Do I have to go inside to dismantle the solar water heater?

Yes. Solar water heater disassembly method: If it needs to be completely disassembled, first drain the water from the water tank, remove the upper and lower water pipes and external fittings, then remove the pipes and media. The whole process is a little more difficult to remove the pipe. First, push the hose back into the water tank a little, twist it slowly, remove the bottom of the hose from the hose holder, and then remove it. Pipes that have been in use for a long time are more difficult to remove. If you encounter a pipe that is difficult to remove, first lower the beam that holds the pipe support underneath. Use cardboard to pad the bottom of the pipe, then remove it one by one. This is basically the case, of course there is a better way, this is the secret of after-sales service.