BoilerFaultCodesPotterton E32 Fault Code
The Potterton E32 fault code means: your boiler is struggling to accurately measure the temperature of your hot water, which usually means the water will either be too cold or the system will stop providing hot water altogether.. It appears on 3 Potterton models in our database.
Technical description: DHW thermistor error
What causes the Potterton E32 fault?
This fault occurs when the internal sensor responsible for tracking your tap water temperature fails or sends an incorrect signal to the control board. The most common reason is that the sensor has physically degraded over time or developed a faulty electrical connection, preventing the boiler from knowing how much to heat the water. To protect you from scalding or damage, the boiler will usually stop heating the water until the part is replaced.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Potterton models that show the E32 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Potterton E32 fault code information on this page is sourced and cross-checked against the official Potterton service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026