When there is a problem in the freezer’s defrost sensor system,

it is possible for the E1 error to be displayed on the White House refrigerator’s display.

To resolve this issue, you should first check the connections of the sensor and the main board.

If no errors or issues are found in the connections,

it is likely that the sensor itself is faulty.

In this case, it is advisable to replace the sensor.

To do so, make sure the refrigerator is unplugged.

Then, open the defective sensor and carefully disconnect its connections.

Next, place the new sensor in its position and reconnect the connections.

Finally, turn on the refrigerator and check the performance of the new sensor.

If the E1 error persists or if any other problem persists,

it is best to contact an authorized repair technician or seek further information from the refrigerator manufacturer

or their customer service department.