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You are here » Home » The Accidental Smallholder Forum » Smallholding » Renewables » Solar panel system pressure loss
We have 3 solar kit on our roof for hot water heating.The system has been working for nearly 2 years - we are very pleased with the results and our oil costs have dropped considerably. However - last year after some really hot weather - we noticed that the system pressure had dropped. This was about 9 months after the installation, we checked everything thoroughly for leaks and couldn't find any. We topped up the system it only took a small amount of fluid before the pressure was back up. Everything stayed fine until just this last week or so (1 year later) after another period of the temp in the panels being really high and we have lost pressure again The pressure in our expansion tank is about 2 bar.Should we be having to top up the fluid in the system every year Any suggestions? We have tried the technical 'helpline' at Worcester Bosch - but they insist that you have to take one of their courses before they will give you any support
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