請教一下空調可以啟動冷氣卻無法turn on heating是怎麽回事

HVAC cooling沒有問題，但heating無法啟動。請修空調的看了扔下一句要換motor就趕下家去做事了。 想請教一下懂的大俠們，motor壞了的話不是應該冷氣熱氣都啟動不了嗎？請問為什麽冷氣沒問題，熱氣卻不能turn on呢？

所有跟帖： 

• Is your heating system a gas furnace? -pegasus0- ♂ (299 bytes) () 10/08/2023 postreply 13:27:54

• 謝謝熱心回複，明天來修的時候我問問 -chuqi- ♂ (0 bytes) () 10/08/2023 postreply 15:52:23

• 千萬別問，問了人家知道你是一竅不通，要狠狠宰你。 -檸檬椰子汁- ♂ (0 bytes) () 10/08/2023 postreply 16:11:57

• 謝謝檸檬提醒，他今天已經給我報價了，parts+labor $482 -chuqi- ♂ (120 bytes) () 10/08/2023 postreply 17:22:57

• Inducer motor like pegasus0 said. Safety feature. If exhaust -RomaVacation- ♂ (202 bytes) () 10/08/2023 postreply 18:37:33

• 換了個gas valve，你還不知道自己的機器是gas heat還是electric heat？ -檸檬椰子汁- ♂ (0 bytes) () 10/08/2023 postreply 18:40:48

• Depend on your local weather and how old is your HVAC system -pegasus0- ♂ (1095 bytes) () 10/08/2023 postreply 19:42:26

• Some inducer motor has capacitors and they could go bad too. -RomaVacation- ♂ (73 bytes) () 10/08/2023 postreply 22:08:16

• 花十塊錢換Capacitor,就可以了。與外麵的AC一樣，電容易壞。motor 不轉，電容換一個 -Simiguy- ♂ (0 bytes) () 10/09/2023 postreply 09:41:00