Try remove the thermostat and see what happens...

來源: 冬前 於 2023-02-25 07:18:13 [] [舊帖] [給我悄悄話] 閱讀數 : (226 bytes)
回答: 空調冷熱同時工作是什麽原因 由 慘白的天使 於 2023-02-24 19:30:07

Without thermostat connected, both heating and cooling should be off.  If none is on, change thermostat.  If heating/cooling or both on, mostly control board problem, replacement board costs about $100.

請您先登陸，再發跟帖！