDOW RU VHYHU LQMXU WHPV QHHG WR EH IROORZHG W LQGLFDWHV WKDW LPSURSHU RSHUDWLRQ PLJKW OHDG WR SHUVRQDO LQMXU RU SURSHUW GDPDJH 7 Safety Precautions Installation should be conducted by dealer or qualified personnel Please do not attempt to install the unit by yourself Improper handling may result in water leakage electric shock or fire disaster etc Make sure the unit...

Page 20: ...tape 4 Electroprobe 7 Electronic leakage detector 10 Pipe pliers pipe cutter 2 Screw driver 5 Universal meter 8 Vacuum pump 11 Pipe expander pipe bender 3 Impact drill drill head electric drill 6 Torque wrench open end wrench inner hexagon spanner 9 Pressure meter 12 Soldering appliance refrigerant container ...

Page 21: ...the bound pipes pass through the wall hole and then connect outdoor unit Neaten the pipes Vacuum pumping and leakage detection Check after installation and test operation Finish installation Note this flow is only for reference please find the more detailed installation steps in this section Select outdoor unit installation location Install the support of outdoor unit select it according to the ac...

Page 22: ...OORZHG W LQGLFDWHV WKDW LPSURSHU RSHUDWLRQ PLJKW OHDG WR SHUVRQDO LQMXU RU SURSHUW GDPDJH QVWDOO WKH XQLW DW D SODFH that LV DGHTXate WR ZLWKVWDQG WKH ZHLJKW RI WKH XQLW DQG PDNH VXUH WKH XQLW ZiOl QRW VKDNH RU IDOO RII 7U WR NHHS WKH XQLW DZD IURP FRPEXVWLEOH ÀDPPDEOH DQG FRUURVLYH JDV RU H KDXVW JDV HDYH VRPH VSDFH IRU KHDW H FKDQJLQJ DQG VHUYLFLQJ VR DV WR JXDUDQWHH QRUPDO RSHUDWLRQ 1HYHU DOORZ...

Page 23: ...f pipe 0 5 1 0 mm bearing pressure 3 0MPa Ĺ The longer the connection pipe is the more cooling and heating capacity will decrease 19 2 3 39 3 8 78 3 4 19 2 3 19 2 3 19 2 3 78 3 4 unit inch M odel Connecting Pipe inch M ax Pipe length ft M ax Height Difference betw een Indoor Unit and Outdoor Unit ft Liquid Gas A VFH30QB 1 Ф 1 4 3 8 3 8 3 8 1 4 1 4 Φ 229 6 A VFH36QB 1 Ф Ф 246 1 246 1 A VFH42PB 1 Ф ...

Page 24: ...utdoor unit 9 4 2XWOLQH GLPHQVLRQ DQG 0RXQWLQJ KROHV 9 64 9 3 2XWOLQH GLPHQVLRQ DQG 0RXQWLQJ KROHV 31 13 25 32 3 21 64 14 39 64 15 23 32 16 51 64 11 3 4 24 38 27 64 6 7 64 43 27 64 17 23 32 3 37 64 11 7 64 17 21 64 14 13 64 42 1 2 24 5 6 7 1 2 LJ LJ 8 2 Installation Instruction ...

Page 25: ...WKH MRLQWV with insulation provided WKHQ WLJKWHQ WKHP ZLWK WKH SODVWLF WDSH CAUTION ķ During the connection of the indoor unit and the refrigerant pipe never pull any joints of the indoor unit by force otherwise the capillary pipe or other pipe may crack which will result in leakage ĸ The refrigerant pipe should be supported by brackets Do not let the unit withstand the weight of the lineset Ĺ If ...

Page 26: ... A VFH36QB 1 A VFH36QB 1 131 2ft 131 2ft Allowable Value Fitting pipe Total length actual length of fitting pipe all indoor units length of farthest fitting pipe ft A VFH30QB 1 A VFH36QB 1 A VFH42QB 1 Outdoor unit at upper Outdoor unit at lower Height difference between indoor units ft Height difference between outdoor unit and indoor unit b a e d c L4 L3 L2 L5 L1 Outdoor uni t Height difference b...

Page 27: ...RQ WKH ZDOO ZLWK VHDOLQJ PDWHULDO WR SUHYHQW ZLQG DQG UDLQ FRPLQJ LQWR WKH URRP 6XSSRUW DQG SURWHFWLRQ IRU SLSHOLQH 6XSSRUW VKRXOG EH PDGH IRU KDQJLQJ FRQQHFWLRQ SLSH LVWDQFH EHWZHHQ HDFK VXSSRUW FDQ QRW EH RYHU 3ft 8 2 3 Air Purging and Refrigerant Charge Air purging 7KH UHIULJHUDQW KDV EHHQ FKDUJHG LQWR WKH RXWGRRU XQLW EHIRUH VKLSPHQW ZKLOH DGGLWLRQDO UHIULJHUDQW VWLOO may QHHG to EH FKDUJHG GX...

Page 28: ...VR WKLV PDQXDO Ɣ If damaged WKH SRZHU FRUG VKRXOG EH UHSODFHG with a comparable cord Ɣ 7KH grounding VKRXOG EH UHOLDEOH DQG WKH ground ZLUH VKRXOG EH FRQQHFWHG WR a GHGLFDWHG GHYLFH RI WKH EXLOGLQJ E WKH WHFKQLFLDQ TKH disconnect switch coupled with the leakage current protection switch must be equipped which is of enough capacity and of both magnetic and WKHUPDO WULSSLQJ IXQFWLRQV LQ FDVH RI a VK...

Page 29: ...KH HOHFWULFDO ZLULQJ ZRUN HQVXUH WKH ZLUH EHWZHHQ WKH FRQQHFWLRQ SODFH DQG WKH HG SODFH KDV some slack ĸ 7KH FRQQHFWLRQ SLSLQJ DQG FRQQHFWLRQ OLQH RI HDFK LQGRRU XQLW VKRXOG FRQQHFW firmly DFFRUGLQJ WR WKH LQVWUXFWLRQ Ĺ 7KH HOHFWULF LQVWDOODWLRQ VKRXOG EH FDUULHG RXW E a WHFKQLFLDQ DV LQVWUXFWHG E WKH ORFDO ODZV UHJXODWLRQV DQG DOVR WKLV PDQXDO ĺ 7KH LQVWDOODWLRQ ORFDWLRQ VKRXOG EH GU DQG not H SR...

Page 30: ...OIXQFWLRQ ODVK WLPHV KDXVW VHQVRU PDOIXQFWLRQ ODVK WLPHV WWDLQ WKH WHPSHUDWXUH RI VZLWFK RQ ODVK WLPHV UHTXHQF OLPLW SRZHU ODVK WLPHV 2XWGRRU IDQ PDOIXQFWLRQ ODVK WLPHV UHTXHQF OLPLW 3 PRGXOH WHPSHUDWXUH ODVK WLPHV 3 PRGXOH VHQVRU PDOIXQFWLRQ ODVK WLPHV R LTXLG SLSH WHPSHUDWXUH VHQVRU PDOIXQFWLRQ RI ODVK WLPHV DV SLSH WHPSHUDWXUH VHQVRU PDOIXQFWLRQ RI ODVK WLPHV LTXLG SLSH WHPSHUDWXUH VHQVRU PDOIX...

Page 31: ...ly N N N Connected correctly Reconnect according to the wiring diagram Y N Y De energize change the communication wire of the well communicated indoor unit and malfunction indoor unit then energize the unit and wait for 3min The malfunction indoor unit resumes normal Replace outdoor mainboard Replace the mainboard of the malfunction indoor unit Malfunction display E6 Communication malfunction 9 2 ...

Page 32: ...rrectly Connected correctly Reconnect according to the wiring diagram Connected correctly Reconnect according to the wiring diagram De energize check if the connection wire between the outdoor mainboard and the filter board according to the wiring diagram The connection wire is broken Replace the connection wire There is power input Replace the filter board of the outdoor unit Resume communication...

Page 33: ...he outdoor unit mainboard Replace pressure switch Check if operation mode of indoor unit is properly set N N Y Y Y Y Check if gas valve and liquid valve are completely open Refer to Instruction Manual of indoor unit Check if the panel of outdoor unit is firmly closed N N Completely open the valve Close the panel Check if the air return and supply from heat exchanger of indoor unit and outdoor unit...

Page 34: ...evant discharge temperature sensor Discharge temperature protection Malfunction display E5 Compressor Overheat N Y Y Y Y Y N N N Check if compressor s connection line is properly connected Adjust compressor s connection line Check if current value is higher than the protector s setting Replace overcurrent protector If unit s high pressure is normal l Refer to high pressure protection If voltage is...

Page 35: ...eck if the plug of the temperature sensor is correctly connected with socket on the mainboard N Removethe sensor to check if the resistance value is ok N Y Y Y Check the direction of the plug and socket Replace temperature sensor Failure of condenser Temp sensor Replace main board of the indoor unit ...

Page 36: ...ance value is ok Replace mainboard of the indoor uint Replace temperature sensor Check the direction of the plug and socket Malfunction display F5 Failure of Exhaust Temp Sensor N N Y Y Y Failure of Exhaust Temp sensor Check if the plug of the temperature sensor is correctly connected with socket on the mainboard Remove the sensor to check if the resistance value is ok Replace mainboard of the ind...

Page 37: ... 0DOIXQFWLRQ RI FRPSUHVVRU RPSUHVVRU FDQ W RSHUDWH 5HIHU WR SRLQW RI PDLQWHQDQFH PHWKRG IRU GHWDLOV 9 3 Maintenance Method for Normal Malfunction 1 Air Conditioner Can t be Started Up 2 Poor Cooling Heating for Air Conditioner 3 Horizontal Louver Can t Swing 3RVVLEOH DXVHV LVFULPLQDWLQJ 0HWKRG LU FRQGLWLRQHU 6WDWXV 7URXEOHVKRRWLQJ 1R SRZHU VXSSO RU SRRU FRQQHFWLRQ IRU SRZHU SOXJ IWHU HQHUJL DWLRQ ...

Page 38: ...NLQJ IURP GUDLQ SLSH 5HSODFH GUDLQ SLSH UDSSLQJ LV QRW WLJKW DWHU OHDNLQJ IURP WKH SLSH FRQQHFWLRQ SODFH RI LQGRRU XQLW UDS LW DJDLQ DQG EXQGOH LW WLJKWO 5 Compressor Can t Operate 3RVVLEOH FDXVHV LVFULPLQDWLQJ PHWKRG DLU FRQGLWLRQHU VWDWXV 7URXEOHVKRRWLQJ URQJ ZLUH FRQQHFWLRQ RU SRRU FRQQHFWLRQ KHFN WKH ZLULQJ VWDWXV DFFRUGLQJ WR FLUFXLW GLDJUDP RQQHFW ZLUHV DFFRUGLQJ WR ZLULQJ GLDJUDP WR PDNH VX...

Page 39: ... 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 10 Exploded View and Parts List 7KH FRPSRQHQW SLFWXUH LV RQO IRU UHIHUHQFH SOHDVH UHIHU WR WKH DFWXDO SURGXFW ...

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Page 41: ...B 1 A VFH42PB 1 55 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 7KH FRPSRQHQW SLFWXUH LV RQO IRU UHIHUHQFH SOHDVH UHIHU WR WKH DFWXDO SURGXFW ...

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