Furnace Blower Capacitor Symptoms

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.

Furnace blower capacitor symptoms.

Fan motors can sometimes run even with a bad capacitor but hidden damage is still happening to the fan motor. The humming sounds created by the blower are indications that the capacitor has electrical problems. Before checking the capacitor make sure. 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.

Turn up the thermostat for the furnace and wait for the furnace blower to start up. Read on to know some of them. Weak or bad capacitors can cause both blower motors and condenser fan motors to run slow. If you hear that sound and it doesn t stop there s an electrical difficulty.

The most common symptom of a bad capacitor is that the motors do not run. Open the access panel. This is especially true for the compressor. 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.

A bad or faulty capacitor can exhibit many signs and symptoms. The signs symptoms of a bad capacitor on a gas furnace blower no power. If you hear a clicking sound when the capacitor kicks in that s a problem too. But with a bad capacitor your blower cannot function well and may put your family s comfort at risk.

Call your hvac heating ventilation and air conditioning professional. How to check a run capacitor.