!
error Goodman
Error Code E2
Pressure switch circuit not closed (flue obstruction, improper installation of hose).
? What Causes This
Blocked flue piping or improperly assembled pressure switch components.
✓ How to Fix It
Inspect and correct blockages in the ventilation system; repair/realign hoses connected to switches.
Source: page 51 of the official manual
From the manual
This error code appears in:
Goodman Gm9s96