Furnace produces a strong burning or electrical smell when operating.

Safety: If you smell burning plastic or see smoke, turn off power immediately and do not operate the furnace until inspected.

• Initial seasonal odor: A mild burning dust smell at first startup is common and should dissipate within an hour. Open windows to ventilate.
• Blower motor: If the smell is strong near the furnace, turn off power and inspect the blower motor for overheating, discoloration, or burnt wiring. Replace the Wolf blower motor if damaged.
• Electrical connections: Check the control board and junction box for loose or burnt wires. Tighten and replace damaged components.
• Duct inspection: Look into supply registers for foreign objects (plastic, toys) that could overheat.