Samsung split ac display timer light continue Blinking whats problem how solve this type fault learn in hindi

This video making for learning ac repairing work for new technician and for helping 
about this video this video in learn Samsung split ac indoor display timer light ya yellow light continue flushing blinking whats Problem how check this type troubleshoot find and sensor checking tips trick learn in Hindi full video watching open this link watch https://youtu.be/2UljNQwWxY4