Midea MDV-V105W/DN1 General Information Manual Download Page 5 | Manualshive

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MCAC-VTSM-2013-12 R410a Full DC Inverter Mini VRF

General Information 5

3. Features

3.1 Wide application

The Full DC Inverter mini VRF system is a highly efficient solution for small commercial buildings requiring
heating and cooling of up to 7 zones with one outdoor unit. Such as villa, restaurant, school etc.

Midea offers a variety indoor unit, about 100 models of 10 types. Capacity ranges are from 1.5kW to 16 kW. It
is full compliance with residential and light commercial place. Our systems can operate up to 130% of
capacity which allows any system to be designed to the customers and applications needs.

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Summary of Contents for MDV-V105W/DN1

Page 1: ...ents Part 1 General Information 2 Part 2 Specifications Performance 11 Part 3 Installation 74 Part 4 Troubleshooting 88 Manufacture reserves the right to discontinue or change at any time specifications or designs without notices and without incurring obligations Библиотека СОК ...

Page 2: ...R410a Full DC Inverter Mini VRF MCAC VTSM 2013 12 2 General Information Part 1 General Information 1 Product Lineup 3 2 Nomenclature 4 3 Features 5 4 Indoor Units Lineup 9 ...

Page 3: ...dth 990 Height 966 Depth 336 62 67 220 240V 1ph 50Hz MDV V105W DN1 Width 990 Height 966 Depth 336 74 81 220 240V 1ph 50Hz MDV V120W DN1 Width 900 Height 1327 Depth 320 95 106 220 240V 1ph 50Hz MDV V140W DN1 Width 900 Height 1327 Depth 320 95 106 220 240V 1ph 50Hz MDV V160W DN1 B Width 900 Height 1327 Depth 320 100 111 220 240V 1ph 50Hz MDV V180W DN1 Width 900 Height 1327 Depth 320 107 118 220 240V...

Page 4: ...M 2013 12 4 General Information 2 Nomenclature M D V V 105 W D N1 Note the actual cooling capacity please refer to the nameplate Refrigerant type N1 R410A Inverter Type D DC Inverter W Outdoor unit Cooling Capacity 100W Inverter System Midea ...

Page 5: ...gs requiring heating and cooling of up to 7 zones with one outdoor unit Such as villa restaurant school etc Midea offers a variety indoor unit about 100 models of 10 types Capacity ranges are from 1 5kW to 16 kW It is full compliance with residential and light commercial place Our systems can operate up to 130 of capacity which allows any system to be designed to the customers and applications nee...

Page 6: ...ed discharge air grille and air deflector making higher air volume and lower operation sound 3 5 Quick warm up cool down design and less temperature fluctuation Utilizing the inverter compressor benefits the system can reach full load quickly and shorten warm up or cool down time for an immediate comfortable air solution Less temperature fluctuation will create a better living environment Used acr...

Page 7: ...e communication wiring between indoor outdoor units can be shared It s easy for the user to retrofit the existing system with a centralized control by simply connecting to outdoor unit 3 10 Auto address setting function The addresses of indoor units can be set automatically by outdoor unit Wired controller and wireless controller can enquire and modify the address of each indoor unit Longest pipin...

Page 8: ...efrigerant to the system when it needs to be done The self diagnosis function detects malfunctions in major locations in the system and displays the type of malfunction and location This allows service and maintenance to be performed more efficiently 3 14 Space saving The Mini VRF units are more compact resulting in significant savings in installation space It is particularly suitable for small of...

Page 9: ...mpact four way cassette Four way cassette 15 18 22 28 36 45 56 71 80 90 100 112 140 Capacity 100W Duct type Medium static pressure duct High static pressure duct 15 18 22 28 36 45 56 71 80 90 100 112 140 160 Capacity 100W Floor standing Ceiling Floor Console Cased floor standing Uncased floor standing Ceiling floor console 22 28 36 45 56 71 80 90 112 140 160 ...

Page 10: ... D panel Wall mounted R panel 15 22 28 36 45 56 71 80 90 125 140 Note If ODU connect only one IDU the capacity of IDU should be not more than ODU If ODU connect more than one IDU the capacity of each IDU should be not more than 8kW for refrigerant uniform distribution Due to continuous improvement specifications are subject to change without prior notice ...

Page 11: ...tions Performance 11 Part 2 Specifications Performance 1 Specifications 12 2 Dimensions 15 3 Service Space 16 4 Piping Diagrams 17 5 Wiring Diagrams 18 6 Field Wiring 21 7 Capacity Tables 22 8 Electric Characteristics 71 9 Sound Levels 72 10 Operation Limits 73 ...

Page 12: ... RLA A 9 7 9 7 13 5 Crankcase W 25 25 25 Refrigerant oil ml FV50S 670ml 200ml FV50S 670ml 200ml FV50S 870ml 630ml Outdoor fan motor Model WZDK170 38G 1 WZDK170 38G 1 WZDK100 38G Type DC Motor DC Motor DC motor Brand Panasonic Panasonic Panasonic Insulation class E E E Safe class IPX4 IPX4 IP23 Input W 195 195 2 100 Output W 170 170 2 85 Rated current A 1 6 1 6 2 0 9 Speed r min 820 820 800 Outdoor...

Page 13: ...8 Connection wiring Power wiring mm 2 3 core 4 0 3 core 4 0 3 core 4 0 Signal wiring mm 2 3 core shielded wire 0 75 3 core shielded wire 0 75 3 core shielded wire 0 75 Ambient temperaure Cooling 15 48 Heating 15 27 Sale Model MDV V140W DN1 MDV V160W DN1 B MDV V180W DN1 Code 220095100891 220095102360 220095103540 Power supply V Ph Hz 220 240V 50Hz 220 240V 50Hz 220 240V 50Hz Cooling Capacity kW 14 ...

Page 14: ...435 1030 1456 435 1030 1456 435 Net Gross weight kg 95 106 100 111 107 118 Refrigerant Type R410A R410A R410A Charged volume g 3900 3900 4500 Throttle type Electronic expansion valve Electronic expansion valve Electronic expansion valve Design pressure MPa 4 4 2 6 4 4 2 6 4 4 2 6 Refrigerant piping Liquid side Gas side mm Ф9 53 Ф15 9 Ф9 53 Ф19 1 Ф9 53 Ф19 1 Max refrigerant pipe length m 100 100 10...

Page 15: ...ll DC Inverter Mini VRF Specifications Performance 15 2 Dimensions 80 105 model 120 180 model Unit mm MODEL A B C D E F G H 80 105 990 624 354 336 396 366 1075 966 120 140 160 180 900 600 348 320 400 360 1327 H G A H A B C D E F ...

Page 16: ...ons Performance 3 Service Space Unit mm 300 600 300 2000 Wall or obstacle Maintain channel Air outlet Air inlet Air inlet Single unit installation 600 2000 300 Parallel connect the two units or above 2000 500 3000 3000 300 Parallel connect the front with rear sides ...

Page 17: ...Performance 17 4 Piping Diagrams High pressure switch Oil seperator Oil return capilary Compressor Low pressure switch Low pressure liquid accumulator can Condensor High pressure liquid accumulator can Electronic expansion valve Electronic expansion valve Evaporator ...

Page 18: ...R410a Full DC Inverter Mini VRF MCAC VTSM 2013 12 18 Specifications Performance 5 Wiring Diagrams 8 105 model ...

Page 19: ...MCAC VTSM 2013 12 R410a Full DC Inverter Mini VRF Specifications Performance 19 120 160 model ...

Page 20: ...R410a Full DC Inverter Mini VRF MCAC VTSM 2013 12 20 Specifications Performance 180 model ...

Page 21: ...MCAC VTSM 2013 12 R410a Full DC Inverter Mini VRF Specifications Performance 21 6 Field Wiring ...

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Page 64: ...45 8 25 2 49 9 87 3 03 11 44 3 57 12 25 3 96 13 06 4 35 14 63 5 24 16 25 6 01 48 8 25 2 55 9 87 3 06 11 44 3 61 12 25 4 02 13 06 4 47 14 63 5 48 16 25 6 15 60 5 7 06 0 99 8 44 1 15 9 81 1 33 10 50 1 42 11 19 1 54 12 56 1 72 13 94 1 98 2 7 06 0 99 8 44 1 16 9 81 1 36 10 50 1 44 11 19 1 55 12 56 1 75 13 94 1 99 0 7 06 1 01 8 44 1 18 9 81 1 38 10 50 1 46 11 19 1 58 12 56 1 78 13 94 2 02 2 7 06 1 03 8...

Page 65: ...1 77 11 63 1 98 23 5 91 1 04 7 06 1 21 8 19 1 40 8 75 1 50 9 31 1 60 10 44 1 80 11 63 2 02 25 5 91 1 06 7 06 1 24 8 19 1 43 8 75 1 53 9 31 1 65 10 44 1 89 11 63 2 16 27 5 91 1 08 7 06 1 29 8 19 1 51 8 75 1 63 9 31 1 75 10 44 2 01 11 63 2 30 29 5 91 1 14 7 06 1 36 8 19 1 60 8 75 1 73 9 31 1 86 10 44 2 14 11 63 2 45 31 5 91 1 20 7 06 1 44 8 19 1 69 8 75 1 84 9 31 1 98 10 44 2 28 11 63 2 61 33 5 91 1...

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Page 69: ...5 14 18 1 99 15 88 2 26 17 64 2 55 16 8 96 1 26 10 72 1 50 12 42 1 76 13 30 1 89 14 18 2 03 15 88 2 30 17 64 2 59 18 8 96 1 28 10 72 1 53 12 42 1 79 13 30 1 93 14 18 2 06 15 88 2 35 17 64 2 65 20 8 96 1 30 10 72 1 56 12 42 1 83 13 30 1 96 14 18 2 10 15 88 2 40 17 64 2 72 21 8 96 1 31 10 72 1 57 12 42 1 84 13 30 1 98 14 18 2 12 15 88 2 43 17 64 2 82 23 8 96 1 33 10 72 1 60 12 42 1 88 13 30 2 05 14 ...

Page 70: ... 27 11 33 1 43 12 62 1 57 6 6 41 0 86 7 67 1 01 8 89 1 15 9 50 1 21 10 11 1 29 11 33 1 45 12 62 1 61 8 6 41 0 88 7 67 1 03 8 89 1 17 9 50 1 24 10 11 1 31 11 33 1 48 12 62 1 67 10 6 41 0 90 7 67 1 04 8 89 1 19 9 50 1 26 10 11 1 35 11 33 1 52 12 62 1 69 12 6 41 0 91 7 67 1 06 8 89 1 21 9 50 1 29 10 11 1 37 11 33 1 54 12 62 1 72 14 6 41 0 92 7 67 1 07 8 89 1 23 9 50 1 31 10 11 1 39 11 33 1 57 12 62 1...

Page 71: ...17 1 7 MDV V105W DN1 50 220 240 V 198V 253V 22 30A 9 7 0 17 1 7 MDV V120W DN1 50 220 240 V 198V 253V 30 40A 13 5 0 2 1 8 MDV V140W DN1 50 220 240 V 198V 253V 30 40A 13 5 0 2 1 8 MDV V160W DN1 B 50 220 240 V 198V 254V 30 63A 16 1 0 2 1 8 MDV V180W DN1 50 220 240 V 198V 254V 32 63A 16 1 0 2 1 8 Remark TOCA Total Over current Amps A MFA Max Fuse Amps A RLA Rated Locked Amps A OFM Outdoor Fan Motor FL...

Page 72: ...VRF MCAC VTSM 2013 12 72 Specifications Performance 9 Sound Levels Model Noise level dB A Height m MDV V80W DN1 56 1 0 MDV V105W DN1 57 1 0 MDV V120W DN1 57 1 2 MDV V140W DN1 57 1 2 MDV V160W DN1 B 57 1 2 MDV V180W DN1 59 1 2 1m H ...

Page 73: ...I n d o o r t e m p e r a t u r e D B Heating 15 20 Notes 1 If the system is running in cooling mode when the ambient temperature is lower than 5 or higher than 48 the units will stop running for protection control 2 These figures base on the operation conditions between indoor units and outdoor units Equivalent pipe length is 5m and height difference is 0m Precaution The indoor relative humidity ...

Page 74: ... 12 74 Installation Part 3 Installation 1 Precautions 75 2 Accessories 76 3 Outdoor unit installation 77 4 Piping installation 79 5 Electric Wiring Installations 84 6 Outdoor Unit Wiring 86 7 Test Running 87 8 Precautions on Refrigerant Leakage 87 ...

Page 75: ...ation may result in water leakage electric shock or fire Turn off the main power supply switch or breaker before attempting any electrical work Make sure all power switches are off Failure to do so may cause electric shock Connect the connecting cable correctly If the connecting cable is connected in a wrong way electric parts may be damaged When moving the air conditioner for the installation int...

Page 76: ... the terminals Be sure to provide grounding Do not connect ground wires to gas pipes water pipes lightning rods or ground wires for telephone cables Conform to the regulations of the local electric company when wiring the power supply Inappropriate grounding may cause electric shock Do not install the air conditioner in a location subject to a risk of exposure to a combustible gas If a combustible...

Page 77: ...o not install the unit in a place full of machine oil Do not install the unit in a place full of sulphuric gas Do not install the unit in a place where high frequency radio waves are likely to be generated as from audio equipment welders and medical equipment 3 2 Installation space unit mm Please keep away from the following place or malfunction of the machine may be caused There is combustible ga...

Page 78: ...al are for explanation purpose only They might be slightly different from the air conditioner you purchased depending on model The actual shape shall prevail 3 3 Water Outlet Four condensed water outlets on the chassis for selection display as the follow figure 6 0 c m Fix with bolt 600 2000 300 2000 500 3000 3000 300 300 600 300 2000 Wall or obstacle Maintain channel Air outlet Air inlet Air inle...

Page 79: ...ing support rubber blanket beside the inner outlet pipe cover of the machine while back side getting out pipes Undersurface outlet pipe the knock out should from inside to outside and then piping and wiring through this Pay attention to the piping the fat connecting pipe should out from the largest hole otherwise the pipes will be rubbed Please do the moth proofing for the knocked out hole to avoi...

Page 80: ...The first line Branch Pipe Outdoor unit Pipe Length from the nearest branch pipe equivalent length Maximum pipe equivalent length from the first line branch pipe Maximum pipe equivalent length Indoor Unit to Indoor Unit Drop Heihgt a A L2 L1 B C D E L3 L4 L5 b c d e f The second cennect methond Indoor unit Outdoor unit Drop HEIGHT between indoor unit and uutdoor unit Maximum pipe equivalent length...

Page 81: ...nit is more than 15m choose the second connecting method The pipe between the indoor units to the closest branch must be less than 15m Table 1 Indoor unit branch pipes selection a f A Capacity of indoor units kW A kW Gas Side Φ Liquid Side Φ Wall mounted 1 5 4 5 12 7 Flaring nut 6 4 Flaring nut Wall mounted 5 6 15 9 Flaring nut 9 53 Flaring nut Four way cassette type 2 2 4 5 12 7 Flaring nut 6 4 F...

Page 82: ...90m gas side mm liquid side mm The first line branch pipe gas side mm liquid side mm The first line branch pipe A 16 Φ15 9 Φ9 53 FQZHN 01D Φ19 1 Φ9 53 FQZHN 01D 16 A 23 Φ19 1 Φ9 53 FQZHN 01D Φ22 2 Φ9 53 FQZHN 02D Note Main pipe L1 can be selected form table 2 and table 3 the larger size should be finally selected The straight distance between copper pipe turning and the contiguous branch pipe is a...

Page 83: ...indoor unit connection Liquid Side Piping Diameter Refrigerant to be Added Perimeter Piping Φ6 4 0 023kg Φ9 53 0 060kg Φ12 7 0 120kg Φ15 9 0 180kg Φ19 1 0 270kg Φ22 2 0 380kg Note Additional refrigerant volume of branch pipe is 0 1kg per item Consider the liquid side of divergent pipe only 4 8 Leak detection Use soap water or leak detector to check every joint whether leaks or not Note A is low pr...

Page 84: ... wire terminal side of power transformer and end voltage side of unit should be less than 2 If its length could not be shortened thicken the power wire Voltage discrepancy between phases shall not pass 2 rated value and Current discrepancy between highest and lowest phase should be less than 3 rated value 5 2 Selection of wiring 1 The selection of wiring area shall in accordance with the requireme...

Page 85: ...ic pipe 15 20 1 5m 1m 25 32 2m 1 5m 40 50 2 5m 2m 5 4 Indoor unit power supply wiring 5 5 Indoor Outdoor unit signal wire wiring Note Refrigerant piping system indoor unit indoor unit connection signal wires and indoor unit outdoor unit connection signal wire are in the same system When power cord is parallel with signal wire please put them into separate wire distribution pipes and leave a proper...

Page 86: ...isconnection device having an air gap contact separation in all active conductors should be incorporated in the fixed wiring according to the National Wiring Regulation Caution Employ an electrical engineer for wiring Complete wiring according to national electrical standards To reduce interference use a three core shielded twisted pair as the outdoor unit signal cable Do not use a multi core cabl...

Page 87: ...ckness 0 44 kg m3 for R410A Confirm the critical thickness through follow steps and take necessary actions 1 Calculate the sum of the charge volume A kg Total Refrigerant volume of 10HP factory refrigerant volume super addition 2 Calculate the indoor cubage B m3 as the minimum cubage 3 Calculate the refrigerant thickness Counter measure against over high thickness 1 Install mechanical ventilator t...

Page 88: ...3 12 88 Troubleshooting Part 4 Troubleshooting 1 PCB ports instructions 89 2 PCB parts instructions 93 3 Function setting dial switches instructions 96 4 LED on PCB instructions 97 5 PCB Introduction 98 6 Error code table 100 7 Troubleshooting 102 ...

Page 89: ...utdoor fan port DC380V 15V 14 CN30 Communication port between indoor units DC2 5 5V 15 CN29 Communication port between outdoor unit and indoor unit DC2 5 5V 16 CN13 Signal input port of system low pressure high pressure detect switch DC0 5V in dynamic change 17 CN8 Discharge temperature detection port of the inverter compressor DC0 5V in dynamic change 18 CN9 Outdoor temperature condenser coil tem...

Page 90: ... units DC 5V 15 CN10 Communication port between indoor unit and outdoor unit DC 5V 16 Signal input port of AC input current 17 CN1 Detect port of radiation fin DC 5V 18 CN6 Signal input port of system low pressure detect switch 19 CN7 Signal input port of system high pressure detect switch 20 Discharge temperature detect port of converter compressor DC 5V 21 CN8 Detect port of ambient temperature ...

Page 91: ...uction No Content Port voltage 1 CN3 PCB power supply output port 220V 2 CN4 PCB power supply output port 220V 3 CN7 Load output port SV6 0V or 220V 4 CN13 Load output port 4 way valve STF1 AC 220V 5 CN35 Load output port crankcase heating AC 220V 6 CN31 Load output port single way valve AC 220V ...

Page 92: ... port fan down DC 380V 12 CN51 Transformer voltage detect output port DC 380V 13 CN12 High low pressure detect switch DC 5V 14 CN24 Heat sink temperature sensor T6 DC0 5V in dynamic change 15 CN8 Compressor discharge temperature sensor T5 DC0 5V in dynamic change 16 CN9 T3 T4 temperature sensor DC0 5V in dynamic change 17 CN10 Communication port between indoor unit and outdoor unit DC 5V 18 CN30 C...

Page 93: ...T5 discharge temperature Actual value if it is more than one hundred it will be only display the hundreds digit and the tens digit 9 The surface temperature of the cooling fin 10 EXV opening degree Actual Value Display value 8 11 Current value Actual value 12 Voltage AD value Actual value 13 T2 average temperature Actual value 14 Total quantities of the indoor units Actual value 15 The quantities ...

Page 94: ...nment temperature Actual value 8 T5 discharge temperature Actual value if it is more than one hundred it will be only display the hundreds digit and the tens digit 9 The surface temperature of the cooling fin 10 EXV opening degree Actual Value Display value 8 11 Current value Actual value 12 Voltage AD value Actual value 13 T2 average temperature Actual value 14 Total quantities of the indoor unit...

Page 95: ...d capacity of the indoor unit 4 The required capacity of the revised outdoor unit 5 T3 piping temperature Actual value 6 T4 environment temperature Actual value 7 T5 discharge temperature Actual value if it is more than one hundred it will be only display the hundreds digit and the tens digit 8 The surface temperature of the cooling fin 9 EXV opening degree Actual Value Display value 8 10 Current ...

Page 96: ...19 Display 3 Function setting dial switches instructions 80 105 model 120 160 model SW3 definition Auto Addressing Dial SW 1 definition Auto Addressing Dial SW3 1 ON Obtain network address automatically OFF Obtain network address manually 2 ON Revocation indoor unit network address OFF 180 model SW4 definition Auto Addressing Dial SW3 1 ON Obtain network address automatically OFF Obtain network ad...

Page 97: ...refers to the following picture LED1 Malfunction indicator lamp of inverter module The lamp will be off if the system running is normal And it will be on if the inverter module is faulty and the error code will display on digital tube LED2 Running indicator lamp of inverter module The lamp will be on if the system running is normal LED 2 Red LED 1 Green LED 2 Red LED 1 Green IR341 chip ...

Page 98: ...C Inverter Mini VRF MCAC VTSM 2013 12 98 Troubleshooting 5 PCB Introduction 80 105 model 120 160 model IPM Module Drive Board Main PCB Filter Board PFC Module PFC Module IPM Module Drive Board Main PCB Filter Board ...

Page 99: ...MCAC VTSM 2013 12 R410a Full DC Inverter Mini VRF Troubleshooting 99 180 model Filter Board Main PCB PFC Module IPM Module ...

Page 100: ...egion run for more than 5 minutes in Heat mode 80 105 180 model E7 120 160 model Eb There are two times E6 fault in 10 minutes recovery after power off 80 105 180 model E8 120 160 model P1 High pressure protection All models P2 Low pressure protection All models P3 Compressor current protection All models P4 Compressor discharge temperature protection All models P5 Condenser T3 high temperature pr...

Page 101: ...80 model L8 Frequency difference in one second 15Hz protection 80 105 180 model L9 Frequency difference between setting speed and running speed more than 15Hz protection 80 105 180 model Note P6 display on digital tube automatically L0 L9 these error codes will display on digital tube only through check button ...

Page 102: ...ain PCB 2 IR341chip is on the IPM module LED display H0 E3 Communication malfunction between main PCB chip and IR341 chip Whether the LED indicator on the drive board flash normally Replace the drive board NO Whether the signal wiring between the module board and drive board is connected normally Connect wire again NO YES Disconnect the communication wire between IPM module board and drive board A...

Page 103: ...d fan Warning Code 8 4 2 1 Address 0 1 2 3 4 5 6 7 8 9 Capacity 100W 22 28 36 45 56 71 80 90 112 140 LED displays E2 Communication malfunction between indoor unit chip and outdoor unit chip Check the communication wire sequence is correct or not Connect the wire again NO Check whether there is disconnection YES Replace NO Check whether the three cored shielded wire is used as the communication wir...

Page 104: ...ss the button for 10 seconds If the timer and warning lights are normally on that means the capacity code is 5 4 1 and the capacity of indoor unit is 71 100W 2 5HP 2 If the signal is weak connect a 120Ω resistor between P and Q of the farthest indoor unit or connect a 0 5 1 5uF capacitor between P and Q of outdoor unit Installation refers to the following picture Note Communication wires should be...

Page 105: ...ter measuring resistance value of sensor find that T4 thermo bulb is earth continuity and further discover that the thermal cable of T4 sensor is punched by bolt as follows LED displays E4 Whether the wire body is broken PCB is disabled Pipe temperature T3 ambient temperature T4 sensor malfunction Connect the wire again YES NO Judge whether temperature sensor pin connects properly YES Connect agai...

Page 106: ...7 4 E5 Voltage protection malfunction for all models LED displays E5 Voltage protection malfunction Whether the input voltage is 180 260V NO Replace the filter board and check whether the unit can operate normally Check the power supply YES Replace the main PCB YES OK NO ...

Page 107: ...e wiring diagram to check whether the DC fan wiring is correct or not NO Connect again YES O Check whether power source and voltage of DC fan are normal Check whether the voltage with black red terminal connected to the DC fan plug is 277 354V when standby 是 YES Check the Voltage between DC fan motor s white terminal and black terminal is 15V when standby YES Replace IPM module Replace the main PC...

Page 108: ... is higher than normal value compressor makes noise pressure meter do not display steady LED displays E7 Discharge sensor malfunction Check whether discharge temperature sensor s head is inside the sleeve or its wiring is connected to the main PCB properly NO Connect again YES Check whether the discharged sensor is normal NO Replace discharge sensor YES Check the operation conditions of the unit m...

Page 109: ...on E9 is for 80 105 180 model E0 is for 120 160 model The malfunction may be caused by two reasons 1 The EEPROM is not inserted well 2 Outdoor main board is broken LED display E9 E0 EEPROM malfunction Replace outdoor main PCB Check whether the EEPROM is inserted well Insert the EEPROM well NO YES ...

Page 110: ...the outdoor ambient temperature is higher than the unit s operating condition when heating mode YES Belongs to system normal protection NO Check whether the refrigerant volume of the system is added according to the requirement and check if the refrigerant leaks YES Connect the pipe again check leakage insure the pressure add the refrigerant NO Check whether the condenser is blocked YES Rectify th...

Page 111: ...ce the high pressure switch YES Check whether the cooling system operates normally Replace the main PCB NO Whether high pressure of the system is too high YES Stop the system NO Whether side air duct of outdoor unit meets the standard NO Rectify the air duct YES Whether the heat exchanger needs cleaning YES Clean it NO Whether the pipeline is blocked YES Rectify the pipeline Whether the throttle p...

Page 112: ...ng system can work as normal YES NO Check whether the outdoor ambient temperature is too low YES Stop the unit NO Whether refrigerant system leaks YES Leakage detecting add nitrogen or refrigerant into the system si si will sound evidently if leaks heavily Use soap water the combination of water and detergent or electronic detector to detect if leaks slightly Whether the refrigerant pipe is blocke...

Page 113: ...e power wire is more than 30A Check cooling system is normal or not YES Check whether the outdoor ambient temperature is too high YES Stop the unit NO NO Check whether the outdoor unit ventilates well YES Make the outdoor unit ventilates well NO Whether the heat exchanger needs cleaning or not YES Clean heat exchanger NO If the refrigerant pipe is blocked or not YES Remove the refrigerant pipe and...

Page 114: ...emperature of the compressor Check whether the discharged temperature of the compressor is higher than 115 C NO Check whether the compressor discharged temperature sensor connects with PCB correctly according to the wiring diagram YES Check whether resistance of compressor discharged temperature sensor is correct or not NO Connect correctly again YES Replace outdoor PCB Whether the discharged temp...

Page 115: ...ther condenser temperature is higher than 62 degrees for 3 seconds NO Check whether the resistance of condenser temperature sensor is correct YES Replace the outdoor main PCB NO Replace the temperature sensor YES Whether outdoor temperature is too high higher than 43 degrees or not Replace outdoor PCB NO Whether heat exchanger needs cleaning NO If refrigerant pipe is blocked or not Clean heat exch...

Page 116: ...fier bridge is normal or not NO Replace rectifier NO YES Check each reactor is connected normally If wiring is damaged the resistance of two ports is NO Replace connecting wire YES Check if wiring connection between main PCB and IPM module is fasten or not YES Check whether wiring connection of the compressor is connected right and firmly YES Replace IPM module and check whether the system can ope...

Page 117: ...ction L8 frequency difference in one second more than 15Hz L9 frequency difference between the real and the setting frequency more than 15Hz L0 module protection L5 Zero speed protection L7 Phase sequence error P6 will disappear in one minute Then press the check button to find the specific error code when P6 disappears Check module and compressor Check power supply of module Check power supply of...

Page 118: ...e works replace the PCB Module check 1 DC voltage between P and N should be 296V to 324V 2 DC voltage between 1 and 2 should be 510V to 580V 3 First adjust multi meter to diode position put the red pen on the 1 point N terminal put black pen on the 3 or 4 or 5 point the value should be approximate 0 378 if the value is 0 the IPM is broken And then change the red pen to the 2 point P terminal the v...

Page 119: ... is malfunction then check the inverter module If the compressor could not start normally that means the compressor is malfunction the go to step 3 to check the compressor Step 3 Check the compressor Measure the resistance between each two of U V W terminals all the resistance should be the same and equal to 0 9 5 Ohms Fig A and Fig B Measure the resistance between each of U V W terminals to groun...

Page 120: ...en fasten the wires If wires are OK replace the PCB 7 14 3 L2 troubleshooting Step 1 Check the DC voltage between P and N terminal the normal value should be 510V 580V if the voltage is higher than 580V go to step 2 Step 2 Check the voltage between the capacitor the normal value should be 510V 30V or 310V 30V if not in the range then the PCB has malfunction it needs to be replaced Turn the measure...

Page 121: ...ature protection Check whether average temperature of evaporator is higher than 63 degrees for 50 seconds or not NO Check whether the resistance of evaporator temperature sensor is correct YES Replace outdoor main PCB NO Replace temperature sensor YES If indoor temperature is too high or not exceeds the using range of the unit Replace outdoor main PCB NO Whether the heat exchanger needs cleaning N...

Page 122: ...ls LED displays P8 Typhoon protection YES Belongs to normal protection When air conditioner is standby or in malfunction stopping status check if there is strong air blows the fan phenomenon NO Check whether the fan motor is normal YES Replace outdoor main PCB or transfer board of the fan NO Replace fan motor ...

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