Furnace Blower Capacitor Symptoms

If your condenser fan motor is running slow it could be a weak capacitor or a condenser fan motor where the bearings are dragging and the motor is on its way out.

Furnace blower capacitor symptoms.

Capacitor failure symptoms are sometime harder to identify without the right tools and expertise. A bad or faulty capacitor can exhibit many signs and symptoms. Read on to know some of them. Open the access panel to the furnace and listen for a relatively loud humming noise.

The signs symptoms of a bad capacitor on a gas furnace blower no power. Before checking the capacitor make sure. The most common symptom of a bad capacitor is that the motors do not run. Fan motors can sometimes run even with a bad capacitor but hidden damage is still happening to the fan motor.

If you hear that sound and it doesn t stop there s an electrical difficulty. This is especially true for the compressor. A faulty capacitor may prevent the blower from functioning at all. Turn up the thermostat for the furnace and wait for the furnace blower to start up.

But with a bad capacitor your blower cannot function well and may put your family s comfort at risk. The humming sounds created by the blower are indications that the capacitor has electrical problems. Open the access panel. Weak or bad capacitors can cause both blower motors and condenser fan motors to run slow.

A bad capacitor can cause the furnace to run too hot internally and may trip a safety switch causing the furnace to shut down temporarily. If you notice an electrical burning smell when the furnace is trying to start that may be an indicator the electrical wires supplying power to the capacitor are corroded or frayed.