Owners of household appliances often face the need to accurately determine the age of your equipment. For refrigerators Bosch this is especially true when searching for original spare parts, issuing a warranty, or assessing the residual life of a compressor. Manufacturers do not always indicate the calendar date explicitly on the front panel, hiding this information in the serial number code.
Understanding how to decipher this data allows you to avoid errors when ordering filters or repair kits, which may differ depending on the year of modification. Serial number is a unique identifier containing encrypted information about manufacturer, date of assembly and specific model of the unit.
In this article we will analyze in detail the algorithms for searching for marking plates on various series of refrigerators and learn how to correctly interpret alphanumeric combinations. The accuracy of date determination is important for service center specialists and ordinary users.
Location of the identification plate
The first step in the identification process is the physical search for the nameplate with technical information. In refrigerators Bosch the location of this sticker is standardized, but may vary depending on the year of manufacture and type of design (built-in or free-standing). Most often, manufacturers place information on the inner wall of the refrigerator compartment.
Carefully inspect the side walls of the refrigerator compartment. Usually the sign is glued to the left wall, approximately at the level of the middle shelf or slightly higher. On some models, especially older or built-in models, the sticker may be located on the end of the door or even on the base of the cabinet if you remove the decorative panel.
⚠️ Attention: Never use sharp objects or harsh chemical solvents to clean the area around the sticker, as this may erase the factory markings, making it impossible to identify the model.
If the label is not found on the inner surface of the camera, check the back wall of the device. To access it, you often need to move the refrigerator away from the wall. On the back metal panel, usually in the upper or middle part, duplicate information about technical characteristics and production date can be knocked out or pasted.
For built-in models, access to the rear panel may be difficult due to the kitchen unit. In this case, it is worth checking the upper end of the door or the space above the door, if the cabinet design allows it. Sometimes brief information is duplicated in the technical passport, which is supplied in the kit.
Structure of the serial number (FD code)
The key element for determining the age of the equipment is the so-called FD code. This is a combination of letters and numbers that directly indicates the date of manufacture. On the plate it is often indicated as F-D No. or simply contained in a long line E-Nr (product number). In modern Bosch models, the production date code is often highlighted separately or is part of a line under the barcode.
The standard date code format for Bosch, Siemens, Neff and other BSH brands looks like a combination of one letter and three numbers (for example, H205). The first letter indicates the year of production, and the next three digits indicate the month and additional information about the shift or week. It is important not to confuse this code with the model number.
Why does the code consist of letters and numbers?
Using an alphanumeric code allows the 25-year production cycle to be encoded in a compact format. The letters of the Latin alphabet (excluding I, O, Q to avoid confusion with numbers) correspond to the years in the cycle.
For correct decoding, you need to know which letter corresponds to which year. The cycle of coding years begins from a certain starting point. For example, the letter A could represent 1995 or 2020, depending on the 25-year cycle. Below is a correspondence table for the current period.
| Letter code | Year of production | Full code example |
|---|---|---|
| V | 2016 | V205 |
| W | 2017 | W112 |
| X | 2018 | X098 |
| Y | 2019 | Y340 |
| A | 2020 | A155 |
The letter is followed by three digits. The first one indicates the month of production. If the code A205, then the number 2 means February. The last two digits often indicate the week of production or shift number, which is important for internal quality control of the plant, but for the user it is the year and month that are critical.
Deciphering codes by year
To accurately determine the age of your refrigerator Bosch, you need to compare the first letter of the FD code with the calendar year. Since the alphabet is shorter than the history of the company, the encoding is cyclical. However, knowing the approximate age of the equipment (bought new 5 years ago or inherited from parents 15 years ago), you can easily choose the right cycle.
Let's consider a detailed decoding for recent years. If you see a code starting with U, it's 2015. Code V is 2016. The letter corresponds to 2017, and the letter corresponds to 2018. For equipment released in 2019, the letter W corresponds to 2017, and X — 2018. For equipment released in 2019, the letter is used Yis used. Since 2020, the cycle often starts anew or continues with the letter A (depending on the specific plant and series, but more often A=2020, B=2021).
It is important to consider that the letters I, O and Q are usually skipped in the markings to avoid visual confusion with the numbers 1 and 0. Therefore, after the letter H there can be a J immediately, and after P - R. This is standard labeling practice for many European electronics manufacturers.
⚠️ Attention: If your refrigerator was manufactured before 1995 or after 2026, the letter matching rule may shift by one 25-year cycle. For very old equipment (the 90s), the letter A may mean 1995, not 2020.
The second to fourth digits in the date code are used to determine the month. For example, in the code K091: the letter K indicates 2009 (or 1984/2034), the first digit 0 is October (10th month), and 91 is a qualifying code. If the code A155, then 1 is January, 55 is the shift code.
Features of models of different series
Refrigerators Bosch are divided into various series, such as Classixx, VarioPerfect, Serie 2, Serie 4, Serie 6 and Serie 8. Despite differences in functionality and design, the principle of marking the production date remains the same throughout the BSH group. However, the location of the plate itself may vary.
In premium series, such as Serie 8 with system NoFrost and metal trim, the plate is often made in the form of an engraving on the metal or pasted on the inside surface of the refrigerator door so as not to disturb the aesthetics. In budget series, such as Classixx, the sticker can be paper and located on the side wall.
Built-in series models Integra or Serie 4 Built-in often have additional markings on the end of the door. This is due to the fact that after installation in a niche, access to the internal walls of the chamber may be blocked by products or shelves, and access to the rear wall is completely blocked by furniture.
Some older models, released before the mass introduction of uniform BSH standards (before the early 2000s), may have had a different coding system. In such cases, it is recommended to look for the full model designation (E-Nr) and check it through the official spare parts catalogs, which indicate the start and end date of production of this modification.
Checking by model number (E-Nr)
If the FD code is damaged or unreadable, the main tool remains the model number, designated as E-Nr (for example, KGN39XI306). This number consists of letters and numbers and is a unique identifier of the device type. It itself does not contain a direct date, but allows you to find exact specifications.
By entering the E-Nr on the official Bosch support website or in specialized spare parts databases (for example, BSH-Home), you can access the product card. Technical documents (explosion diagrams) often indicate the production period of a given model, for example: “Production from 09.2018 to 05.2021.”
Example of input for search: KGN39XI306/01Pay attention to the suffix after the model number (through a slash, for example, /01, /02). This is the modification number. If you are changing a part, it is important to consider that in later modifications (/03, /04) the design of the components may have changed, even if the year of manufacture coincides with earlier versions.
☑️ Check the data before ordering spare parts
Using the model number is especially effective when you are looking for information about the compatibility of filters or cooling systems that may have been updated within the same model range in different years.
Frequent errors when determining the date
When trying to find out the year of manufacture, users often make mistakes that lead to ordering the wrong parts or incorrectly assessing the condition of the equipment. One of the most common mistakes is confusion between the year of development of the model and the year of manufacture of a particular instance. The model may be in production for 5-7 years, and your refrigerator may be released at the end of that cycle.
Another mistake is trying to use the purchase date as the production date. Between production, transportation, warehousing and sale, it can take from 3 to 12 months. To determine the real age of the compressor and refrigerant, it is the date on the nameplate that is important, not the date on the receipt.
⚠️ Attention: Do not rely on the appearance of the equipment to determine age. Models Bosch can maintain the current design for 10 years, so a refrigerator produced in 2012 may look identical to a model from 2020.
Also, users often ignore the cyclicity of letter codes. If you see a letter Ait could be 1995, 2020 or 2045. The context (the condition of the rubber bands, the presence of a digital display, the type of refrigerant R600a or R134a) will help to understand which cycle we are talking about. For modern technology, the cycle is relevant, where A = 2020.
FAQ: Frequently asked questions
Where is the serial number if the sticker inside the chamber has come off?
If the inner sticker is damaged, check the back metal wall of the refrigerator. Often a duplicate number is stamped there or an additional label is affixed. Also, the full model number (E-Nr) is always indicated in the warranty card and operating instructions, if they have been preserved.
Is it possible to find out the production date by the sound of the compressor?
No, this is a myth. While older compressors may be noisier due to wear and tear, modern inverter models are quiet regardless of age. Only the marking will show the exact date. Older models (before 2010) more often used R134a refrigerant, and new ones used R600a, but this is only an indirect sign.
What does it mean if the letter in the date code does not match the table?
This may mean that the refrigerator was released in a different 25-year cycle (for example, in the 90s) or belongs to specific industrial series. It is also possible that the sign was replaced during renovation. In this case, focus on the model number (E-Nr) to search for information in the manufacturer’s archives.
Does the year of manufacture affect the energy consumption of the refrigerator?
Yes, significantly. Refrigerators Boschmanufactured before 2010-2012 more often have energy consumption class A or A+. Models manufactured after 2015-2017 typically achieve classes A++, A+++ and higher due to improved insulation and inverter compressors. The year of manufacture helps to understand the real energy consumption.
How to find out the year of manufacture if the refrigerator was imported from Europe as a parallel import?
The principle of marking the FD code remains the same for all factories of the BSH concern (Germany, Poland, Türkiye, China). Regardless of the country of assembly and delivery channel, the date code on the nameplate is deciphered using the universal table of letters and numbers described in the article.