Truma Combi 4 Help Please

davidathomas42 said:
Managed to get the cover off to the fan. Its dusty as suspected but not insanely. I gave it a good few spins by hand then switched the unit on. Still getting same error code. s s l s - l l l s which is code 46 still.

I have put back the original switch's and wire on the wall now so its not getting silly with stuff all over. I have pulled the power wires from it and going to leave it until 4pm now to totally drain any residual power.

I cant see a reset button anywhere on the unit like the later ones that have it next to the led light. I cant find anything on youtube either for one. Does anyone know if there is a hidden one anywhere?

Past that I am again at my limit

Oh I did try a fully charged leisure battery direct to the terminals too for power and got the same error code so that rules out the negative earth part of the checklist.

View attachment 572759Those fan blades look pretty choked up to me ! I wouldn't mind betting that the fan housing is also full of debris !
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davidathomas42 I'm interested in knowing if you solved your Truma boiler problem. I put my hands up - selfish reasons; I'm installing the same boiler at the moment in my van conversion!
 
jfly57 said:
davidathomas42 I'm interested in knowing if you solved your Truma boiler problem. I put my hands up - selfish reasons; I'm installing the same boiler at the moment in my van conversion!
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I agree with jfly57 when you do get the issue resolved,
please let the funsters know what the problem was,
we can all learn from other funsters experiences
 
jfly57 said:
davidathomas42 I'm interested in knowing if you solved your Truma boiler problem. I put my hands up - selfish reasons; I'm installing the same boiler at the moment in my van conversion!
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Ill absolutely let the thread know when sorted.

Current situation is I fully exhausted all ideas to reset and fix it on the drive. I have been back to my dealer and he said he is going to contact Truma for next steps which will likely be a PCB replacement. Ill be honest im not confidant that is the issue but it its not that then what else can it be?

I am going to give it that try and then if it fails just buy a new 2022 unit to fit fresh as I have 37k into my Motorhome now and I am not getting enjoyment from it like I should. I also have other potentially costly issues with the van (auto gearbox playing up and failed glow plugs) I then plan to pass that bill back to the dealer. This has been going on since late November and I am at the point where enough is enough. If its not a priority fix for them ill make it a cost for them.
 
davidathomas42 so sorry to hear of your continuing saga; that would drive anyone to a serious level of distraction, to put it mildly. I do sincerely hope your dealer and Truma will sort the issue for you.

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I wouldn't bother with the stress of the dealers. Just take or post the boards to A&R electronics. They'll test them for you and at least you can rule them out if no problems found.
Is it a Comfortmatic box - if so what are the symptoms?
 
dunnah01 said:
I wouldn't bother with the stress of the dealers. Just take or post the boards to A&R electronics. They'll test them for you and at least you can rule them out if no problems found.
Is it a Comfortmatic box - if so what are the symptoms?
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Its a 2001 Ducato with the semi auto box. Not sure if thats knows as the comformatic or not. Its basically a manual without a clutch.... well it has one but it does it for you.

Driving steady its perfect. But if you accelerate hard (pulling away) it can flash the screen saying check gearbox and a red light on the dash flash's

If your asking for a lot of torque (say going up a steep hill) it can just flick itself into neutral. You then have to shift to the neutral position and back to drive for it to re engage.

I did 320 miles over new year and drove super steady and it didn't miss a beat. But on the way back last 30miles I was on some steep hills and decided to try to drive normal and it straight away was having a sh&t fit and threw into neutral.

I read a lot of things (sensors) can affect it and current known issues are glow plugs need replacing and the external temperature probe doesn't work. Not sure if this can affect the gearbox's computer but i'm going to get them sorted first in the hope it might help.

Just need this bloody van squared away. I love the layout and its got all the toys I want. Just want to be able to use it properly now.
 
davidathomas42 said:
Its a 2001 Ducato with the semi auto box. Not sure if thats knows as the comformatic or not. Its basically a manual without a clutch.... well it has one but it does it for you.

Driving steady its perfect. But if you accelerate hard (pulling away) it can flash the screen saying check gearbox and a red light on the dash flash's

If your asking for a lot of torque (say going up a steep hill) it can just flick itself into neutral. You then have to shift to the neutral position and back to drive for it to re engage.

I did 320 miles over new year and drove super steady and it didn't miss a beat. But on the way back last 30miles I was on some steep hills and decided to try to drive normal and it straight away was having a sh&t fit and threw into neutral.

I read a lot of things (sensors) can affect it and current known issues are glow plugs need replacing and the external temperature probe doesn't work. Not sure if this can affect the gearbox's computer but i'm going to get them sorted first in the hope it might help.

Just need this bloody van squared away. I love the layout and its got all the toys I want. Just want to be able to use it properly now.
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2001 sounds a bit to early for the comfortmatic which I think was only introduced about 2007 although the symptoms do sound very similar to the comfortmatic issues. The Comfortmatic issues can be solved with MES but not sure about the earlier gearbox.
 
dunnah01 said:
2001 sounds a bit to early for the comfortmatic which I think was only introduced about 2007 although the symptoms do sound very similar to the comfortmatic issues. The Comfortmatic issues can be solved with MES but not sure about the earlier gearbox.
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Sorry that was 2011. Finger slipped
 
davidathomas42 said:
Sorry that was 2011. Finger slipped
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If you can get hold of a copy of MultiECUScan or know somebody that has a copy you can try the following:

Undertake a 'Delete Statistical Data'
Then run the 'Clutch self-calibration enable' sequence - this requires a full throttle pull away for 300 yds then turn off, wait 10 secs and turn back - on so takes a bit of faith. This resets the Comfortmatic actuation system and hopefully resolve the problem for another 20+ thousand miles.

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dunnah01 said:
If you can get hold of a copy of MultiECUScan or know somebody that has a copy you can try the following:

Undertake a 'Delete Statistical Data'
Then run the 'Clutch self-calibration enable' sequence - this requires a full throttle pull away for 300 yds then turn off, wait 10 secs and turn back - on so takes a bit of faith. This resets the Comfortmatic actuation system and hopefully resolve the problem for another 20+ thousand miles.
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Sorry that read a bit like stereo instructions.

Do a who and a what?

I have an OBD reader and laptop software I sometimes use to delete nuisance trouble codes that throw a light on. I got it free with a car randomly. Been very handy.

I have not plugged it in to the Motorhome yet as nothing is staying on light wise. Might be worth a look to see if it's stored an error code and try to read it.

Whats the part about doing a Fast & Furious 0-60 launch though?
 
davidathomas42 said:
Sorry that read a bit like stereo instructions.

Do a who and a what?

I have an OBD reader and laptop software I sometimes use to delete nuisance trouble codes that throw a light on. I got it free with a car randomly. Been very handy.

I have not plugged it in to the Motorhome yet as nothing is staying on light wise. Might be worth a look to see if it's stored an error code and try to read it.

Whats the part about doing a Fast & Furious 0-60 launch though?
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It sounds like you may have a basic generic code reader which will talk to the engine ECU and maybe a few other sensors to monitor temps and speed etc.
MultiECUScan (often just called MES) is a Fiat (and Alfa, Lancia, Chrysler & Suzuki stablemates) specific software package. It allows access to far more of the vehicles control units, sensors and actuators as well as the ability to undertake tests of most of the components. One of the modules it can talk to and test is the Comfortmatic control module (it's actually a Magneti Marelli Selespeed CFC348 if you want to get nerdy). The software will read any codes and give you Fiat specific error messages. Unfortunately, any errors are a bit of a lottery with intermittent faults although with the Comfortmatic they will usually be a hint that the actuator for the gearbox is out of it's permitted range (measured as a rogue voltage). Most dealers will spend months changing bits n bobs, then getting the Fiat experts in and then pulling the motorhome apart to replace the whole Comformatic mechanism and often the gearbox which runs to about £10k and then the warranty struggle starts. This solves the problem by resetting all the gearbox parameter to zero (the control module actually counts how many gear changes are made as well as tons of other counters).
The procedure I've outlined above will do pretty much the same thing but will take about 10 minutes in MES. A registered copy of MES with all the necessary leads etc you could ever need is only about £125 which will let your laptop talk to all the Fiat modules via the OBD port, very similar to what you already have but probably with much more functionality. The procedures are all explained in the software so it is really easy to use although the 'Clutch self-calibration enable' sequence' is a bit like a CTRL+ALT+DEL on the computer so needs a bit of nerve. There's half a dozen other resets which may as well be done prior to big hitter but these only take a few moments each.
As with any electronic solution it's not guaranteed to work in every case but for £125 and 10 minutes it's way less stressful than £10k and 6 months of hassle.
 
Re the truma issue, have you taken the pcb out and checked to see if there are any dry solder joints. Re the gearbox issue, as a retired paramedic we had this issue many times. If you can locate your nearest ambulance workshop and have a friendly chat with the workshop manager they “may” be able to help. The ambo’s were mainly done at the dealers but they maybe able to advise you. The issue was so bad that they never ordered anymore with the comformatic box.
 
Can highly recommend A&R Electronics at Cannock, very helpful and knowledgeable whereas Truma just dismissed my older unit as unrepairable.
Turned out my fault was simple"finger trouble" but saved me a lot of worry. Quick Service too.
Let us know how it turns out
Mike
 
Dealer has ordered a new board for it. Waiting for that to come in. Monday it’s off to a Fiat truck repair place to try and sort the gearbox issue and glow plugs.

In 2 days it will be 10 weeks since I reported this problem :mad:

If the board doesn’t fix it then it’s having a new unit. Either they supply and fit or I do and send them the sodding bill. This is taking the piss now.
 
jezport said:
If you take it into the truma service centre in Stone, Staffs they will sort it first attempt.
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I took my previous MH to Truma in Derby when I had an issue with that and a usless dealer and it took them 5 seconds to diagnose the issue (old unit on a new controller likley swapped out by the previous owner as it was a year old van)

Spoken to Truma already and booked in for mid Feb as they are super busy it seems. I can see me just throwing £2k at buying one and having it fitted somewhere else at this rate and just posting them the bill.
 
Hi there, I had problems with 230v not getting to boiler, it was the mains voltage fuse blown which is located under the the large rear cover. It can be difficult to get at depending where the boiler is located in the vehicle. Undo the top 2 screws and the cover is released and unclipped from the bottom. Obviously turn off the mains supply whilst doing this.
Sorry if someone has already suggested this as I’ve not read all the replies.
 
tuckerstravel said:
Hi there, I had problems with 230v not getting to boiler, it was the mains voltage fuse blown which is located under the the large rear cover. It can be difficult to get at depending where the boiler is located in the vehicle. Undo the top 2 screws and the cover is released and unclipped from the bottom. Obviously turn off the mains supply whilst doing this.
Sorry if someone has already suggested this as I’ve not read all the replies.
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Thanks for the reply. I’ve checked the 240v fuse. The 12v. The signal wires. Control switches replaced. Voltage. Amperage. Took it fully off power. M
Done all sorts I and others can think of. Fully exhausted all ideas.

I know it would take Truma seconds to sort it is the annoying thing. Just taking forever to get in there.

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davidathomas42 said:
Thanks for the reply. I’ve checked the 240v fuse. The 12v. The signal wires. Control switches replaced. Voltage. Amperage. Took it fully off power. M
Done all sorts I and others can think of. Fully exhausted all ideas.
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You forgot the most important one! "I put the kettle on"!

Must admit I feel your frustration, it's "the not knowing what's wrong with it" \ "what to try next" rather than it's "the not working" that's the issue!:swear2:
 
davidathomas42 said:
This normally upsets people to hear.

But I have never tried Tea or Coffee......... Ever :eek:
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But I meant you were boiling water to wash your dirty laundry!:rolleyes:

1643384886042.png

Fingers crossed your sorted soon!🤞
 
Lenny HB said:
Jesus how do you get going in the morning? I'm a grumpy old sod until I've had a decent cup of coffee.
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The Auld Yin old-mo was saying to me that you need to start drinking it earlier!:whistle2::rofl:

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I’m guessing not a paying member and used free quota. Shame not to know.
 
dunnah01 said:
I wouldn't bother with the stress of the dealers. Just take or post the boards to A&R electronics. They'll test them for you and at least you can rule them out if no problems found.
Is it a Comfortmatic box - if so what are the symptoms?
Click to expand...
I second that suggestion:
We were out on a jaunt around Yorkshire and suffered a complete failure of hot water and heating on our 8 year old Truma 6E combi boiler which had given us no trouble up until then.

The error E6H displayed was tracked down via a flashing error code on the main board to point at the combustion fan module. On inspection we found thick dust on the fan circuit board which was cleaned to no avail.

After much searching online for Truma approved dealers and finding out the cost of a replacement combustion fan module (circa £320), I came across a company in Cannock offering to test and repair Truma boards via a postal service.

After bravely removing 3 torx screws and unplugging the lead, the module was sent off via parcel post, having paid £95 + return postage up front.

To my amazement, two days later, the module was delivered back from A & R Electronic Developments Ltd with an invoice detailing the components replaced on the circuit board. I refitted the unit this afternoon and the boiler groaned and buzzed into life again. Hot water and heating restored.
 
Landroid said:
I second that suggestion:
We were out on a jaunt around Yorkshire and suffered a complete failure of hot water and heating on our 8 year old Truma 6E combi boiler which had given us no trouble up until then.

The error E6H displayed was tracked down via a flashing error code on the main board to point at the combustion fan module. On inspection we found thick dust on the fan circuit board which was cleaned to no avail.

After much searching online for Truma approved dealers and finding out the cost of a replacement combustion fan module (circa £320), I came across a company in Cannock offering to test and repair Truma boards via a postal service.

After bravely removing 3 torx screws and unplugging the lead, the module was sent off via parcel post, having paid £95 + return postage up front.

To my amazement, two days later, the module was delivered back from A & R Electronic Developments Ltd with an invoice detailing the components replaced on the circuit board. I refitted the unit this afternoon and the boiler groaned and buzzed into life again. Hot water and heating restored.
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Sweet. Nice when stuff works out.

I ended up with a new unit. Truma inspected mine and multiple things were wrong all down to lack of care the tech said. Gotta clean the dust and fluff away.

I paid around £1050 for a replacement recon unit then sent the bill to the dealers (Timberland) who didn’t pay until I sent court CCJ screen shots.

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