High
1 P 3 on Ariston HS Premium

Your boiler is struggling to detect water circulation, which means it has safely shut down to prevent the system from overheating.

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

Primary circuit group signal

From this model's manual
Verified against the Ariston/Ariston Hs Premium installation & service manual, page 21.
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

1 P 1View →1 P 2View →

All 42 fault codes on the HS Premium

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

1 0 11 0 31 0 41 0 51 0 61 0 71 0 81 1 01 1 61 1 81 121 141 P 11 P 22 0 53 0 13 0 23 0 33 0 43 0 53 0 63 0 73 P 94 1 14 1 24 1 35 0 15 0 25 045 P 15 P 25 P 36 1 06 1 28230035054755427Err / 108Err / 110

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