Carrier Furnace Blower Speed Adjustment

Most of these are on the bottom left of the control board.

Carrier furnace blower speed adjustment.

Then switch the jumper to your desired speed. Blower fan speed adjustment options fan speeds provided inside the air handler unit may be set or adjusted by the remote control for a wall mounted split system air conditioner or heat pump changing the fan wire connection between the fan on relay and the fan motor selecting a high medium or low speed right on the fan motor itself. Turn it off again for 1 3 seconds and back on. The wires are several different colors.

That should bump the fan speed up one level doing so each time will increase one speed until it cycles back to low. Your furnace shows that you have an ecm motor which is an electronically controlled motor. Low speed furnace fan blower motor will not shut off. Step 1 turn off the power source that is connected to the furnace blower.

My paperback and e book. On most control boards there will be a jumper that is marked to show that it controls the speed. Your furnace elements have a certain wattage. Your installer should know how to change speeds if he set the furnace up properly.

With no call for heat or cool turn your circulation fan to on. Step 2 carefully disconnect the wires from the coolant terminal which is located on the back of the unit. In many cases our carrier high efficiency furnaces also include technology that can produce enhanced comfort benefits and quieter operation as well. Consult your blower s owners manual to determine what your furnace blower s speed should be.

Thermostat fan control on old furnace without circuit board. Adjusting the fan speed for the furnace is not something to do just because you want it quieter or to save electricity. Current high efficiency furnaces can be rated up to 98 5 afue which can reduce utility costs over the life of the furnace. There should be low voltage speed taps on the main board for speed adjustments in cooling and heating.

Usually there will be three speeds ranging from 40 to 100 of airflow.