Determination of the exact production date household appliance - a task that many equipment owners face when purchasing a used unit or ordering spare parts. Often the usual date sticker is missing from the front panel or documentation, which forces you to look for alternative ways to obtain information. Factory serial number contains encrypted information, which, with proper skill, can be decrypted without contacting a service center.
In this article we will analyze in detail the algorithms for encoding the production date for the most popular brands of refrigerators. You will learn to find hidden symbols and understand the logic of manufacturers, which will allow you to accurately determine the age of your equipment. This knowledge is critical for assessing the residual life of the compressor and the correct selection of consumables.
Most modern models have a single encryption associated with specific characters in a long line of code. However, each brand has its own unique rules, ignoring which will lead to an error. Therefore, it is important not only to find the numbers, but also to correctly interpret them in the context of a specific manufacturer.
Where to look for the serial number on the refrigerator
The first step to identifying the age of the device is to locate the information plate, known as a nameplate. Depending on the brand and model, the manufacturer may place it in different locations, often choosing areas that are hidden from view during normal use. Most often, look for a metal or paper sticker inside the refrigerator compartment.
The standard placement location is the side wall inside the refrigerator compartment, sometimes closer to the vegetable shelves. In some models, especially built-in ones, the plate is hidden on the base (lower decorative panel) or on the back wall of the case. If there is nothing inside the camera, inspect the end of the door or the space behind the drawers.
⚠️ Attention: do not try to tear off the sticker or rub it vigorously with aggressive chemicals, as you can erase some of the symbols, which will make decoding impossible.
On the nameplate you are interested in the line marked as Serial No, S/N or simply “Serial number”. It is this combination of letters and numbers, usually consisting of 8 to 15 characters, that contains the desired date. Do not confuse it with the model number (Model), which indicates the type of design, and not a specific instance.
Deciphering the codes of refrigerators Indesit, Ariston and Hotpoint
The equipment produced by the Whirlpool concern (including the brands Indesit, Ariston, Hotpoint-Ariston) uses one of the most logical and convenient coding systems. You don't need complex tables to determine the year of manufacture, since the date is often written explicitly at the beginning of the line. This greatly simplifies the process for owners of such units.
The serial number usually begins with two numbers followed by a letter. The first two digits indicate the year of production, and the next letter encodes the month. For example, if the code begins with 15 K.., then the refrigerator was released in 2015. The month is determined by the serial number of the letter in the English alphabet: A - January, B - February, and so on.
However, it is worth considering the exception for the letter I, which manufacturers often skip so as not to confuse it with the number 1. Therefore, after the letter H (August), J (September) can immediately come. If you see the code 18 J.., then you have a September 2018 model.
- 🔍 The first two digits are the year (for example, 19 = 2019).
- 🔍 The third character (letter) is the month of production (A=January, L=December).
- 🔍 The rest of the code is a unique identifier of the batch and conveyor.
In such cases, the first two digits can indicate the week of production, and the year can be encoded with one number or letter at the end of the line, but this is becoming less common.
📊 What brand of refrigerator do you have?Indesit/AristonBosch/SiemensLG/SamsungAnother brand
Determination of the age of Bosch and Siemens refrigerators
German engineering represented by the companies Bosch and Siemens (BSH Hausgeräte) uses a more complex encryption system, where the year of manufacture is encoded at the very beginning of the serial number, but not explicitly. You will need to carefully look at the first numbers on the nameplate. Typically, the code begins with a letter Ffollowed by numbers.
The key point here is the third digit in the sequence. It is she who indicates the last digit of the year of manufacture. For example, if the serial number begins with FD 95.. or FD 05.., then we are talking about 2019 or 2005, respectively. The first digit (9 or 0) in this context is the year.
The month of production is also encrypted, but in the second digit after the letters FD. If the second digit is greater than 12, then 12 must be subtracted from it. For example, the code FD 98.. means the 8th month (August), and FD 9(1)5.. (where 15) means the 3rd month (March). This rule is relevant for most modern models.
There is a nuance with the decade: the number 9 can mean 1999, 2009, or 2019. Here you need to focus on the design of the model, the availability of the system No Frost and the general technical condition of the device. A visual assessment often helps to cut off extra decades.
⚠️ Attention: in some older Bosch models, the encoding could begin with the letter Z, where the year was determined differently, so for equipment older than 15 years it is better to check the documentation.
Samsung and LG encoding system
Korean giants Samsung and LG use similar, but not identical, labeling principles. For Samsung, the serial number often starts with two letters followed by a date code. However, the most reliable way is to search for a combination where the year and month are indicated in numbers. In new models, this may be an explicit indication, for example, 2021.05 somewhere in the middle of the line.
In the classic Samsung scheme, if the code begins with letters, then the year of manufacture is often encoded with a letter or number after them. For example, the letter R may correspond to 2016, S — 2017, T —2018. However, this correspondence table changes, and for an accurate determination it is better to look for an 8-digit date code in the format YYMMDD, which is sometimes duplicated separately.
For LG refrigerators the situation is simpler: the first three digits of the serial number often indicate the date. The first digit is the year (last digit of the year), the second and third are the month. For example, the code 705.. means May 2017 (or 2007). If the month is two-digit (October, November, December), then the code will consist of 4 digits at the beginning: 111.. — November.
- 🔍 Samsung: look for 8 digits in the YYMMDD format or an alphabetic year code.
- 🔍 LG: the first 3-4 digits are the year and month (701 = January 2017).
- 🔍 General: always check for a separate date sticker on the case.
It is worth noting that for equipment assembled in factories in Russia, the marking can be adapted to local standards and contain more understandable dates. In such cases, look for the words “Date of Manufacture” next to the serial number.
Why may the dates not match?
The date on the serial number is the date the components were manufactured or left the assembly line. The date of sale indicated in the warranty card may differ by several months due to logistics and storage in the store's warehouse.
Table of correspondence of letters to years for different brands
Many manufacturers, such as Electrolux, Zanussi, AEG, as well as some models of other brands, use the letter designation of the year of manufacture. This requires a special table for decoding, since it is impossible to remember the correspondence of each letter to a specific year. Usually the letter is located at the beginning or in the middle of the serial number.
Below is a table that will help you navigate the letter designations. Please note that the cycle of 26 letters is repeated, so it is important to take into account the approximate age of the equipment so as not to confuse, for example, 2002 with 2028.
Letter
Year of manufacture
Note
A
2010, 2026
Beginning cycle
B
2011, 2026
Standard step
C
2012, 2026
Often
D
2013, 2027
After C
E
2014, 2028
Middle of the cycle
For older models released in the 90s and early 2000s, the letters went to in reverse order or other logic was used (for example, Y=1999, X=1998). If your refrigerator looks very old and the letter corresponds to next year, then a countdown is being used.
The Electrolux brand often uses an 8-digit code, where the first two digits are the year and the next two are the week. For example, 09 32.. means the 32nd week of 2009. This is one of the most transparent formats on the market.
Why do you need to know the exact year of manufacture
Many users neglect to search for the production date, considering it unnecessary information. However, knowing the exact age of the refrigerator is critical when selecting spare parts. Compressors, thermostats and start relays vary depending on the modification, which is tied to the year of manufacture.
In addition, age affects the assessment of energy efficiency. Refrigerators manufactured more than 10-12 years ago, even when operating properly, can consume 40-50% more electricity than modern class models A+ or A++. Replacing an old but working unit with a new one can pay for itself in 3-4 years only by saving electricity.
Also, the production date is important for verifying the authenticity of the warranty case. If more than 3-5 years have passed since release (the standard period for compressors for some brands), then even with a receipt, the warranty may not apply to the main components.
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Frequent errors when decoding
The most common mistake is confusion between the model number and the serial number. Model is usually shorter, contains more letters and is repeated on all refrigerators of the same series. The Serial number is always unique for each specific instance. Look for the date in the serial number.
The second mistake is the incorrect definition of the decade. The number 5 in the code can mean 2005, 2015 or 2026. Here you need to include logical thinking: if a refrigerator has a system No Frost and electronic control, it is unlikely to be manufactured in 1995. A visual inspection of the design and interface will help weed out unnecessary options.
⚠️ Attention: if you are not sure of deciphering the code, do not buy expensive spare parts (for example, a compressor) without consulting a specialist who can read errors from the control board.
Sometimes the sticker can be damaged or worn out. In this case, you can try to find the date on the original packaging (if it is preserved) or on the warranty card, although it often contains the date of sale, not production. The difference can be from 1 to 6 months.
Is it possible to find out the year of manufacture from a photo of the nameplate online?
Yes, there are specialized services and forums where enthusiasts and craftsmen help decipher complex codes. However, automated online calculators do not work for all brands. For an accurate result, it is better to go to the manufacturer’s official website by entering the full serial number in the support section.
What to do if the sticker with the number is completely lost?
If the nameplate has come off and is lost, it is extremely difficult to determine the exact production date. You can try to find a duplicate sticker on the back wall (rare) or contact the service center with a request to read the date from the memory of the electronic control board, if it is stored there.
Does the year of manufacture affect the possibility of repair?
Yes, for very old models (over 15-20 years old) spare parts may be discontinued. Knowing the exact year helps you understand whether it makes sense to look for original components or whether it is easier to replace the unit with a universal analogue.