BoilerFaultCodesRemeha 3 2. Fault Code
Also written as 32 — same fault.
The Remeha 3 2. fault code means: your boiler has detected a technical fault with the sensor that monitors water returning to the unit, causing the system to shut down as a safety precaution.. It appears on 3 Remeha models in our database.
Technical description: Temp.sensor fault: Short-circuit in return temperature sensor.
What causes the Remeha 3 2. fault?
This fault occurs when the boiler’s internal computer receives an incorrect electrical signal from the sensor that monitors water coming back from your radiators. The most common reason is that the sensor has developed an internal electrical short or the protective coating on the connecting wires has worn away, causing the system to shut down for safety. In some cases, water ingress or moisture near the electrical connections can also trigger this specific error.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Remeha models that show the 3 2. fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Remeha 3 2. fault code information on this page is sourced and cross-checked against the official Remeha service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026