Boiler emits a burning smell or plastic odor during operation

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

Steps to check:

• Initial use: A slight smell on first use of a new Kospel boiler can be normal as protective coatings burn off. This should dissipate quickly.
• Inspect wiring: With power off, remove the cover and look for discolored or melted insulation, especially near the terminal block and heating elements.
• Tighten terminals: Tighten any loose electrical terminals to the specified torque.
• Check pump: Listen for unusual noises from the pump that may indicate motor overheating.

When to call a technician: Any persistent burning smell or visible damage to wiring or components requires immediate professional attention.