Hopefully someone can help.My wife is the proud owner of a 30 amp aga 4 oven .the control wire is broken .Does any one have a workshop manual or parts manual for same.Engineers are very hard to get at the moment so I choose to tackle this myself and am just wondering do I rip from the front or down from the top
any help would be appreciated
Thanks in advance
Pat

 

You need to get the model number and see if there's any videos of this being repaired or take pictures of it to help us.

 

Well I found a User Manual which doesn't have any drawings or schematics. When you mention "control wire" is broken. A good picture would help. Then I found this manual and while not for the 4 oven it does have a few images and one image on page 6 references what you may be mentioning with control.

Ron

 

Well I found a User Manual which doesn't have any drawings or schematics. When you mention "control wire" is broken. A good picture would help. Then I found this manual and while not for the 4 oven it does have a few images and one image on page 6 references what you may be mentioning with control.

Ron

The manual provides a drawing which shows a lot of wires.
It looks like the sensor is a thermocouple, but there is also a ribbon cable.

Without a better description of which wire we can not offer any help at all.

 

Without a better description of which wire we can not offer any help at all.

I do believe that covers it. Pretty cool oven system.

Ron

 

Thanks lads,
What I want to know is do I rip in from the front or down the top to replace the broken wire in the first picture below?

 

That looks like a two conductor thermocouple cable. That can be verified by following it to whatever it connects to, which on one end will be the thermocouple and on the other end will be the electronic control module. It also looks like the insulation has already cracked because of the high heat. So you will need to enter both sides to gain access to replace te whole thing, because the appearance is that the wire pair was cut too short, or at least installed incorrectly.
Do you know why the cable is broken? It it IS a thermocouple cable then splicing it will be a bit more complex, especially if it is already too short.
When you get to the other side of that opening give a close examination because it does not look like the other power wires. It appears to be two much smaller conductors side by side.
It may be that you will need to replace the whole assembly, which is visible in the picture in that second book.

 

That looks like a two conductor thermocouple cable. That can be verified by following it to whatever it connects to, which on one end will be the thermocouple and on the other end will be the electronic control module. It also looks like the insulation has already cracked because of the high heat. So you will need to enter both sides to gain access to replace te whole thing, because the appearance is that the wire pair was cut too short, or at least installed incorrectly.
Do you know why the cable is broken? It it IS a thermocouple cable then splicing it will be a bit more complex, especially if it is already too short.
When you get to the other side of that opening give a close examination because it does not look like the other power wires. It appears to be two much smaller conductors side by side.
It may be that you will need to replace the whole assembly, which is visible in the picture in that second book.

Thanks bill,My question is how do I dismantle it,is it from the top of the hob or in from the front?

 

My distance vision is such that I have not seen the stove. Is it free-standing? or is it built in? Do the pictures in the manual show views of the top, front, or back.
Mostly a free-standing stove is opened from the back. Can you post some pictures so I can see what is there.
Look at the other manual so you know what the thermocouple looks like, and then it looks like you will need to access that area .
But the very first step is to see if you can get a replacement part, because there may be a long wait for that. And if the wires on the replacement are not long enough either, some revisions may be required.
AND, the folks that service stoves ARE NOT ENGINEERS. They may be master Craftsmen and very good at service. But they are not engineers.

 

I am not seeing a broken wire. I agree with Mister Bill it looks like a thermocouple manufactured using ceramic insulators similar to this.


There should be a junction at the wire end where the two conductors are likely welded together. The wire looks to run through the hole beside it into the oven chamber where it measures temperature. If I have this correct what you see is what I would expect to see. What exactly is the problem, what does the oven do or not do?

The cotton like stuff is ceramic fiber insulation which is marketed under a dozen brand names. What I believe to be a thermocouple is made up like the image example using the flat style ceramic insulators. On the exposed end in your image there should be a junction of the two wires.

Ron

 

I am not seeing a broken wire. I agree with Mister Bill it looks like a thermocouple manufactured using ceramic insulators similar to this.
View attachment 282256

There should be a junction at the wire end where the two conductors are likely welded together. The wire looks to run through the hole beside it into the oven chamber where it measures temperature. If I have this correct what you see is what I would expect to see. What exactly is the problem, what does the oven do or not do?

The cotton like stuff is ceramic fiber insulation which is marketed under a dozen brand names. What I believe to be a thermocouple is made up like the image example using the flat style ceramic insulators. On the exposed end in your image there should be a junction of the two wires.

Ron

In the photo of the other oven, the thermocouple is shown in a thing stainless steel sheath for the last few inches. In that case there is no exposed junction. Because producing an assembly like that is a specialized shill, and requires special equipment, probably tyeoven makers buy them from an outside source. And because a number of different types can be used over the normal cooking range, the correct replacement must be used. Not all of them are the same. What part of the world is this stove located in??

 

In the photo of the other oven, the thermocouple is shown in a thing stainless steel sheath for the last few inches. In that case there is no exposed junction. Because producing an assembly like that is a specialized shill, and requires special equipment, probably tyeoven makers buy them from an outside source. And because a number of different types can be used over the normal cooking range, the correct replacement must be used. Not all of them are the same. What part of the world is this stove located in??

Yeah, I saw that also. I keep looking at the image the thread starter posted. The posted image looks pretty close to the example I used. Less an actually maintenance manual this is as good as it gets. Then we have The AGA Appliance Repair Parts to peruse. A Google of AGA thermocouples brings up several but none resemble the images posted. Heck I am even seeing capillary tube thermostats so these guys make a wide range of ovens and grills, all sorts of kitchen stuff. Beats me. What was posted bears a resemblance to what I posted. Less more pictures and information I am out of ideas.

Ron

 

Yeah, I saw that also. I keep looking at the image the thread starter posted. The posted image looks pretty close to the example I used. Less an actually maintenance manual this is as good as it gets. Then we have The AGA Appliance Repair Parts to peruse. A Google of AGA thermocouples brings up several but none resemble the images posted. Heck I am even seeing capillary tube thermostats so these guys make a wide range of ovens and grills, all sorts of kitchen stuff. Beats me. What was posted bears a resemblance to what I posted. Less more pictures and information I am out of ideas.

Ron

Thanks Ron,attached is a picture of the aga ,it is built in.The new aga man is supposed to be coming tomorrow ,he seems sound on the phone.The last 2 were total dicks ,overcharging for their time and taking 3 hrs to do a 1 hr job eg replacing the top fan.Our biggest mistake is we turned off the cooker for the summer ,instead we should have left it on at the lowest setting instead.I will report back tomorrow evening with the latest,I am in ireland by the way

 

Thanks Ron,attached is a picture of the aga ,it is built in.The new aga man is supposed to be coming tomorrow ,he seems sound on the phone.The last 2 were total dicks ,overcharging for their time and taking 3 hrs to do a 1 hr job eg replacing the top fan.Our biggest mistake is we turned off the cooker for the summer ,instead we should have left it on at the lowest setting instead.I will report back tomorrow evening with the latest,I am in ireland by the way

 

Thanks Ron,attached is a picture of the aga ,it is built in.The new aga man is supposed to be coming tomorrow ,he seems sound on the phone.The last 2 were total dicks ,overcharging for their time and taking 3 hrs to do a 1 hr job eg replacing the top fan.Our biggest mistake is we turned off the cooker for the summer ,instead we should have left it on at the lowest setting instead.I will report back tomorrow evening with the latest,I am in ireland by the way

Interesting. I am wondering what is the motivation for keeping an electric oven on when it is not needed? That is curious to me. And incompetent service people are a burden all over the world. A missionary friend in Thailand had a refrigerator that developed an automatic defrost system problem. The repair guy told him it could not be repaired, and so he contacted me, and attached the circuit diagram of the refrigerator. He did have a meter and after about three exchanges I said it had to be a failed defrost element by a door. He did a resistance check and found one heater open, replaced it and auto defrost resumed.
But a broken TC cable in an expensive, and rather high powered, electric stove should be simpler.
A question: How long had you used it before it failed?? Or is it new?
If a new TC is installed in the same manner as the failed one, I predict another failure, because TC wires are not very string, nor that very durable.They should be supported and never pulled against sharp edges.

 

it is 6 yrs old,Out of frustration I removed the front panels thinking it might be one of the elements,But when I described it to the service man that is coming tomorrow he said it was the control wire when i described to him which one was broken.all will be relieved tomorrow

 

Be sure to watch the service an gain access to the different areas so that you can do it next time! You are already paying for the service, learning from watching is a good way to recover some value.

 

OK, with the views that we see being in a front door that implies that the wire is bending every time the door is opened or closed. That is FAR from a correct design. Solid wire especially should never be subject to multiple flexing like that. So possibly the TC should be installed in a different location, or you should learn how to do the replacement project, as it will certainly fail again.

 

Thanks Ron,attached is a picture of the aga ,it is built in.The new aga man is supposed to be coming tomorrow ,he seems sound on the phone.The last 2 were total dicks ,overcharging for their time and taking 3 hrs to do a 1 hr job eg replacing the top fan.Our biggest mistake is we turned off the cooker for the summer ,instead we should have left it on at the lowest setting instead.I will report back tomorrow evening with the latest,I am in ireland by the way

Well alrighty at least we will finally know more. My observations with service people is they either know a system or they try shotgun just changing stuff till they get lucky on your dime. By all means please post back once you have something.

Ron

 

Well alrighty at least we will finally know more. My observations with service people is they either know a system or they try shotgun just changing stuff till they get lucky on your dime. By all means please post back once you have something.

Ron

Hi Ron
well the new independent service man called,He had the part tc cable, so we did not have to rip in from the front or the top as it shoves in from the front and was not joined to anything,200 euro for the call and parts and I can ring him anytime with a question,nice to meet someone genuine.
so till the next time lads ,thanks for all the help,and have a very merry christmas from all in Tipperary