E1 燃烧故障 E2 风压差开关故障 E3 风机故障 E5 采暖进水NTC故障 E6 采暖回水NTC故障 E7 供暖出水NTC E8 伪火故障 重启 EP 系统水压故障 缺水,水泵抱死 ,压力开关损坏 |
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