Napoleon PRO665-3 User Manual (English)

Questions and Answers:

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Paul RojasAug 18, 2025
Why is there low heat or low flame on my Napoleon PRO665-3 Grill when the valve is on high?
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  Jennifer RiceAug 19, 2025
  The low heat or low flame on your Napoleon Grill might be due to several reasons. If you are using propane, ensure you are following the correct lighting procedure, with all gas grill valves in the off position when you turn on the tank valve, and turn the tank on slowly. If you are using natural gas, the supply line might be undersized. For both types of gas, improper preheating could be the cause. Preheat the grill with both main burners on high for 10 to 15 minutes. Also, make sure the pipe is sized according to the installation code.
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Misty MartinezAug 21, 2025
What to do if my Napoleon Grill has excessive flare-ups or uneven heat?
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  Caitlin HuntAug 21, 2025
  Excessive flare-ups or uneven heat in your Napoleon Grill can be caused by sear plates installed incorrectly, improper preheating, or excessive grease and ash build-up on the sear plates and in the drip pan. Ensure the sear plates are installed according to the assembly instructions. Preheat the grill with the main burners on high for 10 to 15 minutes. Clean the sear plates and drip pan regularly, and do not line the pan with aluminum foil. Refer to the cleaning instructions for proper cleaning procedures.
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manuelarnoldAug 23, 2025
Why do the burners on my Napoleon PRO665-3 Grill burn with a yellow flame and smell of gas?
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  Chad ThompsonAug 23, 2025
  A yellow flame accompanied by the smell of gas in your Napoleon Grill burners indicates a possible spider web or other debris in the burner. Thoroughly clean the burner by removing it, following the general maintenance instructions.
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Virginia BurnettAug 26, 2025
What to do if my Napoleon Grill infrared burner flashes back?
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  jamesaliAug 26, 2025
  If the infrared burner on your Napoleon Grill flashes back, it could be due to ceramic tiles overloaded with grease drippings and build-up, clogged ports, overheating due to inadequate ventilation, cracked ceramic tile, or a leaking gasket. Turn the burner off and allow it to cool for at least two minutes. Relight the burner and burn on high for at least five minutes until the ceramic tiles are evenly glowing red. Ensure that no more than 75% of the grill surface is covered by objects or accessories. Allow the burner to cool and inspect very closely for cracks. If any cracks are found, contact your authorized Napoleon dealer to order a replacement burner assembly.
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smallkeithAug 28, 2025
Why is my Napoleon Grill regulator humming?
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  michaelsnowAug 28, 2025
  A humming regulator on your Napoleon Grill is a normal occurrence on hot days. This is not a defect and is caused by internal vibrations in the regulator, which does not affect the performance or safety of the grill. Humming regulators will not be replaced.
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Melissa JonesAug 30, 2025
Why is the burner output on my Napoleon PRO665-3 Grill too low on the high setting?
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  Angel LoveAug 30, 2025
  If the burner output on your Napoleon Grill is too low on the high setting, accompanied by a rumbling noise and fluted ring blue flame at the burner surface, it could be due to a lack of gas, a pinched supply hose, a dirty or clogged orifice, or spider webs or other matter in the venturi tube. Check the gas level in the propane cylinder. Reposition the supply hose as necessary. Clean the burner orifice and clean out the venturi tube.
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foxdaltonSep 1, 2025
Why does "paint" appear to be peeling inside the lid of my Napoleon PRO665-3?
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  Jessica CardenasSep 1, 2025
  The "paint" appearing to peel inside the lid or hood of your Napoleon Grill is not a defect. The finish on the lid and hood is porcelain and will not peel. The peeling is caused by hardened grease, which dries into paint-like shards that flake off. Regular cleaning will prevent this.
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matthewmillerSep 4, 2025
Why won't the burners cross light each other on my Napoleon PRO665-3?
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  James StaffordSep 4, 2025
  If the burners on your Napoleon Grill will not cross light each other, it may be due to dirty or corroded cross light brackets. Clean or replace them as required.
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Robert StoneSep 6, 2025
Why is the heat low on my Napoleon PRO665-3 when the valve is on high?
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  phelpselizabethSep 6, 2025
  Low heat or flame on your Napoleon Grill, even when the valve is turned to high, can be due to a few reasons. If you're using propane, ensure you're following the lighting procedure carefully, with all gas grill valves off when you turn on the tank valve, and turn the tank on slowly to equalize pressure. If you're using natural gas, the supply line might be undersized – it needs to be sized according to the installation code. Also, make sure you preheat the grill with both main burners on high for 10 to 15 minutes.
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kimbrittanySep 8, 2025
Why won't my Napoleon PRO665-3 Grill rear and side burners light with the igniter?
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  Jasmine RobinsonSep 8, 2025
  If the rear and side burners on your Napoleon Grill won't light with the igniter but will light with a match, the issue could be a dead or incorrectly installed battery. Replace it with a heavy-duty premium battery. Also, check that the electrode wire is firmly pushed onto the terminal on the back of the igniter, and that the lead wires from the module to the ignition switch (if equipped) are firmly pushed onto their respective terminals.

Napoleon PRO665-3 Specifications

General

Type	Gas Grill
Cooking Area	1, 140 sq. in.
Material	Stainless Steel
Infrared Rear Burner BTU	18, 000
Primary Burner	Stainless Steel Tube Burners
Infrared Side Burner BTU	14, 000
Fuel Type	Propane or Natural Gas
Ignition	JETFIRE Ignition System