求助：中央空调不供暖是怎么回事

tw1998

可能是点火片坏了。可以DIY。

引用第10楼tw1998于2012-01-31 10:32发表的  :
可能是点火片坏了。可以DIY。

应测电阻值确定。

Hot Surface Igniter Will Not Glow
1)  Open Pressure Switch is Bad
2)  or Limit Or Flame Rollout Switch Is Open
3)  or Hot Surface Ignitor Failure
  Hot Surface Igniters (HSI) will heat themselves up to 1800º and above. It may develop tiny difficult to detect cracks that can cause failure. Handle with care the HSI is very fragile. Do not touch the surface. Only handle by the wires or its base. Sometimes a white area will develop around a crack. If this is seen, replace the HSI. An ohmmeter (a meter used to measure resistance) can be used to find other hard to see cracks. The HSI can be checked in the furnace. Simply unplug it and ohm out the wires.

45 to 95 ohms – Good

110 ohms and above – Cracked

At room temperature, the resistance range should be 45 to 90 ohms. A resistance higher than 110 ohms indicates a crack. If a crack is detected, replace the HSI. If 115-volt is applied to the HSI and it does not glow; replace the HSI.

老夫

找老郭，问老郭！

tw1998

谢谢各位。暖气已经修好。之前是请专业公司上门做了诊断，最后还是自己动手修好的，附上照片。

哈哈，我家的暖气前几天也不供暖了，看自动控制器，一行小字正提醒电池电力不太足，换了新电池调来开去还是没能启动，正想打电话叫人来修，LG突然想起前几天他到阁楼上看到一个象电灯开关似的小开关不知是控制哪里的，就顺手把它给关了（多此一举），于是就爬上阁楼把那个小开关一打开，立即暖气轰鸣！