Lrichy OEM 520820 RV Furnace Ignition Circuit Board — Direct Suburban SF/NT Replacement

Overview

Meet the Lrichy 520820 ignition circuit board, engineered to replace Suburban OEM units across a broad range of RV furnaces. This module orchestrates spark ignition and gas valve control with a built-in safety lockout so the system can recover from ignition setbacks without manual intervention.

Real-time coordination of gas and electric operation helps maintain smooth startup sequences. Thermal feedback helps prevent ignition misfires and unintended cycling, contributing to consistent flame regulation and comfortable warmth on chilly evenings inside the RV.

Key capabilities

• Intelligent Control that coordinates ignition and valve actuation with a safety lockout after three failed attempts.
• Real-time synchronization of gas and electrical systems for reliable startup.
• Thermal feedback to minimize ignition errors and protect against malfunctions.
• Direct compatibility with a wide range of Suburban models for easy replacement.
• Durable construction designed to meet OE standards for lasting performance.

Why this matters

When a furnace is on the line during a camping trip, dependable ignition and steady heat matter. This board is designed to support consistent flame-regulated heating, helping your RV feel warm and welcoming even in demanding conditions.

• Stability in flame regulation helps maintain comfortable temperatures throughout the RV.
• Quality materials and engineering support long-term reliability and easier maintenance.

Compatibility highlights

The 520820 module is a direct replacement for Suburban SF, NT, SH lines including SF 20/25/30/35/42, SFV 20/25/30/35/42, NT 12/16/20/24/30/34, and SH-35/42-F. OE numbers 521099 520741 520871.

Note: Always verify model and OE number before purchase. This module is intended for replacement only and should be installed by a qualified technician.