FCCUM Pit Boss Thermostat Controller — Compatible PB340/440/700/820, LCD Display & Smoke Mode Timing

FCCUM's replacement digital thermostat controller board restores temperature control and the LCD readout on compatible Pit Boss pellet grills so your smoker or grill runs precisely again.

When a Pit Boss grill loses its display, fails to maintain set temperatures, or shows erratic behavior, the controller board is often the root cause. This FCCUM controller board is designed as a direct-fit aftermarket replacement for a wide range of Pit Boss models, offering an LCD frequency-enhanced display, smoke-mode timing, and eight preset cooking temperature ranges. The board supports routine grilling and low-and-slow smoking modes so you can get back to consistent cooks without replacing the whole unit.

Will this board fit my Pit Boss model?

The FCCUM controller is built to be compatible with many Pit Boss pellet grills and smokers. It replaces the factory digital thermostat board used in multiple PB340, PB440, PB700, and PB820 variants. Before installation, compare connectors and mounting points to your existing board to ensure a straightforward swap.

• Compatible models: PB340, PB440D, PB700FB, PB700D, PB700S, PB700SC, PB820FB, PB820D, PB820FBC, PB820SC.
• Direct-feature match: LCD display, temperature control, smoke mode timing.
• Check: connector count and mounting hole spacing against the original board.

How does the LCD and temperature control improve cooking consistency?

The high-definition LCD frequency gives a clearer temperature readout so you can monitor setpoint and actual grill temperature more easily. The controller supports eight cooking temperature settings spanning from 200°F to 475°F and includes a P-setting to adjust smoke mode timing. Those features let you switch between rapid high-heat grilling and lower-temperature smoke cycles with predictable results.

• Eight temperature ranges: 200–475°F to cover smoking and searing.
• P-setting: customize smoke-mode timing for longer or shorter smoke phases.
• Clear LCD: easier temperature checks at a glance during cooks.

How simple is installation and what tools are required?

Installation is typically a quick, do-it-yourself task for anyone comfortable with basic appliance wiring. Power down and unplug the grill, remove the control housing, and swap the old board for the FCCUM replacement, matching connectors exactly. If you’re unsure, save photos of the original wiring before disconnecting or consult a technician to avoid incorrect connections.

• Tools needed: screwdriver set, needle-nose pliers, and a camera or phone for reference photos.
• Tip: power off and unplug the grill first to prevent damage or injury.
• If connectors differ, verify pin layout before powering on.

What should I expect after installing this replacement board?

Once correctly installed, the grill should return to stable temperature regulation and display accurate readings on the LCD. You’ll regain the ability to switch between high-heat and smoke mode, and the controller’s settings let you fine-tune the cook for different foods and techniques. If problems persist, recheck wiring and grounding or consult customer support for diagnostics.

• Outcome: restored temperature control and readable LCD display.
• Functionality: high mode for fast cooking; smoke mode for low-temperature smoking.
• Troubleshooting: verify wiring and connectors if the unit does not power up.

Who is this for: This FCCUM replacement digital thermostat controller board is intended for Pit Boss owners who need a reliable, cost-effective way to restore temperature control and the LCD display on affected PB340, PB440, PB700, and PB820 grills. It’s best for DIYers comfortable with basic disassembly and connector checks, backyard cooks who want predictable results across smoking and grilling modes, and anyone seeking an OEM-style feature set without replacing the entire grill controller module.