Rheem fault codes

No call. Info, not a fault.

2 plates

Drive is enabled but stays at min Hz or 0 because analog / serial speed is missing.

1 plate

Example on most Carrier/Bryant packaged CES IGC stickers: pressure switch / draft did not make. Confirm the sticker in THIS heat section — revisions differ.

1 plate

Example on many CES rooftop IGC stickers: limit open. Confirm THIS sticker.

1 plate

Example: rollout / aux limit on many CES stickers; consecutive limit on others. Read THIS IGC.

1 plate

Example on many CES rooftop IGCs: ignition lockout after retries. Confirm THIS sticker.

1 plate

Example: internal control / valve circuit on current CES rooftop stickers. Power-cycle once; if 8-flash returns, valve ohms then IGC.

1 plate

Hardened ignition or draft retries.

8 plates

Trial without prove.

8 plates

11 failed ignition, 12 low flame sense, 13 flame lost. Same meanings as the two-stage Rheem IFCs.

2 plates

Weak µA.

8 plates

Dropped after prove.

8 plates

Flame with valve off.

8 plates

Overtemp / airflow.

10 plates

L1/N or ground.

8 plates

Flame containment. Manual reset.

8 plates

On VA / Endeavor cards that split low-pressure: the LPS did not close while the inducer is on high. This is not TA ‘45 = all low PS.’

8 plates

Modulating inducer / pressure did not prove at the commanded %. Not a simple two-switch tee like R96TA or the VA 45/46 split.

2 plates

LPS did not close on low inducer. This is the VA low-fire / low-inducer half of the split TA never printed.

3 plates

High-pressure / exhaust switch open.

8 plates

96% drain or water switch.

5 plates

VS motor / CFM fault.

8 plates

IFC self-fault.

7 plates

JADE LCD: ACT ERROR / ACT RANGE. Actuator did not follow command. Feedback pot off the shaft is the weekly.

1 plate

HERM and/or FAN section out of rating. Single-stage Comfort dies this way all summer.

4 plates

Wrong charge method is as common as wrong charge.

4 plates

JADE LCD: CO2 / SENS ERR. DCV sensor failed or the 0–10 V input is floating. Damper holds open; compressor never runs.

1 plate

Drive or bus. Wall control loses the outdoor.

1 plate

Will not pull, chatters, or is welded.

5 plates

Float switch or tripped condensate opened 24V.

1 plate

Stat, indoor, or data pair dropped. The communicating thermostat is the system.

2 plates

Start here when the hood is the complaint. Title 24 FDD classes: sensor, not-economizing, false-economizing, damper not modulating, excess OA.

1 plate

Drive has line voltage but will not run — the unit board never enabled it.

1 plate

Damper open past the commanded minimum with no economizer or DCV request.

1 plate

Damper open with OA above changeover. Space hot, high OA bills, or wet coil.

1 plate

Controller did not see blower current / pressure.

1 plate

Flame present then dropped, or µA too low to prove.

1 plate

JADE LCD: FREEZING. Mixed air below the low-limit. Damper drives shut; mechanical cool may lock.

1 plate

Keypad example: GF. Drive sees current to ground on the motor leads.

1 plate

Status — a heat call is running.

2 plates

Outdoor HPS opened — coil circuit is dead. Not an inverter pressure fault and not an L-code.

5 plates

Still real on an inverter.

1 plate

Trial for ignition failed after the IGC retries.

1 plate

L5/L4-class faults on the drive.

1 plate

No 24V at the ignition control, or the module is dead.

1 plate

Heat-exchanger or supply limit opened.

1 plate

Drive is running too slow to close the prove switch, so the unit board reports fan fail. Reliatel example: Fan Fail with the drive still at min Hz.

1 plate

Suction dropped out the low-pressure switch.

1 plate

JADE two-line LCD: MA / SENS ERR. Mixed-air sensor failed. This one alarms immediately on power-up — others wait the 60-minute setup window.

1 plate

Damper is two-position (0 or 100) instead of tracking 2–10 V. Title 24 FDD class.

1 plate

OA is in the free-cooling window and the damper stayed shut. Title 24 FDD class.

1 plate

JADE LCD: OA / SENS ERR (or OA SYLK ERR). Outside-air thermistor failed or lost SYLK. Board thinks the roof is 20 °F or 120 °F.

1 plate

Keypad example: oC (Yaskawa) or OC. Output current trip. Locked rotor, dirty filters, or FLA set too low.

1 plate

Fan not turning. Compressor may still run and then HPS.

4 plates

Keypad example: oH. Drive thermal trip.

1 plate

Keypad example: ov (Yaskawa) or OU. DC bus high. Usually regen on decel, not a new drive.

1 plate

Keypad example: PF. Missing or imbalanced incoming phase.

1 plate

Three-phase monitor opened.

1 plate

Inducer ran (or should have) and the draft switch did not make.

1 plate

JADE LCD: RA / SENS ERR. Return-air thermistor failed. Differential / enthalpy changeover compares OA to RA.

1 plate

Flame left the burner box.

1 plate

Supply or return smoke detector, or a firestat, has the unit locked out.

1 plate

Flame with no trial.

1 plate

Keypad example: Uv (Yaskawa) or LU. DC bus dropped. Incoming power or a missing phase.

1 plate

The indoor fan is a drive, not a contactor + cap. Type the keypad string: oC, Uv, ov, GF, oH, PF.

1 plate