Sunville® 6000 Grid PV-Inverter
Contents
1. Introducing the Grid PV System 7 Front LCD Display Panel 1 Connection Panel 6 RS232 Connector 2 Heat sink 5 Optional Communication Port and Cover 3 3 pairs of DC inputs 4 AC Output 6000 Inverter 1 Connection Panel The connection panel contains DC and AC terminals and communication ports as detailed below 2 Heat sink Part to dissipate heat produced by the inverter 3 3 pairs of DC input terminals Each input pair consists of positive and negative terminals Refer to Installation Section for set up information 4 AC Output Delivering AC to the Public Utility 5 Optional Communication Slot and Cover An optional port to extend the communication interface for example connecting an RS485 card The port is protected by a water proof cover 6 RS232 Port Interface allows communication with computer with RS232 serial port 7 LCD Display Device to display inverter operation status Brightens your future 3 3 Front Panel LEDs There are 2 LED s on Grid tied 6000 one is green and the other is red Normally only the green LED will turn on during operation Their indicated status are explained as follows Power on green LED It lights when Inverter is running The only condition it will be dark is no power provided to inverter In this case Inverter is in shutdown mode Fault red LED Once the LED lights it means inverter is in fault or failure condition To see t2. 4600W Max power 5100W Nominal DC voltage 600 VDC Maximum PV open 750 VDC voltage MPPT range 125V to 700Vdc Working range 100V to 750Vdc Max input current 8 5ADC Operational voltage 196 253Vac Operational frequency Current distortion Power factor Conversion efficiency max European efficiency nvironment Protection degree temperature range Humidity Heat Dispersal Power consumption Acoustic noise level Function key on the panel Comm Interface MW upgrade Mechanical W x D x H mm Weight kg The product s specifications are subject to change without notice 35 Brightens your future 10 Compliance of Standards EMC DIN EN 50081 part 1 EMV interference emission EN 55014 EN 60555 part 2 EN 55011 group 1 class B DIN EN 50082 part 1 EMV interference immunity Grid Interference DIN EN 61000 3 2 Grid Monitoring Independent disconnection device MSD Mains monitoring with allocated Switching Devices according to VDEW EN DIN VDE 0126 04 99 Low Voltage Regulation DIN EN 50178 4 98 VDE 0160 will be IEC62103 DIN EN 60146 part 1 1 3 94 VDE 0558 part 11 36 11 Load Graph and Efficiency Graph The relationship between PV input voltage Verv and input power Ppv is shown in the following example Once PV input voltage is less than 447V the relation of Vev and power is Ppv W 8 5 x Vov Example Vrv is 400VDC the maximum power could take by inverter in one strin
3. Point Tracking MPPT c sssseeeeseeeeeeeeeeeeens 28 6 5 LCD Display Messages rrrnnrrrrrnrnnnnnvrnrrnnnnrrrnnnnnnrnrnnnnnnnnsennnnnnsnsnnn 29 7 Communication Interface rrrrrronnrrrronnvrrrnonvrrrnrnnvrrrrnnvrrrnnnnrrnrnnnvnnnrnnnvnnnnnns 32 7 Nese EEE EEE EEE EE EE NE 32 7 2 Optional Communications Interface rrrrrnrrnnnnnnrnnovnrrrrnnnnnnnnvnnnnn 32 Os MONDEO 33 9 SCC ATOM EE EE 35 10 Compliance of StandardsS rrrrrrronvrrronvrrnenvrrnonvrrnenvrrnenvrrnsnvrrnsnvrsnnnvnsnnnvennn 36 11 Load Graph and Efficiency Graph eernrnrrrrrrnrrrrrrnnrrnrrrnrrnrrrnvrnrrrnvrnnnrnvnnenn 37 Appendix I VDE Certification rrrrrrrrnrrrrrrnnrrrrrrnrrrrrrnnrnrrrnvrrnrrnnrrnrernvrnnernnrnsnnn 38 Brightens your future Read this User Manual before you start Fa Congratulations on purchasing 6000 Grid PV Inverter i from MPP SOLAR referred to in this manual as PV Inverter or simply the device This PV Inverter is a highly reliable product due to its innovative design and perfect quality control The device is dedicated to high demand grid linked PV systems This manual contains important information regarding installation and safe operation of this unit Be sure to read this manual carefully before using your PV Inverter If you encounter any difficulties during installation or operation please refer to this manual before contacting your local dealer or representative To obtain the lat
4. defects due to design manufacturing and components This warranty does not cover damages resulting from amp Improper transportation and delivery Improper installation Unauthorized modification testing or repairing Usage beyond that described in this manual Application beyond the scope of safety standards such as VDE UL etc amp Acts of nature such as lightening fire storm etc Repairs and or replacement of parts or the device are made at the manufacturers discretion Defective parts or malfunction discovered during installation should be presented in a written report for confirmation before applying for replacement or repair The damage report must be issued within 5 working days after receiving the PV Inverter MPP SOLAR is not responsible for damages beyond the scope of this warranty Brightens your future 3 Overview 3 1 Introducing the Grid PV System The Grid PV System is mainly composed of 4 parts the PV panels the PV Inverter the AC Connection Unit the connection Interface and a connection to the Public Utility When a PV panel is exposed to sunlight and connected to an inverter it generates DC power The PV Inverter converts DC to AC and feeds in to the Public Utility via the AC Connection unit Inverter Grid Public Utility TET ond j fe ae p DC input P Panel AC Output AC Conne ction Unit Feeding AC power to Public Utility only Brightens your future 3 2
5. 5 C v The AC grid voltage is between 196 and 253VAC 50 60Hz v Electric utility company has approved the grid connection v Qualified personnel are performing the installation v Adequate convection space surrounds the inverter v Inverter is being installed away from explosive vapors 10 Brightens your future No flammable items are to be near the inverter Inverter can be installed and operated at locations where the ambient temperature is up to 55 degrees Celsius However the optimal condition is to install inverter where ambient temperature is between 0 to 40 degrees Celsius l1 Brightens your future Mounting to the wall 1 Choose a dry place out of direct sunlight with ambient temperature between 0 and 40 C 2 Select a wall or solid vertical surface which is strong enough to support the inverter 3 The PV Inverter requires adequate cooling space for heat dispersal Reserve at least 20 cm above and below the inverter LLLLLLLLLLLLLLLLL LALLA ALLA ALLL LALLA Minimum space 20 cm Minimum space 20 cm 12 Brightens your future 4 Mark the positions of the 4 outer mounting holes onto the wall with the bracket as illustrated Using the Outer Mounting Holes Upper Mounting Holes Lower Mounting Holes Mounting Bracket 13 Brightens your future 5 To install the device to a narrow upright mark the 4 central holes at the back of the bracket Using the Central Mounting Holes Upp
6. 6000 Grid PV Inverter 4 6KW OUTPUT Installation and Operation Manual Version 1 0 Contents Read this User Manual before you start r rrrnrrrrrrnnvrrrrnnvrrrrnnnrrrrnnnvrnrrnnvrnnnnnnr 3 1 Safety IASTUCIONS sa sicczaisnedcorseshteranecesanasehexamonstewsacendenseeadidaonedadeaceutdbecsoeendeasieesec 4 2 BET TEN er 5 OE EEE NE ee eee 6 3 1 Introducing the Grid PV System rrrrrrnnnrnennrnnnnnnennrnnnnnrennrnnnnnrennnnnn 6 3 2 Introducing the Grid PV System rrrnnrnnnrrnnnnnnnnvrnnnrrnnnnnnnnrennnvnnnnnn 7 PTE nr 8 FOU en E 9 SEN a E E E E 10 5 1 Inside Inverter Package mvrunnennunnnnnnnnnvnnnnnrnnnenrnnsennuvsennnnennnnnene 10 5 2 Mounmgqvo nverter cwzxdsecesenrsecsasiesduteeacsaceqicheassenweacceunsee 10 5 3 Connecting the AC Output Cable rrrrrvnnnnnnnnnnrnovvnnrrnnnnnrrnrernnnnnnnnn 16 5 4 Connecting the PV Panel rrrnrnnnnnnnvnnrnnnnnrvnnrnnnnnrrnnnnnnnnrennnnnnnnsnnn 19 5 5 Connecting to the connection Unit evrnnnrrvvvrrnnnvrvverrnnrrreerrnnnereeen 20 5 6 Installation checklist rrrannrrnnnrrnnnnrrrnnnrnrnnnrrnnnnennnnrennnnrennnnennnnnene 20 6 Operation th Inverter secsdeqnusayswenssatedsendnasivadsesudeaneaansneneestesanssavans 22 JET 105 0 CF ea ER E 22 6 2 Operating Modes cccccseesececceeseeeeeeceeeeseeeeeeeeeeeeeeeeaeeeeeseeageeeeeeaas 22 6 3 Using the LOD DISplay sexccizciesnactetasetvnasdenaedsansndiuddacendehsescienenesenededees 24 6 4 Maximum Power
7. FLASH firmware Monitoring parameters Output power information inverter was installed Grid voltage Vac Xxx xV Grid voltage in xxx x VAC Grid frequency Frequency xx xHz Grid frequency in xx x Hz Feeding current AC Current xx xA Feeding current amount in xx x A PV array voltage Vdc xxx xxx xxxV Input voltage from PV array xxx x VDC PV array current dc xxx xxx xxxA _ Input current from PV array xxx x A System fault Isolation failure Isolation fault Earth fault of the PV panels or failure of surge voltage protection GFCI active Ground fault Leakage current on ground conductor is too high Grid failure Grid fault Grid measured data is beyond the specification voltage amp frequency LCD Display Message Continued Abnormal Grid Impedance fault 1 Grid impedance higher than the Impedance permissible value 29 some Brightens your future 2 Grid impedance change AZ is higher than limit No utility No Utility Utility is not available Input voltage too high PV over voltage Input voltage higher than the 750V Inverter fault Consistent failure Consistent fault The readings of 2 microprocessors are not consistent It could be caused by CPU and or other circuit do not function well normal value functional Output DC injection too high Injection too high EEPROM problem EEPROM Failure EEPROM inside has data access problem Communication SCI Failure The communication between MCU inside between is abnormal micro
8. PV Inverter requires very little maintenance When unexpected situation occurs please refer to the following table should further assistance be required before calling your local dealer The following table lists common fault messages that display when the fault LED is lit and their solutions Troubleshooting your PV Inverter Diagnosis and Solution Message Check the impedance between PV amp PV and Isolation ground The impedance should be larger than Fault 8Mohm If the check fails or the impedance is below 8Mohm please call service This is caused by too high ground current Unplug the PV generator from the DC input check the AC peripheral system After the cause is cleared plug PV in again and check the status of Inverter If above actions cannot clear Ground fault please call service Wait for 1 minute for Grid to come back to normal Make sure Grid voltage and Frequency meet the specifications If not please call service Grid impedance higher than the permissible value Observe the faulty condition for 1 minute If it does not restore to normal check the wires Impedance between inverter and grid Change larger wires if Fault necessary Adjust impedance parameter using the Inverter EZ control If above actions are vain please call service Grid is not connected No Utility Check grid connection such as wire and connector Check Grid usability 33 some Brightens your future Troublesh
9. d from the grid the LCD display and LEDs on the front panel do not work and the function button is inactive 4 Three Operating States Standby Waiting Normal During normal operation the PV Inverter enters a standby state at voltages below 100V Between 100V and 150V the device enters the waiting state and begins checking its own internal status The Normal state is entered when the voltage is above 150V The following example shows the LCD when the PV Panel input increases above 100V HE N The LCD first displays the model name er Model 6000 Pac 0 0W h Waiting Pac 0 0W When PV Panel provides a voltage greater than 100V the device enters the Waiting state When PV Panel provides a voltage greater than 150V the PV Inverter counts down from 20 to 0 whilst checking the internal status before entering the Normal state Checking 19 Pac 0 0W Normal State Pac XXXX XW 23 Brightens your future ME Before connecting PV Panels to DC terminals make sure the polarity of each connection is correct An incorrect connection could permanently damage the device 6 3 Using the LCD Display Use the Function Button to customize the LCD display settings or view further information about the internal status of your PV Inverter Press the Function Button to ra me N change the LCD display OAF z I I Y Pressing the Function Button during
10. er Central Mounting Holes Lower Central Mounting Holes 6 Drill the 4 marked holes in the wall and then drive in the 4 Snap Bushings Now insert the screws and tighten Outer Mounting Holes Brightens your future 7 Mount the PV Inverter onto the bracket as illustrated Safety Lock Screw 8 Insert the Safety Lock screws to fix the PV Inverter in place 9 Install the device vertically to ensure the device is properly fixed to the bracket LCD Display gt 15 Brightens your future 5 3 Connecting the AC Output Cable Connect your PV Inverter to the AC Connection unit via the AC output cable as following steps AC Output Connector AC Ouitput Cable 2 2 0mm AC connection unit consisting of breaker fuse terminals etc 1 Open the AC output cover with a screw driver 2 Draw out the AC Connector set from the Inverter 16 Brightens your future 3 Unscrew the cable lock and prepare your AC cable AC cable 4 Remove the rubber plug from inside the AC connector socket Rubber Plug no hole in it 5 Insert the provided rubber bushing with three holes into the AC connector socket 3 hole Rubber Bushing 17 Brightens your future 6 Now insert the three wires of the AC cable into the bushing holes 7 Fix the brown wire to L Line the Light blue qq wire to N Neutral and the Yellow green A E wire to G Ground Note tha
11. est level is reached the contrast starts to decrease A few seconds delay and the display automatically returns to its Normal display Normal State Pac XXXX XW Changing the Language Repeat press the Function Button Normal State until Set Language shown on LCD Press and hold the Function Button to change the language i Pac XXXX XW Set Language Pac XXXX XW i Language English Press the Function Button cycles through the available languages Pac XXXX XW After a brief period of inactivity the display returns Normal Normal State Pac XXXX XW 26 some Brightens your future Locking the display Frequency XX XHz i Pac XXXX XW Locl i Pac XXXX XW Frequency XX XHz i Pac XXXX XW AC current XX XA Pac XXXX XW Normal State Pac XXXX XW Note After 30 seconds of inactivity the backlight switches off Pressing the Function Button reactivates the backlight To lock the current display for example Frequency press and hold the Function Button for about a second The screen displays Lock then returns to the previous screen Pressing the Function Button on the locked display changes to the next screen After a few seconds of inactivity the display returns to Normal Accuracy of the LCD Reading QI The reading on the LCD is just for reference The readings during normal operation are accurate to 2 Ove
12. est manual and product information please visit our web site htto www mppsolar com Brightens your future 1 Safety Instructions 1 Risk of Electric Shock Alternating Current AC and Direct Current DC sources are terminated in this device To prevent risk of electric shock during maintenance or installation please ensure that all AC and DC terminals are disconnected Handling your PV Inverter The PV Inverter should only be handled by qualified service personnel When the PV panel is exposed to sunlight and connected to the device it generates a DC voltage charging the DC link capacitors After disconnecting the PV Inverter from the power supply and PV panel electrical charge can still reside in the DC link capacitors Qualified personnel should allow at least 60 minutes after disconnecting before handling the device Public Utility only The PV Inverter is designed to feed AC power directly to the public utility power grid Do not connect the AC output of this device to any private AC equipment Beware of Hot Surfaces Although designed to meet international safety standards the PV Inverter can become hot during operation Do not touch the heat sink or peripheral surfaces during or shortly after operation Brightens your future 2 Limited Warranty The 6000 PV Inverter comes with a 5 year warranty An optional extended warranty may be available by special request before delivery This warranty covers all
13. g is 3400W 100 200 0 400 Lastdiagramm P W 8 5xU Load Graph Ppv W 8 5 x Vpv The typical efficiency chart related to Voc and Pac is shown below Note Results may vary due to test equipment tolerances and product differences n Typical Efficiency Graph for Grid tied 6000 37
14. he conditions please refer to section 8 LCD Liquid Crystal Display Function Power on LED i Power on Fault LED Brightens your future Features Very high conversion efficiency gt 96 e 3 MPP Maximum Power Point trackers independent or parallel operation IP65 compliant for outdoor application Embedded LCD displaying status and system information Fanless design quiet operation e Stylish design Compact and unobtrusive High reliability Easy installation Maintenance free Standard RS232 optional RS485 and others Embedded ENS complying with VDE 0126 amp Internal GFCI Ground Fault Current Interrupter 5 Brightens your future Installation 5 1 Inside Grid tied 6000 Package The following items are included with your Inverter 6000 Package 1 Inverter 6000 PV Inverter 2 Installation and Operation Manual 3 4 Mounting Screws and 4 Snap Bushings 4 2 Safety lock screws 5 3 hole Rubber Bushing 6 Mounting Bracket 5 2 Mounting your Inverter 6000 i Cy Suggestions before mounting i To obtain optimal results from your PV Inverter please consider the following guidelines before installing the device Do not expose the PV Inverter to direct sunlight Direct on sunlight increases the internal temperature that may reduce A conversion efficiency v Check the ambient temperature of installation is within specified range 20 5
15. ing PV Panels to DC terminals make sure the polarity of each connection is correct An incorrect connection could permanently damage the device 5 Congratulations you have successfully installed your PV Inverter 21 Brightens your future 6 Operating the Inverter LCD Display Function Button No Utilit Power on LED Par a oo Fault LED 6 1 Auto power The PV Inverter starts up automatically once DC power from the PV Panel is sufficient There are 3 modes of operation 6 2 Operating Modes 1 Normal In this mode the PV Inverter automatically detects the system status and selects the best mode of operation If the power from the PV Panel is greater than 150VDC the supply is converted to AC fed in to the grid If the power is less than 100VDC the PV Inverter displays Waiting During the wait state the device uses minimal power from the PV Panel to monitor the system status During normal mode the green LED is on fo N frem Normal State EE Pac XXXX XW ha A a at 22 Brightens your future 2 Fault The PV Inverter s intelligent controller continuously monitors the system status Unexpected conditions such as grid problems or internal failures are displayed on the LCD and the Fault LED turns on i F N Faults are indicated by the red FAULT LED 3 Shutdown At the moment of reduced sunlight the PV Inverter automatically shuts down No power is use
16. ooting your PV Inverter Diagnosis and Solution Message 1 Check open PV voltage see if it is too close to or over 750VDC If PV voltage is less than 750Vdc and the problem still occurs please call service Consistent Disconnect PV and PV from the input start Fault the unit again SCI Failure If it does not work please call service The internal temperature is higher than specified normal value Over Reduce the ambient temperature by some Temperature appropriate and effective way Or move Inverter to a cooler location If it does not work please call service Relay Failure Disconnect PV and PV from the input start the unit again If it does not work please call service Grid DC current higher than the permissible value DC INJ High Observe the faulty condition for 1 minute If it does not restore to normal operation please call service Disconnect PV and PV from the input start the unit again If it does not restore to normal operation please call service Disconnect PV and PV from the input start High DC Bus the unit again Check if L LINE and N Neutral are mistakenly connected If so please call service Low DC Bus Ref 2 5V Fault DC Sensor Disconnect PV and PV from the input start the unit again Fault If it does not work please call service GFCI Failure 34 some Brightens your future 9 Specifications Model Grid tied 6000 Nominal output power
17. processors problem high expected The DC BUS inside is lower than low expected 2 5V reference Ref 2 5V Fault The 2 5V reference inside are abnormal voltage inside problem abnormal GFCI detection ne GFCI detection circuit is abnormal problem LCD Display Message Continued Inverter fault Model display Model xkW Inverter model xkW inverter LCD contrast setting Set Contrast Setting the contrast of inverter LCD display lock Hold the present display message 30 some Brightens your future Waiting for reconnect ant t time for reconnect to grid to grid FW version information Setting Language Set Language Set up of the display language 31 Brightens your future 7 Communication Interface 7 1 RS232 Your PV Inverter is equipped with a versatile communications interface Use Inverter 6000 EZ Control to monitor status of multiple inverters Firmware upgrades are also available via this interface Inverter 6000 is integrated with a DB9 socket for the RS232 interface Remove the DB9 socket cover before use Pin assignment of this DB9 socket is stated as below Tr Assignment 7 2 Optional Communications Interface Your PV Inverter has an expansion slot for an optional communications interface Add a Inverter RS485 card or compliant card to extend the communication functions of inverter RS232 port amp cover Communication Slot 32 Brightens your future 8 Troubleshooting Your
18. r all modes of operation please allow 5 The LCD Visibility and Ambient Temperature Temperature extremes can influence the visibility of an LCD display Visibility returns to normal within tolerable temperatures see Installation chapter 27 Brightens your future 6 4 Maximum Power Point Tracking MPPT Due to its advanced design your PV Inverter can track the maximum power from any PV Panel under any condition When the output power display is stable your PV Inverter is converting the maximum power available When the power reading fluctuates the device is tracking power changes due to varying levels of sunlight IPv A Prv VV Maximum power point 5 125 4 100 3 75 2 50 1 25 O 10 20 30 40 50 Urv V Individual PV Panel Output Graph If the output of the PV Panel is low the AC power may drift slowly It is normal because your PV Inverter continuously tracks the maximum DC power and the display reflects the varying power 28 some Brightens your future 6 5 LCD Display Messages Sporan Message in English Fraser conditions Normal working status Power off No display PV inverter is totally shutdown Vev lt 80V Standby Standby 80V lt Input voltage lt 100V Initialization amp waiting Input voltage range 100 150V during start up After PV voltage is higher than 100V inverter is waiting for feeding to grid checking feeding conditions Feeding grid MPPT FLASH FLASH
19. t all three wires ae should be at least 2 0mm All three wires should be firmly connected L for Line N for Neutral G for Ground 8 After checking the 3 wires are fixed properly push the AC output connection set back in to the Connection Panel Driver 4 screws back to fix the set 18 Brightens your future 9 Now screw on the Connector Locker to lock the bushing and cable together 5 4 Connecting the PV Panel 1 Panel String between 8 5A and 25 5A Inverter 6000 P Panel under 6 54 DC Input 6000 Inverter 1 1 2 3 3 Panel Strings under 8 5A 1 First make sure the maximum open circuit voltage Voc of each PV string is below 750VDC UNDER ANY CONDITION 2 Always connect PV Panel positive terminal to PV Inverter DC positive terminal and the PV Panel negative terminal to PV Inverter DC negative terminal 3 Each set of PV Inverter DC terminals takes a maximum DC input of 8 5A As a result 3 pairs of PV Inverter DC terminals can take a combined input of up to 25 5A 19 Brightens your future 4 To fully optimize the PV DC output set up use the following configuration guidelines a For PV DC output less than 8 5A use a single pair of PV Inverter DC terminals b For PV DC output between 8 5A and 17A use two sets of inverter DC terminals c For PV DC output between 17A and 25 5A use 3 sets of inverter DC terminals 5 5 Connecting to the connec
20. the Normal state displays the grid Normal State voltage i Pac XXXX XW Vac xxx xV Pressing the Function Button twice Pac XXXX XW reveals the grid frequency Frequency XX XHz Pressing the Function Button three Pac XXXX XW times displays the PV Panel input voltage Vidos a ff V Pressing the Function Button four times Pac XXXX XW reveals the input current Pressing the Function Button five times LAG Serna A displays the output current to the grid Pac XXXX XW C current XX XA Pac XXXX XW 24 some Brightens your future AC current XX XA Pac XXXX XW Energy XXXKWh i Pac XXXX XW Model 6000 i Pac XXXX XW Ver 00 01 i Pac XXXX XW Normal State Pac XXXX XW Adjusting the LCD Contrast Rapidly press the Function Button during the Normal state to display Normal State contrast settings i Pac XXXX XW Press the Function Button six times displays the current energy output Pressing the Function Button seven times displays the Model No of the Inverter Pressing Function Button nine times displays the firmware version Pressing the Function Button a tenth time returns to the status display To adjust the contrast settings press the Contrast Function Button again Pac XXXX XW Repeatedly press the Function Button i until the contrast reaches the desired Contrast mm mall aval Pac XXXX XW 25 some Brightens your future After the high
21. tion unit The AC connection unit is an interface between your PV Inverter and the Public Utility It may consist of an electrical breaker fuse and terminals for connection to both PV Inverter and the Public Utility This Connection unit must be designed by qualified technician to comply with local safety standards AC Output Port AC connection unit consisting of breaker fuse terminals etc AC Out Cable 220mm 5 6 Installation checklist 1 High voltages exist when the PV Panel is exposed to the sun Exposed terminals of the PV Panel are live and can cause electric shock Avoid making physical contact with live parts of the device 20 Brightens your future 2 After the PV Panels are connected to the PV Inverter the output voltage is greater than 100VDC and the AC grid is not connected to the inverter the LCD displays Model XXXXXX gt Waiting gt No Utility The RED fault LED turns on Initial Display before Connecting to the Public Utilit Function Button No Utility spe 3 Check the connection between your PV Inverter and AC Connection System And then check the connection between the Public Utility and AC Connection unit Close the AC breaker or fuse in the unit 4 Under normal operation the LCD displays hr FAM Normal State Pac AAAA JV The PV Inverter is feeding power to the grid and the green LED displays S G Before connect
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