Truma Combi boiler/heater fault

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.

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.

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.

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?

 

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.

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) 

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. 

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 PM

This 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 motor

As 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.
Alan