Description
For Goodman and Amana variable-speed furnaces, the 50C51-707 is a direct OEM-style replacement board that keeps two-stage hot-surface ignition systems running the way the factory intended. It drops in for multiple Goodman control numbers and earlier White-Rodgers models, supports communicating and legacy 24V stats, and adds clean diagnostics and accessory outputs in one control.
Key Features & Benefits
Direct Goodman/Amana OEM Replacement
Replaces high-volume Goodman/Amana boards such as PCBKF101S, PCBKF102/102S, PCBKF103/103S, PCBKF104/104S, PCBKF105/105S and earlier White-Rodgers 50C51-289/290 models.
Two-Stage HSI for Variable-Speed Systems
Two-stage hot surface ignition control designed for 120V ignitors and variable-speed inducer and blower motors in Goodman variable-speed furnace applications.
Communicating or Legacy 24V Operation
Works either as part of a 4-wire communicating system or from standard 24-V thermostat inputs (1, 2, R, C, W1, W2, Y1, Y2, G, O, DHUM).
Integrated 7-Segment Diagnostics
On-board 7-segment diagnostic LED and status indicators provide clear fault codes for fast system checks.
120V Air Cleaner and Humidifier Outputs
Includes dedicated 120V outputs for an electronic air cleaner and a humidifier, each rated up to 1 A max.
Factory Safety Timings and Adjustable Fan Delays
Uses standard OEM safety timings with adjustable fan delay options to match original furnace operation.
Replaceable Automotive-Style Fuse
Low-voltage circuit is protected by an on-board automotive-style blade fuse for simple service if a short occurs.
Part of a Broad OEM Replacement Family
Belongs to the White-Rodgers integrated furnace control line designed as direct OEM replacements, with models in the family covering PSC, variable-speed, and ECMx motor applications.
