There is a loud whistling noise in the outdoor unit near what seems to be coming from the Reversing Valve. I'm hoping to get some info from Heat Pump Techs at this site. My Ambient Temp outside to day was 30 degreesFaren. Suction Pressure at the compressor was about 30 lbs.. Vapor Line Pressure/Temp going indoors in the heating mode was 150lb at 188degrees. Liquid Lind press/temp coming from Indoor Unit in the heating mode was 110 lb at 70 degrees. Now here is my questions. Inlet to Reversing Valve from Outddor Coil temp is 25 degrees, Outlet from Reversing Valve (Suction Line to compresssor) was 70 degrees. This did not seem to be normal to have a large temp rise going to compressor. Discharge line temp from compressor (6") was 230 degrees. Can someone give me some input please...?