2021 McLouis Fusion 331, 18,000 miles
Bar a minor usability issue, we've been impressed with the Truma / Combi (E) setup - it's a very competent multi-function system.
We've been using it on LPG (never electric) for two years now, for heating and hot water. At the start of this trip, two weeks ago, the heating had been running fine, no bother. But when I put the hot water on, there was a slight burning smell in the hab about fifteen minutes later. I turned the hot water off and inspected the boiler compartment and the smell seemed to be coming from there. As we were staying on a site with showers, etc., we decided to use the kettle to heat water for washing up. And to 'keep an eye' on the boiler.
Since the boiler uses the same burner for heating and hot water, I figured the problem could not be the burner but must be the water-heating part specifically. On reflection, when the hot water is on and the heating is off, the hot air heating heat exchanger has no cold air going over it and so will get much, much hotter - so it could actually be the heating heat exchanger burning off dust and crud.
I'm usually happy to get hands-on with faults but I draw the line at gas - I'm not competent and it's dangerous! So beyond simple inspections, amateur theorising and the like, I leave it well alone.
Anyway, the heating has been working fine for two weeks. Today I put the hot water on and got that slight burning smell again and so switched it off. Later I ran it again and it was completely fine.
Anyone had this issue? I'm curious to know if it's a common thing. The smell is slight and when I inspect the boiler compartment, it's not overly hot, all the ducts are in good condition, nothing looks out-of-place. It is dusty in there, though - I do need to clean it out, as the manual says I should every year!
I have enquired locally about gas servicing. When I dig down into what they will actually do, it seems that they will inspect the gas lines and appliances but will not look at the boiler. I want the opposite - I want a proper service of the boiler by someone approved by Truma. Is there anyone near Suffolk who could do that?
Thanks!
[Oh, and thanks to anyone who is going to advise me to be careful with gas - your concern is much appreciated ;-) ]
Bar a minor usability issue, we've been impressed with the Truma / Combi (E) setup - it's a very competent multi-function system.
We've been using it on LPG (never electric) for two years now, for heating and hot water. At the start of this trip, two weeks ago, the heating had been running fine, no bother. But when I put the hot water on, there was a slight burning smell in the hab about fifteen minutes later. I turned the hot water off and inspected the boiler compartment and the smell seemed to be coming from there. As we were staying on a site with showers, etc., we decided to use the kettle to heat water for washing up. And to 'keep an eye' on the boiler.
Since the boiler uses the same burner for heating and hot water, I figured the problem could not be the burner but must be the water-heating part specifically. On reflection, when the hot water is on and the heating is off, the hot air heating heat exchanger has no cold air going over it and so will get much, much hotter - so it could actually be the heating heat exchanger burning off dust and crud.
I'm usually happy to get hands-on with faults but I draw the line at gas - I'm not competent and it's dangerous! So beyond simple inspections, amateur theorising and the like, I leave it well alone.
Anyway, the heating has been working fine for two weeks. Today I put the hot water on and got that slight burning smell again and so switched it off. Later I ran it again and it was completely fine.
Anyone had this issue? I'm curious to know if it's a common thing. The smell is slight and when I inspect the boiler compartment, it's not overly hot, all the ducts are in good condition, nothing looks out-of-place. It is dusty in there, though - I do need to clean it out, as the manual says I should every year!
I have enquired locally about gas servicing. When I dig down into what they will actually do, it seems that they will inspect the gas lines and appliances but will not look at the boiler. I want the opposite - I want a proper service of the boiler by someone approved by Truma. Is there anyone near Suffolk who could do that?
Thanks!
[Oh, and thanks to anyone who is going to advise me to be careful with gas - your concern is much appreciated ;-) ]
