Ariston EE 0055 Fault Code
Also written as EE0055 — same fault.
The Ariston EE 0055 fault code means: your boiler has detected a faulty sensor, meaning it cannot correctly measure the temperature of the hot water going to your taps.. It appears on 4 Ariston models in our database.
Technical description: Domestic hot water temperature probe in short circuit
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Ariston models that show the EE 0055 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ariston EE 0055 fault code information on this page is sourced and cross-checked against the official Ariston service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026