Why is my furnace fan not turning on?

Why is my furnace fan not turning on?

Start by turning the furnace off, turn your thermostat to “fan only,” and wait a few minutes. If you see or hear the fan turn on, your blower motor is not the culprit. If the fan does not start, you have a wiring issue (circuit breaker trips) or motor problem (circuit breaker does not trip).

Why is my furnace not coming on?

The Pilot Light (Faulty Ignition Sensor) The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite. Put the front panel back on, turn on the gas, and then turn the furnace back on. Turn up the temperature on your thermostat to see if your furnace will now fire up.

Why is my air handler not coming on?

First make sure there is power to the indoor unit and that a switch or breaker isn’t off. Some indoor units (Heat Pumps) have breakers right on the Air Handler itself. Some units have a shutoff switch on the side of the unit or an Emergency Switch located on a wall. Then make sure your air filter isn’t blocked.

What do you do when your furnace won’t turn on?

What to Do When Your Furnace Won’t Turn On

  1. Check Your Circuit Breakers. Even if you use a gas or propane furnace, some of the components run on electricity.
  2. Check Your Thermostat.
  3. Check the Drain Pan.
  4. Check Your Air Filter.
  5. Check the Pilot Light.
  6. Check Your Natural Gas or Oil Supply.

What to do if your blower motor doesn’t work?

If the blower motor doesn’t work at all, the blower motor itself must be tested first. Typically it’s done by measuring the voltage at the blower motor connector when it’s turned on.

When does a blower motor go bad or jammed?

If there is a voltage at the motor (at least 4-6 Volt at low speed and 12 Volt at high speed), but the motor doesn’t run, the motor is bad or jammed. Testing the voltage at the blower motor. If there is a voltage at the motor (at least 4-6 Volt at low speed and 12 Volt at high speed), but the motor doesn’t run, the motor is bad.

Can a blower motor relay be a problem?

One of the first symptoms of a problem with the blower motor relay is a blower motor that does not function at all. As the relay is the switch that supplies current to the blower motor, if it fails internally, then power will be cut off from the blower motor circuit, causing the motor to no longer function or blow any air from the vents.

Why does my blower fan not come on?

I have heard some people say that if you have a Honeywell Smart Valve, gas valve installed and it is defective then this can cause blower motor issues where the blower will not start.