System was tripped on high pressure lockout. Reset system and ran it, Heatpump was running in heat mode. Found that the reversing valve was not getting energized. Checked voltage at C to O got 24v, checked where reversing valve plugged into board and only got 14v bypassed at plug ins and connected reversing valve wires to C and O at board so system will still function as should. Left system in cool and changed filters