Stoves 720EF Electric Double Oven - Page 6 - Answered Questions & Fixed issues

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Vince,
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Try espares, they may be able to help you.

What is the problem?

Normally the 720ef is the oven, the hob is a separate unit and in my case is a STOVES 600G gas unit. Your unit may have a built on hob but the handbook for the 720ef does not detail this. In my case the hob ID is on the lower right hand side of the unit.
I think you will find that the elements may have failed but you will need to identify the hob to ensure correct replacements. Normally the element rating is on the base of the element. The handbook will tell you how to take the thing to pieces. It is possible that the hob element controls have failed but unlikely for all three or it may be a combination of both parts. I think you may have to contact an electrician to test everything to sort this out.

When the oven (fan) is in use, it circulates warm air round the oven. This air, depending on what you are cooking, may be laden with oil/grease. This builds up on the inside of the fan cover. There are four self tapping screws in each corner of the cover. Undo these and the cover should come straight off revealing the fan and heating element. (The screw holes are offset so you cannot put the cover back upside down). Be careful of the thermostat sensor immediately above the fan cover! Grease/dirt builds up round the vent holes on the cover and may stop the fan turning. The dirt will have to be removed. I use the Lakeland brush on oven cleaner - it works a treat and don't worry about the stay clean surfaces, it cleans those as well.
When you have the cover off, try turning the fan manually to see if it turns easily and has not seized. If it doesn't turn then you will have to take the entire oven out of the kitchen carcass to access the back of it. If it does turn, then switch the oven on and see if the fan turns. If it does, you have found the problem, if it doesn't, then it looks like you will need a new fan motor. Don't leave the oven on too long as the element will not be cooled by the airflow as the cover is off. Let things cool down before you attempt to put the cover back on to stop yourself being burnt on the fan element! Try espares for a new fan.

It could be the thermal cutouts operating. First things first, is the cooling fan running and does it turn off about 10 mins after the ovens/grill are turned off? If it isn't running then the unit is overheating and the thermal cutouts will operate. If it is running normally, then the cutout could be switching in early due to them becoming old and ineffective. There are two cutouts in the oven. One controls the main oven and the other controls the top oven. However, the grill operates without the clock being set, i.e. it is independent of the clock. So, if both the top oven and grill stop working together, according to the wiring diagrams in the handbook, the only thing it could be is the thermal cutout for the top unit.
F.Y.I. The top oven switch controls both the grill and the oven elements. In other words, in its OFF position, the Grill works and the Oven doesn't and in its ON setting the Oven works and the Grill doesn't. However, I can't see this failing as you specify, but worth checking if you take the oven to bits. The Grill will only work if the oven door is down.
If you need to replace the cooling fan, you will have to take the whole unit out of the kitchen cupboard to gain access to the top and rear oven panels, which have to be removed to gain access to the cooling fan and wiring. If you do replace it, ensure all the vents for air circulation are free from dirt and grease before you put it all back.
Try espares for STOVES spares. If the item is not listed you can ask them for a quote.
Be aware that the cooling fan is controlled by a timer circuit board and an in-line resistor on the fan terminal block. Either or both of these two and or the fan could have failed if the fan is not running! Any competent electrician should be able to work out what has failed.
All the diagrams are in the Handbook. If you need a copy, supply an email address and I will send you a pdf copy.
If you do ask for a quote, I suggest you ask for prices for all the parts mentioned above, so once you have checked what has failed, you will have enough info on pricing and availability as to whether to proceed or not.

I can only say for the 720. You have to remove the whole oven from the kitchen furniture and then unscrew/remove the top and side panels. You will then see the springs on either side of the door.
Important. Remove the inner glass panel from the door first, before you release the springs.
To remove the springs, ensure the door is closed and then unhook them. You then should be able to remove the door frame.

I suspect that the oven element has failed, to check this, remove cover at rear of oven compartment, there you will see the round oven element, it should feel hot after turning oven on to heat, if it is cold, replace it.

If you select the function on the selector switch which turns both the fan forced fan and the oven element on at the same time and the fan does not work, but the oven element does then the fan forced fan is faulty and requires replqcement.

If the element and the indicator light both stopped working this suggests a problem with the power supply for the grill control. Either the grill control has no power going to it or it is faulty and requires replacement. If you are not sure what you are doing you'd better get a tech. to look at it, it can be fairly complicated for the untrained person.

For the 720ef , this is what you need to do.
There are five buttons on the clock panel and from left to right they are:- Minute Minder, Cook time, Ready Time, Plus and Minus.
TO SET THE TIME OF DAY
Press the Cook Time button and the Ready Time button simultaneously. Use the Plus and Minus buttons to set the time.(24hr clock).
TO SELECT AN ALARM TONE.
Press the Minus button to listen to the first tone. Release it and press it again to listen to the second tone etc (3 tones)
Releasing the button after the tone has sounded will automatically set that tone.
SETTING THE MINUTE MINDER.
Press the Minuter Minder button and either the Plus or Minus buttons simultaneously to set the time.
You can cancel the timer at any time by setting it back to 00.00 by using the Minus button.
After setting, the display will revert to the time of day, but by pressing the Minute Minder button again, the display will show the remaining time

Grease and dirt builds up around the insides of the slots on the fan cover and this may cause the fan to run slowly as it hits it when it rotates. The cover is held on by four self tapping screws in each corner of the cover. Undo the screws, remove the cover and take a look. In my case, the inside of the cover had masses of grease running down it. Despite what it says, I found the paste-on oven cleaner from Lakeland ideal in removing all the grease. It takes a number of goes, but it does eventually come clean. The fan I think is aluminuim and the cleaner reacts badily with it, so don't attempt to clean the fan with it.
When you put the cover back on, you will find the screw holes offset to ensure it goes back the right way up and not upside down.

For the 720ef , this is what you need to do.
There are five buttons on the clock panel and from left to right they are:- Minute Minder, Cook time, Ready Time, Plus and Minus.
TO SET THE TIME OF DAY
Press the Cook Time button and the Ready Time button simultaneously. Use the Plus and Minus buttons to set the time.(24hr clock).
TO SELECT AN ALARM TONE.
Press the Minus button to listen to the first tone. Release it and press it again to listen to the second tone etc (3 tones)
Releasing the button after the tone has sounded will automatically set that tone.
SETTING THE MINUTE MINDER.
Press the Minuter Minder button and either the Plus or Minus buttons simultaneously to set the time.
You can cancel the timer at any time by setting it back to 00.00 by using the Minus button.
After setting, the display will revert to the time of day, but by pressing the Minute Minder button again, the display will show the remaining time

Supply an email address and I will send you a pdf copy.

I have a pdf version which I can send to you if you supply an email address.

they will be either E14 25watt or E14 15watt cooker oven lamps
to locate the lamp ensure oven is off and look to the back of the oven and unscrew the glass cover, then unscrew the lamp the wattage will be on the brass part of the lamp.

you will be able to purchase them from a local hardware store (if in doubt take the lamp with you and show it to the store assistant)

For the 720ef , this is what you need to do.
There are five buttons on the clock panel and from left to right they are:- Minute Minder, Cook time, Ready Time, Plus and Minus.
TO SET THE TIME OF DAY
Press the Cook Time button and the Ready Time button simultaneously. Use the Plus and Minus buttons to set the time.(24hr clock).
TO SELECT AN ALARM TONE.
Press the Minus button to listen to the first tone. Release it and press it again to listen to the second tone etc (3 tones)
Releasing the button after the tone has sounded will automatically set that tone.
SETTING THE MINUTE MINDER.
Press the Minuter Minder button and either the Plus or Minus buttons simultaneously to set the time.
You can cancel the timer at any time by setting it back to 00.00 by using the Minus button.
After setting, the display will revert to the time of day, but by pressing the Minute Minder button again, the display will show the remaining time

First things first. There are two fans. One in the bottom oven and one to provide background cooling. The background cooling fan turns on when anything is turned on. (Fan oven/top oven/grill). Just operate the top oven for a moment and this should cause the cooling fan to operate. There is a printed circuit board that controls the cooling fan and for how long the fan should stay on once everything has been turned off. (About 7 mins). If this fan is not running then the fan/motor could be faulty, or the circuit board or the resistor on the fan terminal block. The reason the oven will not turn back on is that the residual heat in the oven unit as a whole against the fan oven, is probably too high which causes the overheat device to operate.
You will have to take the oven out of the kitchen carcass, take the top and rear panels off and get an electrician to test and found out which item is not working/failed. Try espares for parts.

The clock has to be set with a time. Any time. When you set the time you will hear a relay operate which will switch the power through to the oven controls. If the clock is faulty so that you cannot set a time, you will not be able to make the bottom oven work.
Look at some of my earlier solutions to see how the clock/timer should be set.