Rheem R-410A Complete Split System Heat Pump 2 Ton 14 SEER 11.6 EER. RHKLHM Series "81sv 40d" Questions

...81SV-40D water heater, water is hotter in the morning and only warm at night. I don't see a time or anything. Can you please help me to figure out what's wrong? thanks Dear Chu, I think I am hearing ...