so that when the outdoor conditions cause a non-zero defrost power, AND the
system if off, defrost power would be set to zero.

Pdischarge is the compressor discharge pressure,
this->CompMaxDeltaP is the maximum compressor pressure rise
Pdischarge - this->CompMaxDeltaP is minimum compressor suction pressure

RefMinPe is minimum refrigerant evaporating pressure

These two terms are both lower bounds of the suction pressure

CapMinPe should be no less than both of them, so CapMinPe should be max of the
two LB, not min

the error message counter is a sum of all previous counter values
it overflows to negative
non-recurring warning keeps showing up after the overflow
use the counter, not the sum of counter in the predicate