Low
F51 on ECA Confeo Premix HST

Your boiler has detected a problem with the sensor monitoring your solar heating system, which is causing the unit to stop operating.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

PT1000 Solar Sensor Error (blocking) — PT1000 solar sensor may be defective; press Reset; if persists notify ECA authorised service

From this model's manual
Verified against the Eca Confeo Premix Hm installation & service manual, page 43.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Locate the Reset button on the boiler control panel.Press and hold the Reset button for 3 seconds.Wait to see if the error clears and the boiler restarts.If the code returns immediately, contact a qualified engineer.

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Related fault codes

F50View →F52View →

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