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摘要： 分析了该住户风机盘管在供暖初期冻裂的原因空气空气能量回收系统新风送风温度低于0 ℃，指出为防止送风温度过低导致盘管冻裂，应避免在住宅供暖设计中采用将新风直接送入热水盘管再热的方式。 关键词 ：北方地区,新风能量回收系统,盘管冻裂 Cause analysis for fan?coil frosting cracking in a fresh air energy recovery system user in northern residence By Cao Yang★ and Liu Gang Abstract ：Analyses the reason for fan?coil cracking in the early heating period when the fresh air supply temperature of ERV system is lower than 0 ℃, and points out that in order to prevent fan?coil frosting cracking caused by the low supply air temperature, reheating fresh air by the hot water coil in residential building heating design should be avoided to adopt. Keywords ：northern area, fresh air energy recovery system， fan?coil frosting cracking ★National Center for Quality Supervision and Inspection of Air Conditioning Equipment, Beijing, China