Furnace Blower Capacitor Symptoms

Open the access panel to the furnace and listen for a relatively loud humming noise.

Furnace blower capacitor symptoms.

Fan motors can sometimes run even with a bad capacitor but hidden damage is still happening to the fan motor. 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. Weak or bad capacitors can cause both blower motors and condenser fan motors to run slow. Capacitor failure symptoms are sometime harder to identify without the right tools and expertise.

A faulty capacitor may prevent the blower from functioning at all. If you hear a clicking sound when the capacitor kicks in that s a problem too. Open the access panel. The most common symptom of a bad capacitor is that the motors do not run.

But with a bad capacitor your blower cannot function well and may put your family s comfort at risk. Before checking the capacitor make sure. If you hear that sound and it doesn t stop there s an electrical difficulty. Read on to know some of them.

The signs symptoms of a bad capacitor on a gas furnace blower no power. 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. The humming sounds created by the blower are indications that the capacitor has electrical problems. A bad or faulty capacitor can exhibit many signs and symptoms.

Call your hvac heating ventilation and air conditioning professional. Turn up the thermostat for the furnace and wait for the furnace blower to start up.