Maintenance & Servicing

Why Choose Us?

Why is Maintenance on my Solar System important?

Our experienced and specially trained solar technicians will perform the maintenance. We allow them the time to thoroughly check and test everything. For smaller systems this may not take as long as bigger more complicated systems. The technicians will need to access your switchboard and inverter, if these are somewhere that they can access without you being at home then it is not necessary for you to be there, however if the switchboard and/or inverter are locked up then you will need to be home to give them access.

To find out how your business can benefit from solar & how much solar can benefit you, contact us today or send us a copy of your latest power bill to We then can then organise a time that suits to come & discuss with you the best option and give you a detailed quote including the figures on a return investment.

solar maintenance

Solar systems must be maintained on a regular basis & we highly recommend that you undertake yearly or two yearly maintenance of your Solar PV system to continue to get the best out of it. 

While the core components of solar systems are designed to function well for several decades, other components such as switches, and cables will need replacement at different points in the lifespan of the system. Panels can also become covered in dust and bird droppings over time. People should also pay attention to the monitoring equipment that comes with their solar system and call a professional if they believe it is not delivering as much power as it should. Always engage an appropriately qualified tradesperson to undertake maintenance work on your solar PV system.

This is necessary to ensure that:

  • It is operating correctly, and you are getting the full benefit out of your system
  • The system performance is maintained
  • The panels are cleaned
  • The system is safe for everyone in the premises as well as for any electrical workers working on the distribution network

How long does the Maintenance & Clean take & do I need to be home?

Our experienced and specially trained solar technicians will do the maintenance in approximately 2 hours. This gives them the time to thoroughly check & test everything. The technicians will need to access your switchboard & inverter, if these are somewhere that they can access without you being at home then it is not necessary for you to be there, however if the switchboard &/or inverter are locked up then you will need to be home to give them access.

The following takes place during this service:

  • A thorough clean of your panels
  • A thorough clean of your inverter to ensure that the inverter stays at the correct working temperature
  • The isolators/circuit breakers are checked for water ingress, checked that they are operational and all terminations are secure
  • Electrical joints are checked for heat & cracking
  • Electrical cables are checked to make sure they are safe & secured
  • Inverter is tested to ensure it is operating at peak performance
  • Kw/h production tests of your system, to ensure it still meets expected energy outputs
  • We check for shading issues
  • Inspection of all safety warning labels

For the average 5kW system, intake per day is 21kWs. To check this you will need to change the screen on your inverter to the E-Today, this will show you the amount of kWs per day. The best time to check this is in the afternoon after a clear sunny day. We recommend you check it at 5:00pm, as it will show you an accurate reading for the whole day.

If it is reading a considerable amount under 21kWs on a clear sunny day then we will need to send someone out to check the system for you. Please keep in mind that weather does affect these readings.

Problems in the System?

There are many reasons for a problem with your solar system:

  • A string or wires in the system may be broken or not connected
  • Panels may be dirty or damaged – (We recommend a maintenance every once a year to keep your panels clean)
  • May be fault or error in the inverter itself
  • Pre 2014 systems includes swap out of isolators to bring system up to current standards.

We advise that you always turn your system off if someone needs to get on the roof and/or inside the roof cavity. This is to ensure that no one gets hurt if someone was to accidentally damage the system or wiring in some way.

switching off your PV system



Frequently Asked Questions

Installing a solar photovoltaic (PV) system at your home or business is a great way to slash your power bill and get back control of your electricity usage.

The best way of determining your solar system production is by checking the readings on the display of your inverter. You should monitor the readings over a 7 to 14 day period for best results. If you are concerned that these reads are lower than expected please send the filled out Solar Generation Log into our office for assessment.

If the voltage is too low (during sunset or sunrise) the inverter will shut down until the DC input voltage is sufficiently high enough to register again. Some inverters will indicate ‘voltage low’ with a flashing light prior to going into ‘sleep mode’.

During a ‘blackout’ or power cut, all grid connected solar inverters will automatically shut down. This is a legal requirement as a safety precaution, due to the possibility of utility repairs being conducted and the workers potentially touching live wires that are still receiving electrical currents from solar installations. Once the power is back on, you should always check that your inverter has started up normally.

From time to time a disturbance in the electricity grid, caused by a voltage spike, can cause your inverter to shut down or go into ‘fault mode’ in order to protect your property and the inverter. It is advised to refer to the inverter operating manual and also try restarting your system manually following the ‘shut down and start up procedure’. It is recommended that you then monitor your system, as generally it will correct itself. If your inverter continues to display an error message, please contact Goodhew and we will be happy to help resolve the issue.

Although the rain removes some dirt and dust, depending on the environment that you live, it is recommended that you clean your solar panels at least twice a year to enable optimum production. If you experience a lot of dust and debris or salt spray, you may wish to clean the panels more frequently. A soft cloth, soft brush or even a soft mop for heavily soiled panels can be used with very mild dish washing detergent if necessary. You should ensure you rinse the panels thoroughly and NEVER stand on them. Goodhew offers a full maintenance and panel cleaning service.

There are a number of factors to consider

  1. You should check how many kilowatt hours (kWh) you have used in the past compared with now, using previous and current bills. Your ‘average daily usage’ in kWh should be on the front of your electricity bill. If you have been using more power than normal or your retailer has increased their charges, you will pay more when your electricity bill arrives.
  2. The solar credits (as outlined on your electricity bill) indicate the money you have been paid for solar power in kWh that you have NOT used and effectively sent back to the electricity grid. Those figures are not what your solar system has produced in total for that billing cycle. The only way of determining your solar system production is by checking the readings on the display screen of your inverter.
  3. To use your solar system efficiently and see greater savings, you should not increase your energy consumption but change your energy consumption habits and try to use your electricity throughout the day when the solar power is indicating peak production (10am-3pm on clear sunny days).
  4. As recommended, you should monitor your system regularly by checking the solar inverter. The sooner you notice anything unusual or if there is a fault light or message on the display the sooner the issue can be addressed.