⚠
warning Goodman
Error Code E3
Primary limit circuit open indicating insufficient air over heat exchanger (blocked filters, ductwork).
? What Causes This
Restricted or dirty filters/ductwork, incorrect blower speed/frequency.
✓ How to Fix It
- Clean/inspect/reposition filters.
- Adjust blowers to appropriate settings for optimal airflow.
Source: page 51 of the official manual
From the manual
This error code appears in:
Goodman Gm9s96