Battery error codes
Codes and status lights from the manufacturers’ own manuals — Tesla, GivEnergy, AlphaESS, Pylontech, Sigenergy and more — with the few checks a homeowner can safely make.
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23 brand hubs · 58 code and status-light pages from the manufacturers’ own manuals. Each brand hub lists its researched codes. Homeowners may read the code, check the isolator and consumer-unit breaker are on, check the app and Wi-Fi, and restart the way the manual allows — never open enclosures or touch DC wiring.
AlphaESS battery error codes
AlphaESS systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →02Brand hubAnker battery error codes
Anker systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →03Brand hubBLUETTI battery error codes
BLUETTI systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →04Brand hubDuracell Energy battery error codes
Duracell Energy systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →05Brand hubEcoFlow battery error codes
EcoFlow systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →06Brand hubEnphase battery error codes
Enphase systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →07Brand hubGoodWe battery error codes
GoodWe systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →08Brand hubLux Power battery error codes
Lux Power systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →09Brand hubPylontech battery error codes
Pylontech systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →10Brand hubSMA battery error codes
SMA systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →11Brand hubSofar battery error codes
Sofar systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →12Brand hubVictron battery error codes
Victron systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →13Brand hubZendure battery error codes
Zendure systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →14Brand hubFox ESS battery error codes
Fox ESS systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →15Brand hubGivEnergy battery error codes
GivEnergy systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →16Brand hubGrowatt battery error codes
Growatt systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →17Brand hubHuawei battery error codes
Huawei systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →18Brand hubmyenergi libbi battery error codes
myenergi libbi systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →19Brand hubSigenergy battery error codes
Sigenergy systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →20Brand hubSolaX battery error codes
SolaX systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →21Brand hubSolis battery error codes
Solis systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →22Brand hubSunsynk battery error codes
Sunsynk systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →23Brand hubTesla battery error codes
Tesla systems can show faults through the battery, inverter, gateway or app. Start with the exact code or light pattern, then follow the…
Read the answer →24What do AlphaESS SMILE-G3 error codes like 100000 or 100027 mean?
AlphaESS SMILE-G3 inverters show six-digit codes in the AlphaCloud app: 1000xx codes are faults (grid, PV, battery, output) and 1100xx are alarms.…
Read the answer →25Why did my AlphaESS backup stop during a power cut?
If backed-up circuits draw more than the inverter's backup rating (5 kW on SMILE-G3-S5 and B5, 3.68 kW on S3.6) the inverter shows Output_overload…
Read the answer →26My AlphaESS battery has yellow lights flashing - what does it mean?
Yellow LEDs on a SMILE-G3 battery show a protection or error code as a binary pattern. Temperature protections clear by themselves when the…
Read the answer →27Why is my Anker Solarbank not charging from my panels?
First check the Anker app for an alert and whether the power button is flashing red. Then check that the panels are connected, the weather and…
Read the answer →28What do BLUETTI AC180 E codes mean?
BLUETTI AC180 portable power stations show E codes on the screen. E001 is inverter overload and E003 a short circuit from a connected device;…
Read the answer →29What do BLUETTI EP600 error numbers mean?
The BLUETTI EP600 home battery inverter shows numbered errors. Low numbers (1-7) are internal or PV input faults; BLUETTI says turn off, wait 30…
Read the answer →30Why does my Solis inverter show CAN-COM or BAT-COM with Duracell 5+ batteries?
Duracell Energy says a Duracell 5+ battery paired with a Solis RAI inverter needs ferrite loops on the DC power cables and the communication cable…
Read the answer →31Where do I find error codes for my Duracell Energy battery?
Duracell Energy does not publish a public error-code list. Alarms appear in the Duracell Energy app logs and on the Dura-i monitoring platform,…
Read the answer →32How do I reset my Duracell Energy system?
Duracell Energy's homeowner FAQ describes a full reset: switch off any backup consumer unit, then the inverter's AC isolator, each battery…
Read the answer →33What do the lights on an EcoFlow PowerOcean mean?
On the PowerOcean hybrid inverter, a blinking light means it is running grid-tied or on backup, and a steady light covers standby, updates or an…
Read the answer →34What do the lights on my Enphase IQ Battery 5P mean?
On an Enphase IQ Battery 5P, solid or slowly pulsing green or blue means it is working normally. Solid yellow means it has stopped because it is…
Read the answer →35Why won't my GoodWe Lynx battery charge in winter?
A GoodWe Lynx Home F G2 battery raises 'Low Charging Temperature' when it's too cold to charge safely, which is common in unheated garages in…
Read the answer →36What does W000 'Bat Com Fault' mean on a Lux Power inverter?
W000 means the Lux inverter cannot communicate with the battery's management system, so it may stop charging or discharging it. Lux says check the…
Read the answer →37Why does my Lux Power backup (EPS) switch off?
Lux inverters show W028 'UPS Over Load' when backed-up circuits draw more than the inverter can supply, and E012 'UPS short circuit' for a short…
Read the answer →38What does the red ALM light on my Pylontech battery mean?
On Pylontech US-series batteries a flashing red ALM light is an alarm: a value is nearing its limit and the battery keeps working. A solid red ALM…
Read the answer →39What do the orange lights on a Pylontech Force-H3 mean?
On a Force-H3 high-voltage battery, a solid orange status light means lost inverter communication, over-current or a control-module fault. If a…
Read the answer →40My inverter shows a battery communication error with Pylontech batteries - what now?
Pylontech batteries talk to the inverter over CAN or RS485. A comms error on a Solis, Sunsynk, Lux or Victron system usually means a wrong cable,…
Read the answer →41My SMA Sunny Boy Smart Energy battery isn't charging - which events matter?
On SMA Sunny Boy Smart Energy, battery events include 9308 (battery communication error), 9350 (battery status change timeout), 9394…
Read the answer →42Why does my Sofar show ID85 and the battery isn't discharging?
SOFAR ID85 means the battery has reached the minimum charge set by the depth-of-discharge setting, or its voltage is low. With DOD set to 30%,…
Read the answer →43My Victron VRM shows 'Error #48' or '#49' - should I worry?
GX errors come from the Cerbo GX or other GX controller. #48 means DVCC is enabled but a connected device's firmware is too old; #49 means the ESS…
Read the answer →44What do VE.Bus Error 8 or Error 11 mean on a MultiPlus-II?
VE.Bus errors come from Victron inverter/chargers. Error 1 and 3 usually follow another phase shutting down on overload, low battery or…
Read the answer →45Where do I see my AlphaESS fault code?
Open the AlphaCloud app or web portal: the system page shows the current fault code and history. The inverter's SYS LED turns red on a fault and…
Read the answer →46Why isn't my Zendure battery charging?
A solid yellow left light on a Zendure Hyper 2000 means the battery is low and not charging. Zendure suggests checking solar and AC cables,…
Read the answer →47How do I read the yellow fault lights on an AlphaESS SMILE-G3 battery?
The second row of five lights shows the fault number in binary, worth 1, 2, 4, 8 and 16 from right to left. AlphaESS's SMILE-G3 manual (V01, 2023)…
Read the answer →48What do the flashing lights on my Fox ESS EP, EQ or ECS battery mean?
Fox ESS batteries show faults as patterns on a status light plus four charge-level lights. Fox's 2025 manuals list about 30 patterns per range. A…
Read the answer →49Does the Fox ESS EPS Box show fault codes?
No. The EPS BOX-SP manual (V1.0.0) describes a sealed switch box with a built-in meter, breaker and automatic transfer switch, but no lights or…
Read the answer →50My Fox ESS battery shows 'BMS Lost' - is the battery broken?
Not necessarily. 'BMS Lost' means the inverter has stopped hearing from the battery's management system, usually because a communication cable is…
Read the answer →51What do Fox Evo 'BMS State BS1 E01' style codes mean?
They are battery flags shown on the Evo's screen. Fox's Evo manual lists six registers, BS1 to BS6, and each hex value from E01 to E80 is one…
Read the answer →52My Fox ESS Evo shows a fault on its screen - what now?
The Evo shows the fault name on its touchscreen; a red light means fault mode. Fox's Evo manual (V1.0.0) says grid faults such as 'Grid Lost…
Read the answer →53GivEnergy is in administration - who fixes my error code now?
GivEnergy Ltd entered administration on 9 April 2026 and has stopped trading. It no longer honours hardware warranties. GivEnergy Software Ltd,…
Read the answer →54What do the coloured lights on my GivEnergy All in One or Gateway mean?
GivEnergy's UK installation guide says green means normal, flashing green means waiting, yellow means a charging or discharging error (reboot the…
Read the answer →55Why is my GivEnergy battery not charging?
Check that the battery isn't paused in the app, the isolator handle is up, and the lights are green. Check charge slots, reserve and temperature,…
Read the answer →56Why does my GivEnergy portal say 'Battery Count' or 'Battery Capacity' error?
These are checks the portal runs during setup. GivEnergy's knowledge-base article 71 (last updated 14 July 2022) says the battery packs may be…
Read the answer →57What does STORAGE_ERROR_BMS_COM_FAIL mean on my GivEnergy battery?
It means the inverter has lost contact with the battery's management system (BMS), so the battery stops charging and discharging. First check that…
Read the answer →58Why is my GivEnergy showing a 'grid fault' or INV_NO_UTILITY?
INV_NO_UTILITY or STORAGE_ERROR_NO_UTILITY means the GivEnergy inverter cannot detect the grid. Look for a power cut and check that the AC…
Read the answer →59What does a red light on my GivEnergy battery mean?
On a Giv-Bat 9.5 Gen 3, a red light means a fault has been logged. The manual says to call GivEnergy for remote diagnostics. Since GivEnergy Ltd…
Read the answer →60My Growatt APX battery shows a red light - is it safe?
It depends which fault the light means. Growatt's APX manual says a red light on the power module or a battery module means a fault. For…
Read the answer →61What does the ALM light on my Growatt ARK battery mean?
A flickering ALM light on a Growatt ARK XH battery means a protection state: the cell voltage is too low or too high, the temperature is out of…
Read the answer →62What do Growatt SPH battery errors 500, 502 and 506 mean?
On a Growatt SPH hybrid, Error 500 means the inverter has lost communication with the lithium battery's BMS. Error 502 means battery voltage is…
Read the answer →63What do Huawei LUNA2000 battery alarms like 3005 or 3047 mean?
LUNA2000-S0 alarms use IDs 3000-3061. 3005 means the battery DC switch is off or the DC bus cable disconnected; 3047 is battery pack or cell…
Read the answer →64What do Huawei LUNA2000-S1 alarms like 3003 or 3070 mean?
Huawei's LUNA2000-S1 manual (Issue 07, December 2025) lists 24 battery alarms. 3003 means a blown fuse in the power-control module and needs an…
Read the answer →65What do libbi codes like Code 156 / W05 mean?
libbi shows a number and a W (warning) or F (fault) code, for example Code 156 / W05 Bat Loss. Grid-voltage and frequency codes (151-154) usually…
Read the answer →66What do libbi codes like 'Code 101', 'Code 211 / F10' or 'Code 58' mean?
myenergi's Help Centre (updated 19 November 2025) splits libbi codes into three kinds. Status codes 51–56 and 101–102 are information only: limits…
Read the answer →67What does an orange light on a Pylontech Force-L2 mean?
Pylontech's Force-L2 manual (V2.4, September 2024) says a flashing orange status light is a normal protection, for example over-voltage or low…
Read the answer →68How do I read a Sigenergy alarm code in the mySigen app?
Sigenergy's public Alarm List (version 05, October 2025) uses four-digit codes with sub-IDs. 1xxx are inverter or grid alarms, 2xxx are battery,…
Read the answer →69What does a SigenStor alarm starting 1xxx mean?
In Sigenergy's Alarm List (version 05, October 2025), codes 1001–1031 come from the SigenStor inverter or controller. The 2xxx codes are for the…
Read the answer →70What do the lights on my SigenStor mean?
The SigenStor EC has separate DC, AC, battery and communication lights. Sigenergy's manuals from 2024 say a flashing DC or AC light means a fault…
Read the answer →71What happens if my SigenStor stays offline?
Sigenergy's December 2025 user manual says the system sends regular notices while it has no internet connection. After 90 days in a row offline,…
Read the answer →72Why does my SolaX inverter say BMS Lost (IE 19)?
BMS Lost (IE 19 on G4, 'BMS Lost' on G3) means the inverter has lost communication with the battery's management system, so the battery won't…
Read the answer →73What do SolaX Triple Power 'BMS_...' errors mean?
They are battery faults that the SolaX inverter displays. SolaX's T-BAT-SYS-HV-S25/S36 manual (version 16) lists 29 messages, such as BMS_TemHigh…
Read the answer →74What do Solis NO-Battery, CAN Fail and BatName-FAIL mean?
They are Solis hybrid battery alarms. NO-Battery means no battery is detected (switched off, breaker tripped or cable fault); CAN Fail means the…
Read the answer →75Why does my Sunsynk show F56 DC_VoltLow_Fault?
F56 means the DC bus voltage is too low, almost always because the battery is flat or its BMS shut it down. Sunsynk advises charging the battery…
Read the answer →76Sunsynk F58 BMS communication fault - what should I do?
F58 means the inverter lost communication with the battery's BMS while the 'BMS_Err-Stop' option was enabled, so it stopped using the battery.…
Read the answer →77My installer mentioned Tesla One alerts. Can I see Powerwall 3 error codes myself?
Mostly no. Owners get plain-language alerts in the Tesla app and see one status light on the Powerwall. Tesla One is the installer app for…
Read the answer →78What do the lights on my Tesla Powerwall 3 mean?
Powerwall 3 has one light, the Tesla logo. Tesla's 2025 owner manual lists four states: solid white means normal, flashing white means idle and…
Read the answer →79What do Tesla app alerts like 'Waiting for Solar', 'Breaker Open' or 'Side Switch Off' mean?
Tesla Powerwall does not show numeric error codes to owners; the Tesla app shows named alerts. Some are status messages (Grid Outage, Storm Watch,…
Read the answer →80What does the Powerwall 'Grid outage' notification mean?
It means the grid has gone down and your Powerwall is running the backed-up circuits. Tesla's app alert list (stored earlier, not re-read 24…
Read the answer →81Which home batteries show error codes on the unit itself?
Few show actual codes on the unit. The Fox ESS Evo shows fault names and BMS codes on its touchscreen, and Sunsynk and SolaX inverters show…
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