中文
含义
E3 为高压开关动作。系统高压侧压力超过开关设定值导致保护停机。
常见原因
- 冷凝器散热不良
- 室外风机故障
- 制冷剂过多
- 高压开关本身故障
自助排查
- 清洗室外冷凝器
- 检查室外风机
- 检查系统压力
- 检查高压开关通断
English
Meaning
High pressure switch activated. The system high-side pressure exceeded the switch setting.
Common Causes
- Condenser poor heat dissipation
- Outdoor fan fault
- Excess refrigerant charge
- High pressure switch fault
Self-Check Steps
- Clean outdoor condenser
- Check outdoor fan
- Check system pressure
- Check high pressure switch continuity