System type: Pumped - photovoltaic control
Pressure relief valve at collector had leaked in the past after opening. Client had successfully closed it. Was not leaking during the inspection. Left the client a new pressure relief valve with instructions on how to replace. Is familiar with plumbing trade.
Air vent is blocked with sediment.
Roof sealing material in pitch pans is drying and starting to crack. This creates gaps for rain penetration.