Optimiser offline, arc fault light, no production — we diagnose SolarEdge systems remotely in a single session.
Book your free remote diagnosticLearn about our Solar Health PlanSafety: If the arc fault light is active, do not reset more than once — isolate at the AC and DC switches and call us first.
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.
Every fault below has a proven diagnostic path. Click through for the specific page or book a diagnostic if you're unsure.
Inverter powered on but generating nothing. Usually DC string fault, optimiser failure, grid disconnection, or AFCI trip. Each optimiser works independently — one failed unit reduces output but rarely stops everything.
See diagnostic guide →SolarEdge HD-Wave inverters display error codes on the LED panel and in the SetApp. Codes beginning with 'G' indicate grid faults. 'OP' codes indicate optimiser communication failures.
See diagnostic guide →The arc fault protection circuit has interrupted DC power. This is a safety event — not an arbitrary trip. Common causes: damaged DC cable insulation, corroded MC4 connector, or failed optimiser. Requires investigation before reset.
See diagnostic guide →HD-Wave models (SE3000H–SE6000H) from 2017–2020 batches have higher failure rates. All LEDs off, thermal shutdown, or zero AC output. Covered by 12-year warranty — we handle the claim and coordinate the replacement.
See diagnostic guide →An N/A in the SolarEdge portal means the optimiser isn't communicating. Could be a failed unit, loose DC connector, or shading causing low Vmp. We identify which optimiser is affected and whether it needs replacement.
See diagnostic guide →Optimisers communicate over the DC power line (PLC). A wiring error, damaged pair, or incompatible optimiser firmware version can break the communication chain for part or all of a string.
See diagnostic guide →SolarEdge allows panel-level output comparison in the monitoring portal. Underperformance is usually caused by one or more optimisers degraded, soiled panels, or partial shading configuration error.
See diagnostic guide →The SetApp dashboard or SolarEdge monitoring portal shows no data. Causes: inverter comms module offline, ethernet/WiFi drop, or portal outage. The inverter may still be generating even when monitoring is dark.
See diagnostic guide →SolarEdge monitoring devices require 2.4GHz WiFi. After a router change or WiFi password update, the communication module needs reconfiguring. We walk through the SetApp reconnection process.
See diagnostic guide →SolarEdge displays fault codes in the monitoring portal and on the SetApp. Common error prefixes: 'G' (grid faults), 'OP' (optimiser communication), 'AFCI' (arc fault detection), 'AC' (AC side faults). Share your exact code when you book — we identify the root cause using monitoring portal data and SetApp logs.
We review SetApp data, monitoring portal history, and error codes to identify the exact fault remotely.
Installer gone bust or locked out of the SolarEdge portal? We recover access and transfer monitoring account ownership.
SolarEdge inverter lost WiFi after a router change or password update? Reconnect via SetApp or SolarEdge Go and restore monitoring.
G99 export limit curtailing too much? Dynamic vs fixed limiting, CT clamp orientation, meter communication faults.
Optimiser replacement, DC cable fault location, arc fault investigation, CT clamp correction.
Download datasheets, installation manuals, warranty documents and monitoring guides for SolarEdge HD-Wave inverters, optimisers and StorEdge batteries. Self-hosted and always current.
SolarEdge is the UK's largest solar inverter brand by installed capacity. Unlike conventional string inverters, SolarEdge pairs each panel with a power optimiser — a DC-DC converter that maximises output from each module independently. The inverter then operates at a fixed input voltage (the SolarEdge 'HD-Wave' principle), which improves efficiency and makes the system safer to work on (DC strings run at a fixed 1V when the inverter is off). The monitoring portal provides panel-level output data — a significant advantage for fault diagnosis.
The most searched SolarEdge issues we see are: SolarEdge not producing, SolarEdge arc fault, SolarEdge optimiser not communicating, SolarEdge monitoring offline, and SolarEdge installer gone bust. SolarEdge systems are commissioned using SetApp — a mobile tool that replaces the traditional display. If your installer didn't complete commissioning or you've lost access, we recover and verify the configuration. STS provides independent SolarEdge support across the UK — not affiliated with SolarEdge Technologies Inc.
STS supports all major inverter and battery brands — not just SolarEdge. If you have a mixed-brand system or are comparing options, visit the brand hub.
Browse all 19 brandsTell us the fault code or describe what you're seeing — monitoring portal dark, arc fault light, optimiser N/A. We'll identify the cause and give you a clear path.
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