咨询关于FURNACE点不着火。

老孔雀

今天中午，突然觉着很凉，一看温度是12.8度，忙下去检查炉子，没反应，重新断电后炉子开始启动，发现没有火苗，仔细观察后，待煤气阀打开后，用火机点燃，就正常运转了。
目前看来是点火系统出了问题，说明书也找不到了，哪位有经验修过类似的问题的吗？谢谢赐教了。

温度

更换集成电路主板

老孔雀

有那么麻烦吗？我打开看了看，就是灰尘多了点，我觉着就是点火的系统出了问题，明天把那个元器件拆下来，如果能买到新的换一个看看。

温度

点火的系统受集成电路主板控制。

老孔雀

看来明天只能先查查保险丝是否正常了。不管是继电器变压器还是别的元器件出了问题，的确都是在主板上，从自己手动点火后一切正常来看，好像也不是太大的毛病。
如果自己搞不定，大家是直接给厂家打电话，还是在电话黄页上找维护炉子的公司？

AASTAR

主板没有问题的。
! a& Q& A& n9 N: ]5 s. V就是点火器的问题。

我没有太多修家用锅炉的经验，因为在QC，一般用电锅炉。我的所有经验都来自于工业锅炉、焚化炉。
修锅炉，我一般找欧文。电话是780-9538736.他水平比较高，价格也可以的。

老孔雀

谢谢AASTAR以及温度，我已经查出故障所在来了，通到点火器的120V电压正常，点火器的中间已经烧糊虽然并没断裂，通电后发现这个点火器没有颜色变化（按理说应该变红）也不烫手。明天看看能不能买到这个元器件吧。

老孔雀

这是从网上查到的相关常识，对于原理还是有帮助的，希望对以后出此故障的人有帮助。
There could be several reasons your furnace is not lighting. Let's assume you have a hot surface ignitor. When the thermostat calls for heat a set of contacts in the t'stat close allowing 24 volts to be input to the control board. This tells the board to begin a sequence for ignition. First voltage is applied to the hot surface ignitor. The ignitor heats up for about 30 seconds until it glows almost white hot. You should be able to see the glow as it is doing this. After the 30 seconds or so has elapsed the control board then sends 24 volts to the gas valve allowing it to open and send gas to the burners. The high temperature of the ignitor causes the gas to combust. Close by will be a slender metal rod which sticks directly into the flame. 24 volts of AC power is being applied to that rod. When flame is present, the gases of combustion act as what is called a rectifier, changing the AC power to DC power and allowing a very small current of milliamps to flow through the flame to ground. The control board "sees" the milliamps of current and "knows" that there is a flame. The control board then deenergizes the ignitor and begins a time delay before bringing the indoor fan on and moving air. The delay is to allow the heat exchanger to warm up so you don't get a cold draft from your vents at first. If the rod, known as the flame sensor does not "see" the flame the control board begins another ignition sequence. Most units will attempt to light 3 or more times and then go into a lockout condition. You can reset a lockout condition by turning off power to the furnace for about 30 seconds and then restoring it. You flame sensor has a ceramic insulator on one end. If the ceramic insulator is cracked, the rod will fail to sense the flame. If the gas valve has a bad coil, it will not open and no flame will be established. If the control board fails, it might not energize the hot surface ignitor, or it might not energize the gas valve, or it might not recognize that a flame exists. If you are familiar with the use of a multimeter, it is not difficult to diagnose the problem. If you are not familiar with one you will need to have a qualified service technician check things out. I will be glad to assist in any way I can. Feel free to contact me if you need to.

老孔雀

购买配件换上后，问题解决，谢谢各位。

harvey

我家furnace也不能start, 听到啪啪响, 但是不点火, 好象是一样的问题.
- L; a! w* p! r请问楼主在哪里买的配件. 谢谢

健康营养站

我家furnace也不能start, 听到啪啪响, 但是不点火, 好象是一样的问题.
请问楼主在哪里买的配件. 谢谢
: W+ Z9 d. Y( j3 M2 ?  lharvey 发表于 2011-10-21 09:31

$ W1 N1 s( z' x4 n. D( S# [. t同问,
* L3 z4 h  O& C$ B& v$ A# }
! k5 Q% X% b( _- I2 r9 o你换了什么配件?

gun

楼主请别保守秘密，给同胞们说说，权当是做好事，大家会记住你的，先谢了！

AASTAR

如果您看这个帖子都不知道最后是什么，为了您的安全，请您找专业人士！

martins

谢谢AASTAR以及温度，我已经查出故障所在来了，通到点火器的120V电压正常，点火器的中间已经烧糊虽然并没断裂，通电后发现这个点火器没有颜色变化（按理说应该变红）也不烫手。明天看看能不能买到这个元器件吧。
% U% N; h  a9 h老孔雀 发表于 2011-3-17 23:24

过去的老炉子里面是一个常燃的小火苗（PILOT FLAME）。所以老的炉子不会有这个问题，
1 ^2 D( D; w9 I( f0 i不过节能上要差。现在东西功能越来越高，可靠性却在下降。就象房子，以前的老房都是真材实料，
" y7 G$ y4 l" C5 f6 ?5 R可在节能，环保和布局上就不如新房。

移民电工

#41-413, $49.50