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Solis Hybrid Inverter Faults and Repairs

Established in 2005 Ginlong (trading as Solis) have grown to become the third largest inverter manufacturer by sales volume in the world. Arriving relatively late to the UK, since the launch of their Series 2 (2G) inverters to the UK they've since grown from strength to strength, achieving the No1 spot for distributed solar in the UK in 2019.

The most popular Solis hybrid inverter models in the UK are the the RHI-3K-48ES-5G, RHI-3.6K-48ES-5G, RH!-4.6K-48ES-5G and the RHI-5K-48ES-5G.

Solis Hybrid inverters have an LCD display on the front of the chassis, which providing it's working, will highlight any errors with the inverter or the solar PV system that it runs. We have listed and described common faults with Solis inverters and what action to take to resolve them below:

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Solis Hybrid Inverter Faults and Warnings:

Some of the advice we give related to identifying, confirming and or resolving some of the faults detailed below, starts with safely shutting down and restarting the inverter and the solar PV system. This is something that nearly all solar PV systems installed in the UK would have been designed to be carried out safely by the solar PV system owner. However, paperwork, schematics and manuals are not always clear or available, so if you have any concerns about how to do this, we will always be pleased to talk you through the process over the telephone at no charge.

  • OV-G-V - Over grid voltage - The inverter is measuring a grid (mains) voltage that is too high in relation to the parameters that the inverter has been set to safely operate within. If this fault persists contact us to arrange for an engineer to visit to establish whether the fault lies with the inverter, the inverter supply circuit or with the grid.

  • UN-G-V - Under grid voltage - The inverter is measuring a grid (mains) voltage that is too low in relation to the parameters that the inverter has been set to safely operate within. If this fault persists and mains power is available to other local circuits then check that all isolators, MCBs and RCDs on the AC side of the solar PV system are 'On'. If automatic safety devices such as MCBs or RCDs have switched 'Off' then leave them 'Off' and contact us to arrange for an engineer to visit to establish whether the fault lies with the inverter, the supply circuit or with the grid.

  • OV-G-F - Over grid frequency - The inverter is measuring a grid (mains) frequency that is too high in relation to the parameters that the inverter has been set to safely operate within. If this fault persists contact us to arrange for an engineer to visit to establish whether the fault lies with the inverter or with the grid.

  • UN-G-F - Under grid frequency - The inverter is measuring a grid (mains) frequency that is too low in relation to the parameters that the inverter has been set to safely operate within. If this fault persists and mains power is available to other local circuits then check that all isolators, MCBs and RCDs on the AC side of the solar PV system are 'On'. If automatic safety devices such as MCBs or RCDs have switched 'Off' then leave them 'Off' and contact us to arrange for an engineer to visit to establish whether the fault lies with the inverter, the supply circuit or with the grid.

  • NO-GRID - No grid voltage - The inverter is not measuring a grid (mains) voltage suggesting that mains power to the unit has been disconnected. If this fault persists and mains power is available to other local circuits then check that all isolators, MCBs and RCDs on the AC side of the solar PV system are 'On'. If automatic safety devices such as MCBs or RCDs have switched 'Off' then leave them 'Off' and contact us to arrange for an engineer to visit to establish whether the fault lies with the inverter, the supply circuit or with the grid.

  • OV-BUS - Over DC bus voltage - This is an internal error within the inverter. If after the system has been safely shutdown and restarted this condition persists then contact us.

  • UN-BUS - Under DC bus voltage - This is an internal error within the inverter. If after the system has been safely shutdown and restarted this condition persists then contact us.

  • GRID-INTF02 - Grid interference - This is an internal error within the inverter. If after the system has been safely shutdown and restarted this condition persists then contact us.

  • OV-G-I - Over grid current - This is an internal error within the inverter. If after the system has been safely shutdown and restarted this condition persists then contact us.

  • AC Transient Overcurrent - This could be an issue with the backup port wiring or an internal error within the inverter. If after the system has been safely shutdown and restarted this condition persists then contact us.

  • IGBT-OV-I - Over IGBT current - This is an internal error within the inverter. If after the system has been safely shutdown and restarted this condition persists then contact us.

  • DC-INTF - Battery overcurrent - This is an internal error within the inverter. If after the system has been safely shutdown and restarted this condition persists then contact us.

  • IGFOL-F - Grid current tracking fail - This is an internal error within the inverter. If after the system has been safely shutdown and restarted this condition persists then contact us.

  • IG-AD - Grid current sampling fail - This is an internal error within the inverter. If after the system has been safely shutdown and restarted this condition persists then contact us.

  • OV-TEM - The inverter is too hot. This could be due to a number of factors, for example 1) If the inverter is exposed to direct sunlight 2) If the inverter has been installed without adequate ventilation around the chassis which would allow excess heat to dissipate 3) The inverters components are getting too hot due to an internal component fault. If the unit isn't running hot and if after the system has been safely shutdown and restarted this condition persists then contact us.

  • INI-FAULT - Initialization system fault - This is an internal error within the inverter. If after the system has been safely shutdown and restarted this condition persists then contact us.

  • OV-IgTr - Grid Transient Overcurrent - This is an internal error within the inverter. If after the system has been safely shutdown and restarted this condition persists then contact us.

  • OV-Vbatt-H - Battery Hardware Overvoltage - Check if the battery is correctly connected or the battery contactor is disconnected, Restart the battery, Restart the inverter, if the fault still exists contact us.

  • OV-ILLC - LLC Hardware Overcurrent - This is an internal error within the inverter. If after the system has been safely shutdown and restarted this condition persists then contact us.

  • OV-Vbatt - Battery Overvoltage - Assuming that this is an existing installation that has been specified correctly, hasn't recently been changed or added to and has operated before without problems. This could mean either a problem with the batteries or more likely the inverter. Restart the inverter and restart the batteries, if the fault persists contact us.

  • UN-Vbatt - Battery Undervoltage - Assuming that this is an existing installation that has been specified correctly, hasn't recently been changed or added to and has operated before without problems. This could mean either a problem with the batteries or the inverter. Restart the inverter and restart the batteries, if the fault persists contact us.

  • DSP-B-FAULT - Comm. failure between main and slave DSP - This is an internal error within the inverter. If after the system has been safely shutdown and restarted this condition persists then contact us.

  • NO-Battery - Check that the battery is connected correctly, restart the batteries, restart the inverter, if the fault persists contact us.

  • OV-Vbackup - Inverting Overvoltage - This is an internal error within the inverter. If after the system has been safely shutdown and restarted this condition persists then contact us.

  • Over-Load - Overload in backup mode - The power attempting to be drawn from the batteries when in backup mode (i.e. when no grid connection is present) is greater than the inverter can handle. In the first instance switch off the device that is drawing the power and restart the inverter. If this fault persists after a safe shutdown and restart or if EPS mode isn't enabled then contact us.

  • CT-Fail - This is a communications error between the inverter and the mains with the CT clamp. Shutdown the system, disconnect and reconnect the CT clamp and restart. If this condition persists then contact us.

  • MET_Comm_FAIL - This is a communications error between the inverter and the mains with the CT clamp/meter. Shutdown the system, disconnect and reconnect the CT clamp/meter and restart. If this condition persists then contact us.

  • CAN_Comm_FAIL - CAN communication fault - This is a communications error between the inverter and the batteries. Shutdown the system, disconnect and reconnect the communications cable and restart. If this condition persists then contact us.

  • DSP_Comm_FAIL - This is an internal error within the inverter. If after the system has been safely shutdown and restarted this condition persists then contact us.

  • Alarm-BMS - The inverter has picked up that the batteries management system alarm has been activated. Restart the batteries and if the condition persists then contact us.

  • BatName-FAIL - Wrong Battery Model - This is an error code that would only be expected to be seen on initial configuration. If after the system has been safely shutdown and restarted this condition persists then contact us.

 

Solar Inverter Recycling: - Recycling Solis (Ginlong) Hybrid Inverters

Solis Hybrid inverters contain valuable materials such as copper and aluminium, these materials are in high demand and recycling them is significantly less energy intensive than extracting them from ore.

If you find yourself with a damaged or faulty Solis Hybrid inverter, we will be pleased to help you recycle it.

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Solar Power System Testing, Servicing & Maintenance

Regular solar PV system testing, servicing and maintenance will extend the life of your solar PV system and ensure that solar panels are always operating safely and at their best, whilst maximising yields.

We offer complete safety and performance testing for solar PV power systems of any size. Includes panels, cables, inverters, isolators and mains connections.

We provide solar power system testing and maintenance services for residential, commercial, industrial and agricultural clients across Southern, South West England and the West Midlands, with specialist experience working with farmers, developers and commercial and industrial buildings owners.

Solar Power System Testing, Servicing & Maintenance

 

Solar PV Inverter Replacement

If you have a faulty inverter, we offer an efficient, value for money, hassle free inverter replacement service. We offer good advice and install quality equipment with comprehensive warranty and support options. We will test the rest of the system as part of the service, take care of all hardware deliveries, record your new unit's serial number and confirm the warranty details with the manufacturer.

Our engineers work cleanly and will dispose of any unwanted boxes, faulty equipment and packaging.

Many modern inverters can now use wireless home networks to transmit solar generation data to PCs, tablets and smartphones, so if you would like something like this, let us know and we will be happy to set it up as part of the installation.

Solar PV Inverter Replacement

 

Mains/Grid Isolation and Surge Protection

Mains/AC Surge Protection Solar PV Systems

A whole house surge protector is installed to provide protection from transient overvoltages originating from the mains/grid. A whole house surge protector is installed directly inline and as close as possible to the incoming mains/grid supply meter, this allows for surge protection for all circuits and equipment including solar inverters, routers, stereos and other sensitive electrical equipment within the network. The addition of a 100Amp lockable isolator also allows for safe and convenient isolation of all electrical equipment within the network including consumer units, solar inverters, battery storage units and EV chargers from the mains/grid in one place.

Surge protectors are in compliance with the recently updated 18th edition amendment 2 of BS7671.

Mains/Grid Isolation and Surge Protection

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Articles: Further Information, Calculators & Inverter Fault Codes

Lots of articles, calculators and technical information including links for further reading. Covering a range of topics related to the installation and maintenance of solar photovoltaic and electrical systems in the UK.

/Solar PV Information Articles

Solis AC Coupled Inverter Faults and Repairs

The most popular Solis AC Coupled Battery Storage inverter model in the UK is the RAI-3K-48ES-5G. Solis AC coupled storage inverters have an LCD display on the front of the chassis, which providing it's working, will highlight any errors with the inverter or the batteries that it runs. Here we have listed and described common faults with Solis battery storage inverters and what action to take to resolve them.

How to provide power to a house using a portable generator

We look at changeover switches, the importance of earthing, generator loadings, isolating non essential loads. Where to locate the generator and how best to safely isolate the mains supply and switch to a generator supply.

Solis Inverter Faults and Repairs

Solis inverters have an LCD display on the front of the chassis, which providing it's working, will highlight any errors with the inverter or the solar PV system that it runs. We have listed and described common faults with Solis inverters and what action to take to resolve them.

All articles

 

What Our Customers Say:

"We had been let down by a failure on our system,and the manufacturer of the part was no longer trading. We called Glen during the afternoon and he was there in the evening. He examined the system and recommended a replacement manufacterer, promising to come back and fit in the new part once it arrived. We informed Glen of the arrival on a Friday PM, he was there fitting the new part by 10:30 on the following Monday. Of course it worked. That is what you call service, and guess who is looking after all our requirements in the future. Highly recommend this company." - Gill Spencer, Newbury

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Case Studies

We've carried out Solar PV System design, installation, testing, repair and maintenance work on solar PV systems of all shapes and sizes all across the UK.

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Areas Served:

We are located in Wanborough, very close to Swindon in Wiltshire, Southern England, UK. From here we service clients within a 90 minute driving radius including the towns, cities and regions below:

Swindon: Abingdon, Aldbourne, Andover, Banbury, Basingstoke, Bath, Berkshire, Bicester, Blunsdon, Box, Bracknell, Bradford on Avon, Bristol, Burford, Calne, Camberley, Carterton, Cheltenham, Chippenham, Chipping Norton, Chipping Sodbury, Cirencester, Corsham, Cricklade, Devizes, Didcot, Evesham, Faringdon, Fleet, Gloucester, Gloucestershire, Hampshire, Henley-on-Thames, Highclere, Highworth, Hook, Hungerford, Keynsham, Kingsclere, Lambourn, Lechlade, Lyneham, Maidenhead, Malmesbury, Marlborough, Marshfield, Melksham, Minety, Newbury, Oxford, Oxfordshire, Pewsey, Purton, Ramsbury, Reading, Royal Wootton Bassett, Salisbury, Shalbourne, Slough, Stow, Swindon, Tewkesbury, Thatcham, Trowbridge, Wanborough, Wantage, Warminster, Wiltshire, Winchester, Windsor, Witney, Wokingham, Worcester, Wroughton and Yate.

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