Air-conditioning not cold: safe first checks
汽车空调不冷：安全初步检查
Separate settings, airflow and cooling faults without releasing refrigerant.
在不接触制冷剂的前提下区分设置、风量与制冷问题。
Beginner diagnosis · 10–15 min · Owner manual, cabin-filter record
1. Reset the operating conditions
Start in shade, set coldest temperature, face vents, medium fan and recirculation. Disable ECO modes that intentionally reduce cooling.
重设运行条件
在阴凉处启动，设最低温、面部出风、中等风量和内循环，关闭可能降低制冷的 ECO 模式。
2. Separate airflow from temperature
Weak airflow points to filter, blower or duct issues; strong warm airflow points to compressor, refrigerant or control diagnosis.
区分风量与温度
风量弱更像滤芯、风机或风道问题；风量强但不冷则更需检查压缩机、制冷剂或控制系统。
3. Make only visual checks
Check the user-serviceable cabin filter and look for debris at the external intake. Do not probe fans or bridge pressure switches.
只做目视检查
检查手册允许更换的空调滤芯与外部进气口杂物，不要探入风机或短接压力开关。
4. Never vent or top up blindly
Refrigerant work needs trained equipment and leak diagnosis. Stop for chemical smell, smoke, belt noise or electrical warnings.
禁止随意放气或补冷媒
制冷剂操作需要专业设备与检漏；出现化学气味、烟雾、皮带异响或电气警告时立即停止。