Tuya smart thermostat Vaillant Turbo Tec

Tuya smart thermostat Vaillant Turbo Tec

Tuya smart thermostat Vaillant Turbo Tec

Hello, I've bought the thermostat in the picture and have connected the 3 wires from my old thermostat. The thermostat turned on but it won't turn on the boiler. I have boiler board photo attached. Please help.

by Milenkoste

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