PCBBF123 furnace control board replacement

The Goodman PCBBF123 furnace control board's official cross-reference replacements are ICM Controls ICM2811, White-Rodgers 50A55-743, and ICM Controls ICM2812-KIT.

Furnace control boards switch 120/240V line voltage and the gas valve. This page is for identifying the correct replacement part only — it is not a wiring or installation guide. Improper installation can cause fire, electrical shock, or gas hazards; have a licensed HVAC technician do the actual replacement.

Replacement boards

ICM Controls ICM2811 Source: ICM Controls Cross Reference Guide (LIAF309-2)
Link coming soon
White-Rodgers 50A55-743 Source: White-Rodgers / Copeland Furnace Controls Reference Card (R-4952, 3/24)
Link coming soon
ICM Controls ICM2812-KIT Uses adapter harnesses 5 & 6 from the kitSource: ICM Controls ICM2812-KIT Cross Reference (LIAF321)
Link coming soon

Board type: Integrated furnace control board

Configuration of White-Rodgers 50A55-743: Single-stage, PSC (per R-4952)

Before you order

Read the part number stamped or printed on the board itself, including any suffix letter. It must match PCBBF123 exactly.
Note the furnace model number from its rating plate; the installing technician will need it.

Questions about this board

What replaces the PCBBF123 furnace control board?

Goodman PCBBF123 cross-references to ICM Controls ICM2811, White-Rodgers 50A55-743, and ICM Controls ICM2812-KIT, according to the ICM Controls Cross Reference Guide (LIAF309-2), White-Rodgers / Copeland Furnace Controls Reference Card (R-4952, 3/24), and ICM Controls ICM2812-KIT Cross Reference (LIAF321).

Which PCBBF123 replacement should I buy?

Each listed board is an official cross for PCBBF123 in its manufacturer's own cross-reference. The ICM2812-KIT is a universal board that ICM packs with adapter harnesses; ICM's sheet names the ones this part number uses. Ask the technician who will install it which one suits your furnace before ordering.

Can I replace the PCBBF123 board myself?

FitXref only identifies the part. A furnace control board switches line voltage and the gas valve, so a licensed HVAC technician should install it and check the furnace afterwards.

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VERIFY THE SOURCE

Sources for this page

ICM Controls Cross Reference Guide (LIAF309-2) Furnace Control Boards section · retrieved 2026-07-19 White-Rodgers / Copeland Furnace Controls Reference Card (R-4952, 3/24) ©2024 Copeland LP · retrieved 2026-07-19 ICM Controls ICM2812-KIT Cross Reference (LIAF321) Part number and adapter harness table · retrieved 2026-11-04