De Dietrich MCR II 24/28 mi, change of control board, CH operation not DHW

During the storm, the control board for the de dietrich mcr / II 24/28 MI boiler burned. The repair attempt failed.
I have the same control board in appearance, probably from the model de dietrich mcr / II 24T . After connecting it, the factory settings indicate the mcr / II 24T model. Here is a comparison of stickers from both boards
The sticker from the burned disc has information about the Firmware 2.0 version. When starting the furnace, it alternately displays F and 1.2. I conclude that I have firmware version 1.2

At this moment I came to the fact that:

For CO to work dF parameter must be set to 10 (factory setting for the MCR / II 24T furnace with a sticker on the furnace housing), when I set to 6 (factory setting for the MCR / II 24/28 mi) error code 9 appears

The problem is that the DHW does not work after changing the other parameters to those adapted to my furnace:

- changing the P3 parameter from 2 to 1 gives nothing (DHW still does not work)

- Parameter P30 is set to 1, if set to 0, error code 9 pops up.


In my opinion, it looks like the firmware is for the De dietrich 24T version. If I could upload the firmware from the 24/28 version, it should be ok. I called the official de dietrich service technician and I got the information that nothing can be done and you need to buy a new CD. The question is what do you think? Is it possible to update the software? do I have to put out PLN 1300 for a new CD?

In addition to the df code, you also have to change du. If this does not help, unfortunately the new album.

dU for both furnaces is 8, so I did not change.

How do you restore factory settings you need to set df and a lot of not only 1 settings, how did you get the plate to MI, i.e. with a plate heat exchanger, check if you connected the flow sensor to a new plate, unless it is also damaged.