We may earn a commission from links on this page. Learn more about affiliate links

Rheem 14: Flame present with gas valve off. Extremely critical; furnace will not operate

Ref. RHEEM-14 · From the Rheem furnace manual · Updated 2026-10-23

Status code14Rheem
What it means

Flame present with gas valve off. Extremely critical; furnace will not operate.

Call a profurnace
How it shows: Dual 7-segment display: 14

Find a local HVAC pro →

§1Likely causes

  • Field mis-wiring of 24 VAC to gas valve
  • Gas valve stuck open
  • Faulty furnace control

§2Safe DIY steps

  1. Techniciancorrect wiring, replace gas valve or replace control
Safety firstIf you smell gas, do not touch any electrical switch or use a phone in the building; leave immediately and call your gas supplier from outside. Turn off electrical power at the furnace switch or breaker before opening any panel, and never bypass or jumper a limit, rollout or pressure switch. Gas valve, burner, venting, wiring and control-board work should be done by a licensed HVAC technician.

§3When to call a pro

Call a licensed HVAC technician: immediately; this is a gas safety fault.

Find a local HVAC pro →

§4Other Rheem codes

10Rheem

One-hour lockout, caused by repeated failed ignition (11), water sensed (59), dead blower (61), internal fault (93), flame lost 5 times (13) or unexpected flame (14).

11Rheem

Failed ignition. After four failed attempts the control enters one-hour lockout (10).

12Rheem

Low flame sense: flame sense current is weak or marginal. Furnace keeps running.

13Rheem

Flame lost after established.

30Rheem

Open fuse, usually from a 24 VAC short to common or ground.

33Rheem

Over-temperature (rollout) switch open: flames rolled out of the heat exchanger into the burner compartment.