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Caldera Spa Troubleshooting: What the Logo Lights Mean and How to Fix Common Problems Caldera spas have a built-in way to tell you something needs attention before you even lift the cover. On many models, the Caldera logo on the front of the cabinet doubles as a status display, glowing in colors that show whether the spa has power, whether the water is ready, and whether something has gone wrong. Learning to read it turns many service calls into quick fixes you can handle yourself. This guide ex … read more