Strong chemical or metallic smell around the unit when running.

Safety first: If you smell burning plastic or electrical odor, shut off power immediately.

• Check chemical placement: Ensure chlorine feeders or salt cells are installed downstream of the heater and that fumes are not venting directly into the unit.
• Inspect for corrosion: Look for rusted or corroded metal parts inside the cabinet. Address any chemical leaks or relocate chemical storage away from the heater.
• Electrical odor: If you detect a burning smell, open the control compartment (power off) and inspect for burned wires, melted insulation, or scorched components. Replace damaged parts and correct the cause.
• Professional help: If the source is unclear, have a technician inspect the unit to prevent fire or further damage.