While filling, water flow seems slow and could hear noise similar to a hum or buzz. Replaced water inlet solenoid valve (AP4023852) from this site but didn't seem to notice much improvement. Now at times no flow. All hoses are clean with full flow. Tapped water valve and got flow for a while then back to no flow. Problem on initial fill, rinse 1 and rinse 2 for all cycles. Did I get a bad valve or is there another reason for the problem?

Already tried water temp select switch on all settings. Also checked for loose wires on valve but will check timer. Do you know where I can download a wiring diagram?

Ok. Checked all wiring at the valve and control panel. All connections are tight and wired correctly. Did a test wash last night with hot wash/warm rinse. During fill, flow seemed normal except for hum or buzz which occasionally stopped. Tried a second load with warm wash/cool rinse. During fill, cold feed abruptly stopped resulting in hot water only. Stopped cycle and when restarted, cold feed stopped again. I cycled through temperature select buttons (fully pressed in) with same results. Replaced water inlet solenoid valve (AP4023852) ~1 month ago from this site but didn't seem to notice much improvement. Did I get a bad valve or is there another reason for the problem?

Thanks Jeff! APP was very cooperative and is sending out a new valve. I hope this solves the problem. I wouldn't have expected that the new valve would be defective, but I guess it happens sometime. I'll follow up after I install the new valve.