Unit produces a strong chemical or burning smell during operation.

Safety first: If you smell burning plastic or see smoke, immediately turn off power at the breaker and do not restart until inspected.

• Initial inspection: After power is off and components have cooled, remove access panels and look for discolored, melted, or charred wiring and parts.
• Check contactor and terminals: Inspect the compressor contactor, terminal block, and wiring for signs of overheating. Tighten loose connections and replace damaged parts.
• Clean coils: If a chemical smell is present, rinse the coils to remove any spilled pool chemicals or contaminants.
• Do not ignore persistent smell: If the smell returns quickly after restart, shut down and call a qualified technician to locate and replace the overheating component.