An open limit switch does not mean a bad limit switch. It means there is another problem causing it to open. Call a proffessional to have your furnace checked, it could be a number of things causing your problem.
The no DIY in the statement at the top of this page means no Do It Yourself, we cannot help you to do it yourself. There are very good reasons why. You need to find someone (a professional) to find what is wrong and fix it for you.
Last edited by mrs reb77; 12-08-2007 at 01:13 AM.
Do not argue with an idiot. He will drag you down to his level and beat you with experience.
Can we talk in this forum? Because No DIy?
I'm new in HVAC, but in Control almost 10. I'm not sure that my problem is solved.
I did go pt by pt. at the control board and also Tstat...(I'm guessing it may have corrode b/w the sensors and connector. I clean and put them back) Retest...the Temp set pt 3 degree higher than house T... the furnace now is running normal...cross the finger.