Some manufactures say that the only way to charge a HP when ambient temps are too low to run in cooling is to recover and weigh in the name plate charge plus adj for line set length. That's a cop out IMO. Others will give guide lines but, recommend that the charge be re checked in cooling when it warms up.

In heating your evaporating temp will typically be in the ball park of 20 degrees below ambient on a clean coil. Hi side pressures will of course vary with the conditions. Typical hi side condensing temp will run in the 90-105 ball park after stabilization. It is best to follow manufactures recommendations when they are available. Lacking those, I charge by pressure when it is too cold for AC. Taking a sub cooling reading will give useful info but, I don't charge by it unless the manufacture specifies it. Depending on the equipment, super heat may be difficult to check in heating mode. On a trane split it should be easy to ck superheat.

I do not know what your indoor DB was or what your indoor airflow was. With what you have posted, I suspect that you may be overcharged. Compare your readings to the service facts. Also check your air flow. Your problem is likely airflow or over charge related.

 

At 65 out, those pressures likely are good in heating. Expect some high numbers when heating in warm weather. I wouldn't think you were overcharged just looking at them. 13 sub cool could be a RCH high but depends upon how long the lineset.

 

If be checking indoor airflow, filter, blower wheel, indoor coil ect.

 

Assuming the service literature is still with the OD unit, it will include "pressure curve" diagrams, to evaluate operating pressures at different ID & OD temps.

 

Quite a few of them start their cooling charts at 65 degrees F as well, which was the OP's ambient temp......

 

as jtrammel said check airflow , and yes on the v/s units the airflow increases when the heat strips engage

 

Thanks everyone. I am sure its not an airflow issue though. Fairly sure Im either over charged or restriction...13 degrees subcooling in cooling(40-50ft line set)....Im going to go back on a cooler day a check it out, I was only doing maintenance that day. thanks again for the replies

 

one thing that will also cause high head in heat is return air grills in the ceiling .check you return air temp at unit because sometimes it will be much higher than what the thermostat shows ,also check your dip switch settings