Heater emits a strong burning or plastic smell when running.

Safety first: Turn off power and gas immediately if you smell burning. Allow the unit to cool before inspection.

• Inspect interior: Remove the front panel and look for melted plastic, discolored wiring, or debris (leaves, plastic bags) on or near the Nirvana heat exchanger and burners.
• Check blower: Inspect the Nirvana combustion blower for signs of overheating (burnt smell, discoloration). Ensure the blower wheel spins freely.
• Airflow: Verify that all air intake openings and louvers are clear of obstructions.
• Replace damaged parts: Any melted wiring harnesses, connectors, or plastic components must be replaced. Do not operate the heater with damaged insulation.
• Professional evaluation: If the source of the smell is not obvious, have a technician perform a detailed electrical and combustion inspection.