50F06-843 – CONTROL BOARD (UNIVERSAL, ST9120)

If your furnace blower won’t start or the fan timing is off, a universal fan timer board can replace the failed OEM board in most single-stage gas furnaces. This board replaces over 150 different OEM part numbers, including the Honeywell ST9120 series.

Specs: Universal electronic fan timer control board, single-stage furnace compatible, replaces 150+ OEM models

Replaces: 50F06-843, ST9120U1011

Fits: Single-stage gas furnaces from Carrier, Goodman, Rheem, Trane, Lennox, York, and most other brands.

Need help? See our Furnace Not Heating Guide.

In stock at Open To Public HVAC Parts in Dallas. We test parts at the counter before you buy. Call or text (214) 340-9421.

Cross-reference numbers

This part replaces the following OEM and aftermarket numbers:

• 50F06-843
• ST9141A1002

Not sure if your number matches? Call (214) 340-9421 or bring the old part in — bench-testing is free.