On this page you can find Goodman furnace error codes which you may see during its operation time in case of any faults. Goodman furnace can display some letters and numbers or demonstrate flashes on the screen, depending on the modification and furnace type.
There are several furnace modifications presented in the code tables. Besides Goodman fault codes, there are the messages which can also appear, status and data related to these codes. This information can give you the idea about any necessary further actions – for example, 3 flashes mean that Goodman pressure switch stuck open, and 2 flashes mean the same part stuck closed.
Goodman CVC995 Furnace Error Codes
| CODES | DESCRIPTION |
|---|
| Steady on | Normal operation |
| OFF | Control Failure |
| 1 Flash | System lockout (Retries exceeded) |
| 2 Flashes | Pressure switch stuck closed |
| 3 Flashes | Pressure switch stuck open |
| 4 Flashes | Open high limit |
| 5 Flashes | Flame sense without gas valve |
| 6 Flashes | Open rolloutor open fuse |
| 7 Flashes | Low flame signal |
| Continuous/Rapid Flashes | Reversed 115 vac polarity |
Goodman DDS series Furnace Error Codes
| Temp Display Message | Scrolled Message | Status |
|---|
| Not Displayed | Not Displayed | Power Up |
| Not Displayed | Not Displayed | Normal/Standby |
| EE | INTERNAL FAULT | Internal Control Fault/No Power |
| EO | LOCKOUT | Lockout Due to Excessive Retries |
| E1 | PS1 CLOSED | Low Stage Pressure Switch Stuck Closed at Start of Heating Cycle |
| E2 | PS1 OPEN | Low Stage Pressure Switch Stuck Open |
| E3 | HIGH LIMIT OPEN | Open High Limit Switch |
| E4 | IMPROPER FLAME | Flame Detected When no Flame Should be Present |
| Not Displayed | Not Displayed | Open Fuse |
| E6 | WEAK FLAME | Low Flame Signal |
| E7 | IGNITER FAULT | Igniter Fault or Improper Grounding |
| E8 | PS2 CLOSED | High Stage Pressure Switch Stuck Closed at Start of Heating Cycle |
| E9 | PS2 OPEN | High Stage Pressure Switch Stuck Open |
| EA | REVERSED PLTY | Reversed 115VAC Polarity |
Goodman GDH series Furnace Error Codes
| Temp Display Message | Scrolled Message | Data 1 and Data 2 Miswire |
|---|
| dO | NO NET DATA | Data not yet on Network |
| d4 | INVALID MC DATA | Invalid Memory Card Data |
| bO | MOTOR NOT RUN | Blower Motor Not Running |
| b1 | MOTOR COMM | Blower Communication Error |
| b2 | MOTOR MISMATCH | Blower Motor HP Mis-Match |
| b3 | MOTOR LIMITS | Blower Motor Operating in Power, Temperature, or Speed Limit |
| b4 | MOTOR TRIPS | Blower Motor Current Trip or Lost Rotor |
| b5 | MTR LCKD ROTOR | Blower Motor Locked Rotor |
| b6 | MOTOR VOLTS | Over/Under Voltage Trip or Over Temperature Trip |
| b7 | MOTOR PARAMS | Incomplete Parameters Sent to Motor (bit 10) |
| b9 | LOW ID AIRFLOW | Inadequate Airflow |
