power off HVAC, wait a few minutes, power on.

本帖於 2021-07-09 08:39:13 時間, 由普通用戶 fuz 編輯
回答: system 放到off , 風扇還是轉。AnnYuan2021-07-09 06:01:09

the blower relay need to be clean or  replaced

https://amperite.com/blog/blower-motor-relay/

 

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