Conquest 90 Furnace Not Working

I have a conquest 90 furnace that is not heating.

Conquest 90 furnace not working. The gtua series features five models with input rates from 75 000 to 120 000 btuh all with afue ratings of 92 percent. When turned on the draft and ain blower run immediately but heat never comes on. When turned on the draft and ain blower run immediately but heat never comes on. Usually goes through a 1 2 minute startup sequence when working pro read more.

So my question is. What s happening to my furnace. I have a conquest 90 furnace that is not heating. Since 2012 high efficiency condensing furnaces with afue ratings of at least 90 have been increasingly popular and they require different troubleshooting techniques.

A forced air gas furnace whether conventional or high efficiency is an appliance that does the following. At only 34 1 2 in height the furnace is ideal for renovations and replacements fitting in virtually any space where a furnace was previously installed including basements and utility closets. 95 single stage gas furnace. The comfortmax control adjusts the flow of gas to the furnace for maximum fuel efficiency and comfort using an integrated two stage control board the.

If the hsi does not work there will be no glow then you will hear a hissing sound for 4 7 seconds. I know there are flash codes to indicate what is the problem with the furnace. This is the trial for ignition. Two heat exchangers make this one of the most efficient furnaces on the market today.

The furnace would switch on for a few seconds then switch off. Then the hissing will stop. Because the hsi did not warm the burners did not light and the flame was not proven. When cycling the inducer should start first then the hsi should glow.

Full text article here. The conquest 90 max is a high efficiency two stage gas furnace. What does two flashes mean.