Whirlpool HAH 7000BB Induction Hob: Error F40 on Right Side Heaters - Possible Causes & Solutions

Hello,
I have a Whirlpool HAH 7000BB induction hob. The problem is with the right side of the board (2 heaters) which are not working. Left side works fine. Error F40 is displayed on the displays of both fields. Has anyone encountered such an error code and what can it mean?

F‐40 Power control board failure
Check that the cable between the User Interface and the power control board is good and properly connected. Problem persists‐ Replace the power control board.

Hello. I have the same error F40 and same model of the induction cooker. What kind of payment is shown in the photo. Which one is the power control board.

Has someone managed to solve this problem? The fields on the right also show F40.

Barthezz1976 wrote:

Has someone managed to solve this problem?

This is not a Space Shuttle.
All you need is a meter and a little bit of headache to check the voltage - at the beginning it's enough and you have to start somewhere.
It costs nothing and it's fun to repair.

Moderated By TONI_2003:

? Quote selectively or not at all when you reply after the person quoted!

When the CPU crashes, the meter will do nothing, and it looks like it, because the board becomes stupid after turning on. Turns the right fan on at full power and turns it off after a while. NTC sensors OK, the voltage coming from the left module that goes through the control panel to the right damaged module is also good. Sometimes the same error has completely different glitches.

Barthezz1976 wrote:

When the CPU crashes, the meter will do nothing

How is it not the fault of the MCU? In Whirlpool, a damaged MCU is really a "white crow".

Moderated By TONI_2003:

? Quote selectively or not at all when you reply after the person quoted!

After all, 99% of the F47 is a burnt CPU and everything around it. Correct me if I am wrong. I do not write about unconfigured modules, because they will also show F47, but you can program them by entering the SC given on the sticker.

I'm not going to lead anyone out of this mistake. The lion's share of these modules was salvageable and repairable.
Now it's a bit more difficult because there are problems with obtaining the MCU.

Piotr2608 wrote:

I'm not going to lead anyone out of this mistake. The lion's share of these modules was salvageable and repairable.
Now it's a bit more difficult because there are problems with obtaining the MCU.

Rather, most of it is shit. Unless you want to replace most of the damaged diodes and transistors on the CPU board, including the CPU. When I find photos, I'll show you.
Here, the only thing that pays off to repair is igbt and gate control.

Piotr2608 wrote:

F - 40 Power control board failure
Check that the cable between the User Interface and the power control board is good and properly connected. Problem persists- Replace the power control board.

In short, a compact thermal protection system.
No thanks for correcting you.

Hi Barthezz1976, I have a similar problem (F40)

>>In short, a compact thermal protection system
Is it related to the temperature sensor located on the heatsink, near the 4 IGBTs ??
Please elaborate
TIA

If, after switching on, the board immediately starts the fan and the red diode on the controller board is flashing, the heat sink NTC may be shorted. To check it, it is enough to carefully shorten its legs with a screwdriver, which causes such reactions. Although the NTC error seems to have a different number. I have - "F-34 - NTC Heat sink short".

The F-40 is described simply as "IPC damaged - replace IPC".

I currently have an F40 error on the right fields of the Teka IR641 HAH-6000AB-1 board and I have already eliminated both the heat sink NTC fault, the communication error (works fine), faulty voltages (all except 5v slightly lower but rather normal), relay error, incorrect programming of the control panel .... I suspect that the source of my error F40 is on the MCU board because after transferring it to another induction module, the error "moved" with it ....

Defective CPU.

Well, I more or less figured it out, because I'm stubborn.
I made sure that the failure is on the top plate by simply swapping (soldering) the left and right plates. The error again went to the plate.
Then I tried to freeze and heat various elements on the plate and when heating the center of the plate near the processor, the error disappeared for a while. For 15 seconds. Then it always came back. I sold it with a hot air and no changes (I had no hope, February was pretty good on the eye). In the end, tiring me, I came to the fact that the F-40 error changed into the F-47 - so now I have no communication, but it would be nothing ...
I know that there are error numbers dedicated to a processor or EEPROM error and I was hoping for failures other than the procek, but probably not every failure can be classified so accurately by the system.
The board goes for scrap or for parts, because modules for this model are not available. You can find the used, similar ones, but the upper plate will not translate, because it fell, and I do not know how much a similar version of the software would have to be for it to work ...

Thanks for the response.

Quote:

Damaged CPU.

Not necessarily.
I will add that I created such an error in my stove by desoldering shorted transistors of the bridge of one of the burners. They broke down in the B25 cottage and led to the devastation of the pre-meter C25 (one of its contacts was welded, even though it was turned off and could not be turned on, one phase was still intact). Surprisingly, the melts are intact in the oven.
I am currently using a partially functional stove, but it gives an F40 error on the output page.
The cause of firing of both transistors was the loss of capacity of the 0.68uF series capacitor.
So my hardware is confirmation that this is a power stage error. It stops being displayed after turning on the heating on a functional part.

There is a relay on the board which is most likely damaged! The relay is 250v/17a. I replaced it with an Omron 250v/16a (I had one available). I replaced it and everything is ok!