PV Gap

Albert Said:

Why doesn't my shower heater work? Is it the solar panels?

We Answered:

4000 watts is far more than is normally on a single circuit, like your outlets. That's one of the reasons the instructions say the device must be wired directly into the service panel (switchboard). It's like a stove in its requirements.

If you're in Costa Rica, get a solar water heater, and store the hot water in a tank. Return that shower heater, give it away, or sell it. It's extremely inefficient to use solar panels to store electrical energy, then try to heat water with that.