Upon receiving the call, I promptly diagnosed the issue with the front load washing machine. The machine was not operating correctly, and the problem was traced to the water level pressure switch. I carefully disassembled the washing machine to access the faulty component. After confirming the diagnosis, I replaced the defective water level pressure switch with a new one. I then reassembled the machine and conducted a thorough test to ensure the issue was resolved. The washing machine now operates smoothly, and the customer is satisfied with the restored functionality.