Why does my furnace sometimes take hours to switch to second stage?Post created: 2016-01-19 Type of Equipment: Furnace Views: 55
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I have had this furnace for over 8 years now and in the last 3 years, it seems to take a long time to switch to the second stage, therefore the temperature can fluctuate 10 to 15 degrees.
On 2016-01-20 Gary wrote:
One of the most common causes of this problem is a stuck pressure switch, which will not send enough power for the correct ignition sequence. Another possibility is a problem with the furnace control board.
Because fixing the problem deals with electricity, it's usually a good ideal to have it done by a professional. If you'd like to have a contractor take a look at this, we can help you find one, here.