⚠
warning Goodman
Error Code E1
Pressure switch circuit open at start of heating cycle; pressure switch malfunction (sticking contacts, wiring fault).
? What Causes This
Faulty low stage pressure switch, wiring issues.
✓ How to Fix It
Replace faulty pressure switch, repair or replace shorted wire connections if present.
Source: page 51 of the official manual
From the manual
This error code appears in:
Goodman Gm9s96