521166 Suburban PC BOARD FOR A MODELS

OEM Control Board for Suburban A‑Series Water Heaters

The 521166 is the OEM Suburban control board designed specifically for A‑Model Suburban water heaters. This board manages ignition, flame sensing, safety lockouts, and burner sequencing for A‑series units.

The 521166 Suburban PC board is the primary electronic controller for Suburban A‑Model water heaters. It governs:

• Spark ignition

• Gas‑valve timing

• Flame‑sense monitoring

• Safety lockout logic

• Burner operation sequencing

A failing board can cause ignition failure, intermittent heating, or complete system shutdown. This OEM replacement restores proper operation and is plug‑compatible with the A‑Model wiring harness.

📐 Key Features

• OEM Suburban control board for A‑Model water heaters

• Manages ignition, flame sensing, and safety circuits

• Direct replacement for factory module

• Designed for high‑heat water‑heater compartments

• Stable, appliance‑grade PCB construction

• Not interchangeable with IW‑series or ST‑series boards