感恩節快樂！請教怎麽判斷heater是什麽毛病

感恩節快樂！

 

請教，我家的spa 出了問題，熱水器不工作了。不知道是啥原因， 已經找了至少三個人修理，都沒修好，至今都不知道啥毛病。請幫我看看。

 

這個spa是in ground. 熱水器是2018，5 月生產，model 是 461059. 是Pentair 125.

 

The service heater light turned on as soon as the heater is started。

 

after shutting off the heater from the electric panel and then started the heater, sometimes it would work for a very short time and the service heater light turned on again and sometimes it would not work。

 

感謝！