Thanks h0ckeysk8er,
My Control-R started acting up a couple weeks ago and then could not connect to my wifi network. I then tried the Control-r 2.0 app and got into the infinite upgrade loop cycle. After fixing the issue over the phone with Rinnai support a couple weeks ago, the module seems to maintain a stable connection to my wifi network now.
I also have tested the Smartthings integration for the last 10 days or so and while the authentication expiration problem appears to be resolved, there are some quirks with the integration. For example, if I trigger a recirc from the Smartthings app or from a Smartthings button, it takes about 3 minutes for the recirc at the Rinnai tankless heater to actually start. Based on my testing, I believe the recirc continues for a long time and so I’ve set an automation to turn off the recirc in Smartthings after 5 minutes. Due to the delays in the Rinnai <-> Smartthings integration, the time between turning the recirc on and off can vary.
Starting the recirc through the proprietary Rinnai Module-R button is immediate and so is much more useable for me. We press the button for a recirc about 5 minutes before taking a shower or before using the sink in the morning. Unfortunately, this button costs almost $100 and I bit bullet last year since I couldn’t wait any longer for the Rinnai <-> Smartthings integration to work. Overall, I’m pleased that the integration is progressing but I think more tweaks still need to be made.