Has anyone run across a problem of the low pressure control on a Rheem RPNL (R-410) heatpump shutting off the compressor before it should in heat mode. The pressure switch is set at 25psi which is about-18F. In my opinion this is way too high for a heatpump that will be running at an OAT of -20. This coulped with the fact that at startup the suction pressure will go lower that the outside air for awhile as the fan gets up to speed. If this happens 3 times the board locks it out and stops the compressor.