High
Microprocessor faulty on Ferroli Arena 30 C

The computer that controls your boiler is experiencing an internal error, which means the system cannot safely start or regulate your heating and hot water.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

What the manual says

Manufacturer manual

Microprocessor operation faulty

From this model's manual
Verified against the Ferroli/Ferroli Arena 30 C 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 is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

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All 18 fault codes on the Arena 30 C

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

ADomestic hot water sensor faultyExcessive central heating outlet temperatureExcessive central heating return temperatureExternal probe faultyFFailed burner assembly ignitionFan faultFlue gas sensor faultyFlue safety device interventionHigh flue gas temperatureInsufficient water system pressureNo communication between main board and ignition devicesNo flame following the ignition phaseOutlet sensor faultyReturn sensor faultySafety thermostat activation

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