Sofar Solar Fault Code Index
Every Sofar Solar inverter error code from ID01 to ID107 — grid protection trips, PV input faults, battery BMS alarms, internal hardware errors, and communication failures. Covers the HYD-ES, HYD-EP, and ME3000SP ranges commonly installed across the UK.
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Sofar Solar Fault Code Index
- Codes shown on LCD and in SolarMAN app
- ID01–ID107 complete fault reference
- HYD-ES · HYD-EP · ME3000SP
I have a GivEnergy system consisting of two batteries, two inverters and a controlling EMS (Energy Management System) which has not worked since Nov 2025. After six months I discovered Solar Tech Support, reached out to them and Ron phoned me back – how often do you get that service? Could not be more helpful – worked directly with me over the phone, outside what I would call normal working hours. Lucid explanations and we were able to discuss the issues and history using camera and email history. As this was a very rare setup, Ron was able to access an EMS expert in the field to confirm the solution. One sunny day in, I am now only paying for standing charge and a few pence for spikes in grid consumption while battery catches up with house demand.
When my GivEnergy system had an issue, I was completely left without support and had honestly lost all hope. Thankfully, I searched online and found Ron, which completely turned things around. After sending him a message, he responded incredibly fast and called me to assure me that he would get the problem fixed. I really admire his dedicated, supportive nature and his determination to find a solution. With this kind of outstanding attitude and customer service, he has absolutely secured a future customer in me.
Ron want out of is way to help, nothing was to much. He was very thorough in what he did Very knowledgeable I would highly recommend Ron and his company He did a fantastic job for me. if you have any problems, he'll do his best to help you out and resolve your problem. I wouldn't hesitate to recommend them
Ron took me through a diagnostic to confirm my GivEnergy Inverter had a fault. A common one as it turns out with the AC Inverter. As GivEnergy is defunct there is no immediate fix, aside from sourcing 2nd hand replacement. It may be that a fix becomes available over the summer which would make a lot of GivEnergy customers happy (Again)
Contacted Ron with a problem and he sorted it out quickly with no problems at all. Very knowledgeable on anything solar/ batteries. I would recommend him to anyone
I've spoken to Ron a couple of times with issues with my Givenergy installation. Such a friendly knowledge guy very highly recommended. Thank you very much for resolving my issues
Contacted Solar Tech Support in desperation. After explaining the issues I had with my system a diagnosis was made and a solution proposed. Fantastic service, even contacted a manufacturer to arrange replacement parts for me. Great communications, explained all they were doing and what I had to do, clearly and precisly. Followed up to confirm all was ok. Excellent service.
After GivEnergy went into liquidation, just my luck, my battery started playing up (internal board crashed). Contacted my installer - not interested! Found Solar tech support on a Google search. Sooo glad I found this company! Ron is extremely helpful and has plenty of experience. He soon confirmed what the fault was, and helped me to get my system up and running again. Now moved my GivEnergy account to Solar tech support, and will definitely use again if I have more issues. Unusual to find such a helpful company in these times, no morons reading scripts, just direct contact with the engineer.
Contacted Solar Tech Support when trying to understand what my Givenergy inverter problem might be and what might be my options. Received good/honest advise which backed up my thoughts.
Ron is a super star. Two months ago my GivEnergy battery failed a firmware upgrade leaving it a brick. My installer couldn't/wouldn't fix it. GivEnergy couldn't/wouldn't fix it. Then they went into administration and all hope was lost. A flurry of emails later and Ron had diagnosed the fault (failed USB flash drive, something I'd suspected) and talked me through resolving it. Two months of nothing resolved in about 3 hours. It's great to work with someone who pays attention to the details, knows that they're doing (not just following a script) and gets stuff sorted without a fuss or up-charging.
I can add to the list of customers who had already 'given up' on GivEnergy due to their appalling customer service, and that was before they went into administration (their Trustpilot reviews don't lie!). So you can imagine my desperation when, having changed my ISP and my Inverter, predictably, proving to be the only device that didn't connect automatically to my new network, I found zero prospect of any customer support with GivEnergy having called in the administrators just five days earlier! The salvation came from Solar Tech Support. My IT advisor stumbled across their web site and some very helpful tips for beleaguered GivEnergy customers, as well as an offer to provide direct assistance. Nothing ventured, I decided to drop them an E-Mail, with very low expectations based on my experience of GivEnergy customer support. Within an hour Ron had responded with some pin point advice, and after a few exchanges of E-Mails he had nailed the problem, enabling the combined efforts of my IT advisor and solar installer to resolve it and reconnect my Inverter. Thank you Solar Tech Support, and Ron in particular, for coming to the aid of a deserted and despondent GivEnergy customer. Expert, razor sharp advice and first class customer service, even though I wasn't officially a customer.
This company are a rare gem, I had a very unusual problem following a failed firmware upgrade on my GivEnergy kit. I then found out GivEnergy were in administration and had dismissed all their support staff! None of the usual fixes to try and restore my inverter comms would work, and I looked everywhere, forums, GivEnergy youtube support videos - even AI couldn't figure it out. My installer was talking about huge sums for system replacements, and being vague / evasive about if they'd even install replacement GivEnergy inverter. Enter Solar Tech Support, reassuring and knowledgeable from the very start, I've learnt loads about my solar system though the friendly chat while my engineer worked as he diagnosed the problem and figured out a fix procedure that I've not found anywhere else - amazing . If you need solar system repairs - especially if you like me have been left high and dry by GivEnergy, I cannot recommend this company enough. Give them a call.
I sent a message on their website regarding a problem I have on my Givenergy system. Although not supplied by Ronald, I thought it was worth an email. Within the hour on a Saturday, he phoned and we discussed the problem. He logged in remotely and gave excellent advice. I'm too far away for his on-site help but he did diagnose the problem and was happy also to chat through my thoughts about an upcoming solar/battery install I'm planning. Great bloke.... if only he was nearer!
I have a GivEnergy system consisting of two batteries, two inverters and a controlling EMS (Energy Management System) which has not worked since Nov 2025. After six months I discovered Solar Tech Support, reached out to them and Ron phoned me back – how often do you get that service? Could not be more helpful – worked directly with me over the phone, outside what I would call normal working hours. Lucid explanations and we were able to discuss the issues and history using camera and email history. As this was a very rare setup, Ron was able to access an EMS expert in the field to confirm the solution. One sunny day in, I am now only paying for standing charge and a few pence for spikes in grid consumption while battery catches up with house demand.
When my GivEnergy system had an issue, I was completely left without support and had honestly lost all hope. Thankfully, I searched online and found Ron, which completely turned things around. After sending him a message, he responded incredibly fast and called me to assure me that he would get the problem fixed. I really admire his dedicated, supportive nature and his determination to find a solution. With this kind of outstanding attitude and customer service, he has absolutely secured a future customer in me.
Ron want out of is way to help, nothing was to much. He was very thorough in what he did Very knowledgeable I would highly recommend Ron and his company He did a fantastic job for me. if you have any problems, he'll do his best to help you out and resolve your problem. I wouldn't hesitate to recommend them
Ron took me through a diagnostic to confirm my GivEnergy Inverter had a fault. A common one as it turns out with the AC Inverter. As GivEnergy is defunct there is no immediate fix, aside from sourcing 2nd hand replacement. It may be that a fix becomes available over the summer which would make a lot of GivEnergy customers happy (Again)
Contacted Ron with a problem and he sorted it out quickly with no problems at all. Very knowledgeable on anything solar/ batteries. I would recommend him to anyone
I've spoken to Ron a couple of times with issues with my Givenergy installation. Such a friendly knowledge guy very highly recommended. Thank you very much for resolving my issues
Contacted Solar Tech Support in desperation. After explaining the issues I had with my system a diagnosis was made and a solution proposed. Fantastic service, even contacted a manufacturer to arrange replacement parts for me. Great communications, explained all they were doing and what I had to do, clearly and precisly. Followed up to confirm all was ok. Excellent service.
After GivEnergy went into liquidation, just my luck, my battery started playing up (internal board crashed). Contacted my installer - not interested! Found Solar tech support on a Google search. Sooo glad I found this company! Ron is extremely helpful and has plenty of experience. He soon confirmed what the fault was, and helped me to get my system up and running again. Now moved my GivEnergy account to Solar tech support, and will definitely use again if I have more issues. Unusual to find such a helpful company in these times, no morons reading scripts, just direct contact with the engineer.
Contacted Solar Tech Support when trying to understand what my Givenergy inverter problem might be and what might be my options. Received good/honest advise which backed up my thoughts.
Ron is a super star. Two months ago my GivEnergy battery failed a firmware upgrade leaving it a brick. My installer couldn't/wouldn't fix it. GivEnergy couldn't/wouldn't fix it. Then they went into administration and all hope was lost. A flurry of emails later and Ron had diagnosed the fault (failed USB flash drive, something I'd suspected) and talked me through resolving it. Two months of nothing resolved in about 3 hours. It's great to work with someone who pays attention to the details, knows that they're doing (not just following a script) and gets stuff sorted without a fuss or up-charging.
I can add to the list of customers who had already 'given up' on GivEnergy due to their appalling customer service, and that was before they went into administration (their Trustpilot reviews don't lie!). So you can imagine my desperation when, having changed my ISP and my Inverter, predictably, proving to be the only device that didn't connect automatically to my new network, I found zero prospect of any customer support with GivEnergy having called in the administrators just five days earlier! The salvation came from Solar Tech Support. My IT advisor stumbled across their web site and some very helpful tips for beleaguered GivEnergy customers, as well as an offer to provide direct assistance. Nothing ventured, I decided to drop them an E-Mail, with very low expectations based on my experience of GivEnergy customer support. Within an hour Ron had responded with some pin point advice, and after a few exchanges of E-Mails he had nailed the problem, enabling the combined efforts of my IT advisor and solar installer to resolve it and reconnect my Inverter. Thank you Solar Tech Support, and Ron in particular, for coming to the aid of a deserted and despondent GivEnergy customer. Expert, razor sharp advice and first class customer service, even though I wasn't officially a customer.
This company are a rare gem, I had a very unusual problem following a failed firmware upgrade on my GivEnergy kit. I then found out GivEnergy were in administration and had dismissed all their support staff! None of the usual fixes to try and restore my inverter comms would work, and I looked everywhere, forums, GivEnergy youtube support videos - even AI couldn't figure it out. My installer was talking about huge sums for system replacements, and being vague / evasive about if they'd even install replacement GivEnergy inverter. Enter Solar Tech Support, reassuring and knowledgeable from the very start, I've learnt loads about my solar system though the friendly chat while my engineer worked as he diagnosed the problem and figured out a fix procedure that I've not found anywhere else - amazing . If you need solar system repairs - especially if you like me have been left high and dry by GivEnergy, I cannot recommend this company enough. Give them a call.
I sent a message on their website regarding a problem I have on my Givenergy system. Although not supplied by Ronald, I thought it was worth an email. Within the hour on a Saturday, he phoned and we discussed the problem. He logged in remotely and gave excellent advice. I'm too far away for his on-site help but he did diagnose the problem and was happy also to chat through my thoughts about an upcoming solar/battery install I'm planning. Great bloke.... if only he was nearer!
Grid protection codes trigger when the mains supply voltage or frequency drifts outside the inverter's programmed safety window. In the UK, these limits are set by G98/G99 regulations. The inverter disconnects from the grid and waits for conditions to return to normal before reconnecting automatically.
ID01 — GridOVP (grid overvoltage)
Grid · voltage high
ID02 — GridUVP (grid undervoltage)
Grid · voltage low
ID03 — GridOFP (grid over-frequency)
Grid · frequency high
ID04 — GridUFP (grid under-frequency)
Grid · frequency low
ID06 / ID07 — OVRT / LVRT fault
Grid · ride-through
PV input faults relate to the DC side — the solar panels and their connections to the inverter's MPPT inputs. The HYD-ES and HYD-EP support dual MPPT with either independent or parallel input modes, and an incorrect mode setting is a common trigger for several of these codes.
ID08 — PVOVP (PV overvoltage)
⚠ DC string voltage exceeded max input
ID13 — GFCI OCP (ground fault)
PV · earth leakage
ID14 — HwPVOC (PV overcurrent)
PV · hardware protection
ID16 — IpvUnbalance (input current imbalance)
PV · string mismatch
ID33 — PvConfigSetWrong (input mode error)
PV · configuration
ID56 — PvIsoFault (insulation resistance low)
PV · insulation
Battery faults (ID05, ID27, ID100–ID107) are reported by the battery's own BMS through the communication link to the inverter. These codes appear on both the HYD hybrid inverters and the ME3000SP AC-coupled battery inverter. The inverter stops charging or discharging to protect the cells.
ID05 — BatOVP (battery overvoltage)
Battery · voltage high
ID27 — BatOCP (battery overcurrent)
Battery · current limit
ID100 — BatOCD (discharge overcurrent)
⚠ Battery BMS protection — discharge stopped
ID101 — BatSCD (charge short circuit)
⚠ Battery BMS protection — charge stopped
ID102 — BatOV (cell overvoltage)
Battery · BMS overvoltage
ID103 — BatUV (cell undervoltage)
Battery · deep discharge
ID85 — SOC ≤ DOD / battery voltage low
Battery · discharge limit
ID86 — Force charge failure
Battery · charge failed
Internal hardware faults (ID09–ID31, ID65–ID77) indicate problems with the inverter's internal circuits — power stages, control boards, bus voltages, and protection relays. The first step for all of these is a full power cycle: turn off both AC and DC isolators, wait at least five minutes, then restart. If the fault returns, it usually requires professional repair or warranty replacement.
ID09 — HW_LLCBus_OVP
Internal · bus overvoltage
ID10 — HW_Boost_OVP
Internal · boost overvoltage
ID11 / ID12 / ID15 — Hardware overcurrent
Internal · overcurrent protection
ID17 / ID18 / ID19 — AD sampling faults
Internal · sensor error
ID20 / ID21 / ID22 — Control board faults
Internal · controller
ID25 / ID26 — Bus overvoltage (software)
Internal · bus protection
ID29 / ID30 / ID31 — Software overcurrent
Internal · current limit
ID65–ID70 — Unrecoverable hardware faults
⚠ Persistent fault — requires engineer
ID55 — RelayFail (relay fault)
Internal · relay
ID75 / ID76 — EEPROM read/write fault
Internal · memory
Communication faults affect the link between the inverter and the battery BMS, the internal DSP boards, the SolarMAN monitoring dongle, and the CT meter. ID52 (battery communication) is the single most common Sofar fault in UK residential installations.
ID52 — BatCommunicationFlag
Battery · BMS communication
ID53 — SpiCommLose (SPI fault)
Internal · board communication
ID54 — SciCommLose (SCI fault)
Internal · serial communication
ID48–ID51 — Consistency faults
Internal · DSP mismatch
ID35 — CT Fault
Metering · CT clamp
ID94 — Software version mismatch
System · firmware
ID95 / ID96 — Comm board EEPROM / RTC
System · communication board
ID97 — InValidCountry (country code)
System · configuration
ID98 — SDfault (SD card error)
System · data logging
Thermal faults trigger when the inverter or battery exceeds its operating temperature range. EPS (emergency power supply) faults relate to the backup output that powers essential circuits during a grid outage. The HYD-ES and HYD-EP both support EPS functionality.
ID57 — Battery over-temperature
Battery · thermal
ID58 — Heat sink over-temperature
Inverter · thermal
ID59 — Environmental over-temperature
Inverter · ambient
ID81 — Temperature derating
Inverter · power reduction
ID104 / ID105 — Battery temp high (discharge / charge)
Battery · over-temperature
ID106 / ID107 — Battery temp low (discharge / charge)
Battery · cold weather
ID34 — Overload (EPS output)
EPS · backup overload
ID60 — PE connect fault (earthing)
Safety · grounding
ID83 / ID84 — Remote derating / shutdown
System · remote command
The Sofar ID code system spans over 100 fault types. If you see a code on your LCD or in SolarMAN that is not listed above, share the exact ID number and we will identify it. Some codes only appear on specific firmware versions or newer HYD-EP hardware.
Why the inverter keeps tripping on grid voltage — DNO reporting, protection settings, and AC wiring checks.
ME3000SP not switching to backup mode, EPS relay issues, and load management during outages.
Official HYD-ES, HYD-EP, and ME3000SP user manuals, datasheets, and installation guides.
Sofar Solar inverter fault questions
Sofar fault code you can't clear?
Tell us the ID code on your LCD or SolarMAN alarm, the inverter model, and when the fault first appeared. We'll pull your monitoring data remotely and identify the root cause — whether it needs a settings change, firmware update, or site visit.
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Got a solar fault or need a quick answer? Drop us a message — we usually reply within a few minutes. Mon–Fri, 9am–7pm.