Softener frequently switches to emergency or bypass mode without showing a specific error code

Safety: Investigate for leaks and overpressure before returning to normal operation.

• Check for leaks: Inspect the base tray and all connections for signs of intermittent leakage that might trigger safety mode.
• Monitor pressure: Verify that inlet pressure is stable and within specification. Install or service a pressure reducing valve if necessary.
• Stabilize power: Ensure the unit is connected to a reliable power source without frequent interruptions.
• Service check: If the cause cannot be identified, have a Grünbeck service technician run extended diagnostics on the control and valve head.