Sorry for two posts in one day, I'm just really trying to make sure I have proper expectations for my system. I have a WaterFurnance Series 7 4 ton with the performance monitoring package. Official number NVV048A111CTL0KN. I have it plumbed to a Marathon 85 Gallon buffer tank and then connected to a Rheem Hybrid finishing tank. It was installed over this part winter. My questions is about the desuperheater. It seemed to work well in the winter. The circulating pipes were warm when the system was running. The energy monitoring of the hybrid tank showed little energy use during the cold days when the GEO was running a lot, indicating the buffer tank was getting nice and warm (it's hard to tell on the Rheem marathons with their super-insulation). When I was sold the system, I was told that in the summer, it would create a ton of hot water. My simple understanding of AC systems seemed to think it would make sense that it would extract heat from the system during the refrigerant compression stage. So when the warm weather hit, I was excited to see how warm the circulating pipes got. Turns out, not much. I have accessed AID port using the local network access through the AWL. AXB setup indicated DHW is enabled and I've tired setting the temp between 130 and 140. Under the diagnostics menu, AXB Inputs indicates Hot Water of 81.5F after about 10 hour of running the AC and little water use (no showers, tubs, pools, etc). Is that the correct place to check the DHW temp? Since the switchover to cooling, I've had around 30 "Hot Water Limit E15" faults. I know those are "normal" but at no time have the circulating pipes felt anything close to warm. Nothing even close to the winter even after a full day of AC. I've opened the unit and the circulating pump feels a little warm. I've about 95% sure water is indeed circulating. When I begin to close the circulating circuit valves sightly, I can hear the sound of water"whooshing" over the slightly closed valves. When I put my ear to the pipes with the DHW switch on and off, the sounds are distinctly different. So it seems like the pump is working. So here is my problem. A tech came out to look at the system and he didn't know why I was not getting more warm/hot water. He removed the sensor from the circulating pipe and said it correctly read the ambient temperature, so he didn't think that was the problem. He's convinced its the circulating pump. Although it's drawing current, he thinks the impeller is damaged and not really circulating water. Because of the different sounds I hear when it's running, I think it is. I also find it hard to believe that a pump would fail after just 7 months. I really don't want to have a tech tear into a nearly new system on a hunch, especially what feels like a bad one. I asked if he could access the system data from the WaterFurnance Dealer Portal to see historical DHW recorded temps, but he said they never use the dealer portal to troubleshoot. My tech seems averse to the monitoring systems and had me do a lot of the Symphony setup when it was first installed. Which makes the money I spent on it feel half useless if the dealer doesn't use it and I can see it either. In researching further on the forum and the WF install guides. I'm reading "Compressor hot gas temperature is dependent on loop temperature in cooling mode, loop temperatures may be too low to allow proper heating of water. The control will monitor water and refrigerant temperatures to determine if conditions are satisfactory for heating water." My EWT is varies between 56 and 64 degrees based on runtime. LWT is usually 8-10 degrees above that. So I'd assume that should result in refrigerant temps warm enough for DHW. Are my expectations for summer DHW too high? Should I let the tech replace the pump or have him get on the phone with WF first? What else can I check on my side via the AID port or other on board diags to troubleshoot. Id really like to see this system work for 20-25 years. A pump after 7 months scares me. HELP (and thank you!). I'm happy to pull any data.