BoilerFaultCodesIdeal EA Fault Code
The Ideal EA fault code means: your heat pump has stopped working because a sensor that monitors the temperature of the outgoing refrigerant gas is reporting an incorrect or faulty reading.. It appears on 2 Ideal models in our database.
Technical description: Discharge Thermistor (Tp) Error
What causes the Ideal EA fault?
This fault occurs when the system's control board receives an impossible or unstable temperature reading from the sensor on the compressor outlet. The most common reason is a physical failure of the internal sensor components or a loose wiring connection that prevents the heat pump from safely monitoring its own operating temperature.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Ideal models that show the EA fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ideal EA fault code information on this page is sourced and cross-checked against the official Ideal service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026