John R M for Model Number LRA18HMU211 I had a power surge in our neighborhood and my window a/c unit now will only come on, light up the front panel, and then shut off. The unit itself never really comes on after it lights up all the circuits on the front panel, it just goes dark. I know that one of the PC boards has gone bad. Do you know how to tell which board is bad? There is a front PC Board that has all the lights and buttons on it and then there is the main PC board behind that one. I was just wondering which of these 2 PC boards is being ordered more than the other. That may lead me to seeing which one I need to order. Thank You for Your Time and Have a Great Day!!! John R. Mertz
Answer John, This issue would be caused by a faulty main PC board 5304483065. Read More... Answered by AppliancePartsPros.com | Friday, September 27, 2013