Immergas error error 37 - fixing the thermal contact of the heatsink helped

Hello,
I also managed to repair the E37 error code problem. (Victrix 26)
I replaced the electrolytic capacitor C58 and the boiler is working normally again.
New: 1uF 450V 105°C Jamicon
Original: 1 uF 400V 85°C ELNA
I hope that this replacement actually solved the problem and the error does not occur again.
I think the root cause of the error is: The C58 capacitor is very close to the heatsink, which is hot. The heat of the heatsink reduced the life of the condenser. When I removed the plastic cover of the panel, I felt that the whole unit was slightly warm.

I strongly recommend that you try replacing the C58 capacitor before you buy the new expensive control panel. (It's worth a try.)
The old capacitor should be cut with a small cutting-nippers. The new capacitor can be soldered onto the cut leg relatively easily. In this way, the panel does not have to be unscrewed and turned over for soldering.
I hope that everybody will be able to fix the Immergas E37 error code phenomenon.
If you have any questions, I will try to help.

Our 10-year-old Immergas also got Err 37 today... I didn`t have a 1uF 400V electrolyte, so I replaced it temporarily with a 10uF 450V one. The furnace is working for now, but tomorrow I will buy the right element and solder it. Anyway, this electrolyte seems to do the trick.

For me, replacing the capacitor helped with error E37 in the Immergas EXA 24 boiler C58 . The old one only had 60pF instead of 1uF.
After the replacement, the furnace started and works :-)

Hello,
Yesterday in my 13 year old VICTRIX X2 24KW V.2011 error E37 popped up quickly on the internet I immediately found your posts on this topic This morning to the shop soldering iron tin, capacitors.... to start with I replaced this C58 1uf/400V at 105 degrees I mounted the board the boiler is running
Thank you to all who have commented here
Regards

Hello the joy was short-lived with the removal of the E37 error today I popped up with the E04 error has anyone perhaps had such an error ?

Hi, from the description of the E 37 error, it seems that it could relate to faults on the motherboard or on the devices connected to it, i.e. the detector or the controller. I don't know anything at all about electronics, but I decided to check the latter option. I started to unscrew the furnace housing and became interested in the small box underneath, which has two cables: in my case, a black one from the temperature sensor from the water tank and a white one from the controller located in the hallway. On the lid of the box are shown the wiring diagrams of these devices. And interestingly, I saw a resistor, which according to the diagram was supposed to be connected to inputs 36 and 37 together with the temperature sensor wires, was lying loose on the bottom of the box. On its "legs" were visible traces of screw pressure from the mounting strip. Furthermore, I am puzzled by the black wire coming out of input 40, with also visible screw pressure marks from the trim. My question is whether (I made it provisional for the photo) this is how I should connect the resistor (maybe the other way round) and whether, in your opinion, according to the diagram, the black wire hanging down should be bridged to input 41. If I get it right and it's ok, then great, if nevertheless the E37 error still appears, then I'll get on with the board.
.

@juveniaolsztyn
In your case, this is how it is supposed to be!
That resistor is supposed to be removed (disconnected), and that bridge is supposed to be disconnected too.
Just take a look at the original instructions in the installer section, you'll know why, and that this is correct.

P.S. I can see from the photo that you did, however, fuse your fingers, and connect this resistor.
And how - do you now have hot water ? .

Thanks, of course not. As I've mentioned I don't know much about electronics, but I do like screwing screws. Of course everything is back in its place, i.e. the resistor on the bottom of the box. Thanks, I will now get down to the C58 capacitor as you suggest. Thanks kind regards.

I respect that. Thanks to this topic, I repaired the combi boiler in my house. My combi boiler is Immergas Eolo Star.

At my place, in the Immergas Victrix 12 TT ERP (2018 year) C58 was fine, for that the capacitor in the filter circuit on the power supply lost capacitance, C50 was 12n instead of 330nF. After replacing it with 330nF/310V X2, the boiler has been running flawlessly for a few days, whereas before it was popping E37 after just a few hours.

.

Hello
I have replaced the C58 with a neighbour and unfortunately the error still pops up and the cooker does not heat water. Is there anyone from Poznan or nearby who could diagnose and repair ?

After two weeks of flawless operation, the boiler stopped switching on, alternating between E20 and E37, which could no longer be cleared.

It turned out that C58 1µF/400V had lost its capacitance. After replacement it has been working for another week.
There was a power cut on the same day, maybe the surge when switching it on finished it off, as it still had 0.9µF 2 weeks earlier.

The conclusion is to use extra protection and overvoltage/anti-interference filters on the power supply.