SENEC SENEC.Home Li Series User manual

For a safe
& efcient
use of SENEC
products!
SENEC.Home Li
User Manual
Valid for: SENEC.Home Li
Series number: AU-V2-xxLI10-xxxxx
Valid in: Australia
Document version: 1.1
Publication date: 22 March 2019
Document number: TD140-038.11

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TD140-038.11 | Version 1.1 | 22 March 2019
Please read these documents carefully and observe the safety instructions!
Original in German
Impressum
All rights reserved
© Copyright:
SENEC GmbH
Wittenberger Straße 15
04129 Leipzig
Germany
SENEC GmbH is a company of EnBW Energie Baden-Württemberg AG.
National representative:
SENEC Australia
PO BOX 1514
Osborne Park DC, WA 6017
Australia
Phone: [phone]
E-mail: [e-mail]
Internet: www.senec.com.au
SENEC Australia is a society of SENEC GmbH.
This manual may only be reprinted or reproduced – even in extract – with the express written permission of SENEC GmbH.

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TD140-038.11 | Version 1.1 | 22 March 2019
1 Contents
1 Basic information.................................................................................................................................................................................. 5
1.1 Target group of this instruction..................................................................................................................................................... 5
1.2 Exclusion of liability/guarantees................................................................................................................................................... 5
1.3 Validity and storage........................................................................................................................................................................... 5
1.4 User guidance.......................................................................................................................................................................................6
1.4.1 Layout of safety instructions ........................................................................................................................................................................6
1.4.2 Gradation of safety instructions..................................................................................................................................................................6
1.4.3 Handling Instructions ......................................................................................................................................................................................6
1.5 Productidentication........................................................................................................................................................................7
1.6 Changes ...................................................................................................................................................................................................7
2 Safety........................................................................................................................................................................................................8
2.1 Intended use......................................................................................................................................................................................... 8
2.2 Use not as intended........................................................................................................................................................................... 8
2.3 Requirements on the end user ...................................................................................................................................................... 8
2.4 General safety instructions............................................................................................................................................................. 9
2.5 Safetysymbolsontheidenticationplate.............................................................................................................................10
3 Product description............................................................................................................................................................................ 11
3.1 Overview............................................................................................................................................................................................... 11
3.1.1 Product overview.............................................................................................................................................................................................11
3.1.2 Control elements and indicators ...............................................................................................................................................................12
3.2 Function description........................................................................................................................................................................ 13
3.3 Technical data..................................................................................................................................................................................... 14
4 Use of control elements and indicators.......................................................................................................................................16
4.1 Front display control........................................................................................................................................................................16
4.1.1 Front display indicator...................................................................................................................................................................................16
4.1.2 Front display operation................................................................................................................................................................................. 17
4.2 Switching off the battery during prolonged non-utilisation............................................................................................17
4.3 Reading the IP address in the front display............................................................................................................................18
4.4 Reading status indicators on the front display.....................................................................................................................18
4.5 Operating conditions....................................................................................................................................................................... 21
5 Online Monitoring mein-senec.de .................................................................................................................................................21
6 Mains backup operation (optional).............................................................................................................................................. 30
7 Maintenance ....................................................................................................................................................................................... 30
7.1 Testing the storage activity ..........................................................................................................................................................30
7.2 Maintenance of the battery module......................................................................................................................................... 31
7.3 Cleaning................................................................................................................................................................................................ 31
8 Disposal..................................................................................................................................................................................................31
9 Index of abbreviations.......................................................................................................................................................................32

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TD140-038.11 | Version 1.1 | 22 March 2019
Change history
Document version Amendments Valid from
1.0 Initial version 04 May 2018
1.1 Impressum changed; Short-circuit current in chapter. 3.3 "Technical Data"
changed
22 March 2019

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TD140-038.11 | Version 1.1 | 22 March 2019
1 Basic information
This User Manual provides all information that is required for the intended use and operation of the unit. Along with the basic
informationyouwillndinformationonsafety,aproductoverview,anoperatinginstructionaswellasinformationonthemain-
tenanceof the SENEC.Home Li and a glossary.
Please read this information carefully!
1.1 Target group of this instruction
This user manual is addressed to the end user. Only the end user may put the unit into service and use thefunctions as described
inthisusermanual.Self-installationandmodicationstothesystembytheenduser(providedheisnotanelectrician)areex-
pressly prohibited.
1.2 Exclusion of liability/guarantees
Intheeventofafaultyinstallationorincorrectoperationandusenotasintended,hazardscanariseforlifeandlimbofthe
user or third parties or damage may be caused to the installation or other assets. Setting up, installation, commissioning
andmaintenanceaswellastheuseoftheSENEC.HomeLicannotbemonitoredbythemanufacturer.Forthisreason,SENEC
acceptsnoresponsibilityorliabilityforanydamage,costsandlossesarisingasaresultoftheincorrectinstallation,incorrectop-
erationorusenotasintended.Thesameappliesincaseofdamagescausedbyforcemajeure(e.g.storm,overvoltage,lightning
orre)
TheuseoroperationoftheSENEC.HomeLiandits(additional)functionalscopeisalwaystheresponsibilityoftheendcustomer.
Likewise,SENECacceptsnoliabilityforinfringementsofpatentlaworofthirdpartyrightsarisingfromthenon-intendeduseof
the components.
ThedeliveryandpurchaseconditionsofSENECshallbeapplicable.Fordetailedinformation,pleaseaccessthedocumentsavail-
able at mein-senec.de.
1.3 Validity and storage
ThisusermanualisvalidforallAustralianSENEC.HomeLiequipment(fromJanuary2018).
AlwayskeepthisdocumentathandnearbytheSENEC.HomeLi,inordertohaveeasyaccesstotheinformation,ifrequired.

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TD140-038.11 | Version 1.1 | 22 March 2019
1.4 User guidance
Any measures against risk of serious personal injury or material damage or any additional information shall be listed in the
respective safety instructions in this user manual. They are directly stated before an action sequence or a description is provided
jointly with the action.
All measures described in this manual must be followed in order to prevent dangers!
1.4.1 Layout of safety instructions
The safety instructions have the following layout:
Type and source of danger!
Consequences when the instructions are not followed
ä Measure to avoid danger.
1.4.2 Gradation of safety instructions
The warning instructions vary according to the type of danger:
Signal word panel Kind of danger
Warns against an imminent threat of danger, which will lead to death or serious injuries if not
avoided.
Warns against a possibly dangerous situation which will lead to death or serious injuries if not
avoided.
Warns against a possibly dangerous situation which will lead to minor or moderate injury if not
avoided.
Warns against a possibly dangerous situation which will lead to damages to property or the envi-
ronment, if not avoided.
1.4.3 Handling Instructions
Handling instructions urge you to perform an action or a workstep. Always perform the handling instructions individually and in
the sequence as provided. Handling instructions areconstrued as follows:
1. Guidance concerning an action
Indication of result (if required)

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TD140-038.11 | Version 1.1 | 22 March 2019
1.5 Product identication
Foranyquestions,pleasesubmittheserialnumbertoSENEC.ItisfoundontheidenticationplateoftheSENEC.HomeLi.
SENEC.Home V2 Li
2.5/5.0/7.5/10.0
UAC 3 x 230 V AC nom.
UDC 48 V (39 V - 52.3 V)
IAC 3 x 16 A
IDC 55 A
C5at 30 °C 56.7 Ah p. module
f50 Hz
Tmin - Tmax 5 °C - 40 °C
Pmax 1 x 3680 W
Smax 1 x 3680 VA
PBackup power 1000 W
Power factor 0.8ind - 0.8cap
Ingress
protection IP30
Protection class I
Pollution degree 2
Battery type Lithium-manga-
nese-cobalt-oxide
Inverter
topology
Isolated by
transformer
Year of
manufacture 2019
Installation company:
Serial number:
Address:
Date of installation:
Name of installer:
SENEC GmbH
Wittenberger Straße 15 | 04129 Leipzig (Germany)
Tel.: [phone]
Mail: servic[email protected]om
WEEE: DE20792790
Labeling of the circuit breaker at the
premises main switchboard:
Circuit breaker size:
TD110-057.20
A
Fig. 1 Type plate with series number
ThetypeplateoftheSENEC.HomeLiislocatedattheleftexternalsideoftheunitandisafxedbytheinstallerforrecording
the data. It contains the most important safety instructions as well as brief information regarding conformity and technology.
Also,contactinformationofSENECisprovided.
1.6 Changes
ChangestotheSENEC.HomeLiareexpresslyprohibited,unlessSENEChasauthorizedsuchchangesinwriting.

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2 Safety
The following safety instructions must be observed without fail to avoid injury or damage and to guarantee the long-term and
safe operation of the SENEC.Home Li.
2.1 Intended use
TheSENEC.HomeLi-storageunitanditscomponentshavebeendevelopedanddesignedinaccordancewiththerecognized
norms and legal regulations. The SENEC.Home Li operates as a chargecontrol and inverter from direct current to alternating cur-
rentandinversely.Thebatterymodulesstoretheelectricpowerthatisgeneratedfromapowergenerationplant(photovoltaics/
combinedheatandpowerplant/smallwindturbine).Ifrequired,thestoredenergyissuppliedtothedomesticpowernetworkin
the form of electricity.
2.2 Use not as intended
TheuseoftheSENEC.HomeLionorinthewater(e.g.boats,ships,offshoreinstallations),intheairorformobileusesisexpressly
prohibited.ModicationswhicharenotexpresslyauthorisedbySENECinwriting,arenotpermitted.Warrantyandguarantee
termsarevoidedbyconversionsormodicationsperformedwithoutpermission.
The use of third-party rechargeable batteries is not permitted.
The SENEC.Home Li does not havean uninterrupted power supply and thus must not be used fortheoperation of medical equip-
ment.
The SENEC.Home Li must only beoperated in parallel with the mains and does not permit stand-aloneoperation. Backup power
is available to enable the use of electric power in case of a power shutdown. Note that in case you use the optional power emer-
gencypack,thereareextracostsfortheadditionalpackage,additionalmaterialandinstallation.
2.3 Requirements on the end user
Improperoperationmayleadtophysicalhazardtoyourselfortothirdparties.Thismayalsocausedamagestothesystem.Asan
enduser,youshouldmeetthefollowingrequirements:
• Only operate the SENEC.Home Li as described in this user manual.
• The operation of the SENEC.Home Li by persons with a limited mental capacity is prohibited.
• Children may not use the SENEC.Home.
• TheSENEC.HomeLimaynotbeopenedbytheenduser,unlessheisanelectrician.
• AllrepairsmayonlybeperformedbyserviceengineerswithSENECcertication.

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2.4 General safety instructions
Pleasereadthefollowingsafetyinstructionscarefullytopreventinjuryanddamage,sothatthelong-termandsafeoperation
of the SENEC.Home Li is guaranteed.
Hazard due to improper use!
Only use the SENEC.Home Li according to its intended use.
ä Onlyusethesysteminoriginalcondition,withoutarbitrarymodicationsandinatechnically
awlesscondition.
Danger to life from electric shock!
Touching of live parts inside the SENEC.Home Li may lead to fatal injuries due to electric shock.
ä Do not remove the covers.
ä Do not touch the components.
ä Never reach beneath covers.
Instruction!
TheSENEC.HomeLihasaventilationoutletonthefrontcoverandatthetopside,allowingcon-
vection. Components may be damaged if the ventilation outlets are covered.
ä Do not place any objects on top of the ventilation outlets
ä Do not cover the ventilation outlets
ä Keep a minimum distance of 100 mm above the SENEC.Home Li storage unit
Hazard of injuries and burning injuries due to escape of
electrolyte!
The battery modules in the system are protected by an integrated battery management system
toensuresafeoperation.Inspiteofthecarefuldesign,thebatterycellsinsidethebatterymodule
may corrode or suffer thermal damages due to mechanical failure.
Possible:
• Excessive heat development on the surfaceof the battery cells
• Escape of electrolyte
• Escapingelectrolytemayigniteandcauseare
• Thesmokeofremaycauseirritationtotheskin,eyesandneck
ä Only operate the system at a temperature between 5 °C and 40 °C.
ä Donotaccesstheroomincaseofleakinguidsorgases.Nevertouchtheelectrolyte.Contact
therebrigade

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2.5 Safety symbols on the identication plate
Symbol Meaning
Observe the operating instructions!
Earth prior to use!
Warning against hazards due to the leakage of batteries!
Warning against electric voltage!
Warning against explosive materials!
Products wih this label must not be disposed of in the domestic waste!

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3 Product description
3.1 Overview
3.1.1 Product overview
OK ESC
Passive
Charge
Discharge
Error
1
2
4
3
Fig. 2 Productview,SENEC.HomeLi,frontview(left)andrearview(right)
1DC isolating switch
2Display
3Front cover
4Ventilation outlet in front cover
5Rear cable bushings
5

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3.1.2 Control elements and indicators
Element Designation Description
Display The display shows you the status messages and operat-
ing modes. The display is located on the front side of the
SENEC.HomeLi,atthetop.
A description of the viewed contents is found in Chapter
4.4 Reading status indicatorson the front display, page
18.
DC isolating switch The DC isolating switch disconnects the battery mod-
ule from the SENEC.Inverter (battery inverter). The
battery is connected to the system when the switch
is in the "ON" position. When the switch is in the
OFF position, the battery is isolated from the sys-
tem and is being neither charged nor discharged.
CAUTION:AfterdisconnectingtheDCisolatingswitch,wait
at least 60 seconds before reconnection!
Instruction!
TheDCisolatingswitchisnotamainswitch.AfterdisconnectingtheDCpower,thelithium
modules continue their operation. An emergency charge is not allowed. This may lead to the deep
discharge of the module.
ä Forthecompletedisconnectionfromthepowersupply,disconnectthebatterymoduleviathe
"Switch-off"function(seeChapter4.1.2Frontdisplayoperation,page17)andtheB16A
domestic fuse.
Instruction!
ä Do not use the DC isolating switch for restarting the SENEC.Inverter.
OK ESC
Passive
Charge
Discharge
Error
I ON
O OFF

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3.2 Function description
Storage of current from power generation systems
WhentheSENEC.HomeLiisconnectedtothepowergenerationsystem,electricpowerissuppliedtothebatterymodules.Pre-
requisite is that he generator unit feeds thegrid-conformant alternating current tothe domestic power network. It can beeither
beuseddirectlyinthedomesticpowernetworkorstoredtemporarilyinthebatterymodules.Ifrequired,thesystemsupplies
the stored power to the domestic grid.
Controlling the energy ow
TheelectronicsystemcontrolsprimarilytheenergyowintoandoutoftheSENEC.HomeLi.Additionally,thechargecontrolad-
juststheenergyowintherstline,basedonthemeasuringvaluesatthegridfeedpoint.
Converting direct current to alternating current
TheSENEC.Inverter(integratedbatterinverter)convertsthealternatingcurrentsuppliedbythepowergeneratorplant into
direct current. It is then stored in the battery modules. Electricity drawn from the system to supply the domestic power network
is converted back into alternating current and fed to the domestic grid.
Charge electronics
Thecontrolofthecharginganddischargingprocessispreconguredinthesystem.Itconsistsofatransformer,controlunit
(MCU),fuses,gridandsystemprotectiondevices(automaticdisconnectiondevices)andameasuringunit.
The control communicates with the SENEC.Inverter and performs the parameter settings. The power meter measures and dis-
playsthree-phasecurrentsandvoltagesinbothdirectionsintheACgrid.Thisenablesthemeasurementofelectricityowsbe-
tweenthebatterymodules,powergenerationsystemandthedomesticusers.Alsothecharginganddischargingofthebattery
module are controlled.
Battery modules
Accordingtotheconguration,theSENEC.HomeLi isequippedwitha (SENEC.HomeLi2.5),two(SENEC.HomeLi5.0),three
(SENEC.HomeLi7.5)orfour(SENEC.HomeLi10.0)batterymodules.Thebatterymodulesstorethesuppliedenergyandrelease
it again. Each battery has an integrated battery management system which continuously monitors monitors the safety param-
etersforthemodule(temperature,currentandvoltage)toensuresmoothoperation.Itisabletoshutdownbatterychargingor
discharginginexceptionalsituations,independentlyofthesoftwarecontrollingthecompletesystem.

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3.3 Technical data
SENEC.Home Li 2.5 SENEC.Home Li 5.0 SENEC.Home Li 7.5 SENEC.Home Li 10.0
Technical data system
max. charge power (AC) 625 W 1,250 W 1,875 W 2,500 W
max. discharge power (AC) 1,250 W 2,250 W 2,250 W 2,250 W
Usable storage capacity
(kWh*/Ah)
up to 2.5 kWh/
53.42 Ah
up to 5.0 kWh/
106.84 Ah
up to 7.5 kWh/
160.26 Ah
up to 10.0 kWh/
213.68 Ah
Overall system dimensions
(W/H/D)
530 mm/1,125 mm/406 mm
Overall system weight approx. 77 kg approx. 102 kg approx. 127 kg approx. 152 kg
System weight without
battery
approx. 50 kg
Display size (W/H) 65 mm/35 mm
Mains backup operation yes, optional
Built-in VPN router yes
Operating modes Mains operation, mains backup operation (optional), standby, Off
Communication with SENEC.
Inverter
via RS-485-Bus
Measuring sensors 63 A power meter
Self-consumption 24 W
SENEC.Cloud compatible yes
Daisy-chaining possible yes, up to 4 systems (1 master + 3 slaves)
Data storage 30 years
Free monitoring yes
Fault monitoring/fault log yes, via remote monitoring
Automatic updates yes
PV inverter
control
Dynamic control of all certied PV inverters
Connection to the grid AC
Fan switch-on temperature 40 °C
Compatible with grid type TN/TN - C/TN - S/TT grids
Protection class IP30
Operating temperature 5° C to + 40° C
Relative humidity 10 - 85 % (non-condensing)
Minimum distances 300 mm to the sides, 100 mm above, 100 mm to the rear panel

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SENEC.Home Li 2.5 SENEC.Home Li 5.0 SENEC.Home Li 7.5 SENEC.Home Li 10.0
Battery/battery module
Battery technology Lithium ion (lithium-manganese-cobalt-oxide)
Rated voltage 48 V
Input voltage
(min. - max.)
51.7 -52.3 V
Output voltage
(min. - max.)
39 - 52 V
Charging current 12 A per battery module
Gross storage capacity** 2.5 kWh 5.0 kWh 7.5 kWh 10.0 kWh
Battery service life** designed for up to 20 years
Battery module dimensions
(W/H/D)
440 mm x 84 mm x 450 mm
Battery module weight 25 kg
Overtemperature protection Automatic power regulation by integrated battery management system
Deep discharge protection by an integrated battery management system
Battery protection Automatic full charge from the mains if insufcient charging current from PV/CHP/wind power
Short-circuit current
of emergency power output
in mains backup operation
20 A
High voltage category III
Contamination level 2
Battery inverter
Type SENEC.Inverter
Weight max. 27 kg
Max. efciency up to 93 %
Power factor cos φ0,8ind - 0,8cap
Number of phases 3-phase measurement
1-phase power output
3-phase compensation
Output frequency 50 Hz
Connection value 70 W
Disconnection value 40 W
Load threshold 40 W
* with constant current of 10 A and voltage from 39 Vat 25 °C
** depending on temperature and usage behaviour

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4 Use of control elements and indicators
4.1 Front display control
4.1.1 Front display indicator
OK ESC
Passive
Charge
Discharge
Error
172.168.2.125
Discharge
46.3A
46.6V
2160W
0W
0W
448W
OK ESC
Passive
Charge
Discharge
Error
172.168.2.125
Discharge
46.3A
46.6V
2160W
0W
0W
448W
1
2
3
5
6
7
8
4
Fig. 3 Overviewdisplayindicators(exemplaryvalues)
1IP address of the SENEC.Home Li
2Statusdisplay(seeChapter4.4Readingstatusindicatorsonthefrontdisplay,page18)
3Chargingordischargingcurrent(dependingonthecurrentbatterystatus-Chargingordischarging)
4Battery voltage
5Chargingordischargingoutput(arrowfrombattery=discharging,arrowtobattery=charging)
6Powerindicatorforself-generatedcurrent(e.g.,fromthePVsystem)
7Power indicator for house consumption
8Gridstatus(arrowtotheleft=gridfeed,arrowtotheright=mainssupply

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4.1.2 Front display operation
The different control elements on the front display aredescribed as follows; Also anoverview is provided on how you can activate
or inactivate your SENECO.Home Li via the front display.
Control element Description
OK ESC
Passive
Charge
Discharge
Error
The front display shows the status, IP address, battery voltage, charging and discharg-
ing current and the PV output. (see Chapter 4.1.1 Front display indicator, page 16).
OK ESC
Passive
Charge
Discharge
Error
OK ESC
Passive
Charge
Discharge
Error
Navigation:
Display lights are activated.
So far, no other navigation keys functions.
OK ESC
Passive
Charge
Discharge
Malfunction
OK
ESC
Passive
Charge
Discharge
Malfunction
Switching on:
Keep the On/Off button pressed for several seconds.
The display shows “Switch on?”.
The SENEC.Home Li now switches the SENEC.Inverter on.
Conrm with "OK".
OK ESC
Passive
Charge
Discharge
Malfunction
OK
ESC
Passive
Charge
Discharge
Malfunction
Switching off:
Keep the On/Off button pressed for several seconds.
The display shows “Switch off?”.
Press "OK" within 15 seconds
The SENEC.Home Li now switches the SENEC.Inverter off.
The status changes to "Switched off".
Duringdisconnection,anoptionisprovidedtoswitchthesystemwithitsmodules
and battery inverter into a passive state. The system is out of operation.
OK
ESC
Passive
Charge
Discharge
Error
Escape:
So far, the escape key has no function.
4.2 Switching off the battery during prolonged non-utilisation
EvenwithadisconnectedDCinsulatingswitch,whilethehousecircuitbreakerisswitchedon("Standby"operatingmode),some
currentowsfromthebatterymodules.Anemergencychargecanbeperformedviathegrid.Disconnectthecompletesystem
fromthemainstopreventdeepdischargeduringaprolongedperiodofnon-usage(period>3months,withpreviousfullcharge).
1. Inactivatethebatterymodulewiththe"Switchoff"function(seeChapter4.1.2Frontdisplayoperation,page17).
The MCU shuts down the battery module.
2. Inactivate the B 16 A fuse of the domestic grid.

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4.3 Reading the IP address in the front display
The IP address of the SENEC.Home Li provides information on how the SENEC.Home Li is connected to the network.
IP address Explanation
192.168.xxx.xxx or 10.xxx.xxx.xxx SENEC.Home Li is connected to the customer's network (e.g. behind a router or profes-
sional network).
Network error or NPU fault Network error
4.4 Reading status indicators on the front display
Status indicator Meaning
BMS shutdown The lithium modules were disconnected for safety's sake.
Battery empty Normal operating status/grid operation The SENEC storage unit will charge when an
excess of PV generation is available.
Battery full Normal operating status/grid operation The SENEC storage unit can discharge as needed.
Off The SENEC storage unit was switched off via the display.
DC-switch off DC isolating switch has been switched off.
Self-consumption The PV generation covers the current house consumption. The SENEC storage unit is
neither charged nor discharged.
Discharge Normal operating status/grid operation
Initial charge First charge after initialisation of the SENEC storage unit.
Remote shutdown The system is switched off remotely. Operation is discontinued until the disconnection has
been remedied.
Initial state The SENEC storage unit has not been congured yet and is commissioned for the rst
time.
Capacity test: discharge A capacity test is running and the battery modules will be discharged
Capacity test: charge A capacity test is running and the battery modules will be charged
Charge Normal operating status/grid operation
Absorption phase Normal operating status/grid operation The battery is practically fully charged and is
being charged at lower power until it is detected to be "Fully charged".
Lithium safe mode active The lithium modules are brought to a pre-set charge status in order to perform jobs such
as module expansions. For this purpose, the system uses the generation and home con-
sumption.
Lithium safe mode done The lithium modules have reached a pre-set charge status and are now waiting for the
termination of the safety mode.
Grid + discharge In normal operating status/grid operation. The house consumption is covered by the
mains supply and battery discharging.
Grid initialization The system initialises according to the grid. The output of the inverter decreases slowly.
Grid stabilization The system stabilises according to the grid. The inverter output decreases, as needed.

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Status indicator Meaning
Restart The system restarts within the next minute.
Emergency charge The battery charging status is too low. It will be charged with power from the mains to
protect the battery.
Off-peak charge The system charges based on the off-peak parameter setting.
Passive Neither the energy generation nor the current consumption are high enough to trigger
discharge or charging.
Peak-Shaving: wait The system reduces the battery charging actively in order to enable maximum supply.
PV + discharge Normal operating status/grid operation for concurrent PV generation. The house con-
sumption is covered by the generation and battery discharging.
Safety charge ready The SENEC storage unit is fully charged and is waiting for user input.
Software update The system performs a software update
Error message Meaning Recommended action
BMS error At least one of the lithium modules is reporting a fault. All
battery modules will be switched off for safety's sake. The
SENEC storage unit switches to Sleep mode.
A technician must be called.
BMS error
operating temperature
Battery modules have switched off due to high or low tem-
peratures.
Adjust the ambient temperature. Re-
start the equipment.
BMS Ofine The system does not receive any data from the battery
modules.
A technician must be called.
Battery voltage error The measured battery voltage is different from the battery
type.
A technician must be called.
Fault: Halfbridge A half-bridge on the SENEC.Inverter is defective. A technician must be called.
Fault: No connection to
the master
Only for daisy-chained systems: In a slave system this error
may be displayed if no connection was made to the master.
Check whether the display is activated
on the master.
A technician must be called.
Error battery inverter The SENEC.Inverter does not function properly.
• DC isolating switch Off
• Grid connection fault
No power supply from battery. Possible causes:
• Battery modules are not switched on via the POWER
switch.
• Erroneous master/slave setting on battery modules
• Faulty communication between battery modules
Communication faults. Possible causes:
• Defective cabling
• Hardware fault on SENEC.Inverter
Possible cause is a switched-off DC
isolating switch. Switch it on again.
If this is not changed, a technician must
be called.

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Error message Meaning Recommended action
Error electricity meter Communication fault with one/several power meters (ac-
cording to connection variant). Causes:
• Erroneouscongurationforthe"Housepowermeter" in
thecongurationwizard
• Erroneous power meter selection
• Faulty BUS installation
A technician must be called.
Connection error (grid-pro-
tection)
There is a grid connection fault at the mains connection,
preventing the connection to a supply network.
A technician must be called.
Rotary eld error (grid-pro-
tection)
Mains connection has detected a fault of the supply
network and is preventing connection to the grid. Possible
causes:
• Voltage too high/too low (AC cabling of insufcient
cross-sectionand/orcabletoolong,poorgridatthefeed
point into the house, too much or too little generation
and/orconsumptioninthedomesticpowernetwork)
• Frequency too high/too low
• Phase displacement between L1/L2/L3 too large
• Output capacities too high
If the error message persists (>12 h), a
technician must be called.
Relais error (grid-protec-
tion)
Grid network protection is defective and must be replaced. A technician must be called.
Error inverter communi-
cation
Communication fault between MCU and SENEC.Inverter. A DC-switch may be disconnected.
Switch it on again.
If this is not changed, a technician must
be called.
No server connection No connection to the mein-senec.de for a continuous
24 hour Internet connection. Normal operation starts up
automatically once the connection is restored.
Perform a router restart. Also check all
network connections.
If this is not changed, a technician must
be called.
Man. safety charge error An error occurred during the manually triggered safety
charging.
A technician must be called.
Emergency charge: error Error during automatic emergency charge. The battery mod-
ules will pass into sleep mode.
A technician must be called.
NPU error Communication fault between MCU and NPU. A technician must be called.
Faulty SD card Faulty SC card in the MCU. A technician must be called.
Safety charge error An error occurred during safety charging. A technician must be called.