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Содержание DHM42CMB21S

Страница 1: ...IR 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 DHM...

Страница 2: ...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 c...

Страница 3: ...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...

Страница 4: ...rrectly 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 electrica...

Страница 5: ...ure 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 r...

Страница 6: ...on 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...

Страница 7: ...as 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 failu...

Страница 8: ...el 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 leaka...

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

Страница 10: ...HUORDG 3URWHFWRU 7KURWWOLQJ 0HWKRG 6WDUWLQJ 0HWKRG RROLQJ RUNLQJ 7HPS 5DQJH HDWLQJ RUNLQJ 7HPS 5DQJH RQGHQVHU 3LSH LDPHWHU RLO OHQJWK O KHLJKW FRLO ZLGWK DQ 0RWRU 6SHHG USP 0 2XWSXW RI DQ 0RWRU DQ 0RW...

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Страница 12: ...QVWUuFWLRQ 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 DHM30CMB...

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: ...K 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 t...

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...

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 A...

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...

Страница 18: ...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 W...

Страница 19: ...re 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 interfa...

Страница 20: ...f 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 I...

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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 press...

Страница 23: ...5 6FKHPDWLF LDJUDP 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 presen...

Страница 25: ...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 w...

Страница 26: ...t protection 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 con...

Страница 27: ...e 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...

Страница 28: ...UHG 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...

Страница 29: ...protection 22 Complete unit frequency dropping protection 23 Unit A frequency restriction or frequency dropping protection 24 Unit B frequency restriction or frequency dropping protection 25 Unit C f...

Страница 30: ...57 Unit C communication wire misconnection or expansion valve malfunction 58 Unit D communication wire misconnection or expansion valve malfunction 1 IPM protection malfunction Main checking point If...

Страница 31: ...nit 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 Repl...

Страница 32: ...d 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 broke...

Страница 33: ...tweenthetwo 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 Re...

Страница 34: ...art 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 indoor and outd...

Страница 35: ...ction 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 malfu...

Страница 36: ...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...

Страница 37: ...n 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 accord...

Страница 38: ...d 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 mai...

Страница 39: ...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 Rec...

Страница 40: ...ate 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...

Страница 41: ...ntroller 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...

Страница 42: ...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...

Страница 43: ...ror 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 Compr...

Страница 44: ...t 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 Fla...

Страница 45: ...imes 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 tim...

Страница 46: ...re 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 tem...

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Страница 48: ...or 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 indo...

Страница 49: ...un 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 o...

Страница 50: ...Replace the outdoor unit mainboard Replace relevant discharge temperature sensor Discharge temperature protection Malfunction Display E5 Compressor Overheat N Y Y Y Y Y N N N Check if compressor s con...

Страница 51: ...ck 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 Ma...

Страница 52: ...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...

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Страница 72: ...l 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 b...

Страница 73: ...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 ca...

Страница 74: ...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 b...

Страница 75: ...e 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 Procedu...

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...

Страница 77: ...lectronic 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 expa...

Страница 78: ...ly 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...

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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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