Low
F51 on ECA Proteus Premix 24 HCH

Your boiler has detected a problem with the sensor monitoring your solar heating system, meaning these two systems are not communicating correctly.

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 - PT1000 solar sensor might be defective.

From this model's manual
Verified against the Eca Proteus Premix 24 Hch installation & service manual, page 39.
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 →

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