Boat AC/Heat - Marine AIRRRRRRR

jme097jme097 Member Posts: 1,224 ✭✭✭
I was trying to switch from AC to heat this weekend and I couldn't get it to go. I have posted a picture of my control below which is the "Legacy" control. Can anyone tell me how to turn it to heat? Maybe I don't have a reversing valve whic means no heat? I am stumped. Any help would be sweet. 
Boat Name: Knot A Worry
2007 280 Rinker Express 6.2L B3


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