We have some automatic on & off settings on our Hub to keep the humidity constant in one small cupboard. The humidity is monitored by T310. At night when the humidity gets over the trigger point, the H100 triggers the P115, but when the humidity gets down to the "off" point, the P115 does not turn off, so the temperature goes down & down. The On point is of course above the off point by 0,5%. Disengaging the automation, the P115 can be turned on and off with the iPhone app no problem. The router network is stable.  Do we have a faulty hub?