Repair man has serviced fridge freezer but on control panel a.l./alarm sign still showing

Looks like this model is now out of date and I wouldn't trust your service guy. Any service agent will know whether the door switch, thermal sensor or control panel is faulty by simply testing them. I would not have to fit complete parts to isolate the faulty part.
Sounds like he doesn't know how to or wants the job of fixing it.
Try an independant repair service, local one man repair shops tend to give an excellent service.
If you want Currys do a good range of fridge freezers; https://www.currys.co.uk/search?q=Liebherr+fridge-freezer+model+CPEL4813&search-button=&lang=en_GB

https://www.currys.co.uk/appliances/refrigeration/fridge-freezers/bosch?searchTerm=Bosch%20fridge%20freezer

https://www.currys.co.uk/appliances/refrigeration/fridge-freezers/hoover?searchTerm=hoover%20fridge%20freezer

To show just one retailer. There are many more out there. Try and buy locally if you can, you will get a better service I find.

I bought a Philips (Whirlpool) years ago and after 3 years, out of warranty, it packed up. The aluminium heat exchanger started leaking. Not worth repairing.
I now purchase Hoover. They has a 10 year parts warranty.
They are all 15 tears old now.
One gets what one pays for I suppose.

Does it have a battery backup the battery may be bad. If not you need to have a repair man look at it the controller may be bad.

Hi,

Many times a freezer and/or refrigeratordo not work right because of a dirty condenser coil...there are also many otherthings that can go wrong. If you are hearing a clicking or buzzing then check out thelast two tips.

If your refrigerator is running but warm, then...

Check out these tips that I wrote about that... it is a great place to starttrouble shooting your unit...and something that you can do rather then callinga repair person to do a simple thing for you...

Refrigerator Condenser Coil Cleaning Refrigerator Repair

Refrigerator Troubleshooting Refrigerator Compressor

Refrigerator Compressor Start Capacitor and Start Relay
Refrigerator or Freezer not Cooling or Getting Cold

heatman101

Rare but possible. I suggest that you order the part yourself and call a serviceman to install it for you. That may be a way to circumvent paying such an exorbitant price for servicing.

Hi, you have a common problem with your control boards; there is a cheap fix if you can use a soldering iron or you can have your modules repaired.
Let me know

bb

I had same issue. The control panel had been set to Sabbath mode. Hold down the "DOOR ALARM" button for 3 seconds. Then lights will turn on on both display windows. Scroll using the + and/or - sign on the left side display until "SAB" is shown. Then scroll using the + or - sign on the right side display until OFF is shown. Finally, hold the "DOOR ALARM" button down again for 3 seconds. All should be good to go!

Hi. you will need to replace this non functioning Control Panel asap and, test the light pressure switch for it's operational value. If the switch is OK, simply replace the bulbs.

I had probably the same problem. After a little discussion with the factory they sent a technician as a "Good Will Gesture." The technician told me it was the control board down by the compressor. I overheard a conversation between he and his central repair office that it was a common problem. The factory would not admit it. I have a feeling the electronic control board he replace (which would have cost several hundred bucks) was probably made in China. Now I'm having more problems with my Ohio made Whirlpool side-by-side. The freezer is working fine, the fridge is not very cold. By the way, the internal lights was one of the keys to the problems.

When replaceing the highvoltage control board be careful to not handle it too much as nano voltages can burn it. Unplug before repair. Simply hook it up the way you unhooked it very easy and in the left back of the fridge. Now that it's installed plug fridge in and push back to wall. Look at model tag and write down your code something like 0304 most likely. Go to digital control hold down door alarm and freezer - minus button for 3sec. then let off door alarm now you should see PE flashing the fridge wants personality code (the one you have wrote down). Let off minus now it should show 0000 now push minus once more a decimal should show up 0.000 the decimal indicates what number your about to change. Move the decimal with freezer plus button and lower or higher number setting with fridge side buttons.Once your done hold down freezer minus till the numbers are flashing then open any door and close. Now the fridge should be working properly.Hope I helped