Chosen Solution

Good day I don’t get the outside temperature reading on the indoor unit Nor the time is synchronized

Hi @Salem Hendow You said that “Then I reinstalled the battery in the out side sensor…” Did you replace them with new ones or just reinsert the existing ones? If existing ones, I would replace them just to eliminate them as a possible cause. If still no good then try moving the outdoor sensor closer to the main unit just to see if it registers all the time. It may be that there is a signal that may be interfering with the sender’s signal and confusing the main unit. Have there been any new appliances installed or structures installed between the sensor and the main unit? About the radio reception for the time signal, what is the radio signal strength indicator showing, 1, 2, 3 or 4 bars? Has the radio been moved to a different location? Try placing it near a window and check the signal strength Just trying to eliminate things.