WERLAHO Upgraded Furnace Fan Circuit Board for Goodman PCBFM103S – 3A Fuse & Double-Layer Design

Overview

The WERLAHO upgraded furnace fan circuit board is designed to replace common blower delay control boards used in Goodman, Daikin, and Amana furnaces, including the PCBFM103S family. This replacement offers a practical alternative that can help you avoid costly service calls and traditional repairs by addressing a frequent failure point with a forward-looking upgrade.

Compatibility and replacement scope

This board covers a broad set of part numbers encountered in field service. If your unit lists any of these references, you may have a straightforward upgrade option: 1005-83-1724, SST-B, PCBFM103, 1005-171B, 1818W002116, Goodman PCBFM131S, B1370735S, and related blower delay boards.

• Replaces multiple Goodman/Daikin/Amana blower delay control boards
• Designed as a like-for-like substitute with a modernized design

Durability and design enhancements

Key upgrades include a higher resistance value, increased power handling, and a double-layer circuit board. This combination is intended to improve durability and maintain solid performance across operation cycles, contributing to longer service life and reduced wear on critical connections.

• Higher resistance for stable signal transmission
• Double-layer PCB for added durability

In the box and installation aids

Each kit includes a 3A furnace fuse and an insulated pillar to support safe installation and protect essential connections during setup.

Practical use scenarios

In systems with aging or intermittent blower timing, this upgrade may help preserve consistent fan control, reduce nuisance restarts, and lessen maintenance visits when the delay circuit is at fault. Real-world results depend on the broader furnace condition and wiring integrity.

How to choose and install

Before purchasing, verify compatibility with your model and listed references. If the part aligns, this replacement offers a direct-fit option that mirrors the original wiring layout, potentially simplifying the swap for a trained technician or a careful DIYer.

Why choose WERLAHO

WERLAHO focuses on practical, field-friendly replacements built for typical furnace environments. The board’s design emphasizes compatibility, ease of installation, and protective features, aligning with common homeowner and technician needs without making guarantees about performance in every system.

Performance considerations

Results vary with overall furnace condition, airflow, and wiring integrity. The upgrade can be a meaningful step toward restoring delayed fan control, but ongoing testing and monitoring are advised after installation.