Hi everyone, We have a 2017 350 Sundancer with the heat/ac system. The unit has been somewhat sporadic, but was working overall until last night. The heat came on and got up to about 66 degrees and then wouldn't go any higher. There was a steady discharge water flow while working. When I tried to turn it on this morning, neither the heat, nor AC will work and the unit flashes the "HP" (high pressure) code. There is now no water coming out of the discharge either. Any thoughts on what to do here (if simple) will be much appreciated. If not simple, thoughts are still appreciated.