Truma drain valve

[Delco Bobby]

Anyone have a convenient and easy way to flip the drain valve in the Truma Combi in a REV24 RB?

The Unit is under the sofa and I can’t get to it with my mobility issues. My wife did it last year but she is hurting from a couple of injuries and can’t help this year.

Last year we raised the sofa seat so she could reach under and stretch her arm to the valve.

I don’t see any outside access. I tried looking down behind the sofa but did not see the valve.

Thanks,

Bobby