Carrier FX4DNF037 heater not blowing warm air

Old 10-28-19, 10:54 PM
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Carrier FX4DNF037 heater not blowing warm air

This unit is only 3 years old. What are some things I can check to see what's wrong before having to make an expensive service call? Unit turns on, but air is not warm.
​​​​​​ Thank you!
Old 10-29-19, 07:34 PM
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Welcome to the forums.

That is the model number for a basic air handler.
So.... do you have a heat pump system ? With or without backup electric heat ?
or is that air handler set up as an electric furnace ?

If it has any type of electric heat coils...... it should be written near the ID tag.
Sometimes it's a choice that is checked off on the ID tag.

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