Air Handler Blower Motor Running Slow

When the ac runs without the fan circulating air it can eventually lead to the evaporator coils freezing over.

Air handler blower motor running slow.

Blower motor failure the next most common problem that can occur with an air handler is a failure of a blower motor whether it be the blower motor or something else that causes the blower motor to fail. You can do this at the transformer checking for a fuse in the low voltage circuit. The fan won t start even though the ac is on. Multi speed blower motors are standard on almost all modern hvac air handlers.

Are you sure you got the rotation on the new motor correct. Check the motor bushings for play. Get the new album up beat on itunes. If running backwards there are 2 wires on the motor to switch.

It could be a bad relay control board run capacitor or the blower motor itself. Let it come to a slow stop and look at the blades. Or if you happen to know how to use an esr meter then check the capacitor that way. It could also be the blower wheel.

When the fan doesn t start even though the ac is turned on it can be a clear sign that there s a fault with the motor. If the power is fine check to see if there is proper voltage. This is a heat pumpthe blower motor for the air handler is running slow. The run capacitor for the blower should be checked with a capacitance meter and replaced if it is below 90 of the rated value.

The number i gave you was for the air handler hvac technician airheatman hvac technician replied 3 years ago model will be on front of air handler top section then model you are providing is for the ac coil. If ok your motor is probably a 3 speed and one of the internal windings shorted causing slow speed. Kung fu maintenance shows slow start indoor fan blower hvac air conditioner heater quick fix maintenance repair video. If the motor is getting full voltage while running probably best to get a new motor.

The air conditioner might be set to low which means the fan turns slowly and produces minimal air circulation which could be a problem when a room is stiflingly hot. Should be scooping the air. Switching the air speed can be accomplished easily with a few simple tools. Assuming you have one of the most common psc types and not some other type like an ecm slip induction etc then a weak run capacitor for the blower motor can cause this problem.

A press to the fan speed button increases the fan speed to the next level and yet another press to the button advances it even further. Changing the speed of the air handler to a slower setting can reduce allergens and alter the interior humidity level in the home which can be beneficial in the winter when the heat is being used. Also check the run capacitor may be shorted or just bad.