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Main cooling fan switches on and off rapidly

My oven has developed a fault where the main colling fan switches on and off very quickly (once a second) when it is switched on. This happens if either top oven or bottom oven are switched on.

Both ovens works OK , ie heat up and switch off when temperature reached. Also the fan in the bottom fan oven works OK as well.

User manual shows a schematic which seems to match my oven (when i took the top off)

Assume fault is with the PCB (or thermal cutout) for the main cooling fan (CF2), and the PCB called TGR1 (the actual PCB has markings Promar and TRIG-03) and pinout is as per manual but plugs for T1 to T4 are inserted backwards to user manual. Assume user manual is out of date.

Can anyone help with
a) have i made the right diagnosis - replace this PCB?
b) where could I get the PCB from?
c) Is this Oven the same as a NEFF ie could I get a NEF spare to fit?

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Hi there,

could i get the exact model # for your stove please?

Posted on Sep 15, 2008

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CANDY F 254


Possibly the fan in the oven has developed a fault. Get an electrician to come and test the fan.

The worker should do tests on the oven to make sure everything is safe to use once any repairs are done.

Mar 16, 2014 | Candy Ovens

1 Answer

Have a stoves 720 es main oven fan does not stay on to cool oven after switch off> also the oven will not trun back on when it is still hot or warm ? will


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.

Jan 24, 2011 | Stoves 720EF Electric Double Oven

1 Answer

Bottom oven is not working even though the top one is 720EF model


When you turn the bottom oven on, does the fan start to run in the oven? Do the oven lights come on? Does the main cooling fan switch on? Does the oven control knob illuminate? Does the thermostat neon illuminate?
As a guide, the power/control for the bottom oven is via the main switch on the front panel. Power then goes from the switch through the thermostat to the the oven/element/fan. The lights go direct from the switch.
I hope this helps.

Sep 17, 2010 | Stoves 720EF Electric Double Oven

1 Answer

Main oven switches itself off


sounds like cooling fan not working. check the fan and a limpet stat that switches it on. without the cooling fan the oven cabinet overheats and a safety cuts out the oven.safety stat could be faulty if no prob with other stuff.

Jul 20, 2010 | Electrolux EOU6330 Electric Double Oven

1 Answer

My oven is saying "stop" . Previously to this is was showing F02 and the fan wouldn't turn off. We turned the main switch for oven off and back on and it now says "stop"


Previous fault F02 is indicating an overheat fault- service manual says to replace main electronic control board. However, switching off at wall has reset the clock- you need to set the time before the oven will work-press middle button until small triangle is next to clock icon, set time using temperature dial. Once clock has ben set, try using oven to see if F02 fault reappears- sometimes switching off at wall will clear fault. Good luck!!

Mar 16, 2010 | Whirlpool AKZ159IX Oven

1 Answer

I have a Competence B1180, it cuts out after irregular periods of time, although sometimes it may even complete a cooking cycle, if turned off for 10-15min it will re-start, but invariably cuts out again...


Could be caused by either of following;

1. Faulty thermostat.
2. Faulty thermal cut out switch. (controls power to cooling fan).
3. Faulty cooling fan (not fan inside oven).

Test thermostat by setting thermostat to low temperature like 60 oC. If oven gets much hotter then its a faulty thermostat.
To test cooling fan and thermal switch take oven out and remove top or rear panels to expose components.
When oven gets hot the cooling fan should turn on. If it doesn't then check to see if there is a mains voltage present.
If mains current exist but fan is not turnig then replace fan. If mains voltage is not present then its the thermal switch.

Mar 01, 2009 | AEG B1180-4 Electric Single Oven

2 Answers

My oven turns off on me after only a minute never heating up fully


Could be caused by either of following;

1. Faulty thermostat.
2. Faulty thermal cut out switch. (controls power to cooling fan).
3. Faulty cooling fan (not fan inside oven).

Test thermostat by setting thermostat to low temperature like 60 oC. If oven gets much hotter then its a faulty thermostat.
To test cooling fan and thermal switch take oven out and remove top or rear panels to expose components.
When oven gets hot the cooling fan should turn on. If it doesn't then check to see if there is a mains voltage present.
If mains current exist but fan is not turning then replace fan. If mains voltage is not present then its the thermal switch.

Jun 19, 2008 | AEG B1180-4 Electric Single Oven

2 Answers

Bosch HBN 455 Oven Cooling-Fan Issue


After the oven is switched off, the after-run of the cooling fan is controlled by an electromechanical thermostat switch. The fan can switch back on, due to residual oven heat that accumulates within the oven's outer case and reactivates the cooling fan temperature switch. Considering yours is making buzzing sounds and activates on and off, the fan's thermal switch may have dirty contacts or just be defective and require replacement.

Sep 12, 2007 | Bosch HBN 455 Stainless Steel Electric...

1 Answer

Oven


oven has two fans. the second fan is out of sight and cools the casing. it is operated by a seperate stat. not unusual for it to run for up tohalf hour after switching off. if it runs for an excessive time may be a fault nwith fan stat

Mar 20, 2007 | Bosch HBL 5056 Electric Double Oven

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