ERR4 — Heating element (TAN) failure or no power

What does ERR4 mean?

Similar to ERR3, this code indicates a problem with water heating. It specifically points to a burnt-out heating element (TAN) or a broken power supply to the heating element.

• Heating element (TAN) burnt out
• Power supply to the heating element is broken

Click steps to track your progress.

1. 1

   Check the heating element (TAN) with a multimeter to measure its resistance.

2. 2

   Inspect the electrical wiring that supplies power to the heating element.

3. 3

   Replace the faulty heating element or repair the wiring as needed.