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York DHM18CMB21S, Руководство по обслуживанию, Страница: 80 / 83

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Содержание DHM18CMB21S

Страница 1: ...AIR CONDITIONING UNITS READ AND UNDERSTAND THIS MANUAL BEFORE USING THIS INVERTER DRIVEN AIR CONDITIONING UNIT KEEP THIS MANUAL FOR FUTURE REFERENCE OUTDOOR UNIT DHM18CMB21S DHM24CMB21S DHM30CMB21S DHM36CMB21S DHM42CMB21S Model Type 03257 17 ...

Страница 2: ...d advanced information to maintain and service this inverter driven cooling or heat pump air conditioning unit which you operate as well for other models This inverter driven cooling or heat pump air conditioning unit has been designed for a specific temperature range For optimum performance and long life operate this unit within range limits This manual should be considered as a permanent part of...

Страница 3: ...5 8 5HPRYDO 3URFHGXUH 51 8 5HPRYDO 3URFHGXUH 58 8 5HPRYDO 3URFHGXUH 64 SSHQGL 71 Appendix 1 Resistance Table of Ambient Temperature Sensor 71 Appendix 2 Resistance Table of Tube Temperature Sensors 72 Appendix 3 Resistance Table of Outdoor Discharge Temperature Sensor 73 XVWRPHU 6HUYLFH 7HFKQLFDO 6XSSRUW 74 XQFWLRQ DQG RQWURO 6 7 Troubleshooting 21 Table of Contents 7 Malfunction Indicator 21 7 Ch...

Страница 4: ...orrectly injuries may occur due to a falling unit Use appropriate Personal Protective Equipment PPE such as gloves and protective goggles and where appropriate have a gas mask nearby Also use electrical protection equipment and tools suited for electrical operation purposes Keep a quenching cloth and a fire extinguisher nearby during brazing Use care in handling rigging and setting of bulky equipm...

Страница 5: ...sure the condensate hose discharges water properly If connected incorrectly it may cause leaks Do not install the unit in any place where oil can seep onto the units such as table or seating areas in restaurants and so forth For these locations or social venues use specialized units with oil resistant features built into them In addition use a specialized ceiling fan designed for restaurant use Th...

Страница 6: ...son Controls Johnson Controls uses only refrigerants that have been approved for use in the unit s intended home country or market Johnson Controls distributors similarly are only authorized to provide refrigerants that have been approved for use in the countries or markets they serve The refrigerant used in this unit is identified on the unit s faceplate and or in the associated manuals Any addit...

Страница 7: ...gas and liquid valves otherwise these devices will be damaged It is closed before shipment If the arrangement for outdoor units is incorrect it may cause flowback of the refrigerant and result in failure of the outdoor unit The refrigerant system may be damaged if the slope of the piping connection kit exceeds 15o Electrical Precautions Take the following precautions to reduce the risk of electric...

Страница 8: ...nel to the indoor or outdoor units without turning OFF the main power supply After ceasing operation be sure to wait at least five minutes before turning off the main power switch Otherwise water leakage or electrical breakdown may result Disconnect the power source completely before attempting any maintenance for electrical parts Check to ensure that no residual voltage is present after disconnec...

Страница 9: ... 2XWGRRU 8QLW DHM24CMB21S DHM30CMB21S DHM42CMB21S DHM36CMB21S DHM18CMB21S 1 Units and Features ...

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Страница 12: ...RQVWUuFWLRQ 9LHZV 35 4 32 37 1 4 27 18 32 15 19 32 13 14 32 22 1 16 14 1 2 RQVWUXFWLRQ 9LHZV 8QLW inch 35 3 32 32 3 32 23 15 32 14 7 8 12 7 16 13 1 2 21 21 32 8QLW inch DHM18CMB21S DHM24CMB21S DHM30CMB21S ...

Страница 13: ... RQVWUuFWLRQ 9LHZV 5 DHM42CMB21S DHM36CMB21S 8QLW inch 8QLW inch 16 13 16 39 1 8 36 7 32 24 1 32 14 9 16 31 1 16 15 9 16 40 42 13 16 24 27 32 17 5 16 14 1 4 15 25 32 43 14 32 ...

Страница 14: ...8K 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 valve A2 A unit gas pipe temperature sensor B2 B unit gas pipe temperature sensor C2 C unit gas pipe temperature sensor D2 D unit gas pipe temperature sensor A3 A unit liquid pipe temperature sensor B3 B unit liquid pipe temp...

Страница 15: ... the outdoor unit to exchange heat with the outdoor air and then is turned into refrigerant liquid After passing through the metering device the temperature and pressure of the refrigerant liquid will further decrease and then go through 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 be conditioned Conseque...

Страница 16: ... 2 5 1 97 9 2 7 2 25 1 DHM18CMB21S GY GRAY COMP YEGN YELLOW GREEN BN BROWN BU BLUE BK BLACK RD RED YE YELLOW WH WHITE 4YV than 30V to prevent the risk of electrical shock of terminal P DC and N DC at AP1 is higher Please don t touch any terminal when the voltage WARNING L1 6BN 7BU L2 L2 2BN N1 N2 4V U V W RD BU YE L4 L4 L4 X1 14WH 13WH 5 BK WH LX1 1 LX1 2 WH RD BU BN BK C1 BU BN BU L L3 5 5 5 L5 L...

Страница 17: ... XT1 2 XTA XTB L N N1 L N E PE N2 3 3 2 terminal when the and N DC at AP1 is voltage of terminal P DC Please don t touch any WARNING higher than 30V to prevent the risk of electrical shock WARNING 2 3 3 N2 W W V U V U COMP P AC L N2 3 2 XTC XTD 2 3 E PE N L N1 N L XTB XTA 2 XT1 LX2 1 LX2 2 N1 X1 ...

Страница 18: ... HPP LPP U V W 3 OFAN 4YV 4V1 HEAT EH 20K 20K 20K 20K 20K 20K 20K 20K TUBE A TUBE B TUBE C TUBE D EKV2 EKV3 EKV4 RT6 RT7 RT8 RT9 RT10 RT11 RT12 RT13 W1 W2 W3 W4 W5 W6 W7 W8 W9 W10 W11 W14 W15 W16 W17 W19 W20 W21 U V W W22 W23 W24 W25 W26 L XT5 XT4 XT3 XT2 XT1 LP OVERLOAD PROTECTOR DISCHARGE TEMP SENSOR RT1 SAT RT12 13 RT10 11 RT8 9 RT6 7 RT3 RT2 XT2 5 WIRING BOARD 1 XT1 EH 4YV L LP HP1 EKV1 4 MAIN...

Страница 19: ...e 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 valve 12 Communication interface with indoor unit 13 Communication neutral wire 14 Live wire of power 15 supply Neutral wire of power supply 16 Reactor interface1 17 Reactor interface2 3ULQWHG LUFXLW RDUG Ɣ 723 9 Ɣ 27720 9 DHM18CMB...

Страница 20: ...e of 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 Input live wire interface 21 22 Input neutral wire interface PFC input live wire interface PFC input neutral wire interface High voltage protection interface Temperature sensor interface of unit A l...

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Страница 22: ...TUBE E Terminals of tube temperature sensor 16 HEAT Teminals of compressor band heater 17 L1 1 Terminals of reactor s brown wire 6 OVC COMP Terminals of overload protector 7 LPP Terminals of low pressure switch 8 HPP Terminals of high pressure switch 9 4V1 Terminals of 4 way valve 10 COM Terminals of communication 11 OFAN1 Terminals of fan 18 FUSE3 Fuse of fan 19 L2 2 Terminals of reactor s blue w...

Страница 23: ... 5 6FKHPDWLF LDJUDP Ɣ 27720 9 ...

Страница 24: ...d for at least 80 seconds When the quantity of running indoor units is changed the unit will enter the control described in 1 3 5 1 and 1 3 5 2 When the compressor stops the outdoor fan runs at present speed and stops after 1 minute 1 2 Dry Mode 1 2 1 The dry conditions and process are the same as those in cooling mode 1 2 2 The status of 4 way valve De engergized 1 2 3 The temperature setting ran...

Страница 25: ...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 is the basic mode No matter which indoor unit operates first the unit will run in heating mode 2 2 Overload Protection Function When the tube temperature is a little low the compressor raises the operation frequency when the tube temperature is a little high the compre...

Страница 26: ...otection error code The error code will be cleared after 1 minute the unit will restart and then detect if there is still phase lock out protection If the phase lock out protection is detected continuously 6 times the compressor will not restart but can resume running only after resetting of the main power to the outdoor unit If the running time of the compressor is longer than 7 minutes the prote...

Страница 27: ...de to cooling mode or dehumidification mode the entire system will stop first then restart under the UHTXLUHG PRGH H HIURVWLQJ IXQFWLRQ KHQ WKH GHIURVWLQJ FRQGLWLRQ LV met WKH ZD YDOYH de energizes and WKH RXWGRRU IDQ VWRSs IWHU WKH ZD YDOYH UHYHUVHV GLUHFWLRQ WKH IUHTXHQF RI FRPSUHVVRU increases DQG WKH XQLW ZLOO VWDUW GHIURVWLQJ XQGHU the FRROLQJ F FOH I 2LO UHWXUQ FRQWURO LQ KHDWLQJ PRGH D I WK...

Страница 28: ...HUHG RQ DQG UXQV XQGHU WKH 22 PRGH LW LV possible ZLWKLQ 5 PLQXWHs WR JR WKH UHIULJHUDQW UHFRYHU PRGH E SUHVVLQJ WKH 7 EXWWRQ RQ WKH ZLUHOHVV zone FRQWUROOHU three times LQ WKUHH VHFRQGV ZLWK R GLVSOD HG RZ WR TXLW WKH UHIULJHUDQW UHFRYHU KHQ WKH UHIULJHUDQW UHFRYHU KDV VWDUWHG LW ZLOO TXLW ZKHQ WKHUH LV D VLJQDO IURP WKH ZLUHOHVV zone FRQWUROOHU RU LW KDV UXQ IRU 10 PLQXWHV 6HWWLQJ IXQFWLRQ RI ma...

Страница 29: ...rotection Ƽ 22 Complete unit frequency dropping protection Ƽ 23 Unit A frequency restriction or frequency dropping protection Ƽ Ƽ 24 Unit B frequency restriction or frequency dropping protection Ƽ Ƽ 25 Unit C frequency restriction or frequency dropping protection Ƽ Ƽ 26 Unit D frequency restriction or frequency dropping protection Ƽ Ƽ Ƽ 27 Outdoor ambient temperature sensor protection 28 Outdoor t...

Страница 30: ...valve malfunction Ƽ Ƽ 57 Unit C communication wire misconnection or expansion valve malfunction Ƽ 58 Unit D communication wire misconnection or expansion valve malfunction Ƽ 1 IPM protection malfunction Main checking point If the input voltage of the unit is within normal range If the connection wire of compressor is connected well Is it loose If the connection sequence is correct If the resistanc...

Страница 31: ...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 is above 500M Replace the compressor Replace the outdoor mainboard Please check 1 if the indoor and outdoor heat exchanges are dirty if there is obstacle to affect the radiation 2 if the indoor and outdoor fans are ru...

Страница 32: ...ed 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 induction is broken Replace the induction Replace the outdoor mainboard Malfunction is eliminated End Turn on the unit after the power supply resumes to normal situation ...

Страница 33: ...etweenthetwo 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 malfunction Replace the out door mainboard Checkiftheinductionwiringisloose ortheinductioniscutoff The induction is cut off or the wiring is loose Replace the induction or reconnect the loose wire Malfunction is e...

Страница 34: ...hart Start If the outdoor ambient temperature is above 53ć yes yes yes no no no It is a normal protection please operate the unit after the outdoor ambient temperature has changed If the indoor and outdoor radiation is insufficient Improve the radiation environment of the unit Iftheoutdoorfanisworkingnormally Check if the terminal of the fan is connected well if the fan is broken Replace fan capac...

Страница 35: ...ion 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 Eliminate the malfunction 5 Temperature sensor malfunction Main checking points ƽ If the temperature sensor is damaged or broken ƽ I f the terminal of the temperature sensor is loosended or not connected ƽ I f the mainboa...

Страница 36: ...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 ofthecompressoraccording to the wiring diagram If the refrigerant charging amount is too much Charge the refrigerant according to the service manual Eliminate the malfunction Eliminate the malfunction Replace the compresso...

Страница 37: ...tion 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 Reconnect according to the wiring diagram yes yes yes De energize change the communication wire of the well communicated indoor unit and malfunction indoor unit then energize the unit and wait for 3 min The malfun...

Страница 38: ...ed 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 the outdoor mainboard and the filter board according to the wiring diagram The connection wire is broken Replace the connection wire Check if there is power input bewtweenthenetrualwireandlive wire of the outdoor m...

Страница 39: ...elow 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 malfunction Reconnect according to the wiring diagram Check the refrigerant status if there is refrigerant leakage recharge it according to the service manual Note The detection method of the coil of the eletric...

Страница 40: ...iminate 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 desynchronizing as soon as energizing and starting The stop duration of the compressor is longer than 3min The wiring of the compressor is connected properly Reconnect the wire properly The eletric expansion valv...

Страница 41: ...troller Opened door and window Close the door and window Direct sunlight Hang a curtain or blinds over the window Too many people in the room Too many heat sources in the room Reduce the heat sources 51 1 ķ Q WKH HYHQW RI DEQRUPDO FRQGLWLRQV an odor SOHDVH VKXW RII WKH PDLQ SRZHU VXSSO LPPHGLDWHO DQG WKHQ FRQWDFW your contractor RWKHUZLVH WKH FRQWLQXRXV DEQRUPDO UXQQLQJ ZRXOG GDPDJH WKH DLU FRQGLW...

Страница 42: ...n of the electronic expansion valve The unit swishes during the cooling operation It is the sound when the refrigerant gas runs inside the unit r o d e t r a t s s i t i n e h w s e h s i w s t i n u e h T stopped It is the sound when the refrigerant gas stops running The unit swishes when it is in and after the running It is the sound when the draining system is operating The unit squeaks when it...

Страница 43: ...rror Hc Flash 6 times Hc Hc Drive Error Startup Failure Lc Flash 11 times Lc Lc Drive Error DC Fan Motor Error LA Outdoor Phase Loss Ld Flash 3 times Flash 3 times Flash 3 times Ld Ld Drive Error Compressor Stalling LE Flash 3 times Flash 3 times Flash 3 times LE LE Drive Error Over Speed LF Flash 3 times Flash 3 times Flash 3 times LF LF Drive Error IPM Reset P0 Flash 3 times Flash 3 times Flash ...

Страница 44: ...it pipe outlet temperature sensor error See Table 16 Flash 22 times b7 b7 Indoor Liquid Valve Unit n indoor pipe inlet temperature sensor error See Table 16 Flash 19 times b5 b5 Indoor See Table 16 Flash once F1 F1 Indoor See Table 16 Flash 7 times E7 E7 Indoor Error Item Outdoor Unit 88 Display Indicating LED Flashing Times 88 Display Wired Controler Display Error Type Running LED Cooling LED Hea...

Страница 45: ...times LA LA Outdoor Phase Loss Ld Ld Ld Drive Error Compressor Stalling LE LE LE Drive Error Over Speed LF LF LF Drive Error IPM Reset P0 P0 P0 Drive Error Compressor Current Protection P5 Flash 15 times P5 P5 Drive Error Communication Error between the Inverter Drive and the Main Controller P6 Flash 16 times P6 P6 Drive Error Radiator Temp Sensor Error P7 Flash 18 times P7 P7 Drive Error Radiator...

Страница 46: ...ure sensor error 24 Unit B indoor pipe inlet temperature sensor error 34 Unit C indoor pipe inlet temperature sensor error 15 Unit A indoor ambient temperature sensor error 25 Unit B indoor ambient temperature sensor error 35 Unit C indoor ambient temperature sensor error 16 26 36 17 Unit A anti freezing protection 27 Unit B anti freezing protection 37 Unit C anti freezing protection 41 Unit D com...

Страница 47: ...5HIHU WR WKH UHDO SURGXFWV IRU WKH H DFW SRVLWLRQ RI HDFK FRPSRQHQW 2QFH HUURUV DUH GLVSOD HG RQ WKH FRQWUROOHU SOHDVH VKXW RII WKH DLU FRQGLWLRQLQJ XQLW DQG FRQWDFW WKH a certified technician IRU WURXEOHVKRRWLQJ IWHU 6DOHV 6HUYLFH I WKHUH LV DQ TXDOLW RU RWKHU LVVXH please FRQWDFW your distributor ...

Страница 48: ...door 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 is sm...

Страница 49: ... run Check if swing louver of indoor unit is completely open Check if there is filth blockage to indoor outdoor filter or heat exchange fin System pipeline is blocked Mainly check the inlet and outlet of main pipe connecting with each indoor unit and capillary of indoor and outdoor units Replace the parts like filter capillary and so on Refer to Care and Maintenance Measure swing motor and signal ...

Страница 50: ... Replace the outdoor unit mainboard Replace relevant discharge temperature sensor Discharge temperature protection ƹ 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 normaR ...

Страница 51: ...eck if the condensate pipe is jammed or if water flows smoothly Y Clear the water from pipe Adjust water drainage in pipe Check if the voltage of water drainage pump end is ok Full Water Protecti on ƹ Malfunction Display F2 Failure of Evaporator Temp Sensor Check if the plug of the temperature sensor is correctly connected with socket on the mainboard N Removethe sensor to check if the resistance ...

Страница 52: ... is ok Replace mainboard of the indoor uint Replace temperature sensor Check the direction of the plug and socket ƹ 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 indoor uint...

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Страница 72: ...el on the right side Disassembly and Assembly of Outer Casing Remove the securing screws on the cover plate by using a screwdriver Remove the cover plate Remove the securing screws on the front panel by using a screwdriver Remove the front panel Remove the securing screws on the panel by using a screwdriver Remove the panel on the right side ...

Страница 73: ...g 6 Disassemble the fan blades Remove the securing screws on the grille by using a screwdriver Remove the grille Remove the securing screws on the outer casing byusing a screwdriver Remove the outer casing Remove the securing screws on the fan blades by using a wrench Remove the fan blades ...

Страница 74: ...d with compressor Disconnect the pipeline connected with compressor Disassembly and Assembly of Compressor Remark Make sure that there is no refrigerant in pipe system and the power supply is cut off before disassembling the compressor Remove the securing screws on the power cord by using a screwdriver Draw out the power cord Note Please note the color of each power cord and also the corresponding...

Страница 75: ...ce the compressor on the bottom plate Tighten the nuts using a socket wrench Remove the bolts on the compressor using a socket wrench Take down the faulty compressor from the bottom plate Steps Procedures Steps Procedures 1 Remove the 4 way valve coil Disassembly and Assembly of 4 way Valve Remove the screws on the secured coil by using a screwdriver Remove the 4 way valve coil ...

Страница 76: ... the 4 way valve and reconnect it with the pipeline 4 Install the 4 way valve coil Disconnect the 4 way valve and the connected pipe with a welding gun Take down the faulty 4 way valve Place the new 4 way valve in the right place Re weld the new 4 way valve with the pipeline Set the 4 way valve coil securely Tighten the screws with a screwdriver ...

Страница 77: ...electronic expansion valve coil Disassembly and Assembly of Electronic Expansion Valve Disconnect the electronic expansion valve and the connected pipe using a welding gun Place the new electronic expansion valve in the right place Reconnect the electronic expansion valve with the pipeline by welding Remove the electronic expansion valve coil by rotating it until the lock is unfixed Set the electr...

Страница 78: ...bly and Assembly of Vapor Liquid Separator Disconnect the liquid separator and the connected pipeline Remove the bolt securing the liquid separator using a socket wrench that fits the bolts Remove the liquid separator from the middle baffle Fix the new liquid separator on the middle baffle securely Tighten the bolt using a socket wrench and reconnect the new liquid separator with the pipeline by w...

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Страница 82: ...74 ...

Страница 83: ...Product improvement specifications and appearance in this manual are subject to change without prior notice Johnson Controls Inc USA LIT 12012184 ...

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