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

I had a problem with the E37 error in the Immergas Victrix X 24 furnace. It helped to drill the aluminum rivet connecting the switching diode with the heat sink, apply thin thermal paste to the contact of these elements and screw it again with a screw and nut.
I've fixed a few cold solder joints before but that didn't eliminate error 37, but it's worth doing.
Is another thread describing that "replacing the disc helped" but closed so I can't add anything there

PS Unfortunately, today after a few days the error appeared again. I'm still looking for the cause. Maybe the capacitors are worn out? How to measure the capacitance of electrolytic capacitors?

So I ended up giving the board to a friend from the forum who deals with it professionally. You can also find his announcement about fixing the e37 error on the Internet.
Fortunately, I didn't do it myself, because the problem was not where I suspected. I decided that it's not worth learning from my mistakes just to fix one of my albums.
The service was done properly and efficiently. The furnace is now running without an error signaling.

Hello
And what was the cause of error 37 after repair?

kmarek70 wrote:

Hello
And what was the cause of error 37 after repair?

Unfortunately, the "repairers" do not want to reveal this ... after all, they earn money ... but if someone would like to try to repair it themselves, I upload photos of the repaired board with marked places that, in my opinion, were resoldered (recognition "by eye" after shiny new solders and elements that were matted on my board ... Note!!! I got a working board in exchange for my damaged one with an E37 error, so there is no certainty that the one that was working before the repair had the same problem).

Thanks for the info.
Regards

I got this error too. Only that I had a board replaced with a new one a year ago. In the old and in the new this error appears.

Anyone got anything else?? For me, again, there is no error but it does not fire, which the first time only makes a few attempts and for example 5 times it succeeds

IMMERGAS VICTRIX X 24 2I - after 10 years of exemplary work!!! And I also got the legendary "ERR 37" ... After turning off the plug and restarting 1 day of work and error37 again. I turned off the plug and after 30 min. I turned on - then turned on the chimney sweep mode (press the RESET button for 10 seconds - until the snowman flashes) then turn it off with the button and after turning it on it surprised for 1 night ... In the morning again err37. It's time for a trip to the magician with the CD, because no one has made a tutorial anywhere - how to overcome it ... PLN 200 for repair. - it's not worth risking digging and replacing the disc for PLN 1,100. Regards.

Hello everyone.
Has anyone managed to work this error out? What is most often 'dropping' and should be replaced on the disc? General info in the manual what the e37 is responsible for is poorly precise. The immergas service technician claims that 90% of it is cold February. Most of the solders on the board have been corrected, still the same error.
Maybe someone who has already figured it out and will share the magical knowledge will tell. I don't feel like sending the CD for a few days and staying without heating and hot water in the winter.
Dear forum users, please share this valuable knowledge for the New Year. Not all people with this problem practice DIY and have the willingness and skills to tinker, so the clients for magicians are unlikely to decrease...

Hello. I also had the same problem... and gave up. I went to Rzeszów and after waiting, I came back with an efficient plate ... The guy did not show how and what he did ... The second mc boiler works perfectly. This is the most important. Regards.

Thanks for the answer. If I lived closer, I probably would too. I can see the furnace going crazy. The heating temperature is sometimes up, sometimes down, and other times it does not heat at all. And so alternately with error e37.
Gentlemen, who are embracing the subject of this error, maybe one of you works in the vicinity of the 3rd city?

Today, with my CD, I'm going to a friend who has been in the electronics of notebooks, tablets, etc. for 30 years. I think he can handle the problem and I'll let you know what and how and why. That's what this forum is for, to share knowledge.

Endrjusss wrote:

Maybe someone who has already figured it out and will share the magical knowledge will tell.

The E37 error is caused by too low supply voltage or more often by a fault in the viper53-based switching power supply. This power supply should output voltages of approx. 28 V (C55) and 240 V (C58). The controller will spit out the E37 error if the latter voltage at the output of the power supply drops below 197 V.

The board was repaired by a friend from the @endriue forum - I found the description as below

https://www.elektroda.pl/rtvforum/topic3856685.html#20092685

The board is still working.

Hello, my Vitrix 24 got error 37, in addition, sometimes it did not heat the water in the tank. The capacitance of the capacitors is not critical, but it is recommended that they be 105 degree capacitors and branded ones, e.g. Rubicon. The following have been replaced:

C50 -330nf/305V to 220nf/275V X2 MKP
C83-10uf/50V to 22uf/63V
C58-1uf/400V to 4.7uf/400V
C72-22uf/63V to 22uf/63V

Marked in red in the photo.

I also replaced the electrolytic capacitors first. Everything worked perfectly fine after that... for a couple of days and then the error came back. It's not the capacitors that are causing the problem. At least they weren't on my record.

A week of trouble-free operation of the furnace has passed, so it was a shot at 10. Repairers are offered to buy an RLC element tester, once available at the electrode or in online stores for several dozen zlotys. This greatly facilitates and speeds up the repair.
Other faults that I removed were a leaking 3-way valve. Unfortunately, nothing could be adjusted from the existing o-rings. I used cut silicone sealing tabs similar to a computer power plug.

Thank you for the advice given. Unfortunately, it was Friday and I ordered a service technician and he replaced the board. Today I sat down to it because I already had capacitors to replace. In my case, the problem turned out to be the C58 capacitor, which instead of 1uF had some nF of an undefined value (checked with the dm3058 Rigol). As I started to desolder the capacitors to check, the others still had their values (I also replaced C83 and C72 with better brands - 105C and branded electrolytes). In conclusion, only the C58 turned out to be a problem. Even those 22uF/400V kept parameters within 2% - better than new ones.

I'll keep the repaired one for a week and put a new one back in because it's registered with Immergas. I had no problems with it before, on Friday morning suddenly E20 / E37. I regret a bit that I just didn't try to fix it, but scared by the vision of no heating / water for a week, I was in a hurry to replace it.

If someone from the Wrocław area needs a plate, my stove is exa 28, but from the photos it is all the same plates for other models too.

Could you please provide all the data on this C58 capacitor? I would like to order it without opening and disassembling the oven. I'm away from home and my wife informs me about error E37. I'd like to replace it as soon as I get back. Thank you in advance.

Post nr 15.
C50 -330nf/305V on 220nf/275V X2 MKP
C83-10uf/50V na 22uf/63V
C58-1uf/400V na 4.7uf/400V
C72-22uf/63V na 22uf/63V

I understand correctly that the components have been replaced with others with different parameters?
For example, C58 with 1uf changed to 4.7uf?

Added after 7 [minutes]:

Will this one be ok?

https://www.tme.eu/pl/details/pf2g010mnn0511u/tht-electrolytic-capacitors/elite/

Buy this and this and see. Penny matters and work for only 5 minutes more.

Ok, thanks for the info. So with the error e37, this C58 should do the trick?

Be proud if you succeeded.

Furman1234 wrote:

Buy this and this and see. Penny matters and work for only 5 minutes more.

The first value is original, the second I inserted from the elements I had at hand and it also works. It's important that they are at the right voltage and as good as branded, because in 0.5 years you will exchange again how you will give cheap inventions.

Gentlemen, I have the same problem, E-37, can anyone from the Cieszyn area or Silesia solve the problem? I'll be happy to take the disc to repair it if someone finds some time.

I managed to make the disc myself, replacing the C58, as previously reported by my colleagues, worked, everything works as before without any problems. Thank you for your help.

And it got me. Err 37 appeared. So far, turning it back on has helped.
Immergas Victrix x 12. It's been running for 8 years.
Do you have any experience? Could this error occur incidentally and it will be quiet for a long time, or will the failure get worse and it's already worth making an appointment for motherboard repair?

Wrap the capacitor and the next 8 years sleep peacefully in a warm house.

In my case (E37 error, but the boiler switched on a little time later), the expert told me that the problem was not the capacitors, but the optocoupler, which monitors the power supply. He changed it and everything works correctly, no E37 error.