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Home > Service & Support > Troubleshooting > How to use the TEST button on the instant electric water heater? What function does it have?
Question: How to use the TEST button on the instant electric water heater? What function does it have?
Answer:

The TEST button is an earth leakage protection test key, specifically used to check if the unit’s earth leakage protection function works properly. It is recommended to press it once a month, with simple steps:

1、Press the TEST button; if the ELCB light flashes, the earth leakage protection function is in normal condition;

2、After the test, press the RESET button once to reset, and the unit can resume normal use.

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