When in Warm/Warm cycle only cold water filling. Suspected hot water fill valve. Tested coil with meter,OK . After removal from machine tested outside by connecting to water and electrical power. It is working. After installing into machine tested on all cycles. When cycle requires warm water only cold water is filling. On hot cycle hot water is filling. The only option I see is faulty main control board. It is an expensive part. I would like to see if anybody had similar issue. Maybe other suggestions. Thank you