Skip to content
07944 877 329 hello@solar-tech-support.co.uk
Alectrona Get a quote
Problem diagnosis · SolarEdge

SolarEdge not producing — no generation from HD-Wave inverter

Your SolarEdge shows sunshine but zero generation. The monitoring portal shows the inverter online but power output is stuck at 0W. We walk you through SolarEdge Go diagnostics, DC isolator checks, and optimiser fault isolation — step by step.
Free remote diagnostic £125 only if we fix it remotely
Start diagnostic
  • Works with all HD-Wave models
  • No fix, no fee
  • Not affiliated with SolarEdge
Not sure what's wrong?

SolarEdge not producing despite good weather. Share your SolarEdge Go alerts or monitoring portal screenshot and we'll identify the fault path remotely.

Book remote diagnosticBack to SolarEdge hub

Safety: Do not touch DC cabling or open the inverter enclosure. All checks on this page use the monitoring portal and SolarEdge Go only.

5.0
Rated 5.0 on Google Read all 151 reviews

Givenergy panels and battery had been offline for a couple of months after various changes by Givenergy to their app etc. Ron did a fantastic job of sorting it out - got things up and running almost immediately, followed by some fine tuning to get things fully configured. What a legend - great service, great comms, great result.

Mr Chapman · Aug 2026 Google

I've spoken to Ron a couple of times with issues with my Givenergy installation. Such a friendly knowledge guy very highly recommended. Thank you very much for resolving my issues

michael fairhurst · May 2026 Google

Just had my whole givenergy system go down. Battery and inverter. Ron sorted me out today 3 hours to get it all sorted. Clear instructions and successful. Could not ask for better. Now that givenergy has gone bust i was concerned as to where to go for help. I have found it and can recommend them to all you givenergy users out there. Off for a cup of coffee now😄

Eaton Edwards · Jul 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

Diligent and reliable service.

Samuel Jakovljevic · Jul 2026 Google

Absolutely wonderful. Would recommend without hesitation. I had an issue I was thinking would never be fixed and they fixed it. Help, advice and support every step of the way. I can't recommend highly enough. Thank you so much ⭐

jill brocklehurst · Jul 2026 Google

Written by · Independent Solar Engineer Last updated

Safety: Do not open the inverter or touch any DC cabling. If you discover a fault code suggesting a DC wiring issue or arc fault, isolate the DC and AC switches and contact a qualified engineer immediately.

Diagnostics

5-step diagnostic to find the no-production cause

Follow these steps in order. Most no-production faults are found in the first two checks.

1

Check SolarEdge Go / monitoring portal for active alerts

Open the SolarEdge monitoring portal (monitoring.solaredge.com) or SolarEdge Go on your phone. Look for the Alerts or Status section. Write down any fault codes you see. The most common codes are:

Pairing failed = Optimiser communication lost (shows as N/A in the portal)
Arc Fault Detected = Safety protection triggered. Isolate, do not reset
G codes = Grid voltage/frequency fault

If no fault code appears but production is zero, move to Step 2.

2

Check DC input voltage — DC isolator and fuses

In the monitoring portal, find the Inverter Details or Live Data section. Look for "DC Input Voltage" or "DC Volts". A healthy system should show 300–450V depending on the time of day and array size. If it shows 0V:

• DC isolator is off — Check the isolator switch on your main DC breaker board. It should be in the ON position (switch down or handle pointing to the line).
• String fuses blown — There are usually 1–2 fuses between the array and the inverter. A blown fuse will read 0V. You may smell a burning smell or see discolouration near the fuse holder.
• Open-circuit wiring fault — A disconnected or damaged DC cable or connector will also give 0V. This requires a qualified engineer to diagnose and fix.

If DC volts show 0V, start with checking the DC isolator. If it's on and fuses are intact, you likely have a wiring issue — stop here and contact a qualified engineer.

3

Check optimiser status in SolarEdge Go — communication analysis

Open SolarEdge Go and navigate to the Inverter Status or Optimiser Overview. Review each optimiser in the list. Look for patterns:

All optimisers have dropped out

This is a string-level problem. The inverter cannot communicate with any optimisers. Most likely cause: damaged DC wiring, loose connector, or blown string fuse.

1–2 optimisers have dropped out

Those specific optimisers have failed or lost DC power. The rest of the array should still produce. Affected units need replacement.

Note which optimiser(s) show fault codes — you'll need this information for your engineer or warranty claim.

4

Check AC isolator and grid connection

SolarEdge will not produce if disconnected from the grid, even if the DC side is fully operational. Check two things:

AC isolator switch — Find the AC isolator (usually a manual switch on your main AC breaker board). It should be in the ON position.
Grid voltage in monitoring — In the portal, check the AC voltage reading under Inverter Details. It should show your normal grid voltage (230V for single-phase UK). If it shows 0V, there's a grid connection fault or the AC isolator is off.

If the AC isolator is on and the portal shows 0V AC, the problem is downstream of the isolator — likely a tripped circuit breaker or grid connection fault. Check your main board for tripped breakers.

5

Check for SolarEdge Go firmware lockout — post-update commissioning

If no-production started after a firmware update, the inverter may have triggered a commissioning lockout. SolarEdge Go may display "System incomplete" or similar messaging. Try a brief manual power cycle:

1. Switch the DC isolator to OFF. Wait 10 seconds.
2. Switch the AC isolator to OFF. Wait 60 seconds.
3. Switch the AC isolator back ON. Wait for the inverter to boot (5–10 seconds).
4. Switch the DC isolator back ON.
5. Check SolarEdge Go — the inverter should resume normal operation.

If the problem persists after a full power cycle, the inverter may need formal re-commissioning through SolarEdge Go (this requires Bluetooth access during setup). Contact your installer or a qualified SolarEdge engineer.

How SolarEdge architecture affects no-production diagnosis

SolarEdge HD-Wave inverters use power optimisers mounted on each panel. Unlike string inverters where one fault can kill the entire array, individual optimiser faults reduce output proportionally — if one of eight optimisers fails, you lose about 12.5% of production, not 100%. This is why the monitoring portal's panel-level data is so valuable for diagnosis.

SolarEdge Go is the configuration and commissioning tool. It communicates with the inverter over Bluetooth during setup and provides real-time fault codes and optimiser status. The monitoring portal (accessible online) shows historical data and per-panel production. Common no-production alerts: pairing failed (optimiser communication lost), an isolation fault, and Arc Fault Detected, which is a safety event: isolate, do not reset.

A DC isolator or blown fuse will cause immediate and complete loss of DC power — the monitoring portal will show 0V DC input. An AC isolator fault or grid disconnection will cause the inverter to stop producing even though the DC side shows full voltage — the portal will show 0V AC and the inverter will display a grid fault code.

Related problems
Learn more
Back to

Return to the SolarEdge brand hub to explore other common faults and services.

SolarEdge support hub
FAQ

Common SolarEdge no-production questions

No production usually means either: (1) a DC power issue — tripped DC isolator, blown fuse, or wiring fault; (2) an AC grid disconnection; or (3) an inverter/optimiser fault code that's blocking operation. Check SolarEdge Go for active alerts first. If you see a pairing failure, an isolation fault, or an Arc Fault Detected alert, that's your specific fault path.
A pairing failure means the optimiser has lost communication with the inverter. If every optimiser has dropped out, the problem is at the string level — usually a wiring fault, loose connector, or blown fuse. If only one or two have, those specific optimisers have failed or lost DC power and need replacement.
Yes — an isolation fault is one of the most common reasons a SolarEdge sits at 0W in otherwise perfect sun. It is flagged in SolarEdge Go as an isolation or low insulation-resistance (Riso) alert — some owners see it as an Error 18xx code — and it means the inverter has detected that the DC side's insulation to earth has dropped too low, so it stops generating as a safety measure rather than risk a leakage current. Common causes are water getting into a connector or junction box, damaged or pinched DC cable insulation, a faulty panel or optimiser, or simply heavy damp after rain (some isolation faults clear on their own once everything dries out). Because it is a live-DC earth-insulation problem, it needs an engineer with an insulation-resistance (Megger) tester to find the leak safely — don't open the DC side yourself.
If the portal shows optimisers as 'offline' or 'N/A' but the inverter display is lit and the portal is responding, the inverter is powered but those specific optimisers aren't communicating. This indicates a local fault with those units (or their DC wiring), not a total system failure. Check SolarEdge Go for the specific fault code to identify which optimisers are affected.
Only if it's a simple isolator or configuration issue. Checking that DC and AC isolators are on, resetting after a firmware update, and reviewing SolarEdge Go settings are safe. If you find a fault alert, or an Arc Fault Detected warning, or suspect a wiring issue, stop and contact a qualified engineer — do not open the inverter or touch DC cabling.
The remote diagnostic is free — send your SolarEdge Go alerts or a monitoring screenshot and we'll work out the fault path at no charge: whether it's a DC or AC isolator you can switch back on, a firmware lockout that clears with a reset, or a hardware fault that needs a visit. If we can sort it remotely — a setting, a re-commission, or talking you through a safe reset — there's a flat £125 fix fee, and nothing if we can't. If it needs hands-on work, such as an isolation-fault leak hunt, a failed optimiser, or DC string repair, that's an on-site visit from £295; a failed optimiser or inverter still inside warranty is replaced with the unit supplied free by SolarEdge. You'll always get the cost up front.
Most no-production faults are diagnosed in a single same-day remote session once you send your SolarEdge Go alerts — we can usually identify the cause within about 30 minutes. If it turns out to be a reset or a setting, you could be generating again the same day. If it needs an engineer on site (an isolation-fault hunt, an optimiser or DC repair) we'll book the visit, and most are completed in one appointment; a warranty inverter or optimiser replacement then depends on SolarEdge's turnaround, typically 2–4 weeks for the part. Every day at 0W is lost generation, so it's worth starting the diagnostic quickly.
Book

Need help with your SolarEdge no-production fault?

Share your SolarEdge Go alerts or monitoring screenshot. We identify the exact fault path remotely in a single session.

  • No fix, no fee
  • SolarEdge Go and monitoring portal review
  • Clear repair or replacement path

By submitting you agree to be contacted about your diagnostic request. We don't share your data with 3rd parties.

Call 07944 877 329 Book free diagnostic