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Dyness · Common problems & faults

Dyness common problems & faults

STS engineers diagnose and repair this fault on Dyness systems. Click any topic below for a full step-by-step guide, or book a free remote diagnostic and we'll tell you what the fix is.
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Solar Tech Support answered my initial enquiry swiftly. They provided remote support to establish what the issue was, and through their experience and network, managed to get my clients system back online. Once the system was online, STS managed to diagnose the main issue to get the ac coupled inverter and battery back online, a battery repair was required. A site visit was organise and within a few days, the system was tested and back up and running. This has saved my client, and probably myself huge costs and inconvenience now the system is back online and working correctly. Would highly recommend.

Dean Wilkinson · Jul 2026 Google

Ron dealt with a battery issue within an hour on a weekend remotely. Very clear instructions to fix the issue worked first time. Excellent service.

Si Whaley · Aug 2026 Google

Unfortunately, only weeks after Givenergy went into receivership, our system failed. Our installers were unhelpful in the extreme but Solar Tech Support were able to diagnose a terminal problem with our Gen 1 AC3 inverter. They advised regarding the available options and (having decided to buy a replacement Givenergy inverter as the simplest solution) they were able to get us up and running. They made themselves readily available to talk through the process and manage any faults. I would have no problem recommending them.

Stephen Paul · Aug 2026 Google

Ronald was able to organise a brilliant electrician with extensive experience of GivEnergy systems local to me in the SW. I have now got a fully functioning system and suspect that my electricity bill will be substantially reduced or in credit over a year. Also when said electrician discovered an overvoltage in the my local grid, Ronald prepared a very lucid and comprehensive report of the situation which I have now supplied to my local grid. Cannot recommend Ron and Dan enough.

Ian Macmillan · Jul 2026 Google

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.

Christopher · Apr 2026 Trustpilot

I contacted Solar Tech Support with an issuewith my solar and Ron went out of his way to help me. Despite the fact that I'm situated hundreds of miles away and he knew there'd be no business opportunity from my inquiry, Ron still chased solutions and helped me get an understanding of what I needed to do. I love working with people like this, people with integrity and service at the heart of what they do. I just wish hew was nearer!

Kevin O'Hara · Aug 2026 Google

Last updated

What goes wrong with Dyness batteries

Almost every Dyness fault we see lands on one product: the Tower-Pro high-voltage battery. It runs at 100 to 400V DC in stacks of 2 to 6 modules, and when something goes wrong the paired inverter flags a BMS alarm, an insulation error or a module communication failure, then the battery stops charging and discharging. Our Tower-Pro HV faults guide walks through the full diagnostic path, from reading the alarm code in the inverter portal to isolating a faulty module from the stack.

The good news is most BMS alarms are configuration problems, not dead hardware. Two modules sharing the same address after an expansion, a loose inter-module link cable, or a battery count on the inverter that doesn't match the stack will all throw communication errors. Insulation faults are different: they mean current is leaking from the HV circuit to earth, so switch the system off and leave it off until an HV-qualified engineer has looked at it. The remote diagnostic is free, and we tell you which kind of fault you've got before any money changes hands.

FAQ

Dyness fault questions answered

It depends on the code in your inverter's event log. Most BMS alarms are configuration or degradation issues: two modules set to the same address, a loose inter-module link cable, an incorrect battery count on the inverter, a firmware mismatch, or cell voltage imbalance in one module. An HV insulation fault is the exception. That one is safety-critical, it means current is leaking to earth, so isolate the system and don't restart it. Send us the alarm code and we'll tell you which path you're on.
Often, yes. Address conflicts, wrong battery count settings, firmware mismatches and transient communication errors are configuration problems we can sort remotely or talk you through. Mild cell imbalance can sometimes be corrected with full charge-discharge cycles so the BMS can rebalance the cells. Insulation faults and failed modules can't be handled remotely. The Tower-Pro runs at up to 400V DC, so any physical work needs an HV-qualified engineer on site.
Nothing. The remote diagnostic is free: we analyse the alarm history, BMS fault codes, cell voltage data and stack configuration, then tell you exactly what's wrong. No fix, no fee. If the fault turns out to need on-site HV work, you get a clear scope and quote before anything is booked.
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Tell us what's happening with your Dyness system. Free remote diagnostic, no-fix-no-fee. Most configuration faults resolved during the 30-minute session.

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