StleCYQn Control Board AC03P9 Replacement Kit for Pit Boss 400–1100 Models — LCD Display & RTD Probe

If your Pit Boss grill has lost temperature stability, displays errors, or fails to ignite, this AC03P9 replacement controller kit gives you the core electronics and sensors to get back to steady cooking. The bundle includes the digital W/LCD control board, a meat probe, an RTD temperature sensor, a high‑temperature igniter hot rod with stainless sleeve, and a protective fuse. It’s designed to match the functionality of OEM boards while adding improved short‑circuit protection and consistent temperature holding.

How will this kit restore temperature control on my Pit Boss grill?

The replacement controller supports 10 cooking temperature settings from 180°F to 500°F and lets you fine‑tune in 25°F or 50°F steps. It also retains a dedicated smoke mode with eight pellet feed profiles (P0–P7) for slow smoking. Together, the controller and RTD grill sensor deliver faster, more accurate feedback so the controller can maintain steadier heat.

• 10 preset cooking ranges: 180°F–500°F with 25/50°F adjustments
• Smoke mode with 8 pellet feed options (P0–P7)
• RTD sensor provides quicker, more precise grill temp readings
• LCD/W digital readout for clear status and settings

What safety or durability improvements does this replacement offer?

This upgraded board adds protections against short circuits that can burn out controllers or trip GFCIs. The kit includes a replaceable fuse and the igniter is housed in a stainless sleeve to resist wear, so the system is better protected in common fault scenarios. These improvements aim to extend service life and lower the chance of repeated failures.

• Built‑in fuse to avoid controller damage during short circuits
• Igniter with stainless sleeve for longer life and safer operation
• Design tuned to reduce false GFCI trips from ignition rod issues

Which parts are included and how do they function together?

The kit contains the AC03P9 digital control board, a food‑grade stainless steel meat probe, an RTD temperature probe for the grill chamber, a 21" igniter hot rod with 200W/120V rating, and a fuse. The meat probe monitors internal food temperature while the RTD monitors grill temperature; the board uses both inputs to regulate pellet feed and maintain selected cook settings.

• Digital W/LCD control board (AC03P9 / PB1100PS1‑A003)
• Food‑grade stainless steel meat probe for internal food temps
• RTD grill temperature probe for accurate chamber feedback
• 21" stainless‑sleeved igniter hot rod (200W/120V) and fuse included

Will this fit my Pit Boss model and how easy is installation?

The kit is compatible with many Pit Boss pellet grill controllers including PB440D2, PB550G, PB700FB1, PB700NC1, PB820, PB850G, Pro1100, and PB1150G. It does not fit Pit Boss vertical pellet smokers, refrigerator grills, or other brands. Installation requires basic tools, following wiring and sensor placements similar to OEM replacements; if you’re comfortable replacing a control board and probes, this is a direct swap.

• Compatible with listed Pit Boss models (check your model number first)
• Not compatible with Pit Boss vertical smokers or non‑Pit Boss grills
• Typical install: remove old board, swap connectors, mount new probes, verify fuse

Who this kit is for: Grill owners who need a full electronics refresh—those experiencing unstable temperatures, ignition failures, or burned controllers—will benefit most. It’s aimed at Pit Boss owners comfortable doing a straightforward parts swap who want improved short‑circuit protection, accurate temperature sensing, and a longer‑lasting igniter. If you prefer factory service, consult an authorized technician; otherwise this kit offers a cost‑effective way to restore performance and extend the life of compatible Pit Boss pellet grills.