Tower 2 port zone valve

[DebbieDoodah]

Is it ok for me to keep the switch at 'manual' all the time on the valve?
Underfloor heating only works when I do that even though the thermostat is showing the little flame

 

[kevplumb]

if you have to keep it locked on "man" to work it's either shot of wired wrong

and no it wont hurt

 

[DebbieDoodah]

Thank you!