Arendo Electric Kettle Wasserkocher Temperature sensor Error E3 fix Replacement

Escrito Por: Martin Kuklinski

Comentários: 1

Arendo Electric Kettle Wasserkocher Temperature sensor Error E3 fix Replacement

Dificuldade

Moderate

Passos

Tempo necessário

20 minutes

Introdução

Passo 1

This problem may present as an incorrectly high temperature displayed. If temperature read out exceeds a certain safety limit (120*C), the kettle will only display E3 and not turn on otherwise
In my case, the defective part was a plug connector in the connects the temperature sensor to the main board. The plug was corroded after use of mild acid for Calc removal. This increased electrical resistance leading to the incorrect temperature readout

Passo 2

The plug in question is shown at the bottom of this photo with two black wires. In mild cases, cleaning of the connectors should be sufficient. In my case, corrosion was severe and a replacement plug was not at hand.
In this case, I removed the main board from its plastic cover (one screw next to the silicone covered relay switch), then soldered the wires directly to the circuit board.

Passo 3

The following steps are not required for this repair, but serve for informational purposes only.
The temperature sensor and power socket are attached to the base of the water kettle by three M3 Phillips screws. At the top and bottom of the power connector, there are two bimetal temperature switches, which are purely physical/mechanical safety cutoffs and not related to this sensor problem.

Passo 4

In case you felt bothered by the loud beeping noise of the kettle (which cannot be completely turned off in the menu), the volume can easily be reduced by covering the hole of the beeper element (circle). A solid layer of sticky tape will reduce noise level significantly

My kettle would not stop boiling for quite a while even though it was already steaming a lot. Thanks to this how-to here I was able to repair it. In my case the temperature sensor was not making proper contact to the inside of the kette. I fixed it with a just a little bit of MX4 thermal paste usually used for CPU mounting in computers.
I checked with a grill thermometer, the sensor is now reading perfect temperatures again.
For anyone wondering where the sensor is (the howto above isn't that clear...): it's at the end of the white cable between the blue and red cable that connect to the heating element. It's secured with a separate metal plate and screw. You can see it in step 3 picture 2!

optimalo - 04/02/26