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I've got a Vaillant VC GB 242 EH boiler and a Siemens RWB9 programmer, I've had problems with my system for a while with the diverter valve motor burning out, when I've checked voltages to the valve they seem to be wrong. In order to figure this out I've gone through all the wiring again...

Hi hope someone can help? I've got a problem with my 3 way valve, I've changed it twice and both times the actuator has failed after a few months. I assume that there is a problem with the voltages going to it. I've measured the voltages and copied them below, any advice would be welcome...