I have a very simple, three wire, 24V zone valve hot water baseboard (hydronic) heat only installation. I am using connections RC, W and C. There are no jumpers.
I am using RC lead (red) because the Wyze therm can not use the RH connection for power. The W (white = heat) wire gets closed to the RC (red) lead when the thermostat calls for heat.
I have 5 zones of hot water baseboard heat. All are identical. There are 5 legacy thermostats in my home on a Taco multi-zone controller. I want to upgrade to Wyze terms for occupancy detection and heat scheduling.
There is not a compatibility issue. I have a working installation of two Wyze thermostats. Therm #1 has been in service for 6 months. I got two new terms this week. I am waiting on the ‘satellite’ Wyze therm for the other two zones.
I decided to use the existing, working location to setup the two new therms. That takes out all of the variables and errors.
I took the working therm off the mount, put on new therm #2 and did the setup. New therm #2 sets up. Works great. I installed #2 at the new location. It works fine.
I then put new therm #3 on the working setup location. I go thru the exact same setup of therm #3 at the working location. Good wiring, good WiFi.
It goes all the way thru setup, but hangs on ‘finishing.’ The install fails.
I put my original #1 therm back on the mount used for setup. It works fine. This rules out the mount, the wiring and my heating system. #1 and #2 therms both work. #3 does not.
I can see the bluetooth address of therm #3 in the app, even though it won’t finish the setup process.
I can’t remove #3 from the list of devices in the app. I have reset therm #3 about 4 times, and restarted the setup from the beginning.
It won’t finish. The finishing wheel just keeps turning. I left it about an hour, still turning.
I have an open support ticket, and I have sent pictures of everything so that they can follow the scripted troubleshooting. I am very familiar with thermostat wiring. I have two Wyze thermostats installed and working.
I have asked for escalation, and I’m at my wits end. Any suggestions here?