In practical application scenarios, the first one is a defrosting circuit failure: if the defrosting temperature controller fails, the heating tube may continue to work, and the dual fuses can intervene in stages. Secondly, in case of short circuit or insulation damage: When the current suddenly increases, the reset fuse will act first. If it is ineffective, the temperature fuse is used as a backup. The last issue is high environmental temperature: for instance, poor ventilation in the refrigerator causes the internal temperature to rise, and the temperature fuse directly cuts off the circuit.
The advantages for users and maintenance include reduced maintenance costs: Resettable fuses can prevent fuse replacement in non-fatal faults. Clear fault location: If the temperature fuse blows, it usually indicates a serious fault and the heating tube or control circuit needs to be repaired. The core significance of dual fuses in the heating tube circuit of refrigerators lies in: through a redundant protection mechanism, it covers both current and temperature risks, ensuring safety while balancing system availability. This design takes into account fault response speed, maintenance convenience and long-term reliability, and is a typical practice in home appliance safety engineering.
Post time: May-16-2025