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temperature and point names in the board

The dishwasher hardly get warm, and sometimes it got temperature error from the sensor, and this time it wasn't warm but just cold water inside.

After opening I can't finde the termperature sensor but i have access to the board and there I see some point (most related to relays) that i would like to know what they mean:

IV , SV ,DV ,1/2 ,DP , WP

There is also a point called FAN but I assume that there is a fan for the drying stage)

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Hi @alcrepaircafe

What is the make and model number of the dishwasher?

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it is a supermarket rebranded but i can find out the real brand or manufactor.

The board is a POWER CARD DW-8

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@alcrepaircafe

What is the make and model number that the supermarket uses for the dishwasher?

Did you check the back of the machine to see if the original manufacturer has a label there somewhere? Look on some of the major parts as well, e.g. pumps and motors

Searching for the power board model number gives no results.

Guessing what the designations could mean may lead you astray but perhaps the following might be it but who knows as this is a total guess

IV = inlet valve

SV = ?

DV = Drain valve

1/2 = ?

DP = drain pump

WP = wash pump

Have you measured the resistance value of the heater element?

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