High
E02 on Ariston Eurocombi A/23 MFFI

Your boiler has stopped working because the water pressure inside the heating system has dropped too low.

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

PCB checks the pressure of the primary circuit, if the pressure measured is 0.8 bar or lower, the boiler will lockout after 40 seconds.

From this model's manual
Verified against the Ariston/Ariston Euro Combi 30 Mffi 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

E04View →

All 33 fault codes on the Eurocombi A/23 MFFI

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

050610121314A 01A02A03A04A05A06A07A08A09A10A11A12B01B02B03B05B06B07B08BOILER SHUTDOWNIgnition LockoutINSUFFICIENT WATERL.E.D. DL.E.D. GLimescale Build-upSafety Shut-off

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