典型的expension valve clogged

管道被冰堵死，压力高到 high pressure shuts off compressor, temperature drops, ice melts,  valve clears, pressure drops, compressor runs again.

cure: vacuum the system to extract the moisture.

所有跟帖： 

• Pressure switch，加多了没有水不结冰，但肯定过压 -soccer88- ♂ (602 bytes) () 02/12/2019 postreply 12:14:48

• 低压才28~35psi这能叫过压？ -MoonRiverMe- ♂ (0 bytes) () 02/12/2019 postreply 12:46:33

• 这个和温度有关，如果他那里很冷有可能;还有可能高压力传感器坏了。 -soccer88- ♂ (0 bytes) () 02/12/2019 postreply 12:57:53

• 高压力传感器坏了会频繁启动？ -MoonRiverMe- ♂ (317 bytes) () 02/12/2019 postreply 17:06:57

• 是的：AC system cutting on and off rapidly -soccer88- ♂ (232 bytes) () 02/12/2019 postreply 18:38:03

• will see what cause is -MoonRiverMe- ♂ (0 bytes) () 02/12/2019 postreply 19:59:45