Solar Panel Maintenance And Repair

Solar PV system stopped working

Solar PV system stopped working, contact us we can help with all issues on solar PV electricity generating system repairs and maintenance.

We aim with some simple questions about your system to be able diagnose the system problem for you and offer a cost effective solution.

t) 01509 341971


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Fronius Symo 20.0-3-M Insulation RISO fault

Twycross – Fronius Symo 20.0-3-M insulation RISO fault

The Fronius Symo 20.0-3-M insulation RISO fault on the Solar PV system was quickly identified as rat damage to DC cables on the array.


104 Renesola JC245M-24-Bb panels were removed where each string was carefully checked and repaired as required before mechanical protection was installed to protect from further attacks.

All debris from the roof was removed from under the arrays before the system was reinstated.

Renesola JC245M-24-Bb Panels
Fronius Symo 20.0-3-M fault

Once complete all string cables were again tested in both dry and wet conditions.


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Replacement Solar PV Total Generation Meter

Warwick –Replacement Solar PV

Total Generation Meter

Replace faulty Elster A100C solar PV total generation meter for a new Landis & Gyr E110

including paperwork for registration of new meter with Feed In Tariff provider.

Elster A100
Landis & Gyr...

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Mastervolt XS Fault Code HW Fail 3

Tipton – Wolverhampton – Mastervolt XS fault code HW FAIL 3

Mastervolt XS was reported with a fault code HW FAIL 3.

Attended site and carried out preliminary inspection.

The inverter was found to have been located in an unsuitable location within an enclosure in full sun.

Mastervolt inverter mounted on south facing external wall in cabinet

This probably contributed to its early failure due to the build up of excessive heat in a poorly ventilated enclosure.

The inverter was found to be beyond economical repair.

The inverter was replaced with a SMA Sunny Boy SB2.5-1VL-40 complete with on board wifi monitoring and relocated to a cooler...

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Fronius IG TL error state 447

Court House Green - Coventry – Fronius IG TL ERROR state 447


System reported as intermittent fault.

After an initial inspection an insulation resistance fault was located on the array DC wiring.

A second visit would be required to remove panels and investigate further.

Severe damage was found to DC cables on roof which was repaired with the array reinstated.

Fronius IG TL error state 447

Fronius IG TL error state 447

Poor workmanship also contributed to the insulation resistance fault due...

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Samil Power Solar River 4000TL-D

Bingham – Nottingham – Samil Power Solar River 4000TL-D

Samil Power Solar River 4000TL-D

Samil Power Solar River 4000TL-D inverter reported to have failed, no yield from system.

System thoroughly checked and tested, no fault could be found.

Inverter re-started and was found to be working ok.

System left in working...

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Solar PV system and inverter Maintenance

Over January we have looked back on some of the solar PV system and inverter maintenance work we have been doing, so the following blogs are a few of the inverter maintenance and maintenance or installation cases we have dealt with since the Summer which we thought you may find interesting........

  • Blackfordby – Swadlincote - SMA Sunny Boy SB1500
  • Radcliffe on Trent - Nottingham –  Fronius IGTL
  • Radcliffe on Trent – Nottingham – SMA Sunny Boy SB2500HF-30
  • Hamilton – Leicester – Power One PVI-3.6-OUTD error E031
  • Court House Green - Coventry – Fronius IG TL error state 447
  • Tipton – Wolverhampton – Mastervolt XS fault code HW FAIL 3
  • Hinckley – Growatt 3000MTL - service visit
  • Walsall – Mastervolt XS4300 showing INSULATION fault
  • Long Eaton – Nottingham – Schuco/Sunny Boy...

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Fronius solar inverter replacement-Twycross

As a Fronius Service Partner this enquiry originated from the Fronius help desk.  We were informed that the Fronius inverter had fault code 417 showing which indicates a DC card failure. The customer was offered a replacement DC card with a 1 year warranty or a replacement Fronius Galvo 1.5 inverter with a full 5 years’ manufacturers warranty.  In this case the customer decided it would be prudent to opt for the latest technology and have a new solar inverter. As part of the works the customer requested that the solar inverter be relocated.  It was also noted as part of our site visit that the DC isolator switch was none lockable, a regulatory requirement. This was also rectified as part of the inverter replacement/relocation work. Fronius solar inverter replacement and repair


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Leamington Spa Solar PV fault diagnosis and fix

SMA SB4000TL solar inverter - Inverter showing intermittent insulation resistance fault, (fault code 35).

C Gascoigne were recently called to a site to locate and provide solar PV fault diagnosis on a suspected fault as PV cable connectors were left unsecured in puddles of water on a roof mounted array. We are currently waiting for a dry day to re-attend and safely remedy the problem.  It was also noted whilst on site that the panels had been mounted with the diode boxes at the bottom of the panels.  This may lead to water ingress as water flows down the cables and toward the boxes instead of away from the boxes.  The array frame has also been installed directly onto the felt roof, this would benefit from being installed on rubber matting to...

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SolarEdge certified Inverter Installation and maintenance

We are delighted to announce C Gascoigne Ltd  are now  SolarEdge Certified Installers offering SolarEdge inverter installation and maintenance services.

If you are to experience any problems with your Solar Edge inverter or inverters, optimizers or power boxes, get in touch with our team of solar PV

As SolarEdge certified installers we can install, replace, fix or repair, speaking to SolarEdge on your behalf ; checking if your system is under warranty and coordinating the repair process  as easily as possible for you. We can do this on all SolarEdge systems in place of your original installer.

Contact us via telephone on 01509 341971 or via e-mail or visit our contact page here

You can be confident we...

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