Thank you for your fast service. As you know I told you I put the ice-maker in the test mode and found out no water fill in. Actully, I looked into the wrong position instead of looking at right side of the ice-maker at 10.00 position I looked at the left side at 2.00 position before I pulled out the jumper that why I never see water fill in.
Then, this time I bypassed the IR control, the water filled in. I also tested the ice-maker without bypass the IR control with the jumper and the water filled in, too. Disconnect the power immediately after the water filled. With the freezer door closed, reconnect the power. Wait for about 5 seconds, and then open the freezer door, and the LED blinks 3 time. Ice-maker bad? Please let me know what should I check next. Thank you.