Caddies104 Posted April 29, 2021 Share Posted April 29, 2021 Hi Not had any problem with the oven before (Autotrail Apache 2017) but this time takes ages to cook anything. The hob burners are really good, hence not thinking it’s the regulator, could it be the thermostat? OR? Advice would be welcome! Link to comment Share on other sites More sharing options...
Derek Uzzell Posted April 29, 2021 Share Posted April 29, 2021 What dooes the oven-burner’s flame look like? Is it as ‘intense’ as it used to be? Does the burner react to the control-knob as you might expect? There’s an exploded view of an Aspire SCK23xxx oven here that might be useful... https://www.leisurespares.co.uk/files/ww/v2_SCK23XXX%20Aspire%202.pdf (Presumably you haven’t switched from propane to butane gas, that MIGHT affect the oven’s performance.) Link to comment Share on other sites More sharing options...
Caddies104 Posted April 29, 2021 Author Share Posted April 29, 2021 The flame is more yellow than blue, doesn’t react like it should, took over an hour + to cook some oven chips the other day Never looks intense any more. Link to comment Share on other sites More sharing options...
Derek Uzzell Posted April 30, 2021 Share Posted April 30, 2021 This YouTube video demonstrates how to use a Thetford oven Obviously you are familiar with the operating procedure, but the video does show what the oven burner-flame should look like - a nice ‘clean’ blue colour as shown in the image attached below. I can’t see the flame’s yellow appearance you’ve described being caused by the oven’s thermostat. Have you checked what the grill’s flame looks like? If the hob-burner flames have a clean blue colour (and can be adjusted from low to high and back as normal) logically there’s a problem with the gas feed to the oven-burner (and to the grill burners too if they exhibit the same yellow look). Link to comment Share on other sites More sharing options...
Alanb Posted April 30, 2021 Share Posted April 30, 2021 My OH informs me that the Smev? oven in our PVC would struggle to cook oven chips. This is because oven chips require a higher temperature setting than that offered by the oven. Longer cookong time results in dried out chips. A yellow flame on a gas appliance generally indicates a restricted air supply. Think back to the Bunsen burner of our schooldays, where closing off the air supply sleeve results in a yellow flame. Alan Link to comment Share on other sites More sharing options...
lancepar Posted April 30, 2021 Share Posted April 30, 2021 Is the door seal in place? Reason I ask is because when we first had our MoHo the oven never worked well until it was noticed the door seal was missing, the grill and kitchen used to get nice and warm though. *-) B-) Link to comment Share on other sites More sharing options...
silverback Posted April 30, 2021 Share Posted April 30, 2021 If the flame is more yellow it is not burning correctly, and will be emitting dangerous gases, get someone to look at it, I take it that it has been stood a while so it will have webs and stuff in it, you could try blowing it out with compressed air or get a pro in Jonathan Link to comment Share on other sites More sharing options...
Caddies104 Posted April 30, 2021 Author Share Posted April 30, 2021 Thanks all, back home now, will definitely get it sorted before next trip... is it worth changing the regulator anyway as its 4years old? Derek Link to comment Share on other sites More sharing options...
Caddies104 Posted April 30, 2021 Author Share Posted April 30, 2021 Derek Uzzell - 2021-04-30 8:01 AM This YouTube video demonstrates how to use a Thetford oven Obviously you are familiar with the operating procedure, but the video does show what the oven burner-flame should look like - a nice ‘clean’ blue colour as shown in the image attached below. I can’t see the flame’s yellow appearance you’ve described being caused by the oven’s thermostat. Have you checked what the grill’s flame looks like? If the hob-burner flames have a clean blue colour (and can be adjusted from low to high and back as normal) logically there’s a problem with the gas feed to the oven-burner (and to the grill burners too if they exhibit the same yellow look). Thanks Derek, ours is nothing like that, will have to investigate further, but probably have to take it somewhere to get rectified Derek Link to comment Share on other sites More sharing options...
silverback Posted April 30, 2021 Share Posted April 30, 2021 if the gas to other appliances is good I would say the regulator is okay but that is just my opinion Jonathan *-) Link to comment Share on other sites More sharing options...
Caddies104 Posted April 30, 2021 Author Share Posted April 30, 2021 silverback - 2021-04-30 1:01 PM if the gas to other appliances is good I would say the regulator is okay but that is just my opinion Jonathan *-) Will check again but the hob burners look good, thanks Link to comment Share on other sites More sharing options...
Derek Uzzell Posted April 30, 2021 Share Posted April 30, 2021 Caddies104 - 2021-04-30 12:53 PM Thanks all, back home now, will definitely get it sorted before next trip... is it worth changing the regulator anyway as its 4years old? Derek If alll the gas appliances (fridge, heater, hob, stove) are turned on and operate normally (except for the oven’s burner) with no signs of reduced gas flow, there’s no persuasive reason to think the regulator is other than in full working order. I think a 2017 Apache 632 will have been built (as standard) with a Truma CS bulkhead-mounted 30mbar regulator fed from a single gas bottle via a Truma ’safety’ hose. When this type of regulator becomes problematiical the usual result is that the gas flow/pressure ‘downstream’ of the regulator is reduced and the noticeable symptoms are that gas appliances will not operate at full output (eg. hob burners) or not at all (eg. a Truma Combi heater). Four years is not long for Truma CS regulators that seem to be a lot more reliable than earlier variants. The reason I suggested you check what the grill-burner flames look like is that, if the hob-burners’ flames are blue, and the grill-burners’ flames are also blue (image attached below) you’ll have at least narrowed the problem down to the oven-burner. Link to comment Share on other sites More sharing options...
Caddies104 Posted April 30, 2021 Author Share Posted April 30, 2021 Derek Uzzell - 2021-04-30 1:50 PM Caddies104 - 2021-04-30 12:53 PM Thanks all, back home now, will definitely get it sorted before next trip... is it worth changing the regulator anyway as its 4years old? Derek If alll the gas appliances (fridge, heater, hob, stove) are turned on and operate normally (except for the oven’s burner) with no signs of reduced gas flow, there’s no persuasive reason to think the regulator is other than in full working order. I think a 2017 Apache 632 will have been built (as standard) with a Truma CS bulkhead-mounted 30mbar regulator fed from a single gas bottle via a Truma ’safety’ hose. When this type of regulator becomes problematiical the usual result is that the gas flow/pressure ‘downstream’ of the regulator is reduced and the noticeable symptoms are that gas appliances will not operate at full output (eg. hob burners) or not at all (eg. a Truma Combi heater). Four years is not long for Truma CS regulators that seem to be a lot more reliable than earlier variants. The reason I suggested you check what the grill-burner flames look like is that, if the hob-burners’ flames are blue, and the grill-burners’ flames are also blue (image attached below) you’ll have at least narrowed the problem down to the oven-burner. Thanks again, will give it a go once it’s stops raining :-( Link to comment Share on other sites More sharing options...
Caddies104 Posted May 1, 2021 Author Share Posted May 1, 2021 Hopefully images will be the right size, hob ok, grill ok, oven not ok! Derek Link to comment Share on other sites More sharing options...
silverback Posted May 1, 2021 Share Posted May 1, 2021 deffo summat wrong with that, jets blocked I suspect Jonathan Link to comment Share on other sites More sharing options...
BruceM Posted May 1, 2021 Share Posted May 1, 2021 It’s my understanding that a non blue flame indicates incomplete combustion which is potentially dangerous. It may be that some thing has spilt on to the burner or there has been a soot build up so in the first instance I’d suggest you clean the burner. If it’s easily removed (ie just lifts out) then I’d clean in a bowl of soapy water with a scrubbing brush. Failing that I’d try cleaning in situ with a cloth and soapy water but avoid water entering and gathering in the burner. If that doesn’t sort matters then you probably need a professional gas fitter to address the issue. Link to comment Share on other sites More sharing options...
Caddies104 Posted May 1, 2021 Author Share Posted May 1, 2021 silverback - 2021-05-01 12:43 PM deffo summat wrong with that, jets blocked I suspect Jonathan Yes the slit jets cleaned out with a tooth pick and has improved Link to comment Share on other sites More sharing options...
Caddies104 Posted June 30, 2021 Author Share Posted June 30, 2021 Hi All just an update on the Thetford oven. The removal of the burner which has been a challenge as no info online of this model, but now I know it’s a few minutes job…. Hopefully the pics will be there so:- In Pic 1 .. you do not need to remove any of the 3 screws, just there to fool you :-) In Pic 2 the all important clip!! that you push back and lift the burner In Pic 3 the elusive burner with the 2 electrodes removed Cleaned and put back- now have a blue flame :-D Link to comment Share on other sites More sharing options...
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