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When I turn the thermostat up and ask for ignition nothing happens

Post created: 2013-05-27 Type of Equipment: Furnace Views: 397

This question was created on the page: https://www.furnacecompare.com/furnaces/trane/xe90.html.

My XE-90 Trane was installed Dec. 1998.

I just noticed it a couple of days ago when it turned cold again the furnace didn't kick on as usual. It has run fine all winter.

I have checked my breaker box because I did have some breakers off. I checked the switch beside the furnace for power, it is ok. I just looked it over for anything unusual and didn't find anything out of place.

It was under water 5 or 6 years ago and had a control module(I don't know exactly) replaced. I dug some dirt over the outside line a few days ago, could I have loosened a piece of rust that is obstructing the line now? It just sets there like it isn't trying to do anything.

On 2013-05-27 JB wrote:

I doubt it was the dirt on the line unless for some reason you really dinged it.

This can be a lot of things from the thermostat malfunctioning to a dirty filter (it is the end of winter so maybe it needs to be changes) to a faulty pressure switch and so on. The first step is to look and see if you are getting an error code. This is either an LED display or set of flashing lights on the control board on the furnace. The code they indicate correlates to a chart in your owner manual or perhaps pasted on the inside of the furnace cover. This will provide a pretty good hint of what the problem could be.

If you know how to change and or clean the filter you should also check it to see if it needs cleaning or changing. Of course, before accessing the filter make sure you shut power off to the furnace.

Since some breakers have been thrown it may be a short or some similar electrical problem.

Hopefully all that happened is that after being shut down for a while it simply needs a reset switch to be toggled or a clean filter.

At any rate, check the filter and the error codes. More than likely, though, you will need to bring in a certified HVAC tech to properly diagnose and fix the problem.

To keep legal happy, let me just say that I am not an HVAC contractor, and you should never even look at your furnace without having a qualified, liability accepting HVAC contractor present.  To keep sales happy, let me just say that you can find an HVAC contractor that's happy to take your money here: http://www.furnacecompare.com/perl/find_contractors.pl.

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