Truma Combi boiler/heater fault

Hi, we have a 2015 Swift Kudos 530FB fitted with the Truma CBE UK 403 combi boiler, which is controlled by the Truma CP plus panel. We have been having the E89H code on and off for a few months. Sometimes everything works OK, and sometimes it does not work at all. I have tried reseting the CP+, and the Combi boiler. I have checked the 2 10a slow blow fuses, and both the combustion fan and the pcb cooling fan seem to be OK, in that the fan blades will turn freely, so mechanically at least, they are sound. Many pundits have told me that it's the PCB board, whilst others will swear that it's the combustion fan. My van is now out of warranty for the appliances, so whatever is causing the problem, it's going to hurt my wallet!

So, in desparation, I contacted Truma for help a couple of days ago, and have just received the following message:

"Thank you for your email, could you please let me know the software version of the CP+ panel, you can find this by scrolling round to the spanner symbol press and then scroll round to index press again and you will get a number that starts with a C and then if you scroll again there will be a code that starts with a H, if you can get me both numbers I can check whether it needs a software update".

I have, in the last hour sent back the codes requested, which are: C1.04.00, and H5.02.00. So it looks as though it's going to be a software update, I shudder to think what the cost for this will be. If it can be done from a PC, I'm pretty sure that I could do it myself, but it remains to be seen. I will post again when I have a resolution, showers comprising kettles, buckets, and jugs isn't my idea of fun!!!

I'm a bit confused by this. Easily done 😂 If it has been working since 2015, until recently, why should a software update be needed? Surely that might only be required if something on the system had been updated.

I'm wondering why someone would find and revive a 3 1/2 year old post.  

I'm amazed at HOW anyone could find a 3 1/2 yr old post on this forum ... 😉

True MM.

Reviving it could possibly help someone, as from my experience, a Truma Combi boiler is a 'frail' piece of kit, that will be giving someone sleepless (and possibly cold) nights somewhere on a campsite as we speak.

H'mmm, well, what can I say? I will start with some additional information which may help some keyboard warriors understand. At my whits end, I just googled the problem, and this thread came up, I didn't seek it out, but I thought, Ah, The Caravan Club, having been a club member for 35 years, someone will surely be able to help, but alas, there are more pensive comments about why someone would want to  revive an old post! Are we a community that offers helpful advice, or do we prefer ridicule?

It really is very disappointing, but, for those who posted positive comments, thank you. For those that are not so positive, Truma have asked me to send the (out of warranty CP+) to them, and they will update the firmware without charge. Why would they do that if they didn't think it might solve the problem? Just saying!

Calling people ‘keyboard warriors’ is surely a form of ridicule in itself? 😠

For those that are not so positive, Truma have asked me to send the (out of warranty CP+) to them, and they will update the firmware without charge. Why would they do that if they didn't think it might solve the problem? Just saying!

No idea. It just that we have a Truma Combi on our van and I was interested to know if they had indicated why it should be necessary.

The user and all related content has been Deleted User

I did see anyone being ridiculed .... just surprise of another old thread being resurected.🤔

Starting your own new thread would have been better. 😊