A remote diagnostic session interprets the fault code in context — event log history, grid voltage data, system configuration — and gives you a clear cause and fix route.
Book your free remote diagnosticGivEnergy fault codesSafety: if you smell burning, see arcing or physical damage, isolate at the consumer unit immediately and do not restart.
Brilliant support to get my solar battery working again. I didn’t expect help on a Saturday but Ron answered the phone, listened and sent me the information I needed to get it going, answered questions etc. A brilliant service I’d happily recommend.
Ron was brilliant. He really tried to help. He spent hours trying to fix our GivEnergy AIO and ultimately it became apparent that it needed parts to fix the BMS management system. As there appears to be no replacement parts available on the market, he gave excellent advice on what options are now available to move forward. He is incredibly helpful and knowledgeable.
Called back within a day and gave good advice.
Ron was extremely helpful and tried his best to repair/reset our GivEnergy inverter remotely. In the event he was unsuccessful but he couldn’t have been more helpful. If you have problems with a GivEnergy system please contact him. Highly recommended
Big thanks to Ron. He was incredibly patient and helpful over the phone, taking the time to walk myself and the installer through every troubleshooting step. Through lots of testing he figured out the issue was definitely a hardware issue, which allows us to consider our next steps. Support fees are clear and they operate a “no fix no fee” policy. It is rare to find that kind of honesty combined with dedicated phone support nowadays. I highly recommend Ron, if you need help with your solar system don’t hesitate to give him a call.
A superb service from Ron who went beyond the normal service received from other Tech support companies. I live abroad and was badly let down when my givenergy system failed (and the company went bankrupt) and the local supplier ran away from the problem. Ron sorted the problem and even accessed specialist coding for the inverter that would not be available for suppliers. Ron also ran a full diagnostic to insure that all was in good working order afterwards. Without Rons support and patient assistance I doubt I would ever have got the system back up and running. Well done and thankyou and you have a customer for the future.
Brilliant support to get my solar battery working again. I didn’t expect help on a Saturday but Ron answered the phone, listened and sent me the information I needed to get it going, answered questions etc. A brilliant service I’d happily recommend.
Ron was brilliant. He really tried to help. He spent hours trying to fix our GivEnergy AIO and ultimately it became apparent that it needed parts to fix the BMS management system. As there appears to be no replacement parts available on the market, he gave excellent advice on what options are now available to move forward. He is incredibly helpful and knowledgeable.
Called back within a day and gave good advice.
Ron was extremely helpful and tried his best to repair/reset our GivEnergy inverter remotely. In the event he was unsuccessful but he couldn’t have been more helpful. If you have problems with a GivEnergy system please contact him. Highly recommended
Big thanks to Ron. He was incredibly patient and helpful over the phone, taking the time to walk myself and the installer through every troubleshooting step. Through lots of testing he figured out the issue was definitely a hardware issue, which allows us to consider our next steps. Support fees are clear and they operate a “no fix no fee” policy. It is rare to find that kind of honesty combined with dedicated phone support nowadays. I highly recommend Ron, if you need help with your solar system don’t hesitate to give him a call.
A superb service from Ron who went beyond the normal service received from other Tech support companies. I live abroad and was badly let down when my givenergy system failed (and the company went bankrupt) and the local supplier ran away from the problem. Ron sorted the problem and even accessed specialist coding for the inverter that would not be available for suppliers. Ron also ran a full diagnostic to insure that all was in good working order afterwards. Without Rons support and patient assistance I doubt I would ever have got the system back up and running. Well done and thankyou and you have a customer for the future.
Red fault lights cover a wide range of causes — from self-clearing grid events to faults needing hardware repair.
The grid voltage at your connection point has risen above the inverter's G98/G99 limits (typically around 253V in the UK). Common in areas with high solar density. The inverter disconnects to protect the grid. Often self-clears when grid voltage drops.
A leakage current detected between the DC solar circuit and earth — often caused by water ingress into a junction box, MC4 connector, or cable conduit. Common after heavy rain. Self-clears when dry but the ingress point must be sealed.
The inverter's AFCI system has detected an arc in the DC wiring. Common on SolarEdge and Enphase systems. Do not reset without investigating — a confirmed arc fault represents a fire risk and requires a qualified engineer to inspect the DC cabling.
The inverter cannot communicate with the battery BMS. The inverter shows a red light while the battery side is also faulted. See battery communication fault for the full diagnostic process.
One or more solar strings is producing a current outside the inverter's expected range — from a short circuit, damaged panel, or failed optimiser. The inverter trips the affected string or all strings.
The inverter has overheated — typically from poor ventilation, a blocked heat sink, or high ambient temperature combined with high output. The thermal protection trips the inverter. Usually self-clears once cooled. Check that airflow around the inverter is not blocked.
Arc fault codes require engineer attendance before reset. If your fault code indicates an arc fault (AFCI trip), do not attempt to reset the inverter. An arc in DC solar wiring is a fire hazard. The wiring must be inspected and the fault location identified by a qualified engineer before the system is restarted.
Start here — these steps apply to all inverter brands.
Note whether the red light is solid or flashing and at what rate. Check the inverter's own display for a fault code number. On most brands the display alternates between the fault code and other information — watch it for 30 seconds. Even "E01" or "F23" gives you something to work with.
Open your monitoring portal and look at the event log or fault history. The same fault code will be logged here, along with the exact time it triggered. Look at what happened immediately before — was there a grid event, a firmware update, heavy rain, high temperatures? Context helps identify the cause.
Use the fault code guide for your inverter brand to understand what the code means. GivEnergy, Growatt, Sunsynk, SolarEdge, and Solis all have different code numbering systems. See the brand pages and fault code guides linked below.
For grid faults, isolation faults, and temperature trips: turn off the inverter via its AC and DC isolation switches, wait 5 minutes, turn back on (AC first, then DC). See the safe shutdown guide for the correct sequence. If the fault clears and generation resumes, monitor the portal over the next 24 hours to confirm it doesn't recur.
Do not reset if the fault code indicates: arc fault, string short circuit, hardware failure, or battery BMS fault. Do not perform more than one reset without professional input.
A fault that returns immediately or within a few hours of resetting indicates an ongoing problem that won't resolve itself. Continuing to reset masks the underlying cause. Book a diagnostic to get a proper assessment before the fault worsens or causes secondary damage.
A remote diagnostic reviews your full event log, grid voltage history, and system configuration to give you a definitive cause and a clear repair plan.
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