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47

Installation.and.Maintenance

Service Manual

Steps

Procedure

9..Remove.electronic.expansion.valve.and.cut-off.valve

10..Remove.valve.support.sub-assy

Remove. electronic. expansion. valve. and. cut-off.
valve. Unsolder. the. spot. weld. between. electronic.
expansion. valve. and. cut-off. valve. as. well. as. the.
spot. weld. of. connection. pipe. for. condenser,. and.
then. remove. the. expansion. valve.. Meanwhile,.
rotate. out. the. electronic. coil,. and. then. pull. it.
upwards.to.remove.it.

.valve.support
.sub-assy

Remove.screws.fixing.valve.support.and.chassis,.
and.then.remove.the.valve.support.sub-assy.

electronic.expansion.valve

cut-off.valve

11..Remove.isolation.sheet

Remove. screws. fixing. isolation. sheet. and. then.
remove.the.isolation.sheet.

.isolation.sheet

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Содержание QSFMO-D2

Страница 1: ...Service Manual Model QSFMO D2 QSFMO T3 QSFMO Q4 Refrigerant R410A...

Страница 2: ...1 Technical Information Service Manual 1 Summary Part Technical Information Outdoor Unit QSFMO T3 QSFMO Q4 QSFMO D2...

Страница 3: ...tube Aluminum fin copper tube Aluminum fin copper tube Pipe Diameter inch 0 31 0 37 0 37 Coil length l X height H Xcoil width L inch 30 3X1 50X21 7 35 0X1 73X26 0 35 0X1 73X26 0 Fan Motor Speed rpm H...

Страница 4: ...3 Technical Information Service Manual 3 Outline Dimension Diagram 35 1 37 2 27 6 15 6 13 4 22 0 14 5 35 4 32 1 23 5 14 9 12 4 13 5 21 7 Unit inch 1 QSFMO D2 2 QSFMO T3 QSFMO Q4 Unit inch...

Страница 5: ...ot available for 14K 18K model C2 C3 D3 D2 B3 B2 A2 A3 A1 A unit electronic expansion valve B1 B unit electronic expansion valve C1 C unit electronic expansion valve D1 D unit electronic expansion val...

Страница 6: ...Note Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model 1 QSFMO D2 than 30V to prevent the risk of electrical shock of terminal P DC and N DC at AP1 is hi...

Страница 7: ...T3 3OHDVH GRQ W WRXFK DQ WHUPLQDO ZKHQ WKH YROWDJH RI WHUPLQDO 3 DQG 1 DW 3 LV KLJKHU WKDQ 9 WR SUHYHQW WKH ULVN RI HOHFWULFDO VKRFN 51 1 1 1 9 8 9 8 203 33 1 7 9 57 57 9 8 9 8 203 3 36 33 57 7 6 1625...

Страница 8: ...verload protector 5 Temperature sensor 6 Compressor electric heater 7 Outdoor fan 8 4 way valve 9 Chassis electric heater reserved 10 Unit A electronic expansion valve 11 Unit B electronic expansion v...

Страница 9: ...electronic expansion valve B 15 Interface of electronic expansion valve C 16 Interface of electronic expansion valve D 17 Communication wire interface 18 Communication neutral wire interface 19 20 In...

Страница 10: ...ing and then it will run in set speed The fan shall run at every speed for at least 80s When the quantity of running indoor unit is changed the unit will enter the control described in 1 3 5 1 and 1 3...

Страница 11: ...de then compare the mode of the other indoor units to see if there is a conflict Cooling mode dry mode is in conflict with heating mode b Fan mode is in conflict with heating mode and the heating mode...

Страница 12: ...ower 2 8 Compressor Phase lacking Protection When the compressor starts if one of the three phases is detected open the compressor will enter phase lacking protection The malfunction will be cleared a...

Страница 13: ...or unit and then remove the cover of electric box 2 As shown in the fig below connect the plug of discharge resistance about 100ohm 20W if there is no discharge resistance you can use the plug of sold...

Страница 14: ...efrosting 20 Oil return 21 Complete unit frequency restriction protection 22 Complete unit frequency dropping protection 23 Unit A frequency restriction or frequency dropping protection 24 Unit B freq...

Страница 15: ...on valve malfunction 57 Unit C communication wire misconnection or expansion valve malfunction 58 Unit D communication wire misconnection or expansion valve malfunction Note discharge the position in...

Страница 16: ...then energize the unit to operate Test the resistance between the three phases Reconnect the wire of the compressor according to the correct wiring method If the resistance is normal If the resistance...

Страница 17: ...on is connected well and if the induction is broken Flow chart Start Check If the power supply is normal Power supply is abnormal yes yes yes no no no Check if the outdoor induction is broken The indu...

Страница 18: ...stthevoltagebetweenthetwo ends of the electrolytic capacitor with the DC shift of the universal meter The voltage is above 100V yes yes yes no no no The detection circuit of the outdoor mainboard has...

Страница 19: ...s good Flow chart Start If the outdoor ambient temperature is above 53 yes yes yes no no no It is a normal protection please operate the unit after the outdoor ambient temperature has changed If the i...

Страница 20: ...nate the malfunction Check whether the temperature senspr is normal according to resistance table Replace the temperature sensor with the same model Replace the controller with the same model End Elim...

Страница 21: ...s longer than 3min no no no no no no yes yes yes yes yes yes If the connection wire of the compressor is connected well and correctly Eliminate the malfunction Reconnecttheconnectionwire ofthecompress...

Страница 22: ...Communication malfunction of some indoor units De energize check the connection wire of indoor and outdoor unit and the wire of the eletric box is connected correctly no no no Connected correctly Rec...

Страница 23: ...ox is connected correctly Connected correctly Reconnect according to the wiring diagram Connected correctly Reconnect according to the wiring diagram De energize check if the connection wire between t...

Страница 24: ...nce is below 1k If the wiring of the eletric expansion valve is coonected well Replace the overload protector Check the coil of the eletric expansion valve replace it if it is broken Eliminate the mal...

Страница 25: ...w chart Eliminate the malfunction Eliminate the malfunction Eliminate the malfunction Replace the compressor End no no no no no no yes yes yes yes yes yes Replace outdoor mainboard The unit appears de...

Страница 26: ...details Malfunction of compressor Compressor can t operate Refer to point 5 of maintenance method for details 9 4 Maintenance Method for Normal Malfunction 1 Air Conditioner Can t be Started up 2 Poor...

Страница 27: ...n pipe Replace drain pipe Wrapping is not tight Water leaking from the pipe connection place of indoor unit wrap it again and bundle it tightly 5 Compressor can t Operate Possible causes Discriminatin...

Страница 28: ...37 Installation and Maintenance Service Manual 10 Exploded View and Parts List 1 QSFMO D2 1 2 3 4 6 7 11 12 13 14 19 20 22 23 24 26 27 17 25 18 8 21 10 9 5 16 15...

Страница 29: ...Temperature Sensor 39000073 1 10 Temperature Sensor 3900007301 1 11 Cut off Valve 071302391 1 12 Cut off Valve 07130239 1 13 Retaining Plate 02113040P 1 14 Handle Assy 02113039P 1 15 Electric expand...

Страница 30: ...39 Installation and Maintenance Service Manual 2 QSFMO T3 1 2 3 4 5 8 9 6 10 11 12 13 14 20 23 24 26 29 30 31 32 33 34 35 37 36 39 40 17 16 25 28 15 38 19 21 22 7 18 27...

Страница 31: ...sor 3900007301 1 18 Temperature Sensor 3900007302 1 19 Electric Expand Valve Fitting 43000084 1 20 Electronic Expansion Valve assy 07133456 1 21 Electric Expand Valve Fitting 4300008401 1 22 Electric...

Страница 32: ...41 Installation and Maintenance Service Manual 3 QSFMO Q4 1 2 3 4 5 8 9 6 10 11 12 13 14 23 24 25 28 30 31 32 33 34 35 36 38 37 18 17 26 29 16 15 39 40 41 7 19 21 22 20 27...

Страница 33: ...1 18 Temperature Sensor 3900007303 1 19 big handle Assy 02113042P 1 20 Electric Expand Valve Fitting 43000084 1 21 Electric Expand Valve Fitting 4300008401 1 22 Electric Expand Valve Fitting 43000084...

Страница 34: ...disassembly Handle Top panel 1 2 Twist off the screws used for fixing the top cover pull the top cover upward to remove it 3 Twist off the screws used for fixing the handle pull the handle upward to r...

Страница 35: ...e rotate it to the left and then remove the front panel 2 Remove front grille and front panel Remove the screws connecting the left side pla teand the chassis and then remove the left side plateassy F...

Страница 36: ...it 5 Remove Electric Box Assy Electric Box Remove the nuts fixing the blade and thenremove the axial flow fan Axial Flow Fan 4 Remove the axial flow fan fan motor fixing frame Remove the 4 tapping scr...

Страница 37: ...reactor Tear up the soundproof sponge carefully Soundproof sponge Discharge the refrigerant completely unsolder the pipelines connecting the compressor and the condenser assy and then remove the 4 way...

Страница 38: ...and cut off valve as well as the spot weld of connection pipe for condenser and then remove the expansion valve Meanwhile rotate out the electronic coil and then pull it upwards to remove it valve sup...

Страница 39: ...oot nuts on compressor and then remove the compressor Dissemble the chassis sub assy and condenser sub assy 13 Remove condenser sub assy compressor Remove the screws connecting the support con denser...

Страница 40: ...Procedure Remove the screws fixing big handle and right side plate to remove the big handle 1 Remove big handle and wire connection cover Before disassembly Remove the screws fixing wire connection co...

Страница 41: ...top cover panel and left right side plate to remove top cover Remove the screws fixing grille and panel to remove the grille on the panel Remove the screws fixing panel chassis and motor support to re...

Страница 42: ...rd grille to remove the right side plate Remove the screws fixing guard grille and left side plate to remove guard grille Remove the screws fixing chassis and condenser support to remove the left side...

Страница 43: ...with spanner to remove the fan blade Remove the tapping screws fixing motor pull out the pin of leading wire for motor and remove the screws fixing motor support and chassis to remove the motor and mo...

Страница 44: ...ance and isolation sheet to remove the PFC electrical inductance Welding cut the welding point jointing the four way valve with blowtorch to remove the four way valve sub assy Note please make sure th...

Страница 45: ...uction pipe sub assy Remove the screws fixing isolation sheet and liquid receiver and lift to remove the liquid receiver Remove the screws fixing isolation sheet and condenser side plate to remove the...

Страница 46: ...fixing valve support assy and chassis sub assy to remove the valve support assy Welding cut the welding point jointing EXV sub assy and refrigerant collection pipe to remove the EXV assy Note fully p...

Страница 47: ...grounding wire screw on the electric box assy and then remove the grounding wire See fig 1 a c b Disconnect the wiring terminals of reactor compressor high and low pressure switch compressor overload...

Страница 48: ...upwards to remove it d e f g Push the electric box cover in the direction of arrow to make the clasp at the right side separate from the groove then pull it in the opposite direction to make the clasp...

Страница 49: ...the 3 screws connecting the isolation plate and chassis and then remove the isolation plate Remove the 4 screws connecting the reactor and isolation plate and then remove the reactor reactor isolatio...

Страница 50: ...he welding joint wrap the gas valve with a wet cloth completely to avoid damage to the valve caused by high temperature bolts liquid valve gas valve 9 Remove 4 way valve assy Remove the 2 screws conne...

Страница 51: ...12 Remove compressor Remove the 3 foot nuts fixing compressor and then lift the compressor upwards to remove the compressor and damping cushion Note Keep the ports of discharge pipe and suction pipe f...

Страница 52: ...0 0 758 6 66 88 33 10 63 72 2 439 111 0 737 5 63 46 34 10 2 73 2 358 112 0 717 4 60 23 35 9 779 74 2 28 113 0 697 3 57 18 36 9 382 75 2 206 114 0 678 2 54 31 37 9 003 76 2 133 115 0 66 1 51 59 38 8 64...

Страница 53: ...252 111 0 983 5 84 61 34 13 59 73 3 144 112 0 956 4 80 31 35 13 04 74 3 04 113 0 93 3 76 24 36 12 51 75 2 94 114 0 904 2 72 41 37 12 76 2 844 115 0 88 1 68 79 38 11 52 77 2 752 116 0 856 0 65 37 39 11...

Страница 54: ...4 5 23 53 74 62 11 32 101 3 22 15 362 9 24 51 41 63 10 93 102 3 13 14 342 8 25 49 19 64 10 54 103 3 04 13 323 9 26 47 08 65 10 18 104 2 96 12 306 2 27 45 07 66 9 83 105 2 87 11 289 6 28 43 16 67 9 49...

Страница 55: ...JF00301856...

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