Bosch KGV3120GB/01 Switching Problems

[Plastered]

The Fridge/Freezer KGV3120GB/01 appears to swtich off at the correct point according to the settings, but doesn’t switch back on again. If I switch the power off and on again, it will spring back into life, but only when it has warmed up quite a bit.

I have checked the back of the unit and all seems free of frost or ice, and the grills are clean. The power is getting to the motor from the mains, but the supply is not being switched through to the motor when it should.

I don’t know where to access the thermostat, or thermistor, or whatever temperature sensing device it has, so have come to a halt with my investigations.

Could some knowledgable person give me some clues. You can talk technical if you like because I am an electronics engineer but do not know my way around a Bosch fridge/freezer. – Thanks.

[Simon46]

Re: Bosch KGV3120GB/01 Switching Problems

A thermistor may have failed. A Modification will usually cure it. Check out repairs @ or unplug power if you are going to have a look yourself.

Regards
Simon

[Plastered]

Re: Bosch KGV3120GB/01 Switching Problems

Thanks for the reply.
There are no service engineers listed for my post code.

Where is the thermistor located? Can I access it by unscrewing the 2 screws situated just above the top of the fridge door? I will definately switch off the power before going in.

The Bosch website gives an exploded view, but doesn’t go into enough detail. Also, I haven’t come across any thermistors when looking at Spare parts sites.

[pto]

Post removed by gegsy UKW Moderator

[superfix]

Re: Bosch KGV3120GB/01 Switching Problems

pto wrote:…………..will have to cut the Foam away.

😕 Why do that, the by-pass kit takes all of ten minutes to fit and costs very little 😕

Try a search to find all the relevent info.

Again power off if having a go yourself :zap:

[pto]

They do a kit but it’s just a expensive connector
And I don’t think the fridge will be as economic to run As when a thermistor is in circuit
But that’s just me thinking and it doesn’t always do
To think

Jack

[Plastered]

Re: Bosch KGV3120GB/01 Switching Problems

Going by the comments of pto (the ones I could read, because I don’t know what he said that made the moderator delete it!) I can either buy an expensive kit which basically adds another temperature controlled swtich, or dig into the foam to get to the original thermistor.

I think that both of these options leaves the unit in a worse state than the original condition, and in addition to the fact that I am going to have to work it out as I go along, I have decided to cut my losses and buy a new fridge/freezer.

Btw, did the moderator delete pto’s original message because he gave instructions on how to get to the thermistor? I can understand that there may be legal issues here if instructions are given, and someone gets electrocuted as a result, but it doesn’t help me trying to get information.

Oddly, I can only boot the unit back into life by using the mains switch on the wall, it doesn’t work using the on/off switch on the front panel, and only when the fridge compartment is virtually back at room temperature – why would that be?

On a more general note (minor rant coming up) what is the point of the manufacturers claiming to be all environmentally friendly by producing ‘A Rating’ machines etc, but in such a manner that if something simple fails you might have to throw it into the nearest landfill because you can’t easily change a 99p part. Ease of maintenance should be part of the specifications so the each unit can run for a few years longer which has to be a ‘green’ option – end of rant.

Thanks to those that tried to help.

[Simon46]

Re: Bosch KGV3120GB/01 Switching Problems

A Pity. This is a good fridge freezer and such a simple repair. 🙁

Regards
Simon

[superfix]

Re: Bosch KGV3120GB/01 Switching Problems

The repair is NOT expensive. A competent engineer will have the job done in under half an hour.

Seems mad to chuck the unit for such a minor/simple job.

[gegsy]

Re: Bosch KGV3120GB/01 Switching Problems

Plastered wrote:Going by the comments of pto (the ones I could read, because I don’t know what he said that made the moderator delete it!)

Well if I repeated it that would defeat the deletion 😀 but basically it entailed hacking into a fridge insulation which seemed a tad excessive. If you can be bothered to use the search facility you may even find the mod has already been mentioned previously 😉

I can either buy an expensive kit

Its about £12 p/no 491416, so not too bad.

…. what is the point of the manufacturers claiming to be all environmentally friendly by producing ‘A Rating’ machines etc, but in such a manner that if something simple fails you might have to throw it into the nearest landfill because you can’t easily change a 99p part.

I agree to an extent but like I said and has been mentioned before, there are cheap alternatives to repairing 😀

HTH

Greg

[pto]

Well if I repeated it that would defeat the deletion but basically it entailed hacking into a fridge insulation which seemed a tad excessive. If you can be bothered to use the search facility you may even find the mod has already been mentioned previously

Not hacking into the insulation but to cut carefully a 2ins x 3ins
Hole and slip a new thermistor in place

Its about £12 p/no 491416, so not too bad.

What do you get for your £12 one connector that’s bad
I bet no one on here buys two kits

[pto]

Re: Bosch KGV3120GB/01 Switching Problems

boro wrote:
😕 Why do that, the by-pass kit takes all of ten minutes to fit :zap:

boro wrote:The repair is NOT expensive. A competent engineer will have the job done in under half an hour.
.

10 mins 30 mins ?

[pto]

Re: Bosch KGV3120GB/01 Switching Problems

boro wrote:
😕 Why do that, the by-pass kit takes all of ten minutes to fit :zap:

boro wrote:The repair is NOT expensive. A competent engineer will have the job done in under half an hour.
.

10 mins 30 mins ?

[superfix]

Re: Bosch KGV3120GB/01 Switching Problems

As a BSH engineer it takes me 10 mins.

A non-Bosch or an engineer not familiar with the appliance may take longer.

Does that clear it up.

[gegsy]

Re: Bosch KGV3120GB/01 Switching Problems

PTO
The options are there, either £12 for kit which is granted a mod sheet and two connector OR search for modification which has been posted on here before.
If you are comfortable cutting into the insulation of your own fridge then fine, however other people reading this may not be and may cause further damage to appliance or injure themselves. The main basis of advising on a repair is that it has to be deemed safe and acceptable to the public and we as professional repair engineers have to make sure that the repair offered is based on just that.
Hope thats the end of that as there really is no more to add on this post.

Regards

Greg

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