# HVACFaults

> Furnace fault-code reference. Every code is verified against the manufacturer service manual,
> cited to document and page, and bound to its exact model series (code maps differ between
> generations of the same brand). Codes that fail official verification are not published.

## Brand indexes
- [Goodman furnace error codes](https://hvacfaults.com/goodman/)
- [Amana furnace error codes](https://hvacfaults.com/amana/)
- [Carrier furnace error codes](https://hvacfaults.com/carrier/)
- [Bryant furnace error codes](https://hvacfaults.com/bryant/)
- [Payne furnace error codes](https://hvacfaults.com/payne/)

## Code pages
- [Goodman: No LED Signal](https://hvacfaults.com/goodman/led-off/): Why is the diagnostic light off on my Goodman furnace?
- [Goodman: Ignition Lockout — Flame Not Established After 3 Tries](https://hvacfaults.com/goodman/1-flash/): What does 1 flash mean on a Goodman furnace?
- [Goodman: Pressure Switch Stuck Closed](https://hvacfaults.com/goodman/2-flashes/): What does 2 flashes mean on a Goodman furnace?
- [Goodman: Pressure Switch Stuck Open](https://hvacfaults.com/goodman/3-flashes/): What does 3 flashes mean on a Goodman furnace?
- [Goodman: Open Primary Limit Switch](https://hvacfaults.com/goodman/4-flashes/): What does 4 flashes mean on a Goodman furnace?
- [Goodman: Flame Sensed With No Call for Heat](https://hvacfaults.com/goodman/5-flashes/): What does 5 flashes mean on a Goodman furnace?
- [Goodman: Open Rollout Limit Switch](https://hvacfaults.com/goodman/6-flashes/): What does 6 flashes mean on a Goodman furnace?
- [Goodman: Low Flame Sense Signal](https://hvacfaults.com/goodman/7-flashes/): What does 7 flashes mean on a Goodman furnace?
- [Goodman: Igniter Circuit Fault or Poor Ground](https://hvacfaults.com/goodman/8-flashes/): What does 8 flashes mean on a Goodman furnace?
- [Goodman: Reversed 115V Polarity or Poor Ground](https://hvacfaults.com/goodman/continuous-flash/): Why is the light on my Goodman furnace flashing continuously?
- [Goodman: Ignition Lockout (E0)](https://hvacfaults.com/goodman/e0/): What does E0 mean on a Goodman furnace display?
- [Goodman: Low-Stage Pressure Switch Stuck Closed (E1)](https://hvacfaults.com/goodman/e1/): What does E1 mean on a Goodman furnace?
- [Goodman: Low-Stage Pressure Switch Stuck Open (E2)](https://hvacfaults.com/goodman/e2/): What does E2 mean on a Goodman furnace?
- [Goodman: Open Primary, Auxiliary, or Rollout Limit (E3)](https://hvacfaults.com/goodman/e3/): What does E3 mean on a Goodman furnace?
- [Goodman: Flame Sensed With No Call for Heat (E4)](https://hvacfaults.com/goodman/e4/): What does E4 mean on a Goodman furnace?
- [Goodman: Open Fuse (E5)](https://hvacfaults.com/goodman/e5/): What does E5 mean on a Goodman furnace?
- [Goodman: Low Flame Sense Signal (E6)](https://hvacfaults.com/goodman/e6/): What does E6 mean on a Goodman furnace?
- [Goodman: Igniter Fault or No Ground (E7)](https://hvacfaults.com/goodman/e7/): What does E7 mean on a Goodman furnace?
- [Goodman: High-Stage Pressure Switch Stuck Closed (E8)](https://hvacfaults.com/goodman/e8/): What does E8 mean on a Goodman furnace?
- [Goodman: High-Stage Pressure Switch Stuck Open (E9)](https://hvacfaults.com/goodman/e9/): What does E9 mean on a Goodman furnace?
- [Goodman: Reversed Line Polarity (EA)](https://hvacfaults.com/goodman/ea/): What does EA mean on a Goodman furnace?
- [Goodman: No Shared Data (d0)](https://hvacfaults.com/goodman/d0/): What does d0 mean on a Goodman furnace?
- [Goodman: Invalid Memory Card Data (d4)](https://hvacfaults.com/goodman/d4/): What does d4 mean on a Goodman furnace?
- [Goodman: ECM Blower Motor Not Running (b0)](https://hvacfaults.com/goodman/b0/): What does b0 mean on a Goodman furnace?
- [Goodman: ECM Motor Communications Lost (b1)](https://hvacfaults.com/goodman/b1/): What does b1 mean on a Goodman furnace?
- [Goodman: Motor Horsepower Mismatch (b2)](https://hvacfaults.com/goodman/b2/): What does b2 mean on a Goodman furnace?
- [Goodman: ECM Motor in a Limiting Condition (b3)](https://hvacfaults.com/goodman/b3/): What does b3 mean on a Goodman furnace?
- [Goodman: Motor Trips (b4)](https://hvacfaults.com/goodman/b4/): What does b4 mean on a Goodman furnace?
- [Goodman: Display Reads ON — Normal](https://hvacfaults.com/goodman/display-on/): What does ON mean on a Goodman furnace display?
- [Goodman: Lockout — Excessive Retries or Recycles (E0)](https://hvacfaults.com/goodman/gmvm97-e0/): What does E0 mean on a Goodman GMVM97 furnace?
- [Goodman: Low-Stage Pressure Switch Stuck Closed (E1)](https://hvacfaults.com/goodman/gmvm97-e1/): What does E1 mean on a Goodman GMVM97 furnace?
- [Goodman: Low-Stage Pressure Switch Stuck Open (E2)](https://hvacfaults.com/goodman/gmvm97-e2/): What does E2 mean on a Goodman GMVM97 furnace?
- [Goodman: Open High-Limit Switch (E3)](https://hvacfaults.com/goodman/gmvm97-e3/): What does E3 mean on a Goodman GMVM97 furnace?
- [Goodman: Flame Detected With No Call (E4)](https://hvacfaults.com/goodman/gmvm97-e4/): What does E4 mean on a Goodman GMVM97 furnace?
- [Goodman: Open Fuse (E5)](https://hvacfaults.com/goodman/gmvm97-e5/): What does E5 mean on a Goodman GMVM97 furnace?
- [Goodman: Low Flame Signal (E6)](https://hvacfaults.com/goodman/gmvm97-e6/): What does E6 mean on a Goodman GMVM97 furnace?
- [Goodman: Igniter Fault or Improper Grounding (E7)](https://hvacfaults.com/goodman/gmvm97-e7/): What does E7 mean on a Goodman GMVM97 furnace?
- [Goodman: High-Stage Pressure Switch Stuck Closed (E8)](https://hvacfaults.com/goodman/gmvm97-e8/): What does E8 mean on a Goodman GMVM97 furnace?
- [Goodman: High-Stage Pressure Switch Stuck Open (E9)](https://hvacfaults.com/goodman/gmvm97-e9/): What does E9 mean on a Goodman GMVM97 furnace?
- [Goodman: Reversed 115VAC Polarity (EA)](https://hvacfaults.com/goodman/gmvm97-ea/): What does EA mean on a Goodman GMVM97 furnace?
- [Goodman: Inducer Motor Overcurrent (EC)](https://hvacfaults.com/goodman/gmvm97-ec/): What does EC mean on a Goodman GMVM97 furnace?
- [Goodman: Improper Wiring to the Furnace (EE)](https://hvacfaults.com/goodman/gmvm97-ee/): What does EE mean on a Goodman GMVM97 furnace?
- [Goodman: Open Auxiliary Input (EF)](https://hvacfaults.com/goodman/gmvm97-ef/): What does EF mean on a Goodman GMVM97 furnace?
- [Goodman: Blower Motor Not Running (b0)](https://hvacfaults.com/goodman/gmvm97-b0/): What does b0 mean on a Goodman GMVM97 furnace?
- [Goodman: Blower Communication Error (b1)](https://hvacfaults.com/goodman/gmvm97-b1/): What does b1 mean on a Goodman GMVM97 furnace?
- [Goodman: Blower Horsepower Mismatch (b2)](https://hvacfaults.com/goodman/gmvm97-b2/): What does b2 mean on a Goodman GMVM97 furnace?
- [Goodman: Blower in Power / Temperature / Speed Limit (b3)](https://hvacfaults.com/goodman/gmvm97-b3/): What does b3 mean on a Goodman GMVM97 furnace?
- [Goodman: Blower Current Trip or Lost Rotor (b4)](https://hvacfaults.com/goodman/gmvm97-b4/): What does b4 mean on a Goodman GMVM97 furnace?
- [Goodman: Blower Locked Rotor (b5)](https://hvacfaults.com/goodman/gmvm97-b5/): What does b5 mean on a Goodman GMVM97 furnace?
- [Goodman: Blower Voltage or Temperature Trip (b6)](https://hvacfaults.com/goodman/gmvm97-b6/): What does b6 mean on a Goodman GMVM97 furnace?
- [Goodman: Incomplete Parameters Sent to Motor (b7)](https://hvacfaults.com/goodman/gmvm97-b7/): What does b7 mean on a Goodman GMVM97 furnace?
- [Goodman: Low Indoor Airflow (b9)](https://hvacfaults.com/goodman/gmvm97-b9/): What does b9 mean on a Goodman GMVM97 furnace?
- [Goodman: Data Not Yet on Network (d0)](https://hvacfaults.com/goodman/gmvm97-d0/): What does d0 mean on a Goodman GMVM97 furnace?
- [Goodman: Configuration: Single-Stage Cooling + Dehumidification (d1)](https://hvacfaults.com/goodman/gmvm97-d1/): What does d1 mean on a Goodman GMVM97 furnace?
- [Goodman: Configuration: Two-Stage Cooling + Dehumidification (d2)](https://hvacfaults.com/goodman/gmvm97-d2/): What does d2 mean on a Goodman GMVM97 furnace?
- [Goodman: Invalid Memory Card Data (d4)](https://hvacfaults.com/goodman/gmvm97-d4/): What does d4 mean on a Goodman GMVM97 furnace?
- [Amana: Ignition Lockout (E0)](https://hvacfaults.com/amana/e0/): What does E0 mean on a Goodman furnace display?
- [Amana: Low-Stage Pressure Switch Stuck Closed (E1)](https://hvacfaults.com/amana/e1/): What does E1 mean on a Goodman furnace?
- [Amana: Low-Stage Pressure Switch Stuck Open (E2)](https://hvacfaults.com/amana/e2/): What does E2 mean on a Goodman furnace?
- [Amana: Open Primary, Auxiliary, or Rollout Limit (E3)](https://hvacfaults.com/amana/e3/): What does E3 mean on a Goodman furnace?
- [Amana: Flame Sensed With No Call for Heat (E4)](https://hvacfaults.com/amana/e4/): What does E4 mean on a Goodman furnace?
- [Amana: Open Fuse (E5)](https://hvacfaults.com/amana/e5/): What does E5 mean on a Goodman furnace?
- [Amana: Low Flame Sense Signal (E6)](https://hvacfaults.com/amana/e6/): What does E6 mean on a Goodman furnace?
- [Amana: Igniter Fault or No Ground (E7)](https://hvacfaults.com/amana/e7/): What does E7 mean on a Goodman furnace?
- [Amana: High-Stage Pressure Switch Stuck Closed (E8)](https://hvacfaults.com/amana/e8/): What does E8 mean on a Goodman furnace?
- [Amana: High-Stage Pressure Switch Stuck Open (E9)](https://hvacfaults.com/amana/e9/): What does E9 mean on a Goodman furnace?
- [Amana: Reversed Line Polarity (EA)](https://hvacfaults.com/amana/ea/): What does EA mean on a Goodman furnace?
- [Amana: No Shared Data (d0)](https://hvacfaults.com/amana/d0/): What does d0 mean on a Goodman furnace?
- [Amana: Invalid Memory Card Data (d4)](https://hvacfaults.com/amana/d4/): What does d4 mean on a Goodman furnace?
- [Amana: ECM Blower Motor Not Running (b0)](https://hvacfaults.com/amana/b0/): What does b0 mean on a Goodman furnace?
- [Amana: ECM Motor Communications Lost (b1)](https://hvacfaults.com/amana/b1/): What does b1 mean on a Goodman furnace?
- [Amana: Motor Horsepower Mismatch (b2)](https://hvacfaults.com/amana/b2/): What does b2 mean on a Goodman furnace?
- [Amana: ECM Motor in a Limiting Condition (b3)](https://hvacfaults.com/amana/b3/): What does b3 mean on a Goodman furnace?
- [Amana: Motor Trips (b4)](https://hvacfaults.com/amana/b4/): What does b4 mean on a Goodman furnace?
- [Amana: Display Reads ON — Normal](https://hvacfaults.com/amana/display-on/): What does ON mean on a Goodman furnace display?
- [Carrier: Status LED Off — No Power](https://hvacfaults.com/carrier/led-off/): Why is the status light off on my Carrier furnace?
- [Carrier: Rapid Flashing — Reversed 115V Polarity](https://hvacfaults.com/carrier/rapid-flashing/): Why is my Carrier furnace light blinking rapidly?
- [Carrier: Code 11 — No Previous Fault Stored](https://hvacfaults.com/carrier/11/): What does code 11 mean on a Carrier furnace?
- [Carrier: Code 12 — Blower-On After Power-Up](https://hvacfaults.com/carrier/12/): What does code 12 mean on a Carrier furnace?
- [Carrier: Code 13 — Limit Circuit Lockout](https://hvacfaults.com/carrier/13/): What does code 13 mean on a Carrier furnace?
- [Carrier: Code 14 — Ignition Lockout](https://hvacfaults.com/carrier/14/): What does code 14 mean on a Carrier furnace?
- [Carrier: Code 21 — Gas Heating Lockout (No Auto-Reset)](https://hvacfaults.com/carrier/21/): What does code 21 mean on a Carrier furnace?
- [Carrier: Code 22 — Abnormal Flame-Proving Signal](https://hvacfaults.com/carrier/22/): What does code 22 mean on a Carrier furnace?
- [Carrier: Code 23 — Pressure Switch Did Not Open](https://hvacfaults.com/carrier/23/): What does code 23 mean on a Carrier furnace?
- [Carrier: Code 24 — Secondary Voltage Fuse Open](https://hvacfaults.com/carrier/24/): What does code 24 mean on a Carrier furnace?
- [Carrier: Code 31 — Pressure Switch Did Not Close or Reopened](https://hvacfaults.com/carrier/31/): What does 3 short 1 long flashes mean on a Carrier furnace?
- [Carrier: Code 33 — Limit Circuit Fault](https://hvacfaults.com/carrier/33/): What does code 33 mean on a Carrier furnace?
- [Carrier: Code 34 — Ignition Proving Failure](https://hvacfaults.com/carrier/34/): What does code 34 mean on a Carrier furnace?
- [Carrier: Code 45 — Control Circuitry Lockout](https://hvacfaults.com/carrier/45/): What does code 45 mean on a Carrier furnace?
- [Bryant: Status LED Off — No Power](https://hvacfaults.com/bryant/led-off/): Why is the status light off on my Carrier furnace?
- [Bryant: Rapid Flashing — Reversed 115V Polarity](https://hvacfaults.com/bryant/rapid-flashing/): Why is my Carrier furnace light blinking rapidly?
- [Bryant: Code 11 — No Previous Fault Stored](https://hvacfaults.com/bryant/11/): What does code 11 mean on a Carrier furnace?
- [Bryant: Code 12 — Blower-On After Power-Up](https://hvacfaults.com/bryant/12/): What does code 12 mean on a Carrier furnace?
- [Bryant: Code 13 — Limit Circuit Lockout](https://hvacfaults.com/bryant/13/): What does code 13 mean on a Carrier furnace?
- [Bryant: Code 14 — Ignition Lockout](https://hvacfaults.com/bryant/14/): What does code 14 mean on a Carrier furnace?
- [Bryant: Code 21 — Gas Heating Lockout (No Auto-Reset)](https://hvacfaults.com/bryant/21/): What does code 21 mean on a Carrier furnace?
- [Bryant: Code 22 — Abnormal Flame-Proving Signal](https://hvacfaults.com/bryant/22/): What does code 22 mean on a Carrier furnace?
- [Bryant: Code 23 — Pressure Switch Did Not Open](https://hvacfaults.com/bryant/23/): What does code 23 mean on a Carrier furnace?
- [Bryant: Code 24 — Secondary Voltage Fuse Open](https://hvacfaults.com/bryant/24/): What does code 24 mean on a Carrier furnace?
- [Bryant: Code 31 — Pressure Switch Did Not Close or Reopened](https://hvacfaults.com/bryant/31/): What does 3 short 1 long flashes mean on a Carrier furnace?
- [Bryant: Code 33 — Limit Circuit Fault](https://hvacfaults.com/bryant/33/): What does code 33 mean on a Carrier furnace?
- [Bryant: Code 34 — Ignition Proving Failure](https://hvacfaults.com/bryant/34/): What does code 34 mean on a Carrier furnace?
- [Bryant: Code 45 — Control Circuitry Lockout](https://hvacfaults.com/bryant/45/): What does code 45 mean on a Carrier furnace?
- [Payne: Status LED Off — No Power](https://hvacfaults.com/payne/led-off/): Why is the status light off on my Carrier furnace?
- [Payne: Rapid Flashing — Reversed 115V Polarity](https://hvacfaults.com/payne/rapid-flashing/): Why is my Carrier furnace light blinking rapidly?
- [Payne: Code 11 — No Previous Fault Stored](https://hvacfaults.com/payne/11/): What does code 11 mean on a Carrier furnace?
- [Payne: Code 12 — Blower-On After Power-Up](https://hvacfaults.com/payne/12/): What does code 12 mean on a Carrier furnace?
- [Payne: Code 13 — Limit Circuit Lockout](https://hvacfaults.com/payne/13/): What does code 13 mean on a Carrier furnace?
- [Payne: Code 14 — Ignition Lockout](https://hvacfaults.com/payne/14/): What does code 14 mean on a Carrier furnace?
- [Payne: Code 21 — Gas Heating Lockout (No Auto-Reset)](https://hvacfaults.com/payne/21/): What does code 21 mean on a Carrier furnace?
- [Payne: Code 22 — Abnormal Flame-Proving Signal](https://hvacfaults.com/payne/22/): What does code 22 mean on a Carrier furnace?
- [Payne: Code 23 — Pressure Switch Did Not Open](https://hvacfaults.com/payne/23/): What does code 23 mean on a Carrier furnace?
- [Payne: Code 24 — Secondary Voltage Fuse Open](https://hvacfaults.com/payne/24/): What does code 24 mean on a Carrier furnace?
- [Payne: Code 31 — Pressure Switch Did Not Close or Reopened](https://hvacfaults.com/payne/31/): What does 3 short 1 long flashes mean on a Carrier furnace?
- [Payne: Code 33 — Limit Circuit Fault](https://hvacfaults.com/payne/33/): What does code 33 mean on a Carrier furnace?
- [Payne: Code 34 — Ignition Proving Failure](https://hvacfaults.com/payne/34/): What does code 34 mean on a Carrier furnace?
- [Payne: Code 45 — Control Circuitry Lockout](https://hvacfaults.com/payne/45/): What does code 45 mean on a Carrier furnace?

## Tools
- [Blink decoder](https://hvacfaults.com/tools/blink-decoder/): match an observed light pattern to the verified code
- [Methodology](https://hvacfaults.com/methodology/): verification process and sourcing policy