BoilerFaultCodesECA F52 Fault Code
The ECA F52 fault code means: your boiler has detected a problem with the sensor that monitors your hot water temperature, which means you likely have no hot water or the temperature is inconsistent.. It appears on 4 ECA models in our database.
Technical description: Error on Temperature Sensor for Domestic Water (blocking) — domestic water temperature sensor may be defective; notify ECA authorised service
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Avoid the next call-out bill
A cover plan would handle faults like F52: no call-out fees, no surprise bills.
Affiliate links. We may earn a commission at no extra cost to you.
ECA models that show the F52 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
ECA F52 fault code information on this page is sourced and cross-checked against the official ECA service / installation manuals for each affected model.
- ECA Confeo Premix HCH manual (PDF)
- ECA Confeo Premix HM manual (PDF)
- ECA Confeo Premix HST manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026