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b. 38VMA144HDS

Figure 25 - Cooling Operation

Содержание 38VMA Series

Страница 1: ...Heat Pump System Service Manual Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 17 38VMH001...

Страница 2: ...rol 28 a Cooling Electronic Expansion Valve Control 28 b Heating Electronic Expansion Valve Control 28 4 Fan Control 29 a Cooling Fan Control 30 b Fan Control Process 30 c Heating Fan Control 30 IV Sp...

Страница 3: ...ctronic Expansion Valve Error 54 o 10Hd 20Hd Follower Unit Error 54 p 0P1 Current Leakage Error 55 q 0P1 Discharge Temperature Switch or High Pressure Protection 56 r 0P2 0H5 Low Pressure Protection 5...

Страница 4: ...I General Information 1 Model Number Nomenclature Figure 1 Model Nomenclature Outdoor Unit Figure 2 Model Nomenclature Indoor Units 4...

Страница 5: ...indoor units Capacity index of the outdoor units Keep a proper connected capacity ratio for the entire system Table 2 Connected Capacity Ratio Min combination ratio Max combination ratio 40VMH for all...

Страница 6: ...4 24 Ton Dual Module Figure 5 26 36 Ton Triple Module 4 Indoor Units Lineup Figure 6 4 Way Cassette 40VMF Figure 7 Compact 4 Way Cassette 40VMC Figure 8 High Static Duct 40VMH Figure 9 High Wall 40VMW...

Страница 7: ...VMA192HDS6 1 8 8 33 18 38VMA216HDS5 1 38VMA216HDS6 1 8 10 36 20 38VMA240HDS5 1 38VMA240HDS6 1 10 10 39 22 38VMA264HDS5 1 38VMA264HDS6 1 12 10 46 24 38VMA288HDS5 1 38VMA288HDS6 1 12 12 50 26 38VMA312HD...

Страница 8: ...II Refrigerant Circuit 1 Refrigerant Circuit Diagram Figure 17 38VMA072 096 120HDS 8...

Страница 9: ...Figure 18 38VMA144HDS 9...

Страница 10: ...re switch Used to protect the system pressure When the system pressure is too low the pressure switch will open Once the pressure switch is open compressor will stop and will restart after 12 minutes...

Страница 11: ...2 Functional Parts Layout Figure 19 38VMA072 096 120HDS 11...

Страница 12: ...Figure 20 38VMA0144HDS 12...

Страница 13: ...3 Refrigerant Flow for Each Operational Mode a 38VMA072 096 120HDS Figure 21 Cooling Operation 13...

Страница 14: ...Figure 22 Cooling Oil Return 14...

Страница 15: ...Figure 23 Heating Oil Return and Defrost 15...

Страница 16: ...Figure 24 Heating Operation 16...

Страница 17: ...b 38VMA144HDS Figure 25 Cooling Operation 17...

Страница 18: ...Figure 26 Cooling Oil Return 18...

Страница 19: ...Figure 27 Heating Oil Return and Defrost 19...

Страница 20: ...Figure 28 Heating Operation 20...

Страница 21: ...III Function and Control 1 Operation Mode Figure 29 Operation Mode 21...

Страница 22: ...erating frequency upper limit control with inverter protection control Outdoor unit fan FAN A Heating fan control Outdoor unit fan FAN B Heating fan control Four way valve ST1 ON Electronic expansion...

Страница 23: ...Ambient temperature T4 5 F T4 36 F T4 5 F OR T4 131 F T4 correction factor C 30 0 QCi Total cooling capacity for indoor units QCi AxB x C Round number Table 7 Outdoor unit cooling capacity calculation...

Страница 24: ...calculation Indoor unit capacity BTU Indoor unit capacity x 100W Indoor unit capacity HP A Indoor unit capacity BTU Indoor unit capacity x 100W Indoor unit capacity HP A 6000 15 17 0 5 36000 112 4 0 7...

Страница 25: ...3 F T1 TS 63 70 7 so B 2 T4 45 so C 100 T2A average 93 F so E 6 QHi AxB x C 1 2 x 2 x 6 2 0 x 2 x 6 x 100 38 4 Round number 39 72 outdoor unit capacity QHo QHix D D 39 x 8 8 10 17 3 Round number 18 96...

Страница 26: ...20Hz 20Hz 22 58Hz 58Hz 58Hz 3 20Hz 20Hz 20Hz 23 60Hz 60Hz 60Hz 4 20Hz 20Hz 20Hz 24 62Hz 62Hz 62Hz 5 20Hz 20Hz 20Hz 25 64Hz 64Hz 64Hz 6 20Hz 20Hz 20Hz 26 68Hz 68Hz 68Hz 7 20Hz 20Hz 20Hz 27 70Hz 70Hz 7...

Страница 27: ...17 46Hz 36 68 66 55 86 84 18 48Hz 37 70 68 56 86 84 19 52Hz 38 72 70 Table 12 Heating Compressor Control 38VMA072 096 120HDS Capacity QHr Frequency Capacity QHr Frequency 38VMA072 38VMA096 38VMA120 38...

Страница 28: ...2Hz 31 62 60 50 86 84 13 44Hz 32 63 61 51 87 85 14 46Hz 33 64 62 52 88 86 15 48Hz 34 66 64 53 89 87 16 52Hz 35 67 65 54 90 88 17 54Hz 36 68 66 55 92 90 18 56Hz 37 70 68 56 92 90 19 58Hz 38 72 70 NOTES...

Страница 29: ...The system will check the maximum discharge temperature every 2 minutes 4 Fan Control Table 17 Fan Steps Fan Steps Rotating Speed 38VMA072 096HDS 38VMA120HDS 38VMA144HDS 0 0 0 0 0 0 0 1 250 0 250 0 2...

Страница 30: ...2 b Fan Control Process Figure 30 Fan Control Process NOTE When compressor ramps up fan speed will be at the initial step for 90 seconds Then the fan will be controlled per the fan control process c H...

Страница 31: ...fan FAN A T4 and capacity control Outdoor unit fan FAN B T4 and capacity control Four way valve ST1 ON Electronic expansion valve EXV A Heating EXV control Electronic expansion valve EXV B Heating EXV...

Страница 32: ...ormal control Four way valve ST1 ON OFF ON Electronic expansion valve EXV A Normal control 480P Normal control Electronic expansion valve EXV B Normal control 480P Normal control Electronic expansion...

Страница 33: ...0P 0P Solenoid valve SV4 OFF OFF Solenoid valve SV7 OFF OFF Ending conditions 12 minutes 12 minutes 3 Overload Control To maintain the required set point the air flow of all indoor units are set to lo...

Страница 34: ...lenoid valve SV4 OFF Solenoid valve SV7 OFF Ending conditions Follower unit is required to operate Table 30 In Heating Operation Component Follower unit operation Compressor OFF Outdoor unit fan FAN A...

Страница 35: ...otection Control When Pe 7 25 psi outdoor unit will stop and the error code P2 is displayed 3 Discharge Pipe Protection Control This discharge pipe protection control is used to protect the compressor...

Страница 36: ...plays error code P3 Model A A B B C C D D E F MV5 H072 120DXN1 33A 30A 32A 29A 30A 25A 27A 24A 33 5A 35A MV5 H144DXN1 INV 31A 29A 30A 27A 28A 24A 25A 22A 31 5A 35A MV5 H144DXN1 INV1 20A 18A 18A 16A 17...

Страница 37: ...erating priority of outdoor units With the outdoor unit rotation control the system ensures that every outdoor unit has equal run hour making sure the oil is balanced between the individual outdoor un...

Страница 38: ...S6 00 Automatic search address Default 01 Manual search address 10 Clear indoor units address S7 0 Reserved S8 0 Reserved S10 00 Reserved S13 00 Reserved S16 00 Balance mode Default 01 High efficienc...

Страница 39: ...ystem check Forced cooling Forced heating Refrigerant recycle Refrigerant amount check Automatic refrigerant charging 2 How to Set Advanced Mode Codes 1 Press and hold SW4 button for 5 seconds and the...

Страница 40: ...Default _n82 Low static pressure mode Reserved _n83 Medium static pressure mode Reserved _n84 High static pressure mode Reserved _nb_ Temperature unit setting _nb1 Temperature unit C _nb2 Temperature...

Страница 41: ...close the gas valve quickly _n23 Refrigerant recycled to piping Enter Refrigerant recycle to piping _n23 mode and all indoor valves will open c Snow Blowing Function 1 Press SW5 button on spot check...

Страница 42: ...munication chip 0H2 0H3 Incorrect number of ODUs Displayed on the header unit only 0H7 Incorrect number of IDUs 0H8 High pressure sensor error 0Hb Low pressure sensor error 10F1 20F1 PTC error 0F3 Tem...

Страница 43: ...ication error between header unit and follower unit display on follower unit 4 Possible causes Incorrect address setting of ODU Communication lines between ODUs is not installed correctly Wiring betwe...

Страница 44: ...Ph 60Hz 3 Error definition Communication Error between ODU and IDU 4 Possible causes Communication lines between ODU and IDU are installed incorrectly Improper power supply for IDU Damaged communicati...

Страница 45: ...8VMA HDS6 1 460V 3Ph 60Hz 3 Error definition and inspection The temperature sensor T3 or T4 on main board is short or damage The test voltage should be 4 95V or 0 05V 4 Possible causes Loose connectio...

Страница 46: ...38VMA HDS5 1 208 230V 3Ph 60Hz 38VMA HDS6 1 460V 3Ph 60Hz 3 Error definition Voltage of the ODU is not within the acceptable range 4 Possible causes Improper voltage Lack of power supply phase for the...

Страница 47: ...f 20HO 10H0 Communication Error Between Main Control Board Chip and Compressor Drive Chip 1 Error display ODU display 10H0 20HO 2 Applicable models 38VMA HDS5 1 208 230V 3Ph 60Hz 38VMA HDS6 1 460V 3Ph...

Страница 48: ...er of ODUs 1 Error display ODU display 0H2 or 0H3 displayed on header unit only 2 Applicable models 38VMA HDS5 1 208 230V 3Ph 60Hz 38VMA HDS6 1 460V 3Ph 60Hz 3 Error definition 0H2 The number of physi...

Страница 49: ...cally connected indoor units to an outdoor unit does not match the ENC3 S12 setting 4 Possible causes Incorrect number of IDUs set for the main board of the ODU Duplicated addresses exist for the IDUs...

Страница 50: ...8VMA HDS6 1 460V 3Ph 60Hz 3 Error definition 4 In the condition of unit operation or T4 10 when the detected HIGH PRESS 0 3MPa lasts for 20 seconds the high pressure sensor fault is reported 5 Possibl...

Страница 51: ...1 208 230V 3Ph 60Hz 38VMA HDS6 1 460V 3Ph 60Hz 3 Error definition Detect the voltage value of low pressure sensor for open or short circuit If so a fault will be reported 4 Possible causes The low pre...

Страница 52: ...ower on the DC bus voltage is outside the allowable range for more than 10 seconds 38VMA HDS5 1 208 230V 3Ph 60Hz 150 500V 38VMA HDS6 1 460V 3Ph 60Hz 300 900V 5 Possible causes Improper disconnected o...

Страница 53: ...e sensor is damaged or shorted The test voltage is 4 95V or 0 05V 0F3 T5 Liquid tube temperature sensor error 0F4 T6 Sub cooler outlet temperature sensor error 0F5 T7 Compressor return gas temperature...

Страница 54: ...electronic expansion valve is installed incorrectly Improper wiring of the solenoid coil for electronic expansion valve Damaged electronic expansion valve or solenoid coil Damaged main board o 10Hd 20...

Страница 55: ...HDS5 1 208 230V 3Ph 60Hz 38VMA HDS6 1 460V 3Ph 60Hz 3 Error definition Current leakage on ODU 90 100mA and LED1 flashes on the leakage protection board 4 Possible causes Abnormal insulation resistance...

Страница 56: ...High pressure due to excess refrigerant in the system High compressor discharge temperature caused by lack of refrigerant in the system Damaged main board Improper operation of sub cooler valve result...

Страница 57: ...egistered value of low pressure sensor on the main board is 1 45 psi 0H5 error is reported when 0P2 occurs 5 times with in a period of 100 minutes 4 Possible causes The low pressure error is caused by...

Страница 58: ...nt out of allowable range 4 Possible causes Stop valve is closed Improper power supply voltage Incorrect wiring for the solenoid valve Damaged electromagnetic valve Damaged main board Damaged module b...

Страница 59: ...ischarge temperature sensor on the main board is 239 F 0H6 is reported when 0P4 occur 3 times within a 100 minute period 4 Possible causes High discharge temperature caused by lack of refrigerant in t...

Страница 60: ...on Error is reported when the maximum value registered by the tube temperature sensor T3 on the main board is 149 F normal value for T3 131 F 4 Possible causes High temperature for the refrigerant in...

Страница 61: ...whether the following are normal Fan motor of ODU Fan board Power supply of fan board Signals between fan board and main board 4 Possible causes Check wiring between the main board to the fan board p...

Страница 62: ...witch off all the powers Check whether the wiring from main board to fan board and between fan boards are connected or not Check whether the PN terminal DC310V power of fan board is normal or not Chec...

Страница 63: ...oard After the fan runs for ten seconds check to see if the red indicator LED2 of fan board is lighted or not YES Replace the power circuit of fan board NO check whether after the fan runs for thirty...

Страница 64: ...her the signal lines from main board to fan board and between fan boards are connected or not Check whether the CN2 terminal DC310V power of fan board is normal or not Check whether the PN terminal DC...

Страница 65: ...the fan board After the fan runs for ten seconds check whether the red indicator LED2 of fan board is lighted or not YES Replace the Power circuit of fan board NO After the fan runs for thirty seconds...

Страница 66: ...n board Tf 172 4 F and 0C7 is reported when 0PL occur 3 times within 100 minutes 4 Possible causes Clogged fin of radiator resulting in poor heat transfer Left right fan connected in reverse order dur...

Страница 67: ...Caution Turn off the power switch before connecting or disconnecting the connector Failure to do so could damage the board 67...

Страница 68: ...for more information If L0 L9 protection occur 3 times within a 60 minute period 10H4 or 20H4 will be reported on the digital display of the main board Compressor A Module Protection Compressor B Modu...

Страница 69: ...transient variation 15Hz between the former moment 2S and the next moment 16 L9 Protection for setting speed difference between transient variation and actual operation 15Hz 17 Possible Causes Imprope...

Страница 70: ...Caution Turn off the power switch before connecting or disconnecting the connector Failure to do so could damage the board 70...

Страница 71: ...ould damage the board NOTES 6 Model 38VMA HDS5 1 208 230V 3Ph 60Hz L1 Error will be reported when it is lower than 150VDC the under voltage setting value for DC bus 7 Model 38VMA HDS6 1 460V 3Ph 60Hz...

Страница 72: ...ould damage the board NOTES 1 Model 38VMA HDS5 1 208 230V 3Ph 60Hz L2 Error will be reported when it is higher than 500VDC the over voltage setting value for DC bus 2 Model 38VMA HDS6 1 460V 3Ph 60Hz...

Страница 73: ...Caution Turn off the power switch before connecting or disconnecting the connector Failure to do so could damage the board 73...

Страница 74: ...Caution Turn off the power switch before connecting or disconnecting the connector Failure to do so could damage the board 74...

Страница 75: ...Caution Turn off the power switch before connecting or disconnecting the connector Failure to do so could damage the board 75...

Страница 76: ...ating outside the allowable limits allowable limits cooling 5 125FDB heating 4 64FWB 4 Possible causes The ODU ambient temperature exceeds the allowable operational limit Improper connection at the se...

Страница 77: ...VIII Appendix 1 Wiring Diagram Figure 36 38VMA072 096 120HDS5 1 77...

Страница 78: ...Figure 37 38VMA144HDS5 1 78...

Страница 79: ...Figure 38 38VMA072 096 120HDS6 1 79...

Страница 80: ...Figure 39 38VMA144HDS6 1 80...

Страница 81: ...2 Electronic Control Box Layout Figure 40 38VMA072 096 120HDS5 1 Figure 41 38VMA144HDS5 1 81...

Страница 82: ...Figure 42 38VMA072 096 120HDS6 1 Figure 43 38VMA144HDS6 1 82...

Страница 83: ...Figure 44 Main control board layout Figure 45 ENC1 Outdoor unit addressing 83...

Страница 84: ...Figure 46 ENC4 network addressing Figure 47 ENC3 S12 Indoor unit quantity setting 84...

Страница 85: ...Figure 48 S5 Running mode priority setting Figure 49 S6 Auto addressing 85...

Страница 86: ...Figure 50 S11 anti snow setting Figure 51 S16 Mode setting 86...

Страница 87: ...Figure 52 S17 Heating mode setting Figure 53 S18 Cooling mode setting 87...

Страница 88: ...1 4 92 1 0 40 91 4 6 98 2 68 181 4 1 07 4 41 3 2 86 7 0 42 93 2 6 69 2 73 183 2 1 03 4 43 5 0 81 7 0 45 95 0 6 40 2 79 185 0 1 00 4 45 6 8 77 0 0 47 96 8 6 13 2 84 186 8 0 97 4 46 8 6 72 6 0 50 98 6...

Страница 89: ...3 61 37 4 155 20 0 25 131 0 16 32 1 65 224 6 3 02 3 63 39 2 147 60 0 26 132 8 15 73 1 69 226 4 2 94 3 66 41 0 140 40 0 27 134 6 15 16 1 73 228 2 2 86 3 69 42 8 133 50 0 28 136 4 14 62 1 78 230 0 2 78...

Страница 90: ...3 92 0 96 7 81 2 54 34 8 33 06 0 98 7 32 2 62 37 7 31 45 1 02 6 98 2 68 39 2 30 69 1 04 6 54 2 76 42 1 29 25 1 08 6 23 2 82 43 5 28 58 1 10 5 84 2 90 46 4 27 29 1 14 5 46 2 98 47 9 26 68 1 16 5 20 3 0...

Страница 91: ...5 12 31 1 98 261 0 11 45 2 06 275 5 10 66 2 15 290 0 9 94 2 24 304 5 9 26 2 33 319 0 8 64 2 41 333 5 8 06 2 50 348 0 7 52 2 59 362 5 7 01 2 68 377 0 6 54 2 76 391 5 6 09 2 85 406 0 5 67 2 93 420 5 5...

Страница 92: ...IX Bill of Material BOM 1 38VMA072HDS5 1 38VMA096HDS5 1 38VMA120HDS5 1 Figure 54 3 Phase Heat Pump Exploded View 92...

Страница 93: ...Figure 55 Control Board Views 93...

Страница 94: ...4 way valve 1 15500216000123 9 Pipe temperature sensor assembly 1 11201007000277 10 Connecting pipe assembly 1 15127000005498 11 Oil return capillary assembly 1 15427000000282 12 Oil balance pipe ass...

Страница 95: ...ss DC motor 2 11002015000086 50 Front beam 1 12227000001065 51 E part box assembly 1 17227000000800 51 1 1 Three phase bridge 1 11201418000002 51 1 2 Frequency converter module drive board brush glue...

Страница 96: ...sensor assembly 1 11201007001786 57 Left panel assembly 1 12227000006792 58 Temperature sensor clipper 1 12127000000013 59 Room temperature sensor assembly 1 11201007000195 60 Network Controller 1 17...

Страница 97: ...2 38VMA144HDS5 1 Figure 56 3 Phase Heat Pump Exploded View 97...

Страница 98: ...98...

Страница 99: ...Figure 57 Control Board Views 99...

Страница 100: ...embly 1 11201007000277 9 Connecting pipe assembly 1 15127000005498 10 Oil return capillary assembly 1 15427000000006 11 Oil balance pipe assembly 1 15427000000925 12 Suction service valve assembly 1 1...

Страница 101: ...813 48 Condenser assembly 1 15827000000124 49 Propeller fan 1 12100105000384 50 Brushless DC motor 2 11002015000086 51 Front beam 1 12227000001065 52 E part box assembly 1 17227000000799 52 1 1 Three...

Страница 102: ...mbly 1 12227000005986 58 Top front cover 1 12227000000850 59 Front lower panel 1 12227000000779 60 Pipe temperature sensor assembly 1 11201007001786 61 Left panel assembly 1 12227000006792 62 Temperat...

Страница 103: ...3 38VMA072HDS6 1 38VMA096HDS6 1 38VMA120HDS6 1 Figure 58 3 Phase Heat Pump Exploded View 103...

Страница 104: ...Figure 59 Control Board Views 104...

Страница 105: ...09 8 4 4 way valve 1 15500216000123 9 Pipe Temp sensor assembly 1 11201007000277 10 Connecting pipe assembly 1 15127000005498 11 Oil return capillary assembly 1 15427000000282 12 Oil balance pipe asse...

Страница 106: ...49 Brushless DC motor 2 11002015000316 50 Front beam 1 12227000001065 51 E part box assembly 1 17227000000798 51 1 1 Three phase bridge 1 11201418000002 51 1 2 Frequency conversion module drive board...

Страница 107: ...sor assembly 1 11201007001786 57 Left panel assembly 1 12227000006792 58 Temperature sensor clipper 1 12127000000013 59 Room temperature sensor assembly 1 11201007000195 60 Network Controller 1 172112...

Страница 108: ...4 38VMA144HDS6 1 Figure 60 3 Phase Heat Pump Exploded View 108...

Страница 109: ...109...

Страница 110: ...re sensor clipper 1 12900103000008 5 Temperature controller of discharge pipe side 2 17400513000066 6 Discharge pipe assembly of compressor 1 15427000001924 6 1 Needle valve 1 15500301000008 6 2 Press...

Страница 111: ...Solenoid 2 15500213000156 24 Connecting pipe assembly 1 15127000005538 25 EXV assembly 1 15427000001703 25 1 Electric expansive valve EEV 2 15500213000156 26 Plate to fix pipe 1 12227000001124 27 Fix...

Страница 112: ...t 1 17400401000190 53 E part box assembly 1 17227000000801 53 1 Filter board assembly 1 17127000001702 53 2 Power transformer 1 11203103000148 53 3 Wire joint 1 17400401000169 53 4 Wire joint 1 174004...

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