Unknown
AA99 on Ariston ACO 32 MFFI

Ariston ACO 32 MFFI fault code AA99

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

What the manual says

Manufacturer manual

Problem with the electronic monitoring

From this model's manual
Verified against the Ariston/Ariston Genus Premium Combi 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 fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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All 30 fault codes on the ACO 32 MFFI

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

A01A02A33AA01AA02AA03AA07AA33AA97AA98E08E33E95EE04EE05EE06EE07EE08EE09EE10EE20EE30EE31EE33EE34EE80EE94EE95EE99

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