Truma Combi 4E error code E212H

R

Rapides

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Aug 18, 2017
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Location
SK10
Funster No
50,054
MH
Coachbuilt
My Truma Combi 4E has taken to throwing up E212H errors, sometimes fleetingly preceded by E112H, at random intervals when running on gas. Can't predict when it's going to happen, but when it does it's always as the boiler's firing up.
The only explanation of the error codes in the manual that feels like it could possibly apply relates to a gas pressure regulation fault.
Van is 18 months old, gas regulator is DuoControl CS and I've only ever run on Calor propane. Gas bottles are full, gas hob is working OK.

Does anyone have real-world experience of resolving these errors, please? Otherwise any suggestions for fault-finding would be really appreciated before I book another warranty trip to a dealer.
Thanks in advance.
 
Where are you getting the error codes from? I thought the 4e used flashing codes on the pcb to give error codes, eg sssl ssss (with s = short and l=long).
 
Gellyneck said:
Where are you getting the error codes from? I thought the 4e used flashing codes on the pcb to give error codes, eg sssl ssss (with s = short and l=long).
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From the Truma Combi CP Plus control panel.
 
Truma U.K. are very good on the phone as discovered by Richie very recently :whistle:
01283 587960

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Rapides said:
Thanks. I think they're contactable via email, too, so I'll give that a go.
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I know he didn’t get a response by email but when he phoned they helped him.
Good luck and do let us know the result
 
Rapides said:
I think I'd have to take the van apart to get at the PCB!
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We're lucky with ours as it's under a bed with the cover over the pcb right at the front.:)

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Rapides said:
Thanks, but already seen that. Faulty gas regulation seems to be the only likely pick from their list of causes, but I will check for the others again.
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Did you read my link concerning the codes. I think your 4kw main valve could be faulty.
 
Blue Knight said:
Did you read my link concerning the codes. I think your 4kw main valve could be faulty.
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I did, thanks for putting me on to it. Couldn't see gas valve specifically mentioned in the fault code explanations but I mentioned it in my email to Truma. I got an almost immediate response telling me to check gas pressure, regulator, flue and.....gas valve.

Looks like I'll be making a warranty claim, not for the first time.
 
Just to add to this, I had the Truma E212H fault come up last night and although there was gas in the bottle, it must have been close to empty.
Switched over to second bottle and the fault cleared.

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daveandsan said:
Just to add to this, I had the Truma E212H fault come up last night and although there was gas in the bottle, it must have been close to empty.
Switched over to second bottle and the fault cleared.
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My errors may have started when a gas bottle was low, but they’re still happening now regardless of which (full) bottle I switch to.

Anyway, booked in for investigation first week in June. Will report the outcome here.
 
Blue Knight said:
Did you read my link concerning the codes. I think your 4kw main valve could be faulty.
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Blue Knight was on the money. Diagnosed as needing gas solenoid valve and spark plug set. Awaiting parts then it’ll be a two-day job to fit them.
 
Rapides said:
Blue Knight was on the money. Diagnosed as needing gas solenoid valve and spark plug set. Awaiting parts then it’ll be a two-day job to fit them.
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That's great news - I'm pleased that you're back up and running again.

(y)
 
Blue Knight said:
That's great news - I'm pleased that you're back up and running again.

(y)
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Not quite! Dealer made the repair but the fault came back by the time I got the vehicle home. It’s with them again for another go.
 
Rapides said:
Not quite! Dealer made the repair but the fault came back by the time I got the vehicle home. It’s with them again for another go.
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Crickey, that's worse than bad luck. I'm sorry to hear that.

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Well the dealer had a second go by changing the regulator and hoses and told me all was good. This time the fault came back even before I'd left the premises on collecting the vehicle. Took it home anyway and used it for the planned weekend away (on hookup, of course) and wasn't able to get the boiler to fire up on gas a single time. At least a hard fault should be easier to diagnose than an intermittent one.....

Returned to the dealer who removed the boiler again and sent it off to Truma. Diagnosis was a failed ignitor block which was duly swapped out. Boiler now back in the vehicle and said not to have faulted while on test for a couple of days.

Collecting the vehicle on Wednesday 27th November and don't know whether to be optimistic or sceptical. With any luck my next update will be a final one.

This motorhome owes us some stress-free trips after two years of multiple component failures.
 
Hopefully a final update for anyone who might come across this thread in the future.

Boiler not faulted since I got it home, so I’m hopeful the fix is permanent. Don’t discount the possibility of a duff ignitor block being the cause of your E112H and E212H errors should you be unfortunate enough to get them.
 

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