Ruud Furnace Code 14
Safety fault
Flame present with the gas valve off. The control is seeing flame when there should be none. The blower and inducer run at maximum until the condition clears, then the furnace enters a one-hour lockout showing 14 alternating with 10. The manual calls this extremely critical.
Manual wording: “FLAME PRESENT WITH GAS VALVE OFF ... This fault indicates flame is present when it should not be. Flame is seen to be present when the gas valve is supposed to be off.”
Documented for: (-)97V, (-)96V, (-)801S/(-)801P
Likely causes, most common first
- Field mis-wiring of 24VAC to the gas valve main solenoid
- Faulty gas valve stuck in the OPEN position
- Faulty furnace control (signal improperly sensed when it should not be sensed at all)
What you can safely check yourself
- If you smell gas, leave the building and call your gas utility from outside.
- Otherwise, leave the furnace alone and call for service.
When to call a technician
Call a technician immediately. A gas valve stuck open is a gas-safety fault - do not attempt any troubleshooting, and never bypass or jumper anything on the gas valve circuit.
A Ruud furnace throwing this code repeatedly has a reason — clearing the code without fixing the cause just hides it.
Sources
- Installation Instructions for Upflow Condensing Modulating, Communicating Gas Furnaces - (-)97V Series (92-24161-126-04) (Rheem Manufacturing Company (Ruud brand), U97V series modulating condensing gas furnace (and U98V); TABLE 18 normal operation codes, TABLE 19 fault codes, pages 94-104) · checked 2026-08-25
- Installation Instructions for 4 Position Condensing Two-Stage, Communicating Gas Furnaces - (-)96V Series (92-24161-124-08) (Rheem Manufacturing Company (Ruud brand), U96V series and (-)(-)96MDV two-stage condensing gas furnaces; TABLE 19 normal operation codes, TABLE 20 fault codes, pages 111-120) · checked 2026-08-25
- Installation Instructions for Downflow Single Stage Gas Furnaces - (-)801S / (-)801P Downflow Series (92-24161-143-03) (Rheem Manufacturing Company (Ruud brand), U801S, U801P, (-)(-)80DSS, (-)(-)80DSP 80% single-stage gas furnaces; DIAGNOSTICS AND FAULT CODES, page 34) · checked 2026-08-25