What does the Baxi 600 Series E270 fault code mean?
The E270 fault code on the Baxi 600 Series indicates a domestic hot water (DHW) pressure fault. This typically means that the pressure in the system is either too low or too high, affecting the boiler’s ability to provide hot water efficiently.
Common Causes
- Low Water Pressure: This can occur due to leaks in the system or insufficient water supply, leading to inadequate pressure for hot water production.
- Faulty Pressure Sensor: A malfunctioning pressure sensor may incorrectly read the system pressure, triggering the fault code even if the pressure is normal.
Can I fix it myself? (DIY)
If you are comfortable, you can check the pressure gauge on the boiler and attempt to refill the system if the pressure is low (below 1 bar). However, if the pressure is high or if you suspect a fault with the pressure sensor, it is crucial to call a Gas Safe Engineer for assistance.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the E270 fault could range from £150 to £300, depending on whether it requires a simple pressure adjustment or the replacement of a faulty pressure sensor, which can be more expensive due to parts and labour.