WHY IS IT BLOWING COLD AIRPost created: 2012-12-26 Type of Equipment: Furnace Views: 140
This question was created on the page: https://www.furnacecompare.com/furnaces/carrier/58mcb.html.
On 2012-12-26 JB wrote:
The first thing to do is take a look at the LED error/fault display and see if it is indicating a code. You can go here to learn more about the LED display: http://www.docs.hvacpartners.com/idc/groups/public/documents/techlit/58mcb-4sm.pdf
Beyond this it is hard to say precisely why the furnace is blowing cold air. It may be that there is an issue with the thermostat or a range of problems with the furnace that is preventing it from heating.
Once you have found the LED display and determined the error code that will provide you with enough information to provide an HVAC tech with a sense of what the problem may be. It is also possible that once you have determined the error code and checked your owner's manual that you may be able to do a reset or something similar to get it up and going again.
However, most furnace issues are not good DIY candidates so don't try to fix the problem yourself. It can be dangerous and you may make it worse.
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.