temperature is way off, like 100 degrees lower than what i set. it just won’t get hot enough.

Diagnosis

The temperature deficit in the Char-Griller Gravity Fed 980 is typically caused by a failure in the "draft cycle," where the oxygen supply cannot keep pace with the fuel consumption. Because this grill relies on a gravity-fed hopper, the charcoal must descend into the firepot at a consistent rate. When you see a 100-degree drop, it usually means the combustion zone is starved of oxygen or the fuel is "bridging"—where large pieces of lump charcoal wedge against the walls of the hopper, creating an air pocket that prevents new fuel from dropping into the heat zone. Additionally, this specific model is highly sensitive to ash accumulation. If the ash buildup in the firepot reaches a height of more than one inch, it creates a physical barrier that restricts the airflow from the fan. This results in a "smothering" effect where the charcoal glows but cannot reach the high-intensity combustion temperatures required to hit your set point. You can confirm this by checking the exhaust vent; if you see thick, white smoke instead of clear heat haze, your fire is oxygen-starved.

How to Fix It

To restore full heating capacity and eliminate the temperature gap, follow these precise steps:

1. Clear the Ash Reservoir: Open the ash cleanout door at the bottom of the firebox. Use a shop vac or a metal scoop to remove every bit of ash from the bottom tray. Ensure the ash doesn't block the intake area where the fan pushes air into the pot.
2. Break the Bridge: With the grill off, take a heavy-duty grill brush or a metal rod and gently poke down through the top of the hopper. If you feel resistance, you have a "bridge." Break this up to ensure the charcoal is flowing freely toward the firepot.
3. Optimize Fuel Grade: Avoid using oversized "jumbo" lump charcoal. If you are using 100% large lump, mix it with 30% high-quality briquettes. The smaller, uniform size of the briquettes acts as a lubricant for the larger pieces, preventing bridges and ensuring a steady gravity feed.
4. Seal the Air Leaks: Check the ash door latch. If the door is slightly ajar or the gasket is worn, air will take the path of least resistance through the door rather than being pushed by the fan through the coals. Ensure the door is slammed shut and locked.
5. Calibrate the Vent: Set your top exhaust vent to the fully open position. If the exhaust is restricted, the fan cannot push fresh oxygen through the fuel bed, regardless of the fan speed.

If That Didn't Work

• Test the Fan Output: Power on the grill and place your hand directly against the fan intake. You should feel a strong, consistent vibration and a significant push of air. If the fan sounds "labored" or high-pitched, the motor may be failing or the bearings are clogged with ash. Replace the fan assembly if the airflow feels weak compared to a new unit.
• Check the Thermocouple/Probe: The temperature sensor may be coated in carbon buildup (creosote), which insulates the probe and gives a false reading to the controller. Use a fine-grit sandpaper or a scotch-brite pad to gently clean the metal tip of the temperature probe to ensure it is reading the actual air temperature.
• Inspect the Firepot Grate: Remove the charcoal grate and check for warped metal or heavy rust scale. If the grate has sagged, it can block the airflow from the fan to the charcoal, creating a "dead zone" in the center of the fire.
• Verify Power Supply: If you are using an extension cord, ensure it is a heavy-duty 12-gauge cord. Low voltage can cause the fan to spin slower than the controller intends, resulting in lower-than-expected temperatures.

Heads Up

• Pre-Heat Cycle: Always allow the grill to pre-heat for at least 30 minutes before setting your final temperature. Gravity grills take longer to stabilize than traditional offsets.
• Hopper Management: Never fill the hopper to the absolute brim with small-grain charcoal, as this can actually compress the fuel and cause a bridge. Leave about 2 inches of headspace.
• Ash Maintenance: Empty the ash tray every 2-3 cooks. Allowing ash to build up over several sessions is the number one cause of "temperature drop" complaints on the 980 model.
• Fuel Quality: Avoid using "cheap" charcoal with high amounts of fillers/binders, as these produce more ash, which clogs the airflow faster than premium hardwood lump.