请教波大和有经验的地主：暖气炉达到设定温度后，有2-3次短暂重启的现象。正常吗？可能的修理思路？

现象：暖气炉在达到设定温度后停下来后一两分钟后，Blower会重新启动两三次，启动时间大约10-20秒，启动间隔大约一两分钟。启动时感觉好像炉子并没有点火或者燃烧。

已经采取的行动：

您的修暖气（1）和（2）都学习了。

温控器换过了。

Flame sensor也清洁了。

还是同样的现象。难道是炉子的自我保护机制？残留的热空气可能导致炉子自动排风？

录像：

录像1: 自动短暂重启 - 1. After reaching 67F (set 67F), the furnace restarted twice briefly and stoppped.MOV - Google Drive

录像2: 启动的全过程 - 2. Full ignite process Room 68F, Set 69F. Does this look normal.MOV - Google Drive

请教：

多次自动重启正常吗？如果不正常，可能的修理思路有哪些？本人理工男。

 

Change control board.

you meant the inducer motor ran and stopped? what is

the error code?

谢谢！

No. The blower motor restarted briefly.

Did not know how to look for error code. 

Just found a video on how to check error code. 

This furnace's control board appears no indicator lights.

 

you need to take out the cover to check

and push the door switch to start a cycle to see if the correct sequence is executed.

1. inducer motor runs

2. ignitor glows

3. flame comes on

4. blower motor activated.

the error codes are printed on the back side of the cover.

 

把control board 拿下来，肉眼检查一下有没有烧黑的，接触不良的，如果有，重新焊一下，还不行就换新的

多谢反馈！

Thanks for the feedback!