Display shows “Err 12” and unit reports low inlet pressure or fails to regenerate due to insufficient water

Safety: Do not operate the softener with extremely low pressure; it may not regenerate correctly.

• Measure pressure: Use a pressure gauge on a nearby tap to confirm inlet pressure. Ecowater softeners typically require at least ~1.4–2 bar.
• Check valves: Ensure the main stopcock and Ecowater bypass valves are fully open in the service position.
• Clean pre-filters: If a sediment or carbon pre-filter is installed, replace or clean the cartridge. A clogged filter can cause low pressure.
• Inspect inlet screen: Remove and clean any inlet screens on the Ecowater valve body.
• Sensor check: On models with a pressure sensor, inspect the sensor and wiring. Replace if pressure is normal but Err 12 persists.