System is fine yet client complained that there was not enough hot water.
System problem: Inspection revealed that the inlet three-way valve was turned so that cold feed water went directly to the electric tank.
Corrected this and now the client has use of the solar system
Client stated that the water heater had been replaced several years ago. The tank was replaced and the plumbing to the ICS unit was reconnected to the water heater. Perhaps the plumber turned the valve in the wrong position. It is rather confusing. When in the solar loop position, the handle is in a horizontal position. Most people would assume that this cuts off flow to the ICS unit. This is the reason some type of tag connected to the valve would help. The valve handle has arrows showing flow, but homeowners are not familiar with this.
Inspection revealed that the inlet three-way valve was turned so that cold feed water went directly to the electric tank.
Well-insulated tank area piping.
Escutcheons could have been used at ceiling penetrations.
Exterior insulation is well protected with foil type material.
Pressure relief valve handle is starting to rust.