Error code P4 (Sendo Atlas).

Error code P4 (Sendo Atlas).

  1. Check whether the condensation pressure is excessive or not
  2. If the temperature is normal, the problem comes from the damaged temperature sensor of the external element, so we proceed to replace the sensor.
  3. Check whether the condenser is blocked by pollutants, whether air circulation is served, whether the engine of the external wing is operating normally or not, and finally whether the entire circulation system is blocked or not


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