Unfavorable frost is low density,fluffy,snow-like frost that quickly blocks coil airflow resulting in rapid deterioration in coil performance compared with other frost types.

• “不良”结霜是一种低密度、蓬松的、雪状霜,与其他结霜的类型相比,“不良”结霜会更快地减少空气流通面积,盘管换热能力迅速下降。