Daikin furnace occasionally emits a faint gas smell near the unit during operation or shortly after shutdown.

Safety: If you smell gas strongly, shut off the gas supply at the manual valve, turn off power, evacuate the area, and call your gas supplier or emergency services. Do not use open flames or operate electrical switches.

Steps to check (visual only):

• Check manual valve: Ensure the manual gas shutoff valve handle is tight and not leaking (do not tighten packing nuts unless qualified).
• Look for soot: Soot around the burner compartment or vent connections can indicate combustion problems.

All gas leak detection and repair must be performed by a licensed gas technician using proper leak detection equipment. Do not attempt to tighten or replace gas components yourself.