search

home-climate-control / dz

Home Climate Control Core: *the* Open Source multi-zone temperature and climate control system.
http://homeclimatecontrol.com/
GNU General Public License v3.0
59 stars 7 forks source link

"Sticky" sensors confuse economizer process control logic #290

Closed climategadgets closed 11 months ago

climategadgets commented 11 months ago

Expected Behavior

Sensor abstractions emit sensor data if available, error signal if not, on a defined rate.

Actual Behavior

Under undetermined circumstances, a sensor signal processing pipeline keeps emitting a stale reading as current, causing control logic to issue improper actuator signals. Meanwhile, sensors are working as expected, they are not the root cause.

Manifestation

Painfully obvious. image

Root Cause Analysis

At this point, it appears that the culprit is a flaky Z-Wave device - Minoston MP31ZP.

Workaround

For now see if using the optimistic flag in the configuration fixes the problem, however, hardware replacement is recommended. See Hardware Support for suitable replacements.

Related Issues

280 , #292

climategadgets commented 11 months ago

Root cause identified, device replaced, continuing operation normally. Follow up and corrective action in #292.