Check your furnace blower fan.
American standard fan not working.
If so then the fan not coming on will trigger a high temp cut out switch.
No indoor fan fan not running fan not blowing no airflow.
After ruling out all of the simple problems above the most likely cause of a furnace not blowing air is a problem with the blower fan itself which if you remember is the fan that circulates your house s air over the heated coils.
If the relay board isn t working properly the fan might not run.
We will go over a few things to check before calling for service.
1 bad fan motor 2 bad capacitor 3 bad control board or fan relay if a separate relay is involved.
First make sure there is power to the indoor unit and that a switch or breaker isn t off.
Check to see if your gas or electricity has been turned off.
It s possible that it is simply not getting power or that the capacitor is dead but the condenser fan motor itself is.
However you want to word it if your indoor fan isn t working it could be several things.
If this door is not secure or is missing the unit may not run appropriately.
Was any work done on your fuel or electricity lines recently.
Check that your thermostat is set to cooling or heating mode and not set to off make sure the thermostat is set to the right setting and temperature.
Before replacing the board make sure you check more commonly defective parts particularly the fan motor capacitor and the fan motor itself.
If this air is not cool it is likely that the coils on your furnace have frozen.
Open and close the blower door.
Check the pilot light.
Move your hand around the american standard furnace to see if there is any air circulating.
Relay boards are often misdiagnosed.
Purpose of the fan center relay.
Stopping the furnace and the third attempt will show up in the blinking light.
If this keeps occurring you will need to contact your dealer or a repairman.
A non running fan can be one of three things.
This will reset any lockout issues on your furnace.
The purpose of the fan center relay is to provide a low voltage control 24 volts to control a relay that can be used to control two speed blower motors and auxiliary circuits in heating or cooling equipment many of the newer furnaces do not have fan center relays but many of the older furnaces and some new furnaces still do.
Is your ac fan not working or spinning.
The relay board provides voltage to many components of the air conditioner including the fan motor.
Check the blower door.
Do you have a new or newly remodeled home.