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Thetford SCK2300 oven
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userCaddies104
Posted: 29 April 2021 4:10 PM
Subject: Thetford SCK2300 oven
 


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Location: Birmingham, Auto Trail Apache 632 (2017)


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!


userDerek Uzzell
Posted: 29 April 2021 6:37 PM
Subject: RE: Thetford SCK2300 oven
 


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Location: MODERATOR - 2015 Rapido 640F LHD 2.3ltr 150bhp


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.)
userCaddies104
Posted: 29 April 2021 8:44 PM
Subject: RE: Thetford SCK2300 oven
 


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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.
userDerek Uzzell
Posted: 30 April 2021 8:01 AM
Subject: RE: Thetford SCK2300 oven
 


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Location: MODERATOR - 2015 Rapido 640F LHD 2.3ltr 150bhp


This YouTube video demonstrates how to use a Thetford oven

https://www.youtube.com/watch?v=GrEl0lKjkTw

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).



(flame.png)



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Attachments flame.png (170KB - 12 downloads)
userAlanb
Posted: 30 April 2021 9:06 AM
Subject: RE: Thetford SCK2300 oven
 
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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
userlancepar
Posted: 30 April 2021 10:40 AM
Subject: RE: Thetford SCK2300 oven
 


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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.

usersilverback
Posted: 30 April 2021 10:56 AM
Subject: RE: Thetford SCK2300 oven
 


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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
userCaddies104
Posted: 30 April 2021 12:53 PM
Subject: RE: Thetford SCK2300 oven
 


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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
userCaddies104
Posted: 30 April 2021 12:57 PM
Subject: RE: Thetford SCK2300 oven
 


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Location: Birmingham, Auto Trail Apache 632 (2017)


Derek Uzzell - 2021-04-30 8:01 AM

This YouTube video demonstrates how to use a Thetford oven

https://www.youtube.com/watch?v=GrEl0lKjkTw

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
usersilverback
Posted: 30 April 2021 1:01 PM
Subject: RE: Thetford SCK2300 oven
 


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if the gas to other appliances is good I would say the regulator is okay but that is just my opinion
Jonathan
userCaddies104
Posted: 30 April 2021 1:16 PM
Subject: RE: Thetford SCK2300 oven
 


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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
userDerek Uzzell
Posted: 30 April 2021 1:50 PM
Subject: RE: Thetford SCK2300 oven
 


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Location: MODERATOR - 2015 Rapido 640F LHD 2.3ltr 150bhp


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.



(grill burner.png)



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Attachments grill burner.png (169KB - 6 downloads)
userCaddies104
Posted: 30 April 2021 2:26 PM
Subject: RE: Thetford SCK2300 oven
 


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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
userCaddies104
Posted: 1 May 2021 11:48 AM
Subject: RE: Thetford SCK2300 oven
 


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Location: Birmingham, Auto Trail Apache 632 (2017)


Hopefully images will be the right size, hob ok, grill ok, oven not ok!

Derek



(64FDBCC4-5065-4D5E-8FDF-EE992E877695.jpg)



(C6EDC985-82FE-4913-B8CE-0CF4D7B6E32A.jpg)



(91579B57-112F-4718-9D17-101947860C93.jpg)



Attachments
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Attachments 64FDBCC4-5065-4D5E-8FDF-EE992E877695.jpg (26KB - 9 downloads)
Attachments C6EDC985-82FE-4913-B8CE-0CF4D7B6E32A.jpg (16KB - 9 downloads)
Attachments 91579B57-112F-4718-9D17-101947860C93.jpg (44KB - 14 downloads)
usersilverback
Posted: 1 May 2021 12:43 PM
Subject: RE: Thetford SCK2300 oven
 


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deffo summat wrong with that, jets blocked I suspect
Jonathan
userBruceM
Posted: 1 May 2021 12:50 PM
Subject: RE: Thetford SCK2300 oven
 
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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.
userCaddies104
Posted: 1 May 2021 1:20 PM
Subject: RE: Thetford SCK2300 oven
 


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Location: Birmingham, Auto Trail Apache 632 (2017)


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



(FAB137EC-67A0-4843-AD4C-7A7063447DFF.jpg)



Attachments
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Attachments FAB137EC-67A0-4843-AD4C-7A7063447DFF.jpg (31KB - 12 downloads)
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