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Brand support · Hanchu ESS

Hanchu ESS Inverter Support — Battery Faults, SolarMan Setup & Tariff Configuration

Hanchu battery not charging, SolarMan offline, BMS communication errors, or grid disconnection faults — we diagnose Hanchu hybrid systems at the engineering level. Remote-first using SolarMan data and charge schedule logs. Independent from Hanchu and your installer.
Free remote diagnostic · pay only if we fix it — from £75 if remediable remotely
  • Not affiliated with Hanchu ESS
  • All Hanchu HC-HY hybrid models supported
  • SolarMan & tariff configuration specialists
Hanchu battery not charging overnight?

Most Hanchu configuration issues are fixed remotely in a single session. Tell us what you're seeing and we'll work it out.

Book your free remote diagnosticSee the Solar Health Plan

Safety: If your Hanchu battery is showing error lights or unusual behaviour, isolate at the DC switch before investigating.

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

Ronald was great to help me sort out my giv energy inverter issue since company has gone bankrupt in april 26.

Ankur Kr. Gupta · Jun 2026 Google

Ron is incredibly knowledgeable about solar installs in general but knows givenergy products inside out and the key personnel that worked there from the start to the end. My problem was spurious in its nature but Ron spotted it straight away when he understood the installation details. In essence the installers didn’t fit the correct trip switch. He also gave me hope that in the future hardware repairs could be possible but it’s still early days. This guy really is in the know and keen to sucas a business If you need help don’t hesitate

Geoffrey Heathcote · Jun 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

My GivEnergy hybrid inverter + battery system had worked faultlessly for 3 years when it suddenly stopped charging and discharging the battery. On contacting my supplier, who had used a sub-contractor for the installation work, I was provided with an email address at GivEnergy but, as it turned out, this is only for GivEnergy Software who are not able to assist. A Google search led to the Solar Tech Support web site, which contains a wealth of helpful information. I requested a remote solar diagnostic, and after providing Ron access to my inverter, he was able to identify and fix the problem within minutes. I am very impressed by Ron’s expertise and knowledge, which included useful information on the current state of GivEnergy Ltd. I would thoroughly recommend Solar Tech Support.

Simon Riddle · Jun 2026 Google

Our 3 year old GivEnergy batteries froze. They were showing 0% on the app, but they were fully charged. Some how Ron took over our inverter and remotely cured the problem. We live in King’s Lynn, he is in Leeds I believe. Very grateful.

David Lewin · Jul 2026 Google
Hanchu Faults

Common Hanchu problems we diagnose

Every fault below has a proven diagnostic path. Book a diagnostic if you're unsure where to start.

Battery & Charging
Most common
Battery not charging overnight

Hanchu hybrid inverter connected but battery stays flat overnight despite an Octopus or time-of-use tariff. Most often a TOU schedule configuration error in SolarMan — charge window not enabled, grid charge toggle off, or SoC target already met.

See diagnostic guide →
Tariff
Octopus / cheap-rate charging not working

Hanchu inverters are configured via SolarMan's TOU schedule. Common issues include charge windows offset by BST/GMT, the grid charge enable setting being toggled off, or peak shaving settings overriding the schedule. We configure the full TOU schedule remotely.

See diagnostic guide →
BMS
BMS communication fault

Hanchu LV batteries communicate with the inverter over CAN bus. A BMS comm fault means the inverter can't read the battery state, which causes it to stop charging or discharging. Can be caused by a loose CAN cable, incorrect BMS pairing, or a battery firmware mismatch.

See diagnostic guide →
Common
Battery not discharging as expected

Battery fully charged but not powering the house during peak times. Often caused by a discharge schedule not configured in SolarMan, or the minimum SoC threshold being set too high. EPS/backup mode must also be correctly configured if backup power is needed.

See diagnostic guide →
Services

What we do for Hanchu owners

Remote Hanchu Diagnostic

We review SolarMan data, TOU schedules, BMS logs, and error history to identify the exact fault without a site visit.

SolarMan data review
TOU schedule audit
Battery BMS fault isolation
Book remote diagnostic

Hanchu Tariff Configuration

We configure your Hanchu charge and discharge schedule from scratch for Octopus Agile, Intelligent, Go, or Flux. Most configuration faults resolved in a single remote session via SolarMan.

Full TOU schedule build in SolarMan
Peak shaving & export limit setup
Grid charge enable verified
Book tariff config

On-Site Hanchu Repair

EPS circuit verification, CAN bus cable checks, BMS pairing, DC fault location, and component replacement for Hanchu inverters and Blade LFP batteries.

Evidence-led targeted checks
Safety-focused report
Repair or replacement path
Discuss visit

About Hanchu ESS — what you need to know

Hanchu ESS is a Chinese energy storage manufacturer producing hybrid inverters and LiFePO4 (LFP) battery systems for the residential and light commercial market. Their UK range includes single-phase hybrid inverters — the HC-3.68KW-HY, HC-5KW-HY, and HC-6KW-HY — paired with Blade LFP battery modules in capacities from 3.2kWh to 9.4kWh per unit. The inverters carry an IP66 rating, a 12-year inverter warranty, and a 10-year battery warranty. Blade LFP chemistry offers a high 95% depth of discharge, making nearly all the stated capacity usable in daily cycling.

Monitoring and schedule configuration is handled through the SolarMan platform (SolarmanPro for installers, the SolarMan app for homeowners). The most common support queries we handle for Hanchu systems are: Hanchu battery not charging overnight, Hanchu SolarMan offline, Hanchu BMS communication fault, Hanchu grid disconnection, and Hanchu Octopus tariff setup. Hanchu systems are distributed in the UK through companies including Powerland and Solar Battery Group. STS provides independent support — not affiliated with Hanchu ESS.

Inverters
HC-3.68KW-HY — 3.68kW single-phase
HC-5KW-HY — 5.0kW single-phase
HC-6KW-HY — 6.0kW single-phase
Also: 7kW, 8kW, 10kW models
LV Batteries (Blade LFP)
3.2kWh, 3.68kWh, 5.12kWh
9.4kWh per module
95% DoD · 10yr warranty
Key Specs
Monitoring: SolarMan / SolarmanPro
IP66 rated (inverter)
12yr inverter warranty
Grid: G98/G99 compliant
We also support

STS supports all major inverter and battery brands — not just Hanchu. If you have a mixed-brand system (e.g. Hanchu inverter with Lux or Dyness battery), visit the brand hub.

Browse all supported brands
FAQ

Hanchu questions answered

Hanchu inverters are configured via SolarMan's Time of Use (TOU) schedule. The most common causes of overnight charging failure are: the charge window not being enabled, the grid charge toggle being off, or the SoC minimum being set too high so the battery never triggers a charge cycle. BST/GMT clock offsets also commonly cause windows to fire at the wrong time. We configure the full schedule remotely.
SolarMan requires a stable WiFi connection from the inverter's datalogger. After a router change, password update, or firmware push, the datalogger loses connectivity. The inverter and battery continue operating normally — only monitoring data is lost. We reconfigure the datalogger remotely to restore SolarMan.
Hanchu batteries communicate with the inverter via CAN bus. A BMS comm fault means the inverter has lost communication with the battery management system. Causes include a loose or damaged CAN cable, incorrect DIP switch address settings on the battery, or a mismatch between inverter and battery firmware versions. This is typically diagnosed and resolved remotely via SolarMan logs.
Yes. We configure the TOU charge schedule in SolarMan to correctly capture cheap rate windows for Octopus Agile, Go, Intelligent, Flux, or any other time-of-use tariff. This often resolves overnight charging complaints that aren't hardware faults — just incorrect or incomplete schedule configuration.
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Ready to fix your Hanchu system?

Tell us what's happening. We'll review your SolarMan data and come back with a clear diagnosis — usually same day.

  • Not affiliated with Hanchu ESS
  • No fix, no fee
  • On-site visits available across the UK

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