BOSCH CLASSIXX FRIDGE FREEZER – TEMPERATURE LIGHTS FLASHING

[CHRISX]

Re: BOSCH CLASSIXX FRIDGE FREEZER – TEMPERATURE LIGHTS FLASH

:boops: “Hello again Martin, Bob and other Members”,

Further to My enquiries on here a few Weeks ago – taking your advice on carrying out a `Full Defrost` of my Fridge Freezer – I did this over the Weekend.

I turned off the power – completely emptied the Fridge and Freezer and left the Doors open for 24 Hours.

Because I had to take back my Freezer Food late tonight [People going on holiday early Today] I ended up turning the Fridge Freezer back on at 02:30 this morning – I think that I now have another / worse problem:

Obviously the Red Warning light is On and the Fridge Freezer needs to `Start Up` / Circulate the Gas etc. – BUT – about every 2 Minutes there is a loud `Click` and the Display lights go Off and then back On again within a couple of seconds.

This has happened every couple of Minutes for over 80 Minutes – and is on-going as I post this message at 03:55.

As I am writing this I know that this did NOT happen when the Appliance was first `Commissioned` after purchase – or when it has been Turned Off / Defrosted previously and then turned On again – I would have remembered this if it had happened.

I cannot imagine that there will be any `Good News` waiting for Me when I wake up to probably a Freezer full of Defrosting Food – or when I am able look on here later Today – But – `Here’s Hoping`.

Could You please advise Me what could have caused this – after just a `Full Defrost` ?

IF as I have to suspect the Fridge Freezer has a malfunction I am going to have to dispose of a lot of Freezer Food – and I have a Supermarket Shopping Delivery coming to My Home later this Morning !

Thanks in advance for your help.

Regards,

Chris

[CHRISX]

Re: BOSCH CLASSIXX FRIDGE FREEZER – TEMPERATURE LIGHTS FLASH

PLEASE READ MY PREVIOUS MESSAGE OF TODAY ABOVE THIS FIRST – THIS IS A `FOLLOW UP`- 90 MINUTES LATER.

“Hello again”,

As I cannot Sleep because of this `Freezer Full of Food Ruined` problem I looked again at about 05:00 Hrs – 2.5 Hours after turning On the Appliance – the Fridge Freezer Display lights were Flashing again as I described in my original thread opening message.

I am guessing that now the advice will be that the Sensor that I was trying to `rid of Ice` has malfunctioned.

HOWEVER HERE IS SOMETHING THAT I FIND VERY STRANGE:

I found out accidentally that if I open the Freezer Door the Temperature Display lights STOP Flashing and the Appliance makes the usual noise that You would hear when the Compressor is operating – How is that happening ?

Basically the Fridge Freezer seems to be operating `correctly` with the Freezer Door OPEN – but when it is closed the Temperature Display Lights Flash and the Appliance does NOT work !


I have wedged the Freezer Door open about 50mm to see if after a couple of Hours I can close the Door and perhaps the Temperature Display lights will stay illuminated – even to just keep the Food frozen until I can act on whatever Advice I get on here – ?

Obviously I know that this cannot continue as it would be detrimental to the Freezer – I was just `clutching at straws` because of not wanting to have the Freezer Food ruined.

Could You please include some advice on whether this `Freezer Door slightly Open` process CAN be done for a few Hours at a time throughout the Day / Evening to TRY and keep the Freezer Food frozen for a few Days – OR would it cause Damage to the Freezer / Compressor etc. ?

Please help Me with some suggestions – even If I will need an Engineer I would like some idea of what could be causing this VERY strange [to Me] problem – ?

Thanks in advance for your help.

Regards,

Chris

[Martin]

Re: BOSCH CLASSIXX FRIDGE FREEZER – TEMPERATURE LIGHTS FLASH

What a night it’s been eh CHRISX? 😉

I wonder how much water actually needed mopping up after this defrost? Did you empty the water container over the compressor too?

I hate to say this but my gut feeling is that the 24 hr defrost wasn’t long enough time to rectify the problem. 🙁

[CHRISX]

Re: BOSCH CLASSIXX FRIDGE FREEZER – TEMPERATURE LIGHTS FLASH

“Hello again Martin”,

Thanks for reading my messages.

I know that You were joking about the Water – but just in case: –

As I expected from a Frost Free Fridge Freezer there was hardly any water as there was only a very thin layer of Ice at the Top of the [inside] Freezer compartment – I wiped this away as it was melting on Saturday Night – it hardly wet the Cloth – it was the same with the Fridge compartment it was just a bit `Damp` on the back panel.

Just as a matter of interest and in case I have missed something – the `Water Container` – is there one within the Freezer compartment ?

I saw what I assumed to be the Access panel for a Fan at the rear of the Freezer compartment – but I am not aware of any Water container – ?

I thought that because of the current Temperatures that 24 Hours would be long enough.

It was almost 30 degrees in my Kitchen on Saturday Night [Windows closed]- as I was out all night on Saturday Night and all Day Sunday until 02:00 Hrs this Morning when it was 29 degrees – the Temperature would not have gone down much at any time because the Windows were closed for the entire 24 Hours +.

I would have thought that there could not be a better Temperature for doing a Full Defrost ?

I am VERY intrigued about this:

What do You make of what I described about the Temperature display lights and that the Freezer Door being Open seems to cause the Fridge Freezer to work – closing the Freezer Door causes the Temperature display light to Flash continuously again – ?

What could have caused the Temperature display lights [plus Power ?] to keep `Clicking Off` every couple of Minutes for nearly 2 Hours as I previously described ?

The latest situation is that after I wedged the Freezer Door Open for about 2 Hours I closed it – the Temperature Display Lights stayed On and the Fridge Freezer then seemed to just carry on running / cooling – I can hear the Compressor – the Red Alarm light is still illuminated.

Please give Me some idea of what You think has caused the above `Anomalies` regarding the Temperature Display Lights and the Freezer Door seeming to `Operate` the Appliance as if on a Door switch ?

Obviously I know that after all of the VERY strange [to Me] Temperature Display Light `Errors` that the Appliance is NOT operating correctly and the Temperature Lights could start Flashing again at any time.

If it were not the case that I still have a Freezer full of Food with a Supermarket Delivery coming the Morning I would turn the Fridge Freezer Off again and try 48 Hours Full Defrost – BUT I am now stuck with nowhere to store the Frozen Food and the new items being delivered Today.

Thanks again for your help Martin – I really appreciate it.

Regards,

Chris

[Martin]

Re: BOSCH CLASSIXX FRIDGE FREEZER – TEMPERATURE LIGHTS FLASH

Martin wrote:Did you empty the water container over the compressor too?

I wasn’t joking about asking how much water you thought you mopped up and you didn’t answer my 2nd question.

[CHRISX]

Re: BOSCH CLASSIXX FRIDGE FREEZER – TEMPERATURE LIGHTS FLASH

“Hello again Martin”,

I did not answer your second question because I thought that You were Joking about the Water / Water Container and Pouring Water over the Compressor.

I did not empty any Water over the Compressor.

If that is something that should be done why would no-one have mentioned it on here during our various messages ?

I had stated at the time of my enquiry that I would be taking your advice and be carrying out a Full Defrost at some time.

That is not something that is mentioned in the User Manual – a `Trick of the Trade` perhaps ?

It would not have ever occurred to Me that this is something that needs to be done – so I am assuming that it would not be known by most of the general public.

Also if this needs the Appliance to be moved out to access the Compressor it would not be particularly convenient for Me at present as I am suffering from a severe Back problem and my Fridge Freezer is sited between Kitchen Units which would mean bringing it right out into the middle of the Kitchen – not possible for Me without help.

Could You please explain this `Water over Compressor` process a bit further – I take it that it speeds up the Defrosting process – ?

I was assuming – probably incorrectly it seems – that while carrying out a Full Defrost the most important thing was that I was Defrosting the Freezer Cabinet / Compartment `Walls` [and Temperature Sensor] where I thought the Freezer Temperature Sensor was located – although I know that there will be very good insulation in these `Walls` / around the Sensor I thought that approximately 30 degrees Room Temperature for 24 Hours+ would have `Thawed` the Freezer Cabinet `Walls` and the Sensor.

Is there any chance of You helping Me with some possibilities as to what caused the situations that I previously described happening earlier Today – I would really appreciate it – even if it is just speculation.

Thanks again.

Regards,

Chris

[Martin]

Re: BOSCH CLASSIXX FRIDGE FREEZER – TEMPERATURE LIGHTS FLASH

Relax CHRISX, you are overreacting to what I asked and going off on some wild tangent.

Both Samuri and I suspected right from the beginning your fridge freezer may only need a full defrost. This would involve removing all the food and drinks content, removing the drawers and shelves and leaving the door open for a period of not less than 24 hours.

After dozens of posts meanwhile you eventually conceded to our request, great!

Now, what I am trying to establish is how much, if any, water has defrosted in that process? Before you attempt an answer I will further state that often when a frost free fridge freezer is in need of a full defrost then during that period quite a quantity of water needs mopping up inside the appliance. Tea towels strategically placed for the purpose. Also, at the back of the unit there is the large compressor. On top of which is the drip tray that acts as a water collector for any auto-defrost water from the evaporator to flow out of the cabinet via a small drain pipe and into that container.

Under normal operating conditions only a few drips ( a tea cup full at most) flow into that tray and the heat from the compressor below quickly evaporates that water. BUT during a full defrost on an evaporator that is potentially blocked solid with ice then that water container can fill to overflowing and onto the floor..!

So, back to my question, how much water did you find in the tray?

[CHRISX]

Re: BOSCH CLASSIXX FRIDGE FREEZER – TEMPERATURE LIGHTS FLASH

Hello Martin,

You can see from my VERY detailed messages that I did NOT even know to access the rear of the Fridge Freezer – my first reply to You Today indicated that I thought You were Joking about the Water / Water Container / Pouring Water over the Compressor.

I did not see any Water at all as I did not know to look at the rear of the Appliance – certainly no Water ran onto the Floor as it would have run out across the tiles and been visible.

Not expecting any large amounts of Ice to be melting as there was none in the Freezer it would not occur to Me or anyone else that there could be enough Water to overflow onto the Floor.

After seeing your message I emptied the Fridge Freezer again and managed to pull it out a bit from the Wall to look down behind it with a torch – but I could not get it out enough to see the whole Compressor and Water container assembly [because of my Back problem] – I could just about see about 50mm of what looks like a poly water container – I could not see any Water in the part of that that I could see – the Floor is not wet under where that container would be located.

What does this indicate – that the Evaporator was not clogged full of Ice ? – I cannot imagine that anything `went wrong` during the Defrost – except for what You stated – 24 Hours was not long enough.

I explained at the time of our previous messages / a few weeks ago why I could not immediately carry out the Full Defrost – because of not having anywhere to Store the Freezer contents.

Also – I am a Heating Engineer – with the `Enquiring Mind` that I believe you commented on previously – How many Engineers have you dealt with who don`t ask any questions about what you are talking or corresponding about ?

The situations that I asked about earlier Today were very strange to Me:

How could opening the Freezer Door cause the Temperature Display lights to Stop Flashing and the Freezer to operate ?

Why would the Temperature Display lights have been turned Off and back On again about every 2 Minutes for about 2 Hours.

Anyone experiencing this would want to ask about it.

Regards,

Chris

[CHRISX]

Re: BOSCH CLASSIXX FRIDGE FREEZER – TEMPERATURE LIGHTS FLASH

“Hello Martin”,

I would like to see if I can get some answers / comments from other Members about what could have caused these strange malfunctions to my Fridge Freezer when I turned it On after trying the Full Defrost.

I am going to Post the descriptions of these malfunctions in a separate thread.

As I suspect that there is a `Forum Etiquette` on here where other Members will NOT reply to threads where a Senior Member or Moderator is replying could You please NOT reply to Me on the other thread.

It is obvious to Me that You simply will not reply to questions that You feel for some reason that I do not need to know details about so please let Me see if other Members will comment on what I will be asking.

Thank You for your help and advice on this thread.

Regards,

Chris

[Martin]

Re: BOSCH CLASSIXX FRIDGE FREEZER – TEMPERATURE LIGHTS FLASH

I will respect your wishes CHRISX and good luck in solving your fridge problem. 😀

[bronxboy]

Re: BOSCH CLASSIXX FRIDGE FREEZER – TEMPERATURE LIGHTS FLASH

Good Morning – my name is Daniel, and I am new to your forum. I came across this thread from last year doing a google search, which describes exactly what is happening with my Bosch Refrigerator/Freezer KSU40600GB/02 – FD8107 – 000362.

It is 276 litre refrigerator and 105 litre freezer – and is 70 cm wide. Due to logistics of our kitchen and our eating habits, this size and style of unit (much larger fridge than freezer) really suits our needs. Seems quite difficult now to find exact replacement, at a reasonable cost. So while I have owned the fridge from new since June 2002, and 13 years service is not all that bad these days, I really would like to keep it going, if possible.

For the past 5 years, we have had the following issue: After doing a full defrost (36-48 hrs), the fridge would struggle a bit to turn on (doing the on/off on/off flashing lights described in this thread), but eventually turn on and get to normal operating temp.

It would be OK for around 6 months – when one of two things (or both) would happen:

The on/off on/off flashing lights AND/OR water coming into the fridge. I would be able to absorb the water with a couple of sponges, and a couple times a day squeeze out the sponges.

The “water issue” would last say 2-3 weeks, during which the fridge would otherwise work perfectly and all food remained cold/frozen. After 2-3 weeks, we would have the on/off on/off lights flashing issue, when we knew we would need to do a 36 hr defrost.

I was always of the belief that there was a “block of ice” somewhere – and seems from what I read here that seems to be the case.

I would do a full defrost – and again, for 6 months we would be good to go.

I did a full defrost mid July – but now only 2 months later – I am getting the on/off on/off flashing lights. NO WATER is coming into the fridge. I can get the fridge to eventually work with the doors shut – and it seems to work overnight, but as soon as we open door in the morning, the whole on/off on/off thing starts again.

I had an engineer come out last week – he removed the top panel where the temperature indicators and on/off button is – hooked up a meter – and advised it was the PCU (Power Control Unit ???) which would cost around £150.

I have just turned off the fridge and will do a full full full defrost for 72 hours minimum – I am well aware of the container over the compressor where water will collect (I am always amazed that after 24 hours hardly any water is there – but then the next 12 hours sees ALOT of water).

I also am aware of the small tube that goes into the container – which in the past i have removed and cleaned out if needed.

However, I have never had water come into the fridge while doing the full defrost (only when it is on for 6 months after the previous defrost)

Apologies for the long description, but trying to give background before asking my questions:

1 – Could it really be the PCU that is causing the fridge to have these issues, every 6 months?

My “gut feel” is that – if it is POWER UNIT, the fridge would either work or not work.

Could the ice build up potentially give a “false PCU reading”?? My concern is that I pay to have the PCU replaced, and 2,3, or 6 months later, I get the same issues.

2 – Is there a sensor or some sort of heater that should be melting, what I am assuming is an ice build up (not visible in the freezer by the way).

I am hoping by giving the fridge a full full full 72 hours defrost this may indeed help matters.

3 – After the engineer did his tests, and had turned the fridge off – he in fact also refitted the door, as a bearing had worn – the fridge was struggling to stay on. He carefully (with a protective glove) removed the 2 refrigerator bulbs – waited a moment – and put them back in – and viola, the fridge stayed on.
He said it was “a little trick”.

Just curious, why does this seem to work? I should say it only worked for a weekend. When I have tried it – no luck.

I will of course update in 72 hours after I have done the FULL FULL FULL defrost – but any initial comments in the mean time (or anything else I can do in the mean time) very much appreciated.

many thanks

[SAMURI]

Re: BOSCH CLASSIXX FRIDGE FREEZER – TEMPERATURE LIGHTS FLASH

I have replied to your pm.

Cheers

Bob

[bronxboy]

Re: BOSCH CLASSIXX FRIDGE FREEZER – TEMPERATURE LIGHTS FLASH

Just like to say a MASSIVE THANK YOU to SAMURI (Bob) for helping me out via PM – turns out it was a fault in the PCB – a faulty capacitor.

Instead of having to pay Bosch stupid money for a replacement PCB, I found a place the repairs PCB – in and out in 20 minutes, £20 repair.

Still need to wait and see that the fridge is working under normal conditions – but so far up and running 1 1/2 hours with no issues.

GREAT FORUM !!!!!!!!!!

[rbwbabs]

Re: BOSCH CLASSIXX FRIDGE FREEZER – TEMPERATURE LIGHTS FLASH

Dear SAMURI (Bob) & bronxboy ,
I have the same problem as bronxboy and Chrisx had last year.
Could you please advise on
– accessing my pcb – I have a 10 yr old Bosch kgu34640gb frost free and
– bronxboy , what sort of shop/business do I look for re repairing a pcb. (presumably something like computer repairers/builders?)
Thanks
Babs

[portugaluja]

Re: BOSCH CLASSIXX FRIDGE FREEZER – TEMPERATURE LIGHTS FLASH

Hi!

I’ve just come across this forum and hopefully I can get some help, please.

I have exactly the same problem as bronxboy with my Bosch KSU40600 and the flashing lights.

Many thanks!

[Author]

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