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Mitsubishi Electric MXZ-4C36NAHZ, Technical & Service Manual

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Mitsubishi Electric MXZ-4C36NAHZ Technical & Service Manual Download Page 142

10

DISASSEMBLY PROCEDURE

10-1. OUTDOOR UNIT

MXZ-4C36NAHZ(-U1) MXZ-5C42NAHZ(-U1) 

 

MXZ-8C48NAHZ(-U1) 

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OPERATING PROCEDURE

PHOTOS/FIGURES

1. 

Removing the service panel and top panel

 

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Photo 1

2.  Removing the fan motor (MF1, MF2)

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Note:   Tighten the propeller fan with a torque of 5.7 ± 0.3 N·m. 

[4.2 ± 0.2 ft = lbs]

Photo 2

Photo 3

3.  Removing the electrical parts box

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Note:  The terminal cover can be easily removed by using 

a blade of flathead screwdriver.

Figure 1

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Summary of Contents for MXZ-4C36NAHZ

Page 1: ...0BC PAC MKA51BC PAC MKA31BC HFC utilized R410A Februray 2018 Notes 7KLV VHUYLFH PDQXDO GHVFULEHV WHFKQLFDO GDWD RI RXWGRRU XQLW DQG EUDQFK ER V IRU LQGRRU XQLWV UHIHU WR LWV VHUYLFH PDQXDO 5R 6 FRPSOLDQW SURGXFWV KDYH PDUN RQ WKH VSHF QDPH SODWH Model Name Outdoor unit MXZ 4C36NAHZ MXZ 5C42NAHZ MXZ 8C48NAHZ MXZ 8C48NA MXZ 8C60NA Branch box PAC MKA50BC PAC MKA30BC PAC MKA51BC PAC MKA31BC PARTS CATA...

Page 2: ...36NAHZ U1 MXZ 5C42NAHZ MXZ 5C42NAHZ U1 MXZ 8C48NAHZ MXZ 8C48NAHZ U1 MXZ 8C48NA MXZ 8C48NA U1 Service ref have been changed as follows 7KH VKDSH RI SLSLQJ DURXQG D VWRS YDOYH 7 KDV EHHQ FKDQJHG 7KH VKDSH RI YDOYH EHG KDV EHHQ FKDQJHG OCH573E ...

Page 3: ...on of refrigerant oil etc If large amount of mineral oil enters that can cause deterio ration of refrigerant oil etc Make sure that the inside and outside of refrige rant piping is clean and it has no contaminants such as sulfur oxides dirt shaving particles etc which are hazard to refrigerant cycle In addition use pipes with specified thickness The refrigerant oil applied to flare and flange conn...

Page 4: ...nt in the air 3 After completing service charge the cycle with specified amount of refrigerant 4 If moisture or foreign matter might have entered the refrigerant piping during service ensure to remove them 1R 7RRO QDPH 6SHFLILFDWLRQV DXJH PDQLIROG Â2QO IRU 5 Â8VH WKH H LVWLQJ ILWWLQJ VSHFLILFDWLRQV 81 8VH KLJK WHQVLRQ VLGH SUHVVXUH RI 36 03D RU RYHU KDUJH KRVH Â2QO IRU 5 Â8VH SUHVVXUH SHUIRUPDQFH ...

Page 5: ... 1 3 64 26 0 1 9 64 29 0 17 0 22 0 24 0 27 0 36 0 Nominal dimensions in Flare nut dimensions Outside diameter mm Dimension B Unit in mm R410A R22 Gauge manifold Charge hose Gas leak detector Refrigerant recovery equipment Refrigerant cylinder Applied oil Safety charger Charge valve Vacuum pump Flare tool Bender Pipe cutter Welder and nitrogen gas cylinder Refrigerant charging scale Vacuum gauge or...

Page 6: ...LQJ EUDQFK ER 1R QHHG Q FDVH RI XVLQJ EUDQFK ER HV 0RGHO QDPH RQQHFWLRQ PHWKRG 06 5 ÀDUH 06 5 EUD LQJ UDQFK ER 3 0 3 0 3 0 3 0 1XPEHU RI EUDQFKHV QGRRU XQLW WKDW FDQ EH FRQQHFWHG EUDQFKHV 0 XQLWV EUDQFKHV 0 XQLWV 1RWH PD LPXP RI EUDQFK ER HV FDQ EH FRQQHFWHG WR RXWGRRU XQLW Ɣ MXZ 8C60NA RU HDFK FRQQHFWHG EUDQFK ER 1XPEHU RI FRQQHFWLQJ PXOWL SRVLWLRQ XQLW RQVWUDLQWV Q LQGRRU XQLWV RWKHU WKDQ PXOWL ...

Page 7: ...QLWV WR DFKLHYH WKH RSWLPXP FRQWURO 2 2 1 System example 2 2 2 Method for identifying Ŷ 2XWGRRU XQLW Development No A B etc Power supply N Single phase 208 230 V 60Hz Multi type heat pump inverter outdoor unit Indicates equivalent to rated cooling capacity kBTU h Number of connectable indoor units MAX Control and refrigerant A New A control and R410A Model type M X Z 4 8 8 C N A P A C MK A 5 1 B C...

Page 8: ...XQLWV Ŷ 9HULILFDWLRQ Q FDVH RI 0 1 7KH UDWHG FDSDFLW VKRXOG EH GHWHUPLQHG E REVHUYLQJ WKH WDEOH EHORZ 7KH XQLW V TXDQWLWLHV DUH OLPLWHG WR WR XQLWV RU WKH QH W VWHS PDNH VXUH WKDW WKH VHOHFWHG WRWDO UDWHG FDSDFLW LV LQ D UDQJH RI WR N 78 K 7KH WRWDO LQGRRU XQLW FDSDFLW VKRXOG EH ZLWKLQ WKH RXWGRRU XQLWV N 78 K LV SUHIHUUHG RPELQDWLRQ RI H FHVVLYH LQGRRU XQLWV DQG DQ RXWGRRU XQLW PD UHGXFH WKH FDSD...

Page 9: ...ction size of indoor unit use optional different diameter deformed joints to the branch box side Connect deformed joint directly to the branch box side A B 3 4 inch 19 05 mm MXZ 8C60NA only ODUH FRQQHFWLRQ HPSOR HG 1R EUD LQJ A B B B B B Branch box Ŷ Q FDVH RI XVLQJ EUDQFK ER ODUH FRQQHFWLRQ HPSOR HG 1R EUD LQJ A A A B B B B B 2 branches pipe joint optional parts Branch box 1 Branch box 2 Ŷ Q FDVH...

Page 10: ...HU HDW H FKDQJHU 3ODWH Q FRLO DQ DQ GULYH î 1R 3URSHOOHU IDQ î DQ PRWRU RXWSXW N IRU WKH PRGHOV ZLWK 8 LUÀRZ Pñ PLQ 0 LPHQVLRQV î î LQ PP LQ PP LQ PP HLJKW OE NJ 5HIULJHUDQW 5 KDUJH OE NJ OEV R 2LO 0RGHO R WKHUHDO RLO 9 6 3URWHFWLRQ GH YLFHV LJK SUHVVXUH SURWHFWLRQ 3 VZLWFK RPSUHVVRU SURWHFWLRQ RPSUHVVRU WKHUPR 2YHUFXUUHQW GHWHFWLRQ DQ PRWRU SURWHFWLRQ 2YHUKHDWLQJ 9ROWDJH SURWHFWLRQ XDUDQWHHG RSHU...

Page 11: ...PLQ 0 LPHQVLRQV î î LQFK PP LQFK PP LQFK PP HLJKW OE NJ 5HIULJHUDQW 5 KDUJH OE NJ OEV R 2LO 0RGHO R WKHUHDO RLO 9 6 3URWHFWLRQ GHYLFHV LJK SUHVVXUH SURWHFWLRQ 3 VZLWFK RPSUHVVRU SURWHFWLRQ RPSUHVVRU WKHUPR 2YHU FXUUHQW GHWHFWLRQ DQ PRWRU SURWHFWLRQ 2YHUKHDWLQJ 9ROWDJH SURWHFWLRQ XDUDQWHHG RSHUDWLRQ UDQJH FRRO WR í WR KHDW í WR í WR í WR í WR REFRIGERANT PIPING 7RWDO 3LSLQJ OHQJWK 0D IW P DUWKHVW I...

Page 12: ... OE NJ 5HIULJHUDQW 5 KDUJH OE NJ OEV R 2LO 0RGHO R WKHUHDO RLO 9 6 3URWHFWLRQ GH YLFHV LJK SUHVVXUH SURWHFWLRQ 3 VZLWFK RPSUHVVRU SURWHFWLRQ RPSUHVVRU WKHUPR 2YHUFXUUHQW GHWHFWLRQ DQ PRWRU SURWHFWLRQ 2YHUKHDWLQJ 9ROWDJH SURWHFWLRQ XDUDQWHHG RSHUDWLRQ UDQJH FRRO WR í WR KHDW í WR í WR REFRIGERANT PIPING 7RWDO 3LSLQJ OHQJWK 0D IW P DUWKHVW IW P 0D HLJKW GLIIHUHQFH IW P KDUJHOHVV OHQJWK IW P 3LSLQJ G...

Page 13: ...A50BC PAC MKA51BC PAC MKA30BC PAC MKA31BC Single phase 208 230 V 60 Hz 0 003 0 05 Galvanized sheets 17 23 32 450 11 1 32 280 6 11 16 170 3 8 9 52 5 8 15 88 Model name 3 2 BRANCH BOX PAC MKA50BC PAC MKA51BC PAC MKA30BC PAC MKA31BC 7KH SLSLQJ FRQQHFWLRQ VL H GLIIHUV DFFRUGLQJ WR WKH W SH DQG FDSDFLW RI LQGRRU XQLWV 0DWFK WKH SLSLQJ FRQQHFWLRQ VL H IRU LQGRRU DQG EUDQFK ER I WKH SLSLQJ FRQQHFWLRQ VL ...

Page 14: ...Units Want to change to smaller indoor units Does it fulfill the load of each room CTo 7i L 7o Maximum Capacity CTmax CTi L 7i Need to select smaller outdoor unit Does it fulfill the load of each room Outdoor Unit Input Rated Outdoor Unit Input cDYH Determine the load L and the Indoor Outdoor Temperature n Total Number of Indoor Units k Indoor Unit Number Yes No No No No Yes No No Yes Yes Capacity...

Page 15: ...Yes Yes AYHUDJH QGRRU WHPS SRZHU LQSXW RHI cDYH Fk Mk 0k n k 1 n k 1 7KH SXUSRVH RI WKLV IORZ FKDUW LV WR VHOHFW WKH LQGRRU DQG RXWGRRU XQLWV RU RWKHU SXUSRVHV WKLV IORZ FKDUW LV LQWHQGHG RQO for reference ck 2XWGRRU XQLW SRZHU LQSXW FRHfficient of k indoor unit room temp Refer to 4 2 Mk 1XPEHU SDUW RI WKH N LQGRRU XQLW PRGHO H J 3 ĺ AYHUDJH QGRRU WHPS SRZHU LQSXW RHI cDYH cDYH Fk Mk 0k n k 1 n k ...

Page 16: ...DFLW 7L CTo 2XWGRRU 5DWLQJ î 2XWGRRU HVLJQ 7HPSHUDWXUH RUUHFWLRQ î 3LSLQJ HQJWK RUUHFWLRQ î î N 78 K 6 Determination of Maximum System Capacity RPSDULVRQ RI DSDFLW EHWZHHQ 7RWDO QGRRU 8QLWV DSDFLW 7L DQG 7RWDO 2XWGRRU 8QLW DSDFLW 7R CTi 31 6 CTo 32 8 thus select CTi CTx CTi N 78 K 7 Comparison with Essential Load Against the essential load 29 6 kBTU h the maximum system capacity is 31 6 kBTU h Pro...

Page 17: ...e maximum system capacity is 36 7 kBTU h Proper outdoor units have been selected 8 Calculation of Maximum Indoor Unit Capacity of Each Room CTx CTi thus calculate by the calculation below Room1 0D LPXP DSDFLW î 5RRP DSDFLW DIWHU WKH 7HPSHUDWXUH RUUHFWLRQ 5RRP 7RWDO DSDFLW DIWHU WKH 7HPSHUDWXUH RUUHFWLRQ î î î î N 78 K OK fulfills the load 16 3 kBTU h Room2 0D LPXP DSDFLW î 5RRP DSDFLW DIWHU WKH 7H...

Page 18: ...t 1 Outdoor temp 98 6 F 37 0 C D B Indoor temp 68 0 F 20 0 C W B Maximum System Capacity CTx Total Outdoor unit Capacity CTo so use the following formula Total Indoor units capacity 15 18 33 thus CTi 0 9 Refer to the tables in 4 4 STANDARD CAPACITY DIAGRAM PIo Outdoor unit Cooling Rated Power Input Correction Coefficient of Indoor temperature CTi 2 57 0 94 0 9 2 2 kW 0 85 Refer to 4 2 CORRECTING B...

Page 19: ... 0 F 20 C D B Maximum System Capacity CTx Total Indoor unit Capacity CTi so use the following formula PIo Outdoor unit Heating Rated Power Input Correction Coefficient of Indoor temperature CTi 3 34 1 20 0 9 3 61 kW 1 09 Refer to 4 2 CORRECTING BY TEMPERATURE Coefficient of the outdoor unit for indoor unit 2 Outdoor temp 26 6 F í3 C W B Indoor temp 77 0 F 25 C D B 1 34 15 15 18 1 09 18 15 18 1 20 ...

Page 20: ... B F W B 68 0 F 20 0 C W B 68 0 F 20 0 C W B 75 2 F 24 0 C W B 75 2 F 24 0 C W B 71 6 F 22 0 C W B 71 6 F 22 0 C W B 67 0 F 19 4 C W B 67 0 F 19 4 C W B 64 4 F 18 0 C W B 64 4 F 18 0 C W B 60 8 F 16 0 C W B 60 8 F 16 0 C W B 0 1 1 FRXOG KDYH YDULHG FDSDFLW DW GLIIHUHQW GHVLJQLQJ WHPSHUDWXUH 8VLQJ WKH QRPLQDO FRROLQJ KHDWLQJ FDSDFLW YDOXH DQG WKH UDWLR EHORZ WKH FDSDFLW FDQ EH REVHUYHG DW YDULRXV W...

Page 21: ...ity Outdoor Temperature C W B F W B 70 0 F 21 1 C D B 25 20 15 10 5 0 5 10 15 13 4 5 14 23 32 41 50 59 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 Ratio of power input Outdoor Temperature C W B F W B 70 0 F 21 1 C D B 60 8 F 16 0 C D B 78 8 F 26 0 C D B Figure 9 Indoor unit temperature correction 7R EH XVHG WR FRUUHFW LQGRRU XQLW FDSDFLW RQO Figure 10 Outdoor unit temperature correction 7R EH XVHG WR FRUUHFW ...

Page 22: ...ture C W B F W B 70 0 F 21 1 C D B Ratio of power input Outdoor intake air dry bulb temperature 13 14 5 14 23 32 41 50 59 25 20 15 10 5 0 5 10 15 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 C W B F W B 60 8 F 16 0 C W B 69 8 F 21 0 C W B 78 8 F 26 0 C W B Figure 11 Indoor unit temperature correction 7R EH XVHG WR FRUUHFW LQGRRU XQLW FDSDFLW RQO Figure 12 Outdoor unit temperature correction 7R EH X...

Page 23: ...umulator inlet Compressor inlet Indoor unit LEV inlet Heat exchanger inlet 4 3 STANDARD OPERATION DATA REFERENCE DATA Operation 2XWGRRU XQLW PRGHO 0 1 1 0 1 Operating conditions Ambient temperature Indoor DB WB Outdoor Indoor unit No of connected units Unit No of units in operation Model î î Piping Main pipe m Branch pipe Total pipe length Fan speed L L Amount of refrigerant lb oz kg OE R OE Outdo...

Page 24: ... 4 1 MXZ 4C36NAHZ cooling Ratio of capacity Total capacity of indoor units kBTU h Total capacity of indoor units kBTU h Ratio of power input Ratio of current Total capacity of indoor units kBTU h 0 10 20 30 40 50 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 0 10 20 30 40 50 0 0 0 2 0 4 0 6 0 8 1 0 0 10 20 30 40 50 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 MXZ 1 1RPLQDO FRROLQJ FDSDFLW 78 K QSXW N XUUHQW 9 A XUUH...

Page 25: ...door units kBTU h Total capacity of indoor units kBTU h Total capacity of indoor units kBTU h 0 10 20 30 40 50 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 0 10 20 30 40 50 0 0 0 2 0 4 0 6 0 8 1 0 0 10 20 30 40 50 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 Ratio of capacity Ratio of power input Ratio of current 208 230 V OCH573E ...

Page 26: ...of indoor units kBTU h 0 10 20 30 40 50 60 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 0 10 20 30 40 50 60 0 0 0 2 0 4 0 6 0 8 1 0 1 2 0 10 20 30 40 50 60 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 Ratio of capacity Ratio of power input Ratio of current MXZ 1 1RPLQDO FRROLQJ FDSDFLW 78 K QSXW N XUUHQW 9 A XUUHQW 9 A 208 230 V OCH573E ...

Page 27: ...ty of indoor units kBTU h Total capacity of indoor units kBTU h 0 10 20 30 40 50 60 0 0 0 2 0 4 0 6 0 8 1 0 1 2 0 0 7 5 15 0 22 5 30 0 37 5 45 0 52 5 60 0 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 0 0 7 5 15 0 22 5 30 0 37 5 45 0 52 5 60 0 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 Ratio of capacity Ratio of power input Ratio of current 208 230 V OCH573E ...

Page 28: ... of indoor units kBTU h Ratio of capacity Ratio of power input Ratio of current 0 10 20 30 40 50 60 70 0 0 0 2 0 4 0 6 0 8 1 0 1 2 0 10 20 30 40 50 60 70 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 0 10 20 30 40 50 60 70 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 MXZ 1 1RPLQDO FRROLQJ FDSDFLW 78 K QSXW N XUUHQW 9 A XUUHQW 9 A 208 230 V OCH573E ...

Page 29: ... of indoor units kBTU h Ratio of capacity Ratio of power input Ratio of current 0 10 20 30 40 50 60 70 0 0 0 2 0 4 0 6 0 8 1 0 1 2 0 10 20 30 40 50 60 70 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 0 10 20 30 40 50 60 70 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 MXZ 1 1RPLQDO FRROLQJ FDSDFLW 78 K QSXW N XUUHQW 9 A XUUHQW 9 A 208 230 V OCH573E ...

Page 30: ... 0 0 0 0 2 0 4 0 6 0 8 1 0 0 0 10 0 20 0 30 0 40 0 50 0 60 0 70 0 80 0 90 0 0 0 0 2 0 4 0 6 0 8 1 0 Total capacity of indoor units kBTU h Total capacity of indoor units kBTU h Total capacity of indoor units kBTU h Ratio of capacity Ratio of power input Ratio of current MXZ 1 1RPLQDO FRROLQJ FDSDFLW 78 K QSXW N XUUHQW 9 A XUUHQW 9 A 208 230 V OCH573E ...

Page 31: ... 0 4 0 6 0 8 1 0 1 2 0 0 10 0 20 0 30 0 40 0 50 0 60 0 70 0 80 0 90 0 0 0 0 2 0 4 0 6 0 8 1 0 1 2 208 V 230 V Total capacity of indoor units kBTU h Total capacity of indoor units kBTU h Total capacity of indoor units kBTU h Ratio of capacity Ratio of power input Ratio of current MXZ 1 1RPLQDO FRROLQJ FDSDFLW 78 K QSXW N XUUHQW 9 A XUUHQW 9 A 208 230 V OCH573E ...

Page 32: ...DFLW UDWLR FRUUHVSRQGLQJ WR VWDQGDUG SLSLQJ OHQJWK IURP LJXUH 7KHQ PXOWLSO E WKH KHDWLQJ FDSDFLW IURP LJXUH WR LQ 255 7 21 7 03 5 785 WR REWDLQ WKH DFWXDO FDSDFLW 1 Capacity Correction Curve 0 20 40 60 80 100 120 140 160 180 200 220 240 260 0 70 0 75 0 80 0 85 0 90 0 95 1 00 0 20 40 60 80 100 120 140 160 180 200 220 240 260 0 70 0 75 0 80 0 85 0 90 0 95 1 00 18 kBTU h 27 kBTU h 36 kBTU h Capacity ...

Page 33: ...Piping equivalent length ft 24 kBTU h 36 kBTU h 48 kBTU h 62 4 kBTU h 0 20 40 60 80 100 120 140 160 180 200 220 240 260 0 70 0 75 0 80 0 85 0 90 0 95 1 00 Total capacity of indoor unit Capacity ratio Piping equivalent length ft 30 kBTU h 45 kBTU h 60 kBTU h 78 kBTU h Figure 15 MXZ 8C48NA Cooling Figure 16 MXZ 8C60NA Cooling OCH573E ...

Page 34: ...GXFHG GXH WR IURVW IRUPDWLRQ RU GHIURVWLQJ PXOWLSO WKH FDSDFLW E WKH DSSURSULDWH FRUUHFWLRQ IDFWRU IURP WKH IROORZLQJ WDEOH WR REWDLQ WKH DFWXDO KHDWLQJ FDSDFLW Correction factor diagram 2XWGRRU QWDNH WHPSHUDWXUH í í í í í í í í í í RUUHFWLRQ IDFWRU 0 20 40 60 80 100 120 140 160 180 200 220 240 260 0 70 0 75 0 80 0 85 0 90 0 95 1 00 Total capacity of indoor unit Capacity ratio Piping equivalent le...

Page 35: ...ND CENTER FREQUENCIES Hz NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 MXZ 8C48NA MXZ 8C48NA U1 MXZ 8C48NAHZ MXZ 8C48NAHZ U1 COOLING MODE HEATING 51 SPL dB 54 LINE 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB 0 0002 μbar BAND CENTER FREQUENCIES Hz NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 MXZ 4C36NAHZ M...

Page 36: ...ockout Right trunking hole Knockout 92 3 5 8 60 2 3 8 5 3 16 60 2 3 8 55 2 3 16 53 2 3 32 92 3 5 8 26 1 1 32 27 1 1 16 29 1 5 32 73 2 7 8 92 3 5 8 Min 150mm 5 29 32 Min 1000mm 39 3 8 Side Air Intake Conduit hole 37 1 15 32 Knockout Front trunking hole Knockout Front piping hole Knockout Conduit hole 24 15 16 Knockout 55 2 3 16 27 1 1 16 92 3 5 8 75 2 15 16 73 2 7 8 26 1 1 32 55 2 3 16 60 2 3 8 5 3...

Page 37: ...3 16 55 2 3 16 27 1 1 16 26 1 1 32 73 2 7 8 92 3 5 8 60 2 3 8 75 2 15 16 92 3 5 8 Conduit hole 24 15 16 Knock Out Front piping hole Knock Out Front trunking hole Knock Out Conduit hole 37 1 15 32 Knock Out 60 2 3 8 5 3 16 60 2 3 8 55 2 3 16 26 1 1 32 73 2 7 8 75 2 15 16 92 3 5 8 27 1 1 16 55 2 3 16 92 3 5 8 Right trunking hole Knock Out Conduit hole 37 1 15 32 Knock Out Conduit hole Right piping h...

Page 38: ... 7 31 32 5 3 16 60 2 3 8 24 15 16 101 5 4 Right piping hole Knock Out Conduit hole 24 15 16 Knock Out Conduit hole 37 1 15 32 Knock Out Right trunking hole Knock Out 92 3 5 8 60 2 3 8 5 3 16 60 2 3 8 55 2 3 16 53 2 3 32 92 3 5 8 26 1 1 32 27 1 1 16 29 1 5 32 73 2 7 8 92 3 5 8 Conduit hole 37 1 15 32 Knock Out Front trunking hole Knock Out Front piping hole Knock Out Conduit hole 24 15 16 Knock Out...

Page 39: ...S PIPE SUSPENSION BOLT W3 8 M10 TB3B TB3D TB3A TB3C TB3E TB5 TB2B TERMINAL BLOCK TO OUTDOOR UNIT TERMINAL BLOCK TO INDOOR UNIT TERMINAL BLOCK TO M NET UNIT Unit inch TO INDOOR UNIT A A B C B C CAP CAP 25 1 72 2 27 32 90 3 17 32 170 6 11 16 47 1 27 32 65 2 9 16 25 1 25 1 70 2 3 4 70 2 3 4 209 8 7 32 450 17 23 32 SUSPENSION BOLT PITCH SUSPENSION BOLT PITCH 320 12 19 32 402 15 13 16 24 1 12 1 2 1 2 i...

Page 40: ...ater SS Connector Connection For Option CN3D Connector Branch box Outdoor Transmission Line CNS1 Connector Centralized Control Transmission Line CNS2 Connector Connection For Option CN3S Connector Connection For Option CN3N Connector Connection For Option CN51 Relay X501 505 M NET P B ConnectionTerminal Ground M NET Power Circuit Board TB1 Connection Terminal L Phase LI Connection Terminal N Phase...

Page 41: ...nnection For Option CN3S Connector Connection For Option CN3N Connector Connection For Option CN51 Relay X501 505 M NET P B ConnectionTerminal Ground M NET Power Circuit Board TB1 Connection Terminal L Phase LI Connection Terminal N Phase NI EI E2 E3 E4 Power Module IGBT Connection Terminal Reactor DCL1 DCL2 Reactor Switch Function Selection SW7 TB3 Terminal Block Branch box Outdoor Transmission L...

Page 42: ... MXZ 4C36NAHZ U1 MXZ 5C42NAHZ U1 MXZ 8C48NAHZ U1 OCH573E ...

Page 43: ... MXZ 8C48NA U1 OCH573E ...

Page 44: ... MXZ 8C60NA U1 OCH573E ...

Page 45: ... 6 2 BRANCH BOX PAC MKA50BC PAC MKA30BC 10ths DIGIT OCH573E ...

Page 46: ...1 2 5 8 7 5 5 LJ 38 2 38 2 1 2 3 2 QGRRU XQLW QGRRU XQLW RPELQDWLRQ RI LQGRRU XQLWV QWHU WKH ORFDWLRQ RI FRPELQHG LQGRRU XQLWV ZLWK PRGHO QDPH LQ HDFK EODQN EHORZ EHFDXVH LW LV QHFHVVDU IRU VHUYLFH DQG PDLQWHQDQFH 6 0 2 9 a 7 a 7 7 UDQFK ER FRQWUROOHU ERDUG XVH 8 9 XVH 8 9 1 Switch for indoor unit connection 2 Switch for function selection Switch for function selection Connector Connection for ser...

Page 47: ...tching with the piping connection A B C D E A B C MA remote controller MA remote controller MA remote controller MA remote controller Wireless remote controller Wireless remote controller Wireless remote controller Wireless remote controller For centralized management 051 Outdoor unit Piping For Branch box 1 4 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 Address SW 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8...

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Page 49: ...r TH A E Gas pipe temperature Service port Strainer Strainer Strainer Strainer Strainer Strainer Service port High pressure sensor 63HS Thermistor TH7 Ambient Thermistor TH3 Outdoor Liquid pipe Thermistor TH8 Heat Sink Refrigerant flow in cooling Refrigerant flow in heating Branch box Strainer Capillary tube3 Indoor Outdoor unit Outdoor unit MXZ 8C60NA U1 PAC MKA50BC PAC MKA51BC PAC MKA30BC PAC MK...

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Page 54: ... mode KHFN WKH FROG DLU EORZ RXW Heat mode KHFN WKH KHDW EORZ RXW Press the button to go through the operation modes in the order of Cool and Heat Check the auto vane with the buttons KHFN WKH RSHUDWLRQ RI WKH RXWGRRU XQLW IDQ DOVR Press the button to return to Test run operation Press the button KHQ WKH WHVW UXQ LV FRPSOHWHG WKH 7HVW UXQ PHQX VFUHHQ ZLOO DSSHDU 7KH WHVW UXQ ZLOO DXWRPDWLFDOO VWRS...

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Page 56: ...refore you cannot detect any erroneous con nection of refrigerant pipes and the connecting wires If it aims at detection of any erroneous connection be sure to carry out the test run from remote controller with reference to 1 Using remote controller SW3 1 SW3 2 SW3 1 SW3 2 ON OFF ON ON Cooling operation Heating operation Note After performing the test run set SW3 1 to OFF IHZ VHFRQGV DIWHU WKH FRP...

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Page 108: ...operation Outdoor controller board DIP SW9 2 SW1 SW2 Function Demand control OFF ON ON OFF ON OFF OFF ON OFF ON ON 100 75 50 0 Normal Stop A Distant control board B Relay circuit C External output adapter PAC SA88HA E D Outdoor unit control board A Remote control panel B Relay circuit C External input adapter PAC SC36NA E D Outdoor unit control board E Relay power supply F Procure locally G Max 10...

Page 109: ... 2 3 4 5 Gray Orange Red Yellow Black 1 2 3 4 5 Red Blue Orange Yellow White M M Measure the resistance between the terminals with a tester At the ambient temperature 68 F 20 Solenoid valve coil 4 way valve 21S4 Motor for compressor MC Measure the resistance between the terminals with a tester At the ambient temperature 68 F 20 Normal 1197 10 Abnormal Open or short Solenoid valve coil Bypass valve...

Page 110: ...tor and measure the resistance of connector pins Refer to 8 6 HOW TO CHECK THE PARTS Replace outdoor multi controller circuit board MULTI B and the defective fan motor COMPLETE Inverter driver Ground power supply inverter drive power supply gate drive rotation signal control voltage 7 6 5 4 1 3 1 CNF1 15 V DC 0 6 5 V DC 0 15 V DC pulse Motor TESTS POINT 䐟 VDC TESTS POINT 䐠 Vcc CHECK POINT 290 350 ...

Page 111: ...circuit board Check the breaker and main incoming power Check power board Check wiring Check the voltage from the power circuit board to CNDC PNK connector No No Yes lit No No lit Yes No Multi controller circuit board check Yes blow Yes blow CNDC PNK Power circuit board 3 1 1 3 CNDC PNK CNAC2 RED Noise Filter Circuit Conv Circuit Multi controller circuit board 290 350 V DC 208 230 V AC 10 208 230 ...

Page 112: ... open Yes open Replace Noise filter board and check 52C relay wiring power circuit board Check wiring Check model setting switch SW4 on the multi controller board Replace power board No normal Power circuit board check Normal Yes Is the voltage of the compressor U V U W and V W balanced 1 3 CNAC RED 1 Multi controller circuit board M NET power circuit board 52C relay PTCs 208 230 V AC 㼼10 Multi co...

Page 113: ...Disconnect the branch box outdoor transmission wiring from the terminal block TB3 and check the voltage between M1 and M2 on TB3 again To check the voltage of the parts on this board with a tester is difficult due to its location Test points are limited No Yes 24 30 V DC No Yes 208 230 V AC No Yes 24 30 V DC M NET power circuit board check Power circuit board 1 3 CNAC1 WHT Multi controller circuit...

Page 114: ...e thermistor 7KHUPLVWRU RPSUHVVRU 7 0 10 20 30 40 50 í20í10 0 10 20 30 40 50 Temperature Resistance k í4 í14 32 50 68 86 104122 F 500 400 300 200 100 0 25 50 75 100 120 Resistance k 77 122 167 212 248 ºF Û N Û N Û N Û N Û N 7KHUPLVWRU 5 N FRQVWDQW 5t H S W Medium temperature thermistor 7KHUPLVWRU HDW VLQN 7 200 150 100 50 0 25 50 75 100 110 125 Resistance k 77 122 167 212 230 257 ºF Û Nȍ Û Nȍ Û Nȍ...

Page 115: ...LED1 2 1 When the pressure displayed on self diagnosis LED1 2 is between 0 and 14 PSIG 0 098 MPaG the high pressure sensor has a problem 2 When the pressure displayed on self diagnosis LED1 2 is approximately 725 PSIG 5 0 MPaG the control board has a problem 4 Remove the high pressure sensor from the control board and short circuit between the pin 2 and pin 3 connectors 63HS to check the pressure ...

Page 116: ...tween the pin 2 and pin 3 connectors 63LS to check the pressure with the self diagnosis LED1 2 1 When the pressure displayed on the self diagnosis LED1 2 exceeds 247 PSIG 1 7 MPaG the low pressure sensor has a problem 2 If other than 1 the control board has a problem 5 Remove the high pressure sensor 63HS from the control board and insert it into the connector for the low pres sure sensor 63LS to ...

Page 117: ...sure the resistance with a tester At the ambient temperature 50 to 86 F 10 to 30 Disconnect the connector then measure the resistance with a tester Winding temperature 68 F 20 Thermistor TH A E Gas pipe Normal 4 3 to 9 6k Abnormal Open or short Normal Red White Red Orange Red Yellow Red Blue Abnormal 46 4 Linear expansion valve LEV A E Open or short OCH573E ...

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Page 119: ...Be sure to attach the stopper to pipe B B A How to attach the coil ROG WKH ORZHU SDUW RI WKH PDLQ ERG VKRZQ DV ILUPO VR WKDW WKH PDLQ ERG GRHV QRW PRYH DQG DWWDFK WKH FRLO E LQVHUWLQJ LW GRZQZDUG LQWR WKH PDLQ ERG 7KHQ VHFXUHO DWWDFK WKH FRLO VWRS SHU WR SLSH W WKLV WLPH EH FDUHIXO WKDW VWUHVV LV QRW DGGHG WR OHDG ZLUH DQG PDLQ ERG LV QRW ZRXQG E OHDG ZLUH I WKH VWRS SHU LV QRW ILUPO DWWDFKHG WR S...

Page 120: ... be fully closed when the fan is operating The temperature measured by the temperature sensor will drop if there is any leakage If the measured temperature is significantly lower than that on the remote controller this indicates that the valve is not closed It is not necessary to replace the linear expansion valve if the leak of refrigerant is small and does not cause a malfunction Check improperl...

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Page 125: ...lowed RQQHFWLRQ QIRUPDWLRQ OHDU 6ZLWFK OHDU R QRW FOHDU When relocating units or connecting additional units EQRUPDO GDWD FOHDU VZLWFK LQSXW Clear abnormal data 1RUPDO OFF to ON any time after the power is turned on 7R GHOHWH DQ HUURU KLVWRU 3XPS GRZQ 5XQ DGMXVWPHQW PRGH 1RUPDO XULQJ FRPSUHVVRU UXQQLQJ To facilitate outdoor unit the pumping down operation Frequency Fixed to 65 Hz Indoor electronic...

Page 126: ...r unit is in operation fully closes the electronic expansion valve on the indoor unit which is in FAN COOL STOP or thermo OFF Enable Normal Before turning the power ON To reduce the room temperature increase by setting the LEV opening lower for the units in thermo OFF operation The refrigerant is more likely to collect in the units with thermo OFF operation and causing the units refrigerant shorta...

Page 127: ...ondensation on the indoor unit by lowering the frequency The performance might be LQVXI FLHQW 0DQXDO GHIURVW Manual defrost Normal During compressor running in HEAT mode Turn ON when it is necessary to perform the defrosting operation forcedly Effective only at startup or 10 minutes after the last defrosting operation It performs the defrosting operation forcedly HEAT operation is stopped temporar...

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Page 135: ...lity TH8 Heat sink sensor data at time of abnormality OC SC cooling at time of abnormality í GHJUHH LVSOD RI RXWGRRU 6 GDWD DW WLPH RI DEQRUPDOLW IC1 SC SH at time of abnormality í GHJUHH XULQJ KHDWLQJ VXEFRRO 6 XULQJ FRROLQJ VXSHUKHDW 6 L HG WR GXULQJ FRROLQJ RSHUDWLRQ LVSOD RI LQGRRU 6 6 GDWD DW WLPH RI DEQRUPDOLW IC2 SC SH at time of abnormality IC3 SC SH at time of abnormality IC4 SC SH at tim...

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Page 140: ...is applied to each indoor unit while branch box is connected the indoor unit is controlled based on the sensor data of itself not the average data Function Settings Mode No Setting No Initial setting when sent from the factory Remarks Power failure automatic recovery Indoor temperature detecting LOSSNAY connectivity Power supply voltage Frost prevention temperature Humidifier control OFF ON Averag...

Page 141: ...Calculate room volumes m3 and find the room with the smallest volume 7KH SDUW ZLWK UHSUHVHQWV WKH URRP ZLWK WKH VPDOOHVW YROXPH I WKH FDOFXODWLRQ UHVXOWV GR QRW H FHHG WKH PD LPXP FRQ FHQWUDWLRQ SHUIRUP WKH VDPH FDOFXODWLRQV IRU WKH ODUJHU VHF RQG DQG WKLUG URRP HWF XQWLO LW KDV EHHQ GHWHUPLQHG WKDW QRZKHUH WKH PD LPXP FRQFHQWUDWLRQ ZLOO EH H FHHGHG Indoor unit All refrigerant of this system will ...

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Page 143: ... are combined together Refer to procedure No 5 below to remove thermis tor Ambient TH7 Photo 6 Photo 7 5 Removing the thermistor Ambient TH7 5HPRYH WKH VHUYLFH SDQHO 6HH 3KRWR 5HPRYH WKH WRS SDQHO 6HH 3KRWR LVFRQQHFW WKH FRQQHFWRU 7 UHG RQ WKH PXOWL FRQ WUROOHU FLUFXLW ERDUG LQ WKH HOHFWULFDO SDUWV ER RRVHQ WKH ZLUH FODPSV RQ WRS RI WKH HOHFWULFDO SDUWV ER 6HH 3KRWR 3XOO RXW WKH WKHUPLVWRU PELHQW ...

Page 144: ...HG IL LQJ VFUHZV î DQG EDOO YDOYH DQG VWRS YDOYH IL LQJ VFUHZV î WKHQ UHPRYH WKH YDOYH EHG 6HH 3KRWR DQG 5HPRYH FRYHU SDQHO IL LQJ VFUHZV WKHQ VOLGH WKH FRYHU SDQHO IURQW XSZDUG WR UHPRYH LW 7KH FRYHU SDQHO IURQW LV IL HG WR WKH FRYHU SDQHO UHDU ZLWK D KRRN RQ WKH UHDU VLGH 6HH 3KRWR 5HPRYH WKH FRYHU SDQHO UHDU IL LQJ VFUHZV IRU ULJKW VLGH DQG IRU UHDU WKHQ VOLGH WKH FRYHU SDQHO UHDU XSZDUG WR UHP...

Page 145: ...HFW WKH FRQQHFWRU 6 EOXH RQ WKH PXOWL FRQ WUROOHU FLUFXLW ERDUG LQ WKH HOHFWULFDO SDUWV ER 5HPRYH WKH HOHFWULFDO SDUWV ER 6HH 3KRWR 5HFRYHU UHIULJHUDQW 5HPRYH WKH ZHOGHG SDUW RI ORZ SUHVVXUH VHQVRU Refer to the notes below Photo 12 12 Removing electronic expansion valve LEV A LEV B 5HPRYH WKH VHUYLFH SDQHO 6HH 3KRWR 5HPRYH WKH WRS SDQHO 6HH 3KRWR 5HPRYH WKH FRYHU SDQHO IURQW 5HIHU WR SURFHGXUH 5HP...

Page 146: ...QOHW DQG RXWOHW DQG WKHQ UHPRYH WKH FRPSUHVVRU Note Recover refrigerant without spreading it in the air Photo 13 Figure 2 14 Removing the accumulator 5HPRYH WKH VHUYLFH SDQHO 6HH 3KRWR 5HPRYH WKH WRS SDQHO 6HH 3KRWR 5HPRYH WKH IURQW FRYHU SDQHO 5HIHU WR SURFHGXUH 5HPRYH WKH EDFN FRYHU SDQHO 5HIHU WR SURFHGXUH 5HPRYH WKH HOHFWULFDO SDUWV ER 6HH 3KRWR 5HPRYH WKH YDOYH EHG 6HH SURFHGXUH 5HPRYH WKH FR...

Page 147: ...XW WKH GLVFRQQHFWHG ZLUH IURP WKH HOHFWULFDO SDUWV ER 6HH 3KRWR RRVHQ WKH ZLUH FODPSV RQ WKH VLGH RI WKH PRWRU VXSSRUW DQG VHSDUDWRU 5HPRYH PRWRU VXSSRUW IL LQJ VFUHZV WKHQ UHPRYH WKH PRWRU VXSSRUW ZLWK IDQ PRWRU VWLOO DWWDFKHG 6HH 3KRWR 5HPRYH EDVH KHDWHU FRYHU IL LQJ VFUHZV WKHQ UHPRYH WKH EDVH KHDWHU FRYHU 5HPRYH WKH EDVH KHDWHU 6HH 3KRWR Notes 1 Tighten the propeller fan with a torque of 5 7 0...

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Page 149: ...bined together Refer to procedure No 5 below to remove thermis tor Ambient TH7 Photo 5 Photo 6 5 Removing the thermistor Ambient TH7 5HPRYH WKH VHUYLFH SDQHO 6HH LJXUH 5HPRYH WKH WRS SDQHO 6HH LJXUH LVFRQQHFW WKH FRQQHFWRU 7 UHG RQ WKH PXOWL FRQ WUROOHU FLUFXLW ERDUG LQ WKH HOHFWULFDO SDUWV ER RRVHQ WKH ZLUH FODPSV RQ WRS RI WKH HOHFWULFDO SDUWV ER 6HH 3KRWR 3XOO RXW WKH WKHUPLVWRU PELHQW 7 IURP W...

Page 150: ... LQJ VFUHZV î DQG EDOO YDOYH DQG VWRS YDOYH IL LQJ VFUHZV î DQG WKHQ UHPRYH WKH YDOYH EHG 6HH 3KRWR DQG 5HPRYH FRYHU SDQHO IL LQJ VFUHZV WKHQ VOLGH WKH FRYHU SDQHO IURQW XSZDUG WR UHPRYH LW 7KH FRYHU SDQHO IURQW LV IL HG WR WKH FRYHU SDQHO UHDU ZLWK D KRRN RQ WKH UHDU VLGH 6HH 3KRWR 5HPRYH WKH FRYHU SDQHO UHDU IL LQJ VFUHZV IRU ULJKW VLGH DQG IRU UHDU WKHQ VOLGH WKH FRYHU SDQHO UHDU XSZDUG WR UHPR...

Page 151: ...th to prevent it from heating as the temperature below then braze the pipes so that the inside of pipes are not oxidized Bypass valve procedure 9 248 F 120 C or more High pressure switch and high pressure sensor proce dure 10 212 F 100 C or more Low pressure sensor procedure 11 212 F 100 C or more LEV procedure 12 248 F 120 C or more 11 Removing the low pressure sensor 63LS 5HPRYH WKH VHUYLFH SDQH...

Page 152: ...FRPSUHVVRU LQOHW DQG RXWOHW DQG WKHQ UHPRYH WKH FRPSUHVVRU Note Recover refrigerant without spreading it in the air Photo 13 Figure 3 14 Removing the accumulator 5HPRYH WKH VHUYLFH SDQHO 6HH LJXUH 5HPRYH WKH WRS SDQHO 6HH LJXUH 5HPRYH WKH IURQW FRYHU SDQHO 5HIHU WR SURFHGXUH 5HPRYH WKH EDFN FRYHU SDQHO 5HIHU WR SURFHGXUH 5HPRYH WKH HOHFWULFDO SDUWV ER 6HH 3KRWR 5HPRYH WKH YDOYH EHG 5HIHU WR SURFHG...

Page 153: ...YLFH SDQHO 6HH LJXUH 5HPRYH WKH WRS SDQHO 6HH LJXUH 5HPRYH WKH HOHFWULFDO SDUWV ER 6HH SKRWR 5HPRYH VFUHZV IRU UHDFWRU WR UHPRYH WKH UHDF WRU 6HH LJXUH Figure 4 OCH573E 5HDFWRU OHFWULFDO SDUWV ER 6FUHZV IRU UHDFWRU RQQHFWRUV RI UHDFWRU RWWRP SODWH RI HOHFWULFDO SDUWV ER QHFWRUV R ...

Page 154: ...W ERDUG LDJUDP V PERO LQ WKH FRQQHFWRU KRXVLQJ DQ PRWRU 1 1 7KHUPLVWRU SLSH 7 7KHUPLVWRU 2XWGRRU OLTXLG SLSH 7 7KHUPLVWRU RPSUHVVRU 7 7KHUPLVWRU 6XFWLRQ SLSH PELHQW 2XWGRRU 7 LJK SUHVVXUH VZLWFK LJK SUHVVXUH VHQVRU 6 RZ SUHVVXUH VHQVRU 6 ZD YDOYH 6 SDVV YDOYH 69 OHFWURQLF H SDQVLRQ YDOYH 1 9 1 9 3XOO RXW WKH GLVFRQQHFWHG ZLUH IURP WKH HOHFWULFDO SDUWV ER 5HPRYH WKH WHUPLQDO FRYHU DQG GLVFRQQHFW WK...

Page 155: ...er to procedure No 5 below to remove thermis tor Ambient TH7 Photo 6 5 Removing the thermistor Ambient TH7 5HPRYH WKH VHUYLFH SDQHO 6HH 3KRWR 5HPRYH WKH WRS SDQHO 6HH 3KRWR LVFRQQHFW WKH FRQQHFWRU 7 UHG RQ WKH PXOWL FRQ WUROOHU FLUFXLW ERDUG LQ WKH HOHFWULFDO SDUWV ER RRVHQ WKH ZLUH FODPSV RQ WRS RI WKH HOHFWULFDO SDUWV ER 6HH 3KRWR 3XOO RXW WKH WKHUPLVWRU PELHQW 7 IURP WKH VHQVRU KROGHU Note When...

Page 156: ...3KRWR 5HPRYH YDOYH EHG IL LQJ VFUHZV î DQG EDOO YDOYH DQG VWRS YDOYH IL LQJ VFUHZV î WKHQ UHPRYH WKH YDOYH EHG 6HH 3KRWR DQG 5HPRYH FRYHU SDQHO IL LQJ VFUHZV WKHQ VOLGH WKH FRYHU SDQHO IURQW XSZDUG WR UHPRYH LW 7KH FRYHU SDQHO IURQW LV IL HG WR WKH FRYHU SDQHO UHDU ZLWK D KRRN RQ WKH UHDU VLGH 6HH 3KRWR 5HPRYH WKH FRYHU SDQHO UHDU IL LQJ VFUHZV IRU ULJKW VLGH DQG IRU UHDU WKHQ VOLGH WKH FRYHU SDQH...

Page 157: ...SURFHGXUH LVFRQQHFW WKH FRQQHFWRU 6 EOXH RQ WKH PXOWL FRQ WUROOHU FLUFXLW ERDUG LQ WKH HOHFWULFDO SDUWV ER 5HPRYH WKH HOHFWULFDO SDUWV ER 6HH 3KRWR 5HFRYHU UHIULJHUDQW 5HPRYH WKH ZHOGHG SDUW RI ORZ SUHVVXUH VHQVRU Refer to the notes below Photo 12 12 Removing electronic expansion valve LEV A LEV B 5HPRYH WKH VHUYLFH SDQHO 6HH 3KRWR 5HPRYH WKH WRS SDQHO 6HH 3KRWR 5HPRYH WKH FRYHU SDQHO IURQW 5HIHU ...

Page 158: ...H IURQW SDQHO 6HH 3KRWR 5HPRYH VHSDUDWRU IL LQJ VFUHZV î DQG UHPRYH WKH VHSDUDWRU 6HH LJXUH 5HFRYHU UHIULJHUDQW 5HPRYH WKH FRPSUHVVRU IL LQJ QXWV XVLQJ VSDQQHU RU DGMXVWDEOH ZUHQFK 5HPRYH WKH ZHOGHG SLSH RI PRWRU IRU FRPSUHVVRU LQOHW DQG RXWOHW DQG WKHQ UHPRYH WKH FRPSUHVVRU Note Recover refrigerant without spreading it in the air Photo 13 Figure 3 Photo 14 OCH573E 5HDFWRU OHFWULFDO SDUWV ER 6FUHZ...

Page 159: ...WKH FRYHU SDQHO IURQW 5HIHU WR SURFHGXUH 5HPRYH WKH FRYHU SDQHO UHDU 5HIHU WR SURFHGXUH 5HPRYH WKH VLGH SDQHO 5 5HIHU WR SURFHGXUH 5HFRYHU UHIULJHUDQW 5HPRYH ZHOGHG SLSHV RI DFFXPXODWRU LQOHW DQG RXWOHW 5HPRYH DFFXPXODWRU OHJ IL LQJ VFUHZV î 6HH 3KRWR Note Recover refrigerant without spreading it in the air Photo 15 Photo 16 OCH573E FFXPXODWRU QOHW 2XWOHW FFXPXODWRU FFXPXODWRU OHJ FFXPXODWRU OHJ I...

Page 160: ...3XOO RXW WKH WKHUPLVWRU V 7 IURP WKH VHQVRU KROG HUV PRXQWHG RQ WKH JDV SLSH 6HH 3KRWR RRVHQ WKH LQVXODWLRQ VKHHW ZKLFK EXQGOHV WKH WKHUPLVWRU FRQQHFWRUV RRVHQ WKH VLGH FODPSV WKHQ GLVFRQQHFW WKH FRQQHFWRU V RQ WKH FRQWUROOHU ERDUG 3XOO RXW WKH OHDG ZLUH V WKURXJK WKH KROH WR WKH FRQWUROOHU ERDUG VLGH 7 IRU 3 0 6HH 3KRWR OCH573E Photo 2 1 6HQVRU KROGHUV KROH Photo 2 2 Photo 2 3 QVXODWLRQV QVXODWLR...

Page 161: ... RQ WKH FRQWUROOHU ERDUG 3XOO RXW WKH OHDG ZLUH V WKURXJK WKH KROH WR WKH FRQWUROOHU ERDUG VLGH 6HH 3KRWR RU 9 IRU 3 0 6HH 3KRWR 4 Removing the controller board 5HPRYH WKH FRQWUROOHU FRYHU 6HH 3KRWR RRVHQ WKH VLGH FODPSV WKHQ GLVFRQQHFW WKH FRQQHFWRUV RQ WKH FRQWUROOHU ERDUG 3LFN DQ XSSHU HGJH RI WKH FRQWUROOHU ERDUG WKHQ SXOO IRU ZDUG 7KH FRQWUROOHU ERDUG LV IL HG WR WKH FRQWUROOHU ERDUG KROGHU Z...

Page 162: ...WKURXJK WKH KROH WR WKH FRQWUROOHU ERDUG VLGH Removing the header assy XW WKH EDQG ZKLFK IL HV WKH KHDGHU DVV DQG 9 DVV WRJHWKHU WKHQ UHPRYH WKH UXEEHU PRXQW 6HH 3KRWR 5HPRYH WKH KHDGHU DVV 6HH 3KRWR Disassembling the pipe box 5HPRYH VLGH SDQHO IL LQJ VFUHZV 6HH 3KRWR 3XOO RXW WKH SLSH ER WRS DQG VHSDUDWH LW IURP WKH VLGH SDQHO 6HH 3KRWR 7XUQ WKH SLSH ER WRS XSVLGH GRZQ 6HH 3KRWR 5HPRYH LQVXODWLRQ...

Page 163: ... OCH573E ...

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