I have just built a camper and installed a Truma 14litre HWS. I am not having much luck getting the thing working. I have been on the blower to Truma and checked off everything they suggested to get the thing going, gas pressure, changed regulator, wired directly to the battery, volts and amps are OK it still faults. Truma seem to be trying everything they can to avoid warranty repair which is a little frustrating. Anybody else had the same issue?
Who installed Truma? Should be certified gas fitter to be compliant with signed sticker on it. Seek information from Dealer that sold it - he is responsible to attend to warranty repairs. Has the unit ever worked?
-- Edited by Possum3 on Saturday 5th of June 2021 01:09:25 PM
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Possum; AKA:- Ali El-Aziz Mohamed Gundawiathan
Sent from my imperial66 typewriter using carrier pigeon, message sticks and smoke signals.
No but it has been back to a caravan dealership, Truma authorised repairer, and they couldn't fix it! So they sent me home to get the regulator replaced. So I got the plumber back and replaced that. It made no difference. Re wired direct to the battery instead of the MPPT controller. That made no difference either. No surprise there.
It comes on, I can hear it clicking and then the poof of the gas igniting and 20 seconds later it shuts down. Little red light comes on the remote switch.
Bob, Just a thought - You've changed the regulator but did you change the Gas Bottle with a full one? I recall a similar issue on this site when there wasn't enough gas left in the bottle. Can't hurt to check.
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Possum; AKA:- Ali El-Aziz Mohamed Gundawiathan
Sent from my imperial66 typewriter using carrier pigeon, message sticks and smoke signals.
OP doesn't say type of camper. About 14 - 15 years ago on a new Jayco Eagle we had there was an ongoing issue with the flexible gas line between the regulator and the bottle. Jayco replaced the flexible hose with a copper pigtail under warranty and all was well. Worth a look to at least. Good luck!
Yeah I would have thought gas issues would have been picked up. It has been pressure tested 3 times now. The Truma distributor keeps pointing to items outside the unit rather than deal with the possibility that their unit is faulty. I think it has to be a sensor somewhere. I will persist obviously.
The Truma distributor keeps pointing to items outside the unit rather than deal with the possibility that their unit is faulty. I think it has to be a sensor somewhere. I will persist obviously.
They do have a thermocouple that will shut it down if flame is not sufficient.
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Possum; AKA:- Ali El-Aziz Mohamed Gundawiathan
Sent from my imperial66 typewriter using carrier pigeon, message sticks and smoke signals.
The Truma distributor keeps pointing to items outside the unit rather than deal with the possibility that their unit is faulty. I think it has to be a sensor somewhere. I will persist obviously.
They do have a thermocouple that will shut it down if flame is not sufficient.
TBH I dismissed that because it runs for abt 20 seconds. Thermocouple would normally cut off gas long before that. But u never know.
I have just built a camper and installed a Truma 14litre HWS. I am not having much luck getting the thing working. I have been on the blower to Truma and checked off everything they suggested to get the thing going, gas pressure, changed regulator, wired directly to the battery, volts and amps are OK it still faults. Truma seem to be trying everything they can to avoid warranty repair which is a little frustrating. Anybody else had the same issue?
I hate to say the obvious but is the cover on the outside off
its risky, but have you disconnected the unit from the gas at the shut off valve near the unit,just to quick check if there is sufficient flow Turn off ALL elec. first.
Solved but not fixed. I have found if I park with the exhaust facing into the wind it will work. I can also make it work if I blow into the exhaust everytime it is about to trip out. So not a gas issue but an air issue. Because it is camper and I have had to put the truma extension cowl on which might have something to do with it.
I had occasion to have a look through the forum recently about this same issue. Some good leads came out of it and I have made an interesting observation.
Before leaving home I checked everything was working ok and was satisfied all was good. I then gave the whole van a spray with spider kill due to the build up of webs.
When we got to intended destination the Truma worked fine for a day and then started the same faulting as described by Malibubob.
While looking around the cowling area I noticed a spider web on the inlet side. It had obviously been there before so I partially discounted this as the problem but being mildly OCD I removed the cover to clean it out. WELL! There was Ipsey Whipsey Bloody Spider dead in the middle of his web (can recommend Biflex as Spider killer), right in the area of the airflow to the burner.
Removal of said Ipsey Whipsey Bloody Spider has resulted in a much happier wife having hot shower and me enjoying drinks much more.
Lesson for me and maybe others - be very attentive to anything that may change the airflow to these units. As Bob noticed I have found if I park with the exhaust facing into the wind it will work. I can also make it work if I blow into the exhaust everytime it is about to trip out.
After much fault finding effort, I discovered our Truma HWS wouldn't operate on gas as one of the 2 leads from the gas bottle to the regulator had a faulty return valve in the end of the hose. Oddly the stove top and the oven worked on that line but our Baby Q wouldn't, nor did the HWS. The leads are less than 4 years old. Some days thinking outside the square is mandatory. Truma suggested that it would probably be an electrical wiring fault. I wired a separate 12volt source temporarily to the unit and spent an hour cutting through the mastic to remove the external vent.
Sad face.
In the end I cut a section of the vent out to let more air in. Works most of the time now but yeah the thing has a problem in that very sensitive to how much air is in the vent. Too much or not enough and it trips out.
