Testing Electric Furnace Elements

After 30 to 90 seconds the current draw should jump to 42 amps.

Testing electric furnace elements.

How to diagnose electric furnaces. Remove the insulation and disconnect the electrical wire at the terminal and use either a multimeter or an ohmeter to test the electrical flow. Disconnect the electrical wires at the heating element terminals. I show how to test fuses elements s.

If the meter needle does not move or remains at infinity the heating element is no longer working and needs to be replaced. 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. Testing a conventional element 1 know the resistance of the element should be this can be calculated using known values.

Performing basic checks 1. Turn your oven off and let it cool if necessary. This is so whether testing upper or lower heating element. Inspect the burner element for any damage which can include warping bubbling or damage to the insulation sheath.

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. Check fuses element sequencers thermostats and transformer duration. Look at the top and bottom of the oven to find your elements. Heating element testing duration.

What you should see assuming a 6 element furnace is the following. If you find some clean the terminal ends with a fine sandpaper or a piece of steel wool. In this video i show how to use basic electrical troubleshooting methods to diagnose problems with electrical furnaces. This is a fairly simple test but one that.

Water heater not heating.