1. 机组刚开机，不运转
1. unit just started, not running
检查机组正常，通电后开机延迟3分钟启动；运行中人为突然关闭再启动时延迟3分钟启动；
Check the unit is normal, after the power switch, delay 3 minutes to start; in operation suddenly shut down, then start 3 minutes delay start;
排除：正常现象。
Excluded: normal phenomenon.
2. 主机吸热翅片结霜
2. host endothermic fin frosting
检查除霜探头故障或（测量）冷媒含量是否缺少，或毛细管微堵、脏堵、冰堵。
Check the failure of the defrost probe, or (measurement) whether the refrigerant content is lacking, or capillary micro plugging, dirty plugging, ice jam.
排除：更换除霜探头；充注同型号冷媒，必要时抽真空后再进行充注操作，清理毛细管。
Exclude: replace defrost probe; charge the same type of refrigerant, vacuum after necessary and then filling operation, cleaning capillary.
3. 风机不转压缩机运行
3. fan does not rotate compressor operation
检查风机与主板的插头是否松动；冷媒量过少，
Check whether the plug of fan and motherboard is loose and the refrigerant is too small,
排除：打开主机的上盖插紧风机的接头；充注同型号冷媒，必要时抽真空后再进行充注操作。
Exclusion: open the upper cover of the main engine, plug the fan joint; charge the same type of refrigerant, vacuum when necessary, and then charge operation.
4. 主机运行，不制热
4. main engine running without heating
检查机组冷媒含量是否缺少，安装时换热器内的空气是否排尽
Check whether the refrigerant content of the unit is not enough, and whether the air in the heat exchanger is exhausted at the time of installation
排除：安装时水箱换热器的空气未排尽，就启动运行，充注同型号冷媒，必须抽真空后再进行充注操作。
Exclusion: when the air in the water tank heat exchanger is not discharged, it will start operation, charging the same type of refrigerant, vacuum pumping must be carried out after charging operation.
5. 主机开机后，一直不运行
The 5. main engine has not run since it is switched on
检查进电源线相序与主机相序是否一致；进电源通电是否正常，电源故障
Check whether the power supply line phase sequence and the host phase sequence are consistent; whether the power supply is energized or not, and the power failure
排除：按照“左零右火”标准顺序连接，进电源电压测量重新连接或更换匹配的电源；查明原因解决电源故障。
Exclusion: according to the "left zero right fire" standard sequence connection, into the power supply voltage measurement re connect or replace the matching power supply; identify the reason to solve the power failure.
6. 主机制冷，不制热
6. main engine cooling, not heating
检查控制，显示器的四通阀设置，
Check control, four way valve setting of display,
排除：进入显示器的F37将“0”设置转换为“1”，让四通阀通电即可解决。
Excluded: F37 into the display will be "0" set to "1", so that the four way valve power can be resolved.
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