Strong exhaust or burning smell near the Triangle Tube water heater, especially during operation.

Danger: Possible carbon monoxide hazard. If you smell exhaust indoors, shut off the unit, ventilate the area, and do not use the heater until inspected.

• 1. Turn off heater: Switch off power and close the gas valve.
• 2. Inspect vent connections: Check all vent joints from the heater to the termination. Look for gaps, cracks, or disconnected sections. Reseat and reseal with approved materials.
• 3. Check for backdrafting: Ensure the vent termination is not blocked and that there is adequate combustion air. Avoid running powerful exhaust fans that can depressurize the space.
• 4. Do not operate with compromised venting: Do not restart the heater until all vent issues are corrected.
• 5. Professional combustion check: Have a qualified technician perform a combustion analysis and verify proper gas input and air settings.