The White‑Rodgers 50M56X‑843 is a universal single‑stage hot‑surface‑ignition (HSI) integrated furnace control designed to replace more than 550 OEM furnace control boards across a wide range of gas furnaces. Engineered for fast installation and broad compatibility, it supports PSC and constant‑torque (ECMx) blower motors, includes a 120‑volt nitride ignitor, and provides full burner and blower sequencing with advanced safety monitoring. The control features NFC configuration through the White‑Rodgers Connect mobile app, allowing technicians to quickly program blower timings, ignition parameters, and system profiles. A built‑in diagnostic LED provides fault codes for rapid troubleshooting, while universal wiring harnesses and mounting options streamline retrofit applications. Ideal for service contractors and distributors seeking a single, versatile replacement solution for legacy and modern furnace platforms.
General
- Product Type: Universal Single‑Stage HSI Integrated Furnace Control
- Ignition Type: Hot Surface Ignition (HSI)
- Stages: Single Stage
- Motor Compatibility: PSC and ECMx (constant torque)
- Configuration Method: NFC via White‑Rodgers Connect App
- Diagnostic Display: Multi‑color LED fault code indicator
Electrical
- Input Voltage: 120 VAC
- Control Voltage: 24 VAC
- Ignitor Output: 120 VAC (nitride ignitor included)
- Inducer Output: 120 VAC
- Blower Heat Output: 120 VAC
- Blower Cool Output: 120 VAC
- Gas Valve Output: 24 VAC
Environmental
- Operating Temperature: −40°F to 175°F (−40°C to 79°C)
- Humidity: 5–95% RH (non‑condensing)
Safety & Protection
- Flame sensing with continuous monitoring
- Pressure switch input
- Limit switch input
- Lockout with auto‑reset
- Fault code memory
Included in Kit
- 50M56X‑843 control board
- 120V nitride ignitor
- Universal wiring harnesses
- Mounting hardware
- Installation instructions
Replaces Common OEM Boards
- Goodman / Amana: B18099‑xx series, PCBBF series
- Trane / American Standard: CNT‑xxxx series
- Lennox: 83M00, 56L84, 97L48
- Carrier / Bryant / Payne: HK42FZ0xx series
- ICP / Heil / Tempstar: 1170065xx, 1170066xx
- Rheem / Ruud: 62‑24084‑xx, 62‑24140‑xx
- York / Luxaire / Coleman: 031‑01234‑000, S1‑03101234000
Compact Cross‑Reference by Brand
White‑Rodgers / Emerson
50M56‑843
50M56‑801
50M56‑820
50M56‑289
50M56‑306
50M56‑310
50M56‑508
50M56‑509
50M56‑510
50M56‑511
50M56‑512
50M56‑513
50M56‑516
50M56‑517
50M56‑518
50M56‑520
50M56‑525
50M56‑526
50M56‑527
50M56‑528
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Goodman / Amana
B18099‑01
B18099‑02
B18099‑03
B18099‑04
B18099‑05
B18099‑06
B18099‑13
B18099‑17
B18099‑23
PCBBF112
PCBBF132
PCBBF140 / PCBBF140S
PCBBF141 / PCBBF141S
---
Carrier / Bryant / Payne
HK42FZ004
HK42FZ007
HK42FZ008
HK42FZ009
HK42FZ011
HK42FZ012
HK42FZ013
HK42FZ016
HK42FZ034
HK42FZ036
HK42FZ038
HK42FZ050
HK42FZ051
HK42FZ052
HK42FZ055
HK42FZ059
---
ICP / Heil / Tempstar / Comfortmaker
1170065‑00 / ‑01 / ‑02
1170066‑00 / ‑01 / ‑02
1170067‑00 / ‑01 / ‑02
---
Lennox / Armstrong / Ducane
83M00
56L84
97L48
68K98
87M95
87M9601 / 87M9601R
---
Rheem / Ruud / WeatherKing
62‑24084‑01 / ‑02 / ‑04 / ‑82
62‑24140‑01 / ‑02 / ‑04 / ‑05
---
York / Luxaire / Coleman
031‑01234‑000
S1‑03101234000
S1‑03101234001
S1‑03101234002
S1‑03101234003
---
Trane / American Standard
CNT03076
CNT03797
CNT04397
CNT05001
CNT05002
CNT05003
CNT05100
---
Nordyne / Miller / Intertherm
624631
6246310
624631A
624631B
903106
9031060
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Other OEMs
1012‑925 (Armstrong)
1012‑933 (Armstrong)
1088‑83 / ‑00 / ‑01 (Keeprite)
50A55‑843 (WR universal predecessor)
50A55‑289 (WR universal predecessor)
