I did some continuity testing and all seemed well after reseating the terminal block which I had half-dislodged while taking the cover off the controller box, disabling almost all the heating in the house for 2 days of 0C weather. 😂 So I decided to take a look at the other end of the wire at the thermistor in the bathroom.
As I was popping the plate with the thermistor out of the wall, I realized that an icy draft was howling through the junction box, directly onto the back of the thermistor...
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.