What does error E2 mean on the ARISTON PRIOS 35 air conditioner and how can it be resolved?

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Error E2 on the ARISTON PRIOS 35 air conditioner indicates a malfunction of the ambient temperature sensor. This sensor detects the room temperature and is essential for the unit to properly adjust cooling or heating. When E2 appears, it means that the sensor is either short-circuited or has a faulty connection.

Start with a simple restart: turn off the air conditioner using the remote control or the power button, unplug the unit from the electrical outlet for 2 to 3 minutes, then plug it back in and turn it on. This may resolve a false positive or a temporary system error. If error E2 reappears after this restart, proceed to the next steps.

Visually check the temperature sensor located on the remote control or near the internal control panel of the air conditioner. Ensure that the sensor is not damaged, wet, or covered in dust. Gently clean it with a dry cloth if necessary. Also check the electrical connections near the sensor: a poorly connected plug or a worn cable can cause this error.

If the sensor appears intact but the error persists, check that the air filters of the PRIOS 35 air conditioner are not clogged, as poor air circulation can affect the sensor readings. Clean or replace the filters (especially the anti-bacterial platinum filter and the aromatherapy filter if present).

If error E2 persists after these checks, the temperature sensor will need to be replaced. This repair requires the intervention of a qualified professional, as it involves working on the internal components of the air conditioner and could further damage the unit if done incorrectly. Do not attempt to disassemble the internal components of the PRIOS 35 yourself. Contact an authorized ARISTON technician who can accurately diagnose the faulty sensor and safely replace it, adhering to the technical specifications of your model.

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