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Brand support · Growatt

Growatt Inverter Support — Error 04, Error 117 & ShinePhone Faults

Error 04, Error 117, ShinePhone offline, isolation faults — we diagnose Growatt inverters at the engineering level. Remote-first using ShineServer data and fault code logs, but WiFi isn't remote work: if the logger needs reconnecting to your WiFi, we can set it up on site, from £195. Independent from Growatt and your original installer.
Free remote diagnostic £125 only if we fix it remotely
  • Not affiliated with Growatt Technology
  • All MIC, MIN, MOD and SPH models supported
  • Error code to root-cause diagnosis
Seeing a Growatt error code?

Error 04 or Error 117 — we diagnose Growatt systems remotely in a single session. ShinePhone offline? Follow the general WiFi checks, and if the logger needs reconnecting to your WiFi, we can set it up on site, from £195.

Book your free remote diagnosticGeneral WiFi checks

Safety: If you have Error 04 (insulation fault), do not attempt to reset the system without identifying the cause — isolate at the DC switch.

Absolutely amazing service. Ive had a couple of issues with my Givenergy system and couldn't manage to get in touch with Givenergy after they went bust. So I was searching on Google and came across Rons number. I sent Ron a WhatsApp message and got a prompt reply and he resolved the problem I had with my system. I can't recommend Ron enough its not often you get such a good service in this day and age. If you are experiencing issues with your solar system Ron is the man to contact.

michael fairhurst · Jul 2026 Trustpilot

My 3-year old GivEnergy Solar/Inverter/Batteries installation went down with all generated electricity going to the grid and absolutely no help available from the Administrators! Thankfully, I found Solar Tech Support and Ron, who used to be a GivEnergy installer. His knowledge and ability are phenomenal and he sorted everything out remotely. I cannot recommend him more highly and a really pleasant guy to deal with! Very many thanks Ron!!

Jerry Robson · Aug 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

We have a GivEnergy system, both GivEnergy and our installer have gone bust! Ron was able to remotely log in to our system and sort the issue within about 30mins. Would definitely recommend and will be using in future

Chris Robson · Oct 2026 Google

My issue was assessed and resolved quickly once the engineer was able to look at the problem. This took a little longer than I had expected (3 days) and keeping the PC on all day/everyday with Sentinel open was a little cumbersome I thought. That said, with little support coming from GivEnergy nowadays it was good to find someone who knew the platform and could resolve my issue.

Terry Hanney · Oct 2026 Google

Absolutely fantastic customer service. The team were incredibly helpful, responsive and genuinely willing to do everything they could to help get things sorted. With all the uncertainty surrounding the future of GivEnergy at the moment, it was particularly reassuring to have people who were knowledgeable, approachable and prepared to step in when needed. After a glitch with my firmware update caused problems with my system, these guys really did come in and save the day. They took the time to investigate the issue, explain what was happening and work towards getting everything back up and running. It’s refreshing to deal with a company that genuinely seems to care about its customers and is willing to go the extra mile when something goes wrong. Superb service from start to finish. Many thanks for all the help and support — it’s very much appreciated. Highly recommended.

robert lee · Sep 2026 Google
Growatt Faults

Common Growatt problems we diagnose

Every fault below has a proven diagnostic path. Click through for the specific page or book a diagnostic if you're unsure.

Fault Codes

Growatt fault code index

Growatt error codes appear on the inverter LED display and in the ShinePhone app. Common codes: Error 04 (insulation failure), Error 117 (relay fault), Error 107 (sampling difference is big), Error 122 (bus voltage too high). Share your exact code when you book — we identify the root cause as part of the remote diagnostic.

Fault code categories
·Isolation / DC faults
·Grid faults
·AC & inverter faults
·Communication errors
Services

What we do for Growatt owners

Remote Growatt Diagnostic

We review ShineServer data, inverter settings, and fault history to identify the exact fault remotely.

✓ Error code root-cause analysis
✓ ShineServer data review
✓ Settings validation
Book remote diagnostic

Growatt System Recovery

Installer gone bust, ShineServer access lost, or monitoring never set up correctly? We recover access and rebuild documentation.

✓ ShineServer access recovery
✓ Monitoring reconfiguration
✓ Warranty evidence pack
Start recovery

On-Site Growatt Repair

Isolation fault investigation, DC cable fault location, CT clamp correction, component replacement.

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

Growatt datasheets, manuals & warranty PDFs

Download datasheets, installation manuals and warranty documents for Growatt MIN, MID, MOD and SPH hybrid inverters. Self-hosted and always current.

Product datasheets & specifications
Installation & commissioning manuals
Warranty terms & coverage documents
App & software setup guides
Wiring diagrams

About Growatt systems — what you need to know

Growatt is one of the UK's most widely installed inverter brands — particularly popular with budget-conscious installers. The MIC, MIN, and MOD series cover residential string inverter installations. The SPH and SPA series are hybrid inverters with battery integration capability. All Growatt inverters display fault codes numerically on the front LED panel and report them to the ShineServer cloud via the ShineWiFi or ShineLink logger. Growatt's ShinePhone app provides remote monitoring and fault history access.

The most common Growatt searches we handle are: Growatt Error 04, Growatt Error 117, Growatt ShinePhone offline, Growatt not producing, and Growatt isolation fault. Error 04 is particularly common in older installations where panel connectors or cable insulation have degraded — it is a genuine safety event, not a nuisance fault. STS provides independent Growatt support across the UK — not affiliated with Growatt Technology Co. Ltd.

We also support

STS supports all major inverter and battery brands — not just Growatt. If you have a mixed-brand system or are comparing options, visit the brand hub.

Browse all brands
FAQ

Growatt questions answered

Error 04 on a Growatt inverter is an insulation resistance failure. The inverter has detected that the DC isolation between the solar panels and ground has dropped below the safe threshold (1MΩ). It is a safety protection — the inverter will not run until the fault is cleared. Causes include a faulty panel, damaged DC cable, or water ingress into a connector or junction box. Book a diagnostic — we'll identify the source of the fault remotely in most cases.
Growatt documents Error 117 as a relay fault, raised when the relay check fails six times. Something is wrong with the grid-isolation relay or its circuit, and the inverter stops generating. Growatt's remedy is to restart the inverter once, and if the error is still there, to contact Growatt service to have the inverter replaced. It is not a grid-voltage code and not a high-output code. It belongs to the legacy TL, MTL, MTL-S and 10-20kUE families; on MIN TL-X and MOD TL3-X the relay fault is Error 405 instead. We can read your ShineServer fault history remotely and tell you whether the restart held. Full detail on the Error 117 page.
Causes include: the WiFi logger (ShineWiFi or ShineLink) losing its connection, the router password changed, ShineServer cloud-side outage, or the logger hardware has failed. The system usually keeps running, but offline doesn't prove it, so check the inverter's own screen. See the ShinePhone offline fault card above for diagnostic steps. If the logger won't reconnect to your WiFi, we can set it up on site, from £195.
No. Error 04 means the system has detected a reduction in electrical isolation between the PV panels and earth. Running through this fault risks electric shock. The inverter shuts down as a safety measure. Do not override it — identify and fix the cause first. Isolate the system and book an inspection — we assess remotely where possible.
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Ready to fix your Growatt system?

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

  • Not affiliated with Growatt Technology Co. Ltd
  • No fix, no fee covers remote fixes. On-site work is quoted in writing before we start.
  • On-site visits available

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Call 07944 877 329 Book free diagnostic