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Diagnostic problems
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When troubleshooting, understand you are working with potentially lethal voltages. If you do not have the ability to do these operations safely, do not attempt them.
Electric furnace diagnostic problems below
The furnace below has an overheat problem. See if you can find the problem.
Here is the answer
Below we have a problem with one element not working. See if you can find the problem.
Below is the answer to the problem.
More coming