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Enphase · Common problems & faults

Enphase common problems & faults

STS engineers diagnose and repair 2 common problems & faults on Enphase 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. The WiFi is the exception: it's never remote work. If the WiFi still won't connect after the guide, we can set it up on site, from £195.
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Rated 5.0 on Google Read all 151 reviews

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

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

We reached out to Solar Technical Support after our solar energy system stopped working. As GivEnergy 'solar orphans,' we have been extremely pleased with the service from STS - our system was back up and working within a day of us contacting them. We found other solar engineers reluctant or unable to help us, so it has been great to find this organisation. We would definitely use them again and would recommend them to anyone, especially GivEnergy orphans!

Fiona Ford · Aug 2026 Google

I can’t praise this firm enough. After hearing my solar panels rattling in very windy conditions, I contacted Solar Tech (as my installers no longer trade). Ronald was fantastic at explaining what he thought the issue was likely to be. Communication was great throughout keeping me fully updated. The team worked really hard on the day to carry out the necessary work. I can now sleep soundly at night without worrying about the solar panels on my roof. I would thoroughly recommend this firm. Thank you for sorting the problem out.

Carolyn Addison · 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 Solar/Inverter/Batteries system went down and the GivEnergy Administrators are totally non- existent/useless. Luckily, I found Ron, who used to be a GivEnergy Installer, and beyond my wildest dreams, he sorted everything out remotely from 200 miles away. His approach to everything is very professional and I cannot recommend him more highly. Thanks very much Ron!!

Jerry Robson · Aug 2026 Trustpilot

Written by · Independent Solar Engineer Last updated

What goes wrong on Enphase systems

Most Enphase faults we see are monitoring faults, not generation faults. There are two communication links that can break: the Envoy gateway talking to the Enlighten cloud over your internet, and the microinverters talking to the Envoy over the AC wiring. Working out which link has dropped is most of the diagnosis.

If the whole production graph has holes in it, the Envoy has lost its internet connection. A router swap, a changed WiFi password or a weak signal in the loft are the usual causes, and because the Envoy only buffers seven days of data locally, a long outage means lost history. Our monitoring gap guide covers the checks in order.

If one panel sits grey while the rest report fine, the fault is at that panel: a failed microinverter, a tripped branch circuit breaker, or powerline interference blocking the signal. A monitoring gap costs you data, not power, but a grey panel can mean real lost output, so it is worth checking promptly. The panel not reporting guide shows how to narrow it down before anyone goes near the roof.

Common problems & faults

2 common problems & faults we cover

Each topic links through to an engineer-led step-by-step guide.

Monitoring Gap — Missing Enlighten Data Fix

Your Enlighten production graph has holes — hours or days of missing data where the system may have been generating but nothing was recorded.

See Monitoring Gap

Panel Not Reporting — Enlighten Microinverter

One panel in Enlighten is grey — no data, no production. The microinverter has failed, lost its AC connection, or lost the powerline…

See Panel Not Reporting
FAQ

Enphase fault questions answered

Look at the pattern in Enlighten. If every panel shows the same missing data for the same period, the Envoy has lost its internet connection and the microinverters are fine. If the Envoy is online and one panel sits grey while the others report normally, the fault is at that panel: the microinverter itself, its branch circuit breaker, or the powerline signal back to the Envoy. A cluster of grey panels usually means a tripped breaker on that branch circuit, because Enphase microinverters are wired in groups.
Some can: firmware problems and powerline interference can often be resolved from your Enlighten data and Envoy logs without a site visit. An Envoy that won't reconnect to your WiFi after a router change, even with our Envoy WiFi setup guide, isn't remote work: we can set it up on site, from £195. A failed microinverter can't be fixed remotely either: they are sealed units with no serviceable parts, so a dead one needs physical replacement by an electrician with roof access, and remotely we confirm the unit has failed and prepare the warranty claim evidence. IQ-series microinverters carry a 25-year warranty that stays valid even if your installer has gone bust.
Nothing. The remote diagnostic is free for everything but the WiFi: we review your Enlighten history and Envoy status, tell you exactly what has failed, and quote before any work is done. If it turns out to be something we cannot fix remotely, like a microinverter that needs replacing under warranty, you pay nothing and you keep the diagnostic findings to take to the manufacturer. No fix, no fee.
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Need an Enphase engineer?

Tell us what's happening with your Enphase system. Free remote diagnostic, no-fix-no-fee. Most configuration faults resolved during the 30-minute session. We don't set up or diagnose WiFi remotely or over the phone: it's quicker and more reliable done on site.

  • No fix, no fee covers remote fixes. On-site work is quoted in writing before we start.
  • Emergency response within 4 hours during business hours
  • Written report regardless of outcome

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