⚠
warning Aprilaire
Error Code F01
Fill valve issues such as water hammer or blocked hoses.
? What Causes This
Potential blockage in fill valve due to hard pipe use. Or water pressure line contact with ductwork causing vibrations.
✓ How to Fix It
Install a shock arrestor; check steam hose connections for blocks, ensure proper insulation and mounting.
Source: page 27 of the official manual
From the manual
This error code appears in:
Aprilaire 800