How to resolve F40 High Water Pressure Fault on ECA PROTEUS PREMIX PPR?
- LLorraine BaileyAug 28, 2025
If the ECA Boiler displays error 'F40: High Water Pressure Fault', it means that the water pressure sensor has detected a high water pressure (3,3 ±0,3 bar). Check the water pressure in the heater installation. Turn off the boiler and restart it. If the error persists after reset, contact a gas safe engineer.



