Goodman Package Units: GPG13 & 14 Re: Lockout Codes Red Light Description Off No Power or Faulty control On Power On 1 Ignition Failure, Open Rollout or Open Aux Limit 2 Pressure switch failed to close 3 Pressure switch failed to open (stuck...

Goodman Package Unit: GPG14 Re: Flashing Code 3 Code 3 = Pressure switch failed to open (stuck closed) The furnace pressure switch should only close when the inducer fan output is energized. If control board is not energizing the inducer fan output and the switch is closed, the board will...

Goodman Package Unit: GPG14 Re: Low on Refrigerant A package unit that is low on refrigerant indicates a refrigerant leak. Qty Possible Causes (From Most to Least Likely): Leaking Indoor Coil Leaking Outdoor Coil Leaking Schrader Other Leak ...