Now here’s a question for our Sonoff/ eWeLink colleagues:
As we are becoming more familiar with the TRVZB we should be aware that every Monday at 12 noon (local time) the device goes through a calibration process that includes opening and closing the valve. My question is does the valve Open and Close to the default value of 100% or does the valve Open and Close to the % value set by the user ? Thank you.
Thinking about valve opening and closing % it would be very useful if the TRVZB was intelligent enough to decide for itself how many % to open or close. For example if I set a target temperature of 20deg C while the ambient temperature is 15degC this would imply that the room is required to heat up quickly and a valve open of 100% would be justified. But as the room reaches to the target temperature a reduced open % would provide closer hysteresis. I guess this second part of my post is a feature request.
The TRVZB will calibrate itself (open/close once) at noon every Monday in all three modes (Manual/Auto/Off). The indicator will show ”CA“ while calibrating, thus, if you switch off the TRVZB, it will run the calibration as well to prevent the valve from any stuck issue.
For what purpose would the TRVZB supposedly calibrate every week? It happens once, just after the initial start-up, and is intended to establish the ‘fully open’ and ‘fully closed’ positions. Know that the Sonoff TRVZB cannot control the degree of valve opening.
Setting aside the device’s advantages, this remains its most notable limitation—and for some, a considerable drawback.
CAlibrate or deCAlcify does it really matter ? The fact is that the valve opens and closes. I can think of a number of reasons why the TRVZB would go through a periodic calibration process.
Since my original posts I have tested the TRVZB and can confirm that at 12 Noon (local time) on Mondays when the valve implements its CA task the valve does open to 100% not the open % set by the user in the device setting menu.
