What does the list of error codes on my dehumidifier correspond to?

ERROR E1/H1: this is either an operating error of the temperature or humidity sensor, or the device is operating in an abnormal environment (near a radiator for example). If the product is dirty: clean the back of the device with a vacuum cleaner.
ERROR E2: room temperature problem (too hot or cold). If the product has just been unpacked, leave it in the open air for 48 hours.
ERROR P1: the device is in Defrost mode, this is normal.