Refrigeration equipment series Posis Paracelsus is deservedly popular due to its reliability and ability to keep food fresh for a long time. However, for efficient operation, it is critical to set the temperature correctly for the type of product being loaded and the environmental conditions. Errors in setting can lead to rapid spoilage of supplies or, conversely, to freezing of vegetables and fruits.
Adjustment of parameters in these models is carried out mainly mechanically, which eliminates complex electronic failures, but requires an understanding of the principles of operation of the thermostat. Owners need to take into account that temperature regime inside the chamber depends not only on the position of the handle, but also on the density of loading the shelves and the frequency of door opening. A competent approach to operation will extend the service life of the compressor.
In this article we will analyze in detail the algorithm of actions for setting optimal values, consider the features of the “Super Freeze” mode and answer frequently asked questions about operation. Understanding the physical processes occurring inside storage chamberswill allow you to avoid common mistakes and provide ideal conditions for your products.
Location and design of the thermostat
In most refrigerator models Posis Paracelsus the thermostat is located inside refrigeration chamber. It is usually located on the right side wall or on the top panel, closer to the lampshade. The device is a rotary mechanism with a scale that can be graduated with numbers from 1 to 5 (or 1 to 7) or have verbal designations such as “Min” and “Max.”
It is important to understand that the numbers on the scale do not directly indicate degrees Celsius. They point to intensity of the compressor. The higher the number you set, the colder it will be inside the chamber. Setting the regulator to the maximum value makes the unit work almost non-stop, which may be necessary only in emergency cases.
The design of the thermostat is sensitive to sudden changes in voltage and mechanical stress. If you notice that the handle turns too easily or, conversely, gets stuck, this may indicate a malfunction of the mechanism. In normal mode, rotation should be carried out with moderate force and clear fixation in each position.
⚠️ Attention: Never try to forcibly turn the thermostat knob beyond its natural course. This may lead to shaft breakage or damage to the bellows tube, which will require replacement of the entire assembly.
Optimal values for storing food
For everyday use, the most effective position of the regulator is considered to be the one corresponding to the middle values of the scale. In models with a numerical designation from 1 to 5, this is usually position 2 or 3. It is in this range that a balance is achieved between energy consumption and cooling quality, providing a temperature of about +4...+5°C.
If you load a large number of products at room temperature, it makes sense to temporarily increase the cooling. However, after the processes have stabilized (usually after 5-6 hours), it is recommended to return the settings to standard mode. Constant operation at limit values increases the load on motor-compressor and leads to accelerated wear of parts.
Different zones inside the refrigerator have different temperatures. The bottom shelf, above the vegetable drawers, is usually the coldest, and you can store meat and fish there in the future. On door shelves, the temperature is higher due to frequent contact with the warm air of the room, so it is better to place sauces, drinks and foods with a long shelf life there.
Instructions for changing the temperature mode
The setting process is extremely simple, but requires following a certain sequence of actions to achieve a stable result. Before you start making adjustments, make sure that the door is tightly closed and there are no active defrosting processes or loading hot dishes inside.
To change the parameters, follow these steps:
- 🌡️ Open the refrigerator door and find the thermostat knob.
- ❄️ Turn the knob to in the desired direction: clockwise to increase the cold, counterclockwise to weaken it.
- ⏳ Close the door and wait at least 2-3 hours to stabilize the temperature background.
- 🔍 Check the result and, if necessary, carry out a repeat (fine tuning).
You should not expect an instant change in temperature immediately after turning the knob. Thermal sensitive element should register a change in conditions, and the compressor needs time to work. Sharp changes in settings will not speed up the process, but will only destabilize the operation of the system.
☑️ Check after setting
Using the Super Freeze mode
Many models Posis Paracelsus equipped with a switch Super Freeze mode (often indicated by a snowflake or asterisk). This function is designed for quick freezing of a large volume of fresh food in the freezer or for accelerated cooling of the refrigerator compartment in hot weather.
When this mode is activated, the refrigerator starts working without stopping, ignoring the readings of the refrigerator compartment thermostat. This allows you to quickly reduce the temperature to minimum values. However, it is strictly forbidden to use this mode all the time, as this leads to compressor overheating and significant excessive energy consumption.
It is recommended to turn on “Super Freeze” a few hours before loading the products or immediately after it, leaving it active for a period of 12 to 24 hours. After the food has frozen, the switch must be returned to its original position for the device to return to normal operation.
⚠️ Attention: Prolonged use of the super-freeze mode (more than 30 hours) can lead to freezing of the evaporator and difficulty in heat transfer. Be sure to turn off the function after achieving the result.
What happens if you forget to turn off super freezing?
If you leave the mode on for several days, the food in the refrigerator may freeze, the glass shelves may burst due to temperature changes, and the compressor may fail due to continuous work without rest.
The influence of external factors on the operation of the refrigerator
The efficiency of the refrigerator Posis Paracelsus directly depends on operating conditions. In summer, when the room temperature exceeds +25°C, the unit requires more time to cool down. In such cases, a slight adjustment of the thermostat in the direction of increasing cold is allowed.
In winter, if the refrigerator is in an unheated room or in a kitchen with a low temperature, the situation changes. When the ambient temperature is below +10°C, the compressor may stop turning on, since the thermostat “thinks” that it is already cold enough inside. To work in such conditions, you may need winter kit or installation in a warmer place.
It is also important to consider the loading density. An empty refrigerator cools down faster, but holds the temperature worse when the door is opened. A fully clogged unit requires more energy for initial cooling, but then operates more reliably. It is optimal to fill the chamber volume by 70-80%.
| Environmental factor | Recommended action | Risk of ignoring |
|---|---|---|
| High humidity | Check seals | Ice formation |
| Room temperature > +30°C | Increase cooling (+1 division) | Undercooling of products |
| Direct sun rays | Shade or rearrange | Compressor overheating |
| Dense loading | Leave gaps at the rear wall | Impaired circulation |
Typical errors and problem diagnosis
Often users are faced with a situation where setting the temperature does not give the expected result. For example, the chamber is too cold even at the minimum regulator settings. This may indicate sticking of the thermostat contacts or a refrigerant leak, which requires the intervention of a technician.
Another common problem is the formation of a “fur coat” or ice crust on the back wall. If this occurs with standard settings, the door seal may be broken or the defrost sensor may be faulty. In models with drip system a small amount of ice is normal, but it must have time to melt during idle cycles.
If the refrigerator is humming louder than usual or the operating cycles have become too short, check to see if the unit is standing too close to the wall. The gap between the rear condenser grille and the wall must be at least 5-7 cm for normal ventilation.
⚠️ Attention: Technical characteristics and control interface may vary slightly depending on the year of manufacture of a particular modification. Posis Paracelsus. Always check the product data sheet if standard methods do not work.
Frequently asked questions (FAQ)
Why do vegetables freeze in the Posis Paracelsus refrigerator?
Most likely, the thermostat is set to the maximum value (4-5) or the sensor itself is faulty. Try reducing the cooling power to 2. Also check whether the products are located close to the back wall, where the temperature is always lower.
What temperature should be in the freezer of this model?
For standard storage of supplies, the optimal temperature is -18°C. If you use the super-freezing mode, it can drop to -24°C, but for permanent storage this is excessive and energy-consuming.
Is it possible to adjust the refrigerator if the knob spins endlessly?
No, this is a sign of a broken thermostat. In good condition, it should have clear “click” positions or stops. Infinite rotation indicates that the mechanism does not control the contacts and the part needs to be replaced.
How often do you need to defrost the Posis Paracelsus?
Despite the presence of a drip-type automatic defrosting system, it is recommended to completely defrost and wash the refrigerator 1-2 times a year. This will help maintain efficient heat transfer and hygiene.
Does the filling of the chambers affect the temperature setting?
Yes, it does significantly. An empty refrigerator responds faster to opening the door and heating. If you store a minimum of food, it makes sense to set the regulator to a value slightly below average to compensate for the low heat capacity of the contents.