Thank you for your diligence. On this occasion the battery was able to be saved but they have given a route to hopefully arrange a repair from the manufacturer.
David Bateman · Jun 2026 Google
Brand support · Sofar Solar
Sofar Solar Support — HYD Hybrid, ME3000SP Battery Faults & Tariff Configuration
Sofar battery not charging, ME3000SP not working, SolarMan offline, grid disconnection faults — we diagnose Sofar Solar hybrid and AC-coupled systems at the engineering level. Remote-first. Independent from Sofar Solar and your installer.
Free remote diagnostic pay only if we fix it — from £95 if remediable remotely
- Not affiliated with Sofar Solar
- HYD hybrid, ME3000SP & G3 series supported
- SolarMan & tariff configuration specialists
Sofar battery not charging overnight?
Most Sofar configuration issues are resolved remotely in a single session. Tell us your inverter model and what you're seeing.
Book your free remote diagnosticSafety: If your Sofar inverter or battery shows error lights, isolate at the DC switch before investigating.
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.
Alison F. Cockerill · Jun 2026 Google
Great service. Got our Givenergy battery back online remotely when others said it needed an onsite visit. Ron resolved the issue within about an hour of my email. Brilliant service.
adam mitchinson · Jul 2026 Google
Solar Tech Support is an absolute lifesaver. My solar and battery system stopped working completely, but after one quick phone call, they fixed the problem straight away. The original provider, GivEnergy, has gone into administration, leaving me entirely without support from the original installers. It was a terrible situation on GivEnergy’s part, but thankfully, Solar Tech Support came to the rescue!
sohaib maroof · Jul 2026 Google
I reached on behalf of a friend, who had lost control of their battery following a storm. A couple giv energy “dealers” had attempted and said different fixes. None worked. Solar tech support solved it remotely on the first attempt almost instantly. Genuinely a 10/10 service.
Will Jay · Jun 2026 Google
Prompt and useful support regarding my Sunsynk system lack of performance. Ronald simplified the technical issues to make them understandable. Many thanks, looking forward to follow up.
Patrick Keenan · May 2026
Sofar Faults
Common Sofar Solar problems we diagnose
Sofar Solar has a large UK install base across two distinct product generations — HYD hybrid inverters and the older ME3000SP AC-coupled units. We support both.
Battery & Charging
Most common
Battery not charging overnight
Sofar HYD hybrid inverters use SolarMan for schedule configuration. If the battery isn't charging on cheap rate, the TOU schedule likely has the charge window disabled, grid charge toggled off, or the SoC minimum already met. For ME3000SP units, the schedule is set locally on the device — a common source of confusion after router changes.
See diagnostic guide →ME3000SP
ME3000SP not working / EPS mode fault
The Sofar ME3000SP is an AC-coupled BESS managing battery charge/discharge alongside an existing solar system. Common issues: schedule set incorrectly after a power cycle, EPS mode not triggering during a grid outage, battery not communicating correctly over RS485, or the unit being stuck in a fault state requiring a configuration reset.
See diagnostic guide →BMS
Battery BMS communication fault
Sofar HYD hybrids communicate with their paired battery via CAN bus or RS485. A BMS comm fault stops the inverter from reading battery state, preventing charging and discharging. Common causes: wrong battery type selected on the inverter, loose CAN cable, or Pylontech/Dyness protocol mismatch if a third-party battery is paired.
See diagnostic guide →Common
Battery not discharging as expected
Battery fully charged but the Sofar inverter isn't drawing from it. Check the discharge schedule and minimum SoC threshold in SolarMan. A BMS protection trip will also prevent discharge — check the inverter event log for battery protection errors.
See diagnostic guide →Grid & Production
Common
No solar production
Sofar inverter powered but not generating. Check SolarMan for DC input voltage — if zero or very low, inspect DC isolators and PV string connections. DC isolation faults (G-ISO) and MPPT errors can suppress production while battery functions continue normally.
See diagnostic guide →Grid
Grid disconnection fault
Sofar inverters comply with G98/G99 and disconnect if grid voltage or frequency exceeds limits. The inverter reconnects automatically. In high-solar-density areas, repeated trips may require export limit configuration. The ME3000SP can also issue grid fault codes related to its AC coupling point.
See diagnostic guide →EPS
No backup during power cut
Sofar HYD hybrids support EPS mode, but it requires dedicated EPS wiring and must be enabled in settings. The ME3000SP also supports an EPS/off-grid mode but is frequently not commissioned for it. If backup power failed during an outage, EPS was likely never set up — or the load exceeded the EPS output rating.
See diagnostic guide →
Services
All services →
What we do for Sofar Solar owners
Remote Sofar Diagnostic
We review SolarMan data, TOU schedules, BMS logs, and error history for HYD hybrid inverters. We also review ME3000SP configuration logs and event history.
✓ SolarMan data review (HYD series)
✓ ME3000SP configuration audit
✓ Battery BMS fault isolation
Sofar Tariff Configuration
We configure TOU charge/discharge schedules for HYD hybrid inverters, or set the direct schedule on ME3000SP units, to correctly use Octopus Agile, Go, Intelligent, Flux, or any other tariff.
✓ TOU schedule build (SolarMan / direct)
✓ ME3000SP charge window setup
✓ Grid charge & SoC targets verified
On-Site Sofar Repair
EPS circuit verification, CAN bus checks, battery BMS pairing, DC fault location, and component replacement for Sofar HYD inverters and ME3000SP units.
✓ Evidence-led targeted checks
✓ Safety-focused report
✓ Repair or replacement path
Documents
Sofar datasheets, manuals & warranty PDFs
Download datasheets, installation manuals and warranty documents for Sofar hybrid inverters and battery systems. Self-hosted and always current.
Product datasheets & specifications
Installation & commissioning manuals
Warranty terms & coverage documents
App & software setup guides
Wiring diagrams
Fault Codes
Sofar fault code index
Seeing an error code on your Sofar inverter? Our fault code index explains what each code means, common causes, and safe next steps.
·Battery communication & BMS faults
·Grid connection & frequency faults
·Over-temperature & protection events
·SolarMan monitoring & connectivity errors
About Sofar Solar systems — what you need to know
Sofar Solar is a Chinese manufacturer with a large UK installed base across two distinct product generations. The ME3000SP was one of the most widely installed AC-coupled battery energy storage systems in the UK between 2016 and 2021 — it retro-fits to existing solar systems to add battery storage and operates independently of the solar inverter. The newer HYD series (HYD 3600–6000 EP) are all-in-one hybrid inverters combining solar MPPT, battery management, and grid connection. Both use SolarMan for monitoring — the same platform used by Sunsynk and Hanchu systems.
The ME3000SP has a large installed base of older units now approaching the 7–10 year mark, and configuration faults or component wear are increasingly common on these systems. For newer HYD hybrid systems, the configuration issues are similar to other SolarMan-based hybrids. Common queries: Sofar ME3000SP not charging, Sofar HYD battery not charging overnight, Sofar SolarMan offline, ME3000SP EPS mode fault, and Sofar battery BMS comm fault. STS provides independent support — not affiliated with Sofar Solar.
HYD Hybrid Inverters
HYD 3600-EP — 3.6kW single-phase
HYD 4600-EP — 4.6kW single-phase
HYD 5000-EP — 5.0kW single-phase
HYD 6000-EP — 6.0kW single-phase
Monitoring: SolarMan / SolarmanPro
ME3000SP (AC-Coupled)
3kW AC-coupled BESS
Retro-fits to any solar system
RS485 battery communication
Widely installed 2016–2021
Battery Compatibility
Sofar BATT3000/5000 batteries
Pylontech PYLON protocol
Dyness & other LFP batteries
Grid: G98/G99 compliant
Related problem pages
We also support
STS supports all major inverter and battery brands. Sofar HYD inverters are often paired with Pylontech or Dyness batteries — visit those brand pages for battery-specific guidance.
Browse all supported brandsSofar Solar questions answered
For Sofar HYD hybrid inverters, the TOU schedule is configured in SolarMan. Check the charge window is enabled, grid charge is on, and the SoC minimum is below the current battery level. For ME3000SP units, the schedule is set directly on the device — not via an app — and can be inadvertently reset after a power cycle or firmware update.
The ME3000SP is an AC-coupled Battery Energy Storage System that manages charging and discharging alongside a separately installed solar inverter. It was one of the most common retrofitted battery systems in the UK from 2016–2021. Sofar no longer actively markets the ME3000SP, but units remain in widespread operation. We provide full diagnostic and configuration support for ME3000SP systems.
SolarMan offline means the Sofar inverter's WiFi datalogger has lost its connection. The inverter and battery continue operating normally — only remote monitoring is affected. This most commonly happens after a router change, ISP upgrade, or password update. We reconnect the datalogger remotely and restore full SolarMan access.
Yes. For HYD hybrid inverters we configure the TOU schedule in SolarMan. For ME3000SP units we configure the charge window directly on the device. Both approaches can be set up to capture Octopus Agile, Go, Intelligent, Flux, or any other time-of-use rate. Most configurations are completed remotely in a single session.
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Ready to fix your Sofar system?
Tell us your Sofar model and what you're seeing. We'll review the data and come back with a clear diagnosis — usually same day.
- Not affiliated with Sofar Solar
- No fix, no fee
- On-site visits available across the UK
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