Truma Combi boiler/heater fault
We have recently suffered a fault with our boiler whilst on holiday. After 5 days of use (day and night) to keep the van warm, on moving to another site, the boiler would not start. Fault code E 89 H kept appearing and is apparently either a fan or motor or PCB fault. Whilst fault will be rectified under warranty I wondered if there is a more widespread problem with this heater. We use the van throughout the winter and obviously with day time temperatures below 10 degrees C we leave it on 24/7 and then add hot water when needed. Has anyone else had similar problems. Our van is a 2014 Coachman Pastiche 460/2 but the heater is in widespread use over many makes. Any feedback would be appreciated and may or may not reinforce my concerns that the heater is not up for the job of winter touring. Thanks everyone out there!
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We have a truma combi on our 2013 Swift, it has kept us toasty warm on many winter weekends and heated the hot water winter and summer. Only one minor problem when it would not work on electric last October and the thermal cutout had tripped, cause unknown, pushed the thermal cutout button back and has worked ever since.
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We have a Truma Combi in our 2012 M/H best system we have ever had (once we had worked out the controls) heats the van up in a few minutes on Gas or Gas+electric, once warm we just change it over to 1Kw and that's fine for the rest of the stay, turn it down
at night tho.0 -
We have a 2015 Coachman Vision with the latest 6E Truma Combi Boiler. It had always smelt of hot plastic and finally failed after 5 weeks total in service with the same fault code E 89 H. A replacement motherboard and fan was sent out by our excellent
dealer and fitted by a mobile caravan service engineer. To no avail. We reurned home from Cumbria 2 weeks ealier than expected. The boiler was totally replaced by our dealer as the existing one was not repairable. So far so good after 2 weeks in Cornwall.0 -
We have a 2015 Coachman Vision and have the same trouble it started November 2016 and has been ongoing for a year now so far truma have changed the control panel twice fitted a new mother board to the heater and changed the fan and motor.
The only thing not changed is the cable from the control panel to boiler but I've fitted a temp bypass cable and it still doesn't work so doesn't look like its the cable at fault
Any one else had this and did you fix it?
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We have a 2015 Bailey Pursuit. The combi boiler failed on our first trip out owing to a defective combustion fan/motor. This was supposedly rectified by the supplying dealer. The second time out, the system failed again and I contacted Truma who agreed to look at the combi in their workshops - the combustion fan motor was again replaced. Shortly afterwards there was another fault when the system wouldn't operate on the mains hookup - this was caused by a blown fuse. We have always found the combi to be temperamental and is is now just out of warranty. At the last service a new PCB was fitted under warranty but on our last trip we were using a 10 amp hookup for the first time with this van and noted that the EL1 setting didn't work. I suspected a faulty element and spoke to Truma, they needed a report and the van has been inspected by a service agent who agreed that there was a fault element - these are supplied as a kit and are extremely expensive. I have just got the caravan back and find that the fault is still present - and so it goes on! We may have just got a bad one but I have lost all confidence in the reliability of this product and am astonished at the eye watering cost of replacement parts.
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I have a 4 year old Swift Challenger. We simply can not rely on our Truma system. Two control panels, blown fuses, numerous fault codes. Most times I can get it going again but not this last time. Had engineer out who had reset the PCB. Working for now but who knows for how long. Will definitely not buy a caravan with a Truma system onboard ever again. Disappointed 😤
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David our new caravan has the Combi 6 installed, so far we are more than happy with it.
Being able to set to a temp is better than on the Combi 4 where it was just numbered 1 to 5. It also has 2 levels of fan so another improvement. We can set a timer (haven't got round to that yet) all in all no problems (yet)
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Just arrived in North West Scotland and the Truma Combi(E) has just come up with the same fault as 12 months ago E89H which is a fatal code. The first time was after it was 10 months old, this is now 11 months since a new PCB was fitted by the Truma workshops in Uttoxeter. There seems to be a major problem with these PCB's.
We are now about 800miles from home trying to wild camp with no heating or hot water.
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David, agree with TG...we've had the Combi 6e with CP plus in each of our last two vans....spanning four years and neither has missed a beat.
i did find this on the MMM forum .....
AlanS - 2016-12-26 7:24 PMThis code relates to :-
E 89 or (Flash codes) s,l,s,l,l,s,s,l
Error: Monitoring the current of the Combustion Air Motor
Error Information: Electronics fault
Combustion air motor fault
First Action: Replace electronic PCB
Second Action: Replace combustion air motorAs per the Truma codes guide
Alan
Looking at it further, if you have a CP+ control panel it seems more likely that you have a software problem and the controller needs a software update. As Derek has said many owners have had the same problem.
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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!!!
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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.
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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!
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Calling people ‘keyboard warriors’ is surely a form of ridicule in itself? 😠
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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.
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Agreed👍🏻, preprogrammed kit can develop a fault that can then be solved or helped by a software update. A lot of software updates in tech are for increased efficiency not primarily to update. The hardware needs physical intervention, software-not so much.
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Hi guys, found this thread and wondered if the combined years of caravanning might help.
On site, on EHU and found water wasn't hot. Checked and found the main caravan control panel off and Truma panel also off. When I went to check the fuses I noted the fridge (on 240v) was off. Battery charger working. Very confusing?
Back to main control panel and pressed the 'on' button and it came back on. Also noted the fridge had come on?
Still hadn't solved the 'why no hot water'. Had hot water set at set at 40deg previously so set temperature to 60deg. A little while later, water still cool. Had a look at the Truma 'combi boiler 4E', Nothing visually untoward so removed the half cover to expose the 12 v wires. Found all wires correct but no flashing warning lights on the PCB to show it was malfunctioning. Checked 10 amp fuse on the board which showed 12v to the board. Looked at the truma control panel that had the normal display and thought resetting might cure the fault. Reset and when init (alising) found the panel could not see the boiler. I was now shown a clock and a spanner! It then gave the fault code W255H. Phoned Truma who, as soon as I said no lights on the PCB, that the board was broken!
Sent board for repair and was told it had a faulty voltage controller. Repaired and returned and now fitted. Sadly but positively. The board is still as dead as a dodo but I now don't get a fault code!
Waiting now to hear from the repairer.
Anyone on here have the answer to the conundrum?
I also put the post on here out of frustration, because, quite frankly, for the amount of time this has been used, always on EHU, never on gas and the heater used infrequently. The van is only 3 1/2 years old. I think the quality of the unit and the cost to repair it is extraordinarily expensive for what is a pretty ordinary piece of kit. And I see they now offer a smart controller? Perhaps a little more spent on producing something reliable might make people happier?
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We have the same boiler and have had the E 89 H code appear three times during the year. On each occasion it was me that turned the heating on and each time I forgot to turn the control panel to the correct setting (EL2 for us) first.
Once we have returned home we have set caravan up on drive and never had the fault code reappear. I therefore assumed it was due to user error (me!)? Or perhaps even specific site electrics?
I've Googled the code and found numerous threads discussing motor board errors and software updates and basically concluded that this could be an intermittent fault on these boilers.
I for one shall be paying close attention to this discussion and am pleased it has been revived!
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Exactly what Club Together is for. IMHO.
We occasionally get E255H errors, usually because I had not powered the unit down properly before disconnecting the EHU cable.
Personally I always carry a spare convector heater just in case. But we shouldnt really have to. Should we ?
Perhaps if Truma had more competition in the Market their quality control would be better ?
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One issue with the Combi 4e, is the electric elements fail, particularly the one used on the 4 amp setting. Ours did - no hot water.
Setting the controls to 8 amps brings in the second element (the working one) result is hot water
Perhaps try this
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Another E 89 H fault here in our motorhome. I disconnected the EHU, disconnected the leisure battery, removed the Truma control panel and unplugged its cables, pushed the reset button on the boiler, all to no avail. After resetting the system via the control panel, the INIT.. phase left behind only two icons, the clock and spanner. We had to borrow a fan heater to stay warm.
After another hour of head scratching and internet trawling, my wife found that "fuse 12 might be implicated" and "there is a fuse 12 protecting one of the headlights". To put this theory to bed, I started the motorhome engine... both headlights were fine. However, five minutes later I noticed the control panel came back to life with a full array of icons and the fault vanished. Heating was back working!
I have no idea whether the engine restart made any difference, but I suspect not, and this won't help caravanners who don't have that option.
My gut feeling is the system needed an hour or two to reset itself, possibly while the water tank cooled down below a certain temperature perhaps?
Intermittent faults are always the hardest to find.
So, none the wiser, but a little older and greyer...
...the moral for me is to carry an emergency fan heater now.
Thanks Truma - so reliable that I have to carry two of you!
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We've been carrying a small fan heater for years. Not only is it an emergency standby but it also blows cold for those hot weather days.
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Note the Truma panel does sometimes default to Gas and its important to check before putting the heating on.
Is that perhaps an option in settings. Our gas is on all the time, except when in the storage compound. If left set on electric 1 or 2 when last switched off, it has never yet defaulted to gas. It didn't even do it when I forgot to switch on the EHU, it just threw up an error code for no electric.
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