The softener cabinet or surrounding area smells musty or moldy.

Safety first: Unplug the unit and avoid standing water around electrical outlets.

Step-by-step checks:

• 1. Inspect for leaks:
  • Check around the valve head, bypass, and plumbing for slow leaks.
• 2. Check brine tank:
  • Ensure the brine tank is not overfilled and the float is working.
• 3. Clean and dry:
  • Clean the cabinet and surrounding area with a mild bleach solution.
  • Improve ventilation if the unit is in a confined space.