เครื่องทำน้ำอุน ยี่ห้อ Cosmo อาการไฟเข้าแต่น้ำไม่ร้อน

Repairing a COSMO brand 3500-watt water heater. The symptom was that the power was on, but the water wasn't heating up. This problem can be caused by several things, but in this case, the cause was a faulty Triac. After replacing it, the water heater was working normally again. Always wear shoes for safety during repairs. This video was created for the public's benefit, for those interested in doing repairs themselves to save money...or want to learn a supplementary skill to earn extra income to support their families... However, if you find some tasks too difficult, it is recommended that you send it to a skilled technician for repair. If you find this video helpful, please subscribe, like, and share to encourage me. Thank you very much.