[TamLam09]

We have the Carrier 9200 gas heat/cool unit (indoor). We followed the reset instructions and the fan is blowing but we're still getting cool air. What causes it to blow out only cool air and not warm? What else can we do. Again, our home is mainly gas and our oven works fine. I tested the Air Conditioner on COOL and it works, but it's so chilly I can't be sure. Seems like it's not lighting but instructions say there is NO pilot light..?

[hvac1000]

There are many different items that can cause the problem you are having. You might look to see how many blinks or flashs the circuit board is showing. Then look on the blower door and post what it says in regards to the number of flashs it is showing.

[letmetellu]

We have the Carrier 9200 gas heat/cool unit (indoor). We followed the reset instructions and the fan is blowing but we're still getting cool air. What causes it to blow out only cool air and not warm? What else can we do. Again, our home is mainly gas and our oven works fine. I tested the Air Conditioner on COOL and it works, but it's so chilly I can't be sure. Seems like it's not lighting but instructions say there is NO pilot light...??

Have you tried to watch what the furnace does as you have someone turn the thermostat up to heat? It should go through a cycle and the first part is for the vent inducer motor to start to run, this goes on for about 30 - 40 seconds, second the hot surface ignitor should start to glow, when it get a very birght, almost white hot, the gas should come on and the burners ignite, after they egnite they should stay lit, if they don't you furnace will start a new cycle and do this over and over until it goes into a lock out mode.

So if you will watch and then tell us what is happening maybe we could help you.

If this information helps you please rate my answer.