Napoleon PRESTIGE 665

Questions and Answers

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dhughesAug 18, 2025
Why is there low heat/low flame on my Napoleon PRESTIGE 665 Grill when the valve is on high?
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  Jennifer BergAug 18, 2025
  The low heat or flame could be due to several reasons. If you're using propane, you might not be following the correct lighting procedure. For natural gas, the supply line might be too small. In both cases, the grill might not be preheating properly. Ensure you follow the lighting procedure carefully, with all gas grill valves in the off position when you turn on the tank valve. Turn the tank on slowly to allow the pressure to equalize. Preheat the grill with both main burners on high for 10 to 15 minutes. The pipe must be sized according to the installation code.
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owhiteAug 20, 2025
Why does my Napoleon PRESTIGE 665 Grill have excessive flare-ups and uneven heat?
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  Nicole JacobsAug 20, 2025
  Excessive flare-ups and uneven heat can occur for a few reasons. The sear plates might be installed incorrectly, or the grill isn't preheating properly. Also, excessive grease and ash buildup on the sear plates and in the drip pan can cause this issue. Make sure sear plates are installed correctly. Preheat the grill with the main burners on high for 10 to 15 minutes. Clean the sear plates and drip pan regularly. Do not line the pan with aluminum foil.
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Lisa GrahamAug 23, 2025
What to do if my Napoleon PRESTIGE 665 burners burn with a yellow flame and smell of gas?
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  vfarleyAug 23, 2025
  If your burners are burning with a yellow flame and you smell gas, there might be a spider web or other debris in the burner. Thoroughly clean the burner by removing it.
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Dwayne ScottAug 26, 2025
What to do if the ignitor won't light my Napoleon Grill main burner, but a match will?
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  David SheltonAug 26, 2025
  If the main burner won't light with the igniter but lights with a match, the jet-fire outlet is likely dirty or clogged. Clean the jet-fire outlet with a soft bristle brush.
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Joshua RodriguezAug 28, 2025
What to do if the knob and switch lights on my Napoleon Grill blink eight times and then turn off?
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  susanhowardAug 28, 2025
  If the knob and switch lights blink eight times and then turn off, the batteries are likely low. Replace the batteries.
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Kirsten MorganAug 30, 2025
What to do if my Napoleon Grill infrared burner flashes back?
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  Denise NavarroAug 30, 2025
  If the infrared burner flashes back, it could be due to ceramic tiles overloaded with grease, clogged ports, overheating due to inadequate ventilation, cracked ceramic tile, or a leaking gasket. Turn the burner off and let it cool for at least two minutes. Relight it and burn on high for at least five minutes, or until the ceramic tiles are evenly glowing red. Make sure that no more than 75% of the grill surface is covered. Turn the burner off and let it cool for at least two minutes, then relight. Allow the burner to cool and inspect closely for cracks.
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ddillonSep 2, 2025
What to do if the burner output on my Napoleon Grill 'high' setting is too low?
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  melissa14Sep 2, 2025
  If the burner output on the 'high' setting is too low, with rumbling noise, it could be due to a lack of gas, a pinched supply hose, a dirty or clogged orifice, or spider webs in the venturi tube. Check the gas level in the propane cylinder. Reposition the supply hose if necessary. Clean the burner orifice and clean out the venturi tube.
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Jon ConwaySep 4, 2025
What to do if the rear and side burners on my Napoleon PRESTIGE 665 won't light with the igniter?
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  dbensonSep 4, 2025
  If the rear and side burners won't light with the igniter but will light with a match, the battery might be dead or installed incorrectly, or the electrode wire or switch terminal wires might be loose. Replace the battery with a heavy-duty premium battery. Check that the electrode wire is firmly pushed onto the terminal on the back of the igniter. Check that the lead wires from the module to the ignition switch are firmly pushed onto their respective terminals.
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moorekatherineSep 7, 2025
What to do if the pilot on my Napoleon Grill won't light?
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  Dale LeeSep 7, 2025
  If the pilot won't light, there could be a lack of gas, an obstruction in the pilot orifice, a loose electrode wire, a dirty pilot electrode, or the pilot might actually be lit. After turning the pilot knob to high, wait about 20-30 seconds for air to purge the gas line while pressing the igniter. Fill the propane cylinder. During initial setup or after refilling the tank, light one of the tube burners before lighting the pilot burner to help gas reach the valves more quickly. Clean the pilot orifice, replace the lead wire, and clean the pilot electrode.
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Joan RodriguezSep 9, 2025
What to do if the illumination and side/rear burner ignition on my Napoleon PRESTIGE 665 Grill do not work?
- B
  Brittney HamiltonSep 9, 2025
  If the illumination and side/rear burner ignition do not work, there might be an electrical issue. Check and replace the batteries in the battery box. Make sure the grill is connected between the battery box and the control panel connector.

Summary

Introduction and Safety Precautions

General Safety Warnings

Highlights critical dangers like gas leaks and high temperatures.

Warranty Information

Warranty Coverage Details

Specifies warranty periods for grill components.

Warranty Conditions and Limitations

Outlines warranty terms, exclusions, and claim procedures.

Safe Grill Operation

Safe Operating Practices Guide

Comprehensive guide for safe and correct grill usage.

Gas Handling and Disposal

Gas Cylinder and Hose Safety

Guidelines for safe handling, connection, and maintenance of gas components.

Technical Specifications

Technical Data Overview

Lists input values, gas usage, and certified gas/pressure info.

Gas System Integrity

Leak Testing Procedures

Instructions for annual leak tests on gas connections.

Ignition Procedures

Burner Lighting Guide

Step-by-step guide for lighting burners safely.

Cooking Techniques

Grill Cooking Methods and Burner Use

Explains direct, indirect cooking, and use of main and rear burners.

Specialized Burner Operation

Infrared Side Burner Use

Guidance on using and protecting the infrared side burner.

Understanding Infrared Heat

Grilling Charts

Infrared Grilling Chart

Cooking times and settings for various foods on infrared burners.

Cleaning and Maintenance

Cooking Surface Cleaning and Seasoning

Guide for cleaning and seasoning cooking grids and warming racks.

Grill Interior and Control Panel Cleaning

Instructions for cleaning the grill interior, drip pan, and control panel.

Exterior Care and Servicing

Outer Surface Cleaning and Servicing

How to clean exterior surfaces and perform annual servicing.

Infrared Burner Protection

Infrared Burner Care and Prevention

Steps to prevent cracking and ensure infrared burner longevity.

Troubleshooting

Problem Resolution Guide

Addresses common issues like low heat, ignition failure, and component problems.

Parts and Warranty Support

Ordering Replacement Parts

Information on ordering parts and warranty claims.

Parts List

Napoleon PRESTIGE 665 Specifications

General

Main Burners	5
Infrared Rear Burner	Yes
Infrared Side Burner	Yes
Rotisserie Kit	Yes
Material	Stainless Steel
Grill Grates	Stainless Steel WAVE™ Cooking Grids
Fuel Type	Natural Gas or Propane
Ignition System	JETFIRE™ Ignition System
Warranty	Limited Lifetime Warranty