When we complete a solar PV health check our engineer completes an on site check of the system, the things we look out for are 

1. All connections are tight
2. Everything is working
3. Check of solar inverter
4. Clean the air filters of the solar inverter
5. Check for any potential issues - such as new shading problems that may have arisen since installation.
6. All health and safety signs are present. 
7. An inspection of the solar panels (if accessible)

Once our site inspection is complete we provide you with a brief report of our findings and (if any) recommendations that will improve your PV systems performance or safety. We also complete a brief efficiency report to give you an idea of how well your system has performed since the commissioning date. 

The health check is excellent value for money as we can spot problems which may be causing you to loose generation. Any increased generation is an increase in payments from your FIT. A health check will also give you peace of mind that your system is safe.