Low
F51 on ECA Proteus Premix 24 HCH

Your boiler has detected an issue with the external temperature sensor used for a solar heating system, meaning it cannot accurately read the solar panel temperature.

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

From this model's manual
Verified against the Eca/Eca Proteus Premix 24 Hch installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

F50View →F52View →

All 28 fault codes on the Proteus Premix 24 HCH

Seeing a different code? Every code this model can display, in one place.

E01E02E03E05E08E09E12E15E16E17E18E21E33E35E80E82F07F13F34F37F39F40F47F50F52F53F81

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