问个furnace的问题

来源: sweetptt 于 2012-12-20 12:24:30 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (150 bytes)

有furnace，点火1分半钟，熄火（伴随啪啪两声），再过30秒，风扇停，再过1分种，点火电热丝发红，10秒后点火。循环往复。屋里温度68，设置72。什么问题？

所有跟帖： 

• Was it good before? Sounds like not enough return airflow. -borisg- ♀ 给 borisg 发送悄悄话 borisg 的博客首页 (0 bytes) () 12/20/2012 postreply 12:52:37

• tenants said it is always like that. today is cold, the heat is -sweetptt- ♂ 给 sweetptt 发送悄悄话 sweetptt 的博客首页 (0 bytes) () 12/20/2012 postreply 12:57:10

• Then it is either return clogged by junk or the vent layout is f -borisg- ♀ 给 borisg 发送悄悄话 borisg 的博客首页 (0 bytes) () 12/20/2012 postreply 13:07:51

• 听起来像热传感器不灵了，一个细细的金属棒，卸下来 -David2005- ♂ 给 David2005 发送悄悄话 (31 bytes) () 12/20/2012 postreply 14:00:09

• yeah，try clean the flame sensor first -地主老头儿- ♂ 给 地主老头儿 发送悄悄话 (0 bytes) () 12/20/2012 postreply 14:28:22

• upper limit switch is fault. -jy101- ♂ 给 jy101 发送悄悄话 jy101 的博客首页 (0 bytes) () 12/20/2012 postreply 17:01:38

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