Testing Electric Furnace Elements

When the thermostat comes on the meter reading will jump from zero to 21 amps as the first element comes on assuming a 5 kilowatt element which is the most common.

Testing electric furnace elements.

How to diagnose electric furnaces. I show how to test fuses elements s. Testing a conventional element 1 know the resistance of the element should be this can be calculated using known values. This is a fairly simple test but one that.

This is so whether testing upper or lower heating element. Disconnect the electrical wires at the heating element terminals. Turn your oven off and let it cool if necessary. Look at the top and bottom of the oven to find your elements.

Also check the terminal ends for any rust dirt or corrosion. Check to see if the element is physically. Heating element testing duration. Remove the insulation and disconnect the electrical wire at the terminal and use either a multimeter or an ohmeter to test the electrical flow.

In this video i show how to use basic electrical troubleshooting methods to diagnose problems with electrical furnaces. After 30 to 90 seconds the current draw should jump to 42 amps. R v x v p where v is the voltage powering the element p is the power the element uses and r is the resistance an example calculation is shown in the tips section. If the water heater is hot run hot water in the building with the water heater electrical power off until water flows lukewarm or colder.

Turn the oven on and see if the heating elements glow red or orange. Inspect the burner element for any damage which can include warping bubbling or damage to the insulation sheath. If the meter needle does not move or remains at infinity the heating element is no longer working and needs to be replaced. Water heater not heating.

What you should see assuming a 6 element furnace is the following.