What does the Vaillant ecoFIT pure F44 fault code mean?
The F44 fault code on the Vaillant ecoFIT pure indicates a malfunction with the hot water sensor, which is responsible for monitoring the temperature of the water. This issue can lead to improper heating or no hot water supply.
Common Causes
- Faulty Hot Water Sensor: The sensor may be defective or damaged, leading to incorrect temperature readings.
- Wiring Issues: Damaged or loose wiring connections to the sensor can disrupt its functionality, causing the fault code to appear.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and gas safety regulations. Attempting to fix it yourself could pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing a faulty hot water sensor on a Vaillant ecoFIT pure is around £150 to £200. This includes the cost of the part and labour for a qualified engineer.