Display shows SERVICE or CALL FOR SERVICE and unit may still operate but with limited functions

Safety: No immediate hazard, but always disconnect power before opening the control housing.

• Review manual: Check the AFWFilters manual for the specific meaning of the SERVICE indicator on your model. Some units use it as a time-based reminder.
• Check error history: If your control supports it, view the error log to see which faults triggered the service message (e.g., past flow or brine errors).
• Perform basic maintenance: Top off salt, clean the brine tank, inspect the injector and drain line, and verify programming.
• Clear reminder: Use the control menu to reset the service interval or clear the service message after maintenance.
• Contact support: If the SERVICE message returns quickly or is accompanied by other error codes, consult AFWFilters technical support or a qualified technician.