50A55-438 furnace control board replacement

The White-Rodgers 50A55-438 furnace control board's official cross-reference replacement is 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 board

ICM Controls ICM2812-KIT Uses adapter harness 6 from the kitSource: ICM Controls ICM2812-KIT Cross Reference (LIAF321)
Link coming soon

Board type: Integrated furnace control board

Before you order

Read the part number stamped or printed on the board itself, including any suffix letter. It must match 50A55-438 exactly.
Note the furnace model number from its rating plate; the installing technician will need it.

Questions about this board

What replaces the 50A55-438 furnace control board?

White-Rodgers 50A55-438 cross-references to ICM Controls ICM2812-KIT, according to the ICM Controls ICM2812-KIT Cross Reference (LIAF321).

Why does the ICM2812-KIT need adapter harnesses for 50A55-438?

The ICM2812-KIT is one universal board for 200+ OEM part numbers. ICM's sheet assigns each part number the harness(es) from the kit that adapt it to that furnace; for 50A55-438 that is adapter harness 6.

Can I replace the 50A55-438 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.

50A50-110 50A50-111 50A50-112 50A50-113 50A50-130 50A50-131 50A50-142 50A50-143 50A50-205 50A50-206 50A50-207 50A50-208

VERIFY THE SOURCE

Sources for this page

ICM Controls ICM2812-KIT Cross Reference (LIAF321) Part number and adapter harness table · retrieved 2026-11-04