Emergency
E 20 on Ariston Euro Combi 30 MFFI

Your boiler has detected a flame even though it has commanded the gas supply to shut off, meaning it has safely locked itself to prevent a potential hazard.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

What the manual says

Manufacturer manual

Flame detect with gas valve off

From this model's manual
Verified against the Ariston/Ariston Euro Combi 30 Mffi 4711645 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 emergency severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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All 30 fault codes on the Euro Combi 30 MFFI

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

0506A 18A 37A 39A 40A 41A01A03E 05E 06E 07E 08E 09E 10E 11E 12E 13E 14E 15E 16E 29E 37E 38E02E04E18E30E33

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