50M56X‑843 Emerson Climate / White‑Rodgers Universal Ignition Furnace Control

Universal Integrated Furnace Control Kit — OEM White‑Rodgers / Emerson

The 50M56X‑843 is the upgraded universal integrated furnace control kit from Emerson / White‑Rodgers. It replaces a wide range of OEM ignition boards and provides modernized control of ignition, blower operation, flame sensing, and safety circuits in gas furnaces.

This kit is designed as a universal field‑replacement solution, making it ideal for service technicians working across multiple furnace brands and models.

Key Features

• Universal replacement for many OEM furnace ignition boards

• Controls ignition sequence, blower timing, flame sensing, and safety lockouts

• Integrated self‑diagnostics with LED fault codes

• Compatible with PSC blower motors

• Includes full installation hardware and wiring harnesses

• Emerson / White‑Rodgers reliability

Product Details

• Part Number: 50M56X‑843

• Type: Universal Integrated Furnace Control Kit

• OEM: Emerson Climate Technologies / White‑Rodgers

Function

This control board manages the entire ignition and heating sequence, including:

• Inducer pre‑purge

• Hot surface ignition

• Gas valve control

• Flame sensing

• Blower on/off timing

• Safety lockout logic

It replaces failed or outdated OEM boards and restores safe, reliable furnace operation.

Replaces: 50M56U-843

Cross‑Reference Block

Replaces: 50M56‑843, 50M56‑820, 50M56‑289, 50M56‑306, 50M56‑508, 50M56‑509, 50M56‑510, 50M56‑511, 50M56‑512, 50M56‑513, 50M56‑516, 50M56‑517, 50M56‑518, 50M56‑520, 50M56‑721, 50M56‑722, 50M56‑723, 50M56‑724, B18099‑13, B18099‑14, B18099‑26, B18099‑27, B18099‑28, B18099‑52, 031‑01263‑000, 031‑01263‑001, 031‑01263‑700, 1170065, 1170066, 1170067, 1170068, 62‑24140‑04, 62‑24140‑05, 62‑24140‑06, 624631, 6246310, 624631A, CNT03076, CNT03077, CNT03078.