We analyse the inverter event log and BMS data to determine whether the fault is transient, a configuration error, or a hardware issue requiring on-site work.
Book your free remote diagnosticBack to Dyness hubIndependent — not affiliated with Dyness.
When my GivEnergy battery started playing up it became basically useless and several companies I called said they couldn’t help. Solar Tech Support really knew their stuff, communicated very well and resolved the problem quickly. Without them I’d have had to buy a replacement battery.
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.
I wholeheartedly recommend. Many thanks to Ron. Amazing. Everything is fixed. And I feel safer now that I know where to come for support if anything else happens. I contacted STS for help via their extremely useful website which told me exactly what I had done wrong to require support. My GivEnergy battery had been dead for a while and an attempted firmware update had stopped the inverter. The support was prompt and very professional and over and above what I expected. I was helped every step of the way with clear instructions and e-mail support for questions. The issue was resolved within 24 hours and a technical report produces from log data to share with Octopus to try to get to the bottom of how the original issue occurred. Despite Ron saying that mine was a familiar issue with Octopus Intelligent Flux, this to me was service over and above expectations.
Particularly useful in helping to fix my GivEnergy All in One system with a disabling fault.
Had issues with 10yr+ installation. 1 inverter going into alarm mode, unable to access monitoring apps and wanted someone to review and document worthiness of the 2 systems I have. As you will find with older systems, the original installers have moved on, other companies only want to replace and install new, or make up silly prices as they don't want the work, so struggling for 18 month plus trying to source someone to do this. Ronald managed to fit me in the day after contact as he was in the area. Spent a couple of hours on site, found issue with the inverter alarm and he monitoring this to find a total solution, got me back onto the monitoring apps, provided a report on the installations and identified potential areas of concern. These are the people you need for diagnostic reviews of your installations, long term industry professionals, who have a wealth of knowledge gained through working in the industry, know the differing systems and how to contact and approah the companies involved. These are the people you need if you are having issues with installers and / or product and/or supply companies.
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
Safety critical: The Dyness Tower-Pro operates at high voltage (100–400V DC). Do not open the tower enclosure, disconnect modules, or touch HV cables unless you are an HV-qualified engineer. Isolate at the DC switch and AC isolator before any investigation. If you see arcing, smell burning, or notice swelling on any module, evacuate and call 999.
Tower-Pro faults fall into two categories — BMS alarms (internal battery management) and insulation faults (safety/wiring). Start by identifying the alarm type from the inverter event log, then follow the correct diagnostic path.
Dyness Tower-Pro faults are reported through the paired inverter's monitoring platform. Navigate to the event log and look for the alarm:
The alarm code determines which diagnostic path to follow. If you cannot access the event log, we can retrieve it during a remote diagnostic session.
These require completely different responses:
Current leaking between HV DC circuit and earth. Causes: moisture ingress, damaged cable insulation, loose earth connections, condensation from temperature cycling. Isolate immediately. Do not restart. Requires HV-qualified engineer for investigation.
Internal battery management issue — cell imbalance, temperature protection, module address conflict, or communication failure. Usually a configuration error or gradual degradation. Most are resolved remotely or with minor on-site adjustments.
If you're unsure which type you have, treat it as an insulation fault — isolate first, then investigate.
The Tower-Pro uses a modular stacking design — 2 to 6 modules per tower (3.84kWh each). Each module needs a unique address:
DIP switches are accessible on each module. Check the Dyness Tower-Pro installation manual for the correct addressing scheme for your stack size.
Each Tower-Pro module contains LiFePO4 cells in series. Cell imbalance develops over time:
Systems on Octopus or time-of-use tariffs with deep daily cycling tend to show cell imbalance sooner. Modules that have been held at very high SoC for extended periods without regular cycling are also more prone.
Cell-level voltage data may be available through the inverter's battery monitoring screen or via a remote diagnostic.
If the fault persists after addressing and rebalancing checks, a single module in the stack is likely the source. To identify it:
Do not attempt this yourself. Tower-Pro modules operate at high voltage. Module removal and reconnection must be carried out by an HV-qualified engineer. We can identify the suspect module remotely from BMS data and provide a clear brief for the on-site engineer.
Safety: HV battery work requires appropriate PPE and lockout/tagout procedures. Never assume a module is de-energised — always verify with a multimeter.
The Dyness Tower-Pro is a high-voltage modular battery system designed for residential and small commercial solar installations. Each module provides 3.84kWh of usable capacity with a 1C charge and discharge rate, meaning the full module capacity can be charged or discharged in approximately one hour. Towers support 2 to 6 modules (7.68–23.04kWh total), carry IP55 protection for outdoor installation, and include a 15-year warranty. Some configurations include an integrated fire suppression module.
Tower-Pro systems pair with hybrid inverters via CAN bus communication. Because the Tower-Pro is inverter-agnostic, the correct protocol and battery type must be selected on the inverter side — just as with other third-party batteries. We see Tower-Pro faults most commonly in three situations: initial commissioning where the inverter battery type or protocol is wrong, stack expansions where a new module was added without updating the address and battery count, and aging systems where cell imbalance has developed over years of cycling. The Tower-Pro B4850 (the low-voltage variant) uses a different protocol and voltage range — they cannot be mixed.
Return to the Dyness brand hub to explore other common faults and services.
Dyness support hubTell us the alarm code from your inverter portal, how many modules are in the stack, and what happened before the fault appeared. We'll analyse the BMS data and provide a clear diagnosis.
Due to unprecedented demand we’re currently only carrying out on-site work in Yorkshire, and replies are taking up to 7 days. Remote diagnostics continue for the whole UK as normal.
Every message is read and answered, so please don’t send it twice; that only slows the queue.
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