Display alternates between normal screen and “Service” or wrench icon, indicating a service reminder or detected fault.

Safety: Most service reminders do not require immediate disassembly, but always disconnect power and bypass water before opening the valve.

Steps:

• Review manual: Check the Clack controller manual to determine whether the “Service” message is a timed reminder or a specific fault indicator.
• Perform basic maintenance: Clean the injector and screen, inspect the brine tank for salt bridges, and verify that the drain line and brine line are clear.
• Check settings: Confirm hardness, capacity, and regeneration frequency are programmed correctly for your water conditions.
• Reset reminder: If the message is a time-based service reminder, follow the keypad procedure to reset the service interval after maintenance.
• Monitor performance: If the message returns quickly or is accompanied by hard water or regeneration issues, schedule a full inspection by a water treatment professional.

Tip: Use the service reminder as a cue to perform annual maintenance on the Clack valve and brine system.