Bryant Furnace Code 25.1
Hard lockoutShown as: 2 short flashes, 5 long flashes
No program information in the control's microprocessor - the furnace will not heat.
Manual wording: “25.1 NO PROGRAM info in micro, no heating operation.”
Documented for: 926TC, 912SE
Likely causes, most common first
- Control board was never programmed, or the program was lost
When to call a technician
The control has to be reprogrammed with the correct program number from the rating plate using the Bryant service app or a super plug. That is dealer-only work.
A Bryant furnace throwing this code repeatedly has a reason — clearing the code without fixing the cause just hides it.
Sources
- Installation, Start-up, Operating and Service and Maintenance Instructions - 926TC (Bryant Heating & Cooling Systems, 926TC Preferred Series two-stage, variable-speed ECM multipoise condensing gas furnace) · checked 2026-08-25
- Installation, Start-up, Operating and Service and Maintenance Instructions - 912SE (Bryant Heating & Cooling Systems, 912SE Legacy Line 92% single-stage condensing gas furnace) · checked 2026-08-25