Tuya TRVs not opening

First post , hopefully posted in the correct category!

I have two Tuya TRVs set up with Scheduler to set the temperature at defined times of the day. When either valve changes from idle to heat, an automation turns on the CH pump via a Sonoff ZBMINIR2 and vice versa.

Everything seems to be working except the valves do not open to let the hot water through. Within HA they are showing as ‘heating’, the CH valve has been opened, but the radiator remains cold.

One of the TRVs is being controlled with ‘Generic Thermostat’ the other with ‘Better Thermostat’. They both behave the same.

HAOS running on Windows 11 NUCBOXG2, with Oracle VirtualBox Version 7.2.4 r17099
HAOS Core 2026.3.1
Supervisor 2026.02.3
Operating System 17.1
Frontend 20260304.0
TRV1 TS0601 by _TZE200_9xfjixap controlled by Generic Thermostat
TRV2 TS0601 by _TZE200_hvaxb2tc controlled by Better Thermostat
Better Thermostat V1.7.0
Scheduler Firmware 3.3.8
I have attached diagnostic files from each TRV at this link TRV diagnostic files