1. Isingeniso
This manual provides detailed instructions for the installation, operation, and maintenance of the Danfoss 077B0021 refrigerator thermostat. This thermostat is designed for use in single-chamber refrigerators, including Pozis models and other compatible foreign manufacturers. Please read this manual carefully before installation and use to ensure proper function and safety.
2. Umkhiqizo Uphelileview
The Danfoss 077B0021 is a mechanical thermostat responsible for regulating the temperature inside your refrigerator. It features a capillary tube that senses temperature changes and activates or deactivates the cooling system accordingly.


3. Imininingwane
| Isici | Ukucaciswa |
|---|---|
| Inombolo Yemodeli | 077B0021 (Ita-x1041) |
| Uhlobo | I-Thermostat yesiqandisi |
| Capillary Tube Length | 1200 mm |
| Izinga Lokushisa | -27°C kuya ku-2°C |
| Cold On Temperature | -9.7°C (±2.0°C) |
| Cold Off Temperature | -21°C (±2°C) |
| Warm On Temperature | -2°C (±2°C) |
| Warm Off Temperature | -11°C (±2°C) |
| Isicelo | Single-chamber refrigerators |
| Imikhiqizo Ehambisanayo | Pozis, various other foreign manufacturers |
| Ukushintshwa Kwe | Ranco K50 P1550, K50 P-1133, ATEA A010800, TAM 112, K50 L3392, T-110, T-111 |
| Umbala | Okumpunga |
| Umsuka | I-Mainland China |
4. Ukufakwa
WARNING: Disconnect power to the refrigerator before attempting any installation or repair work to prevent electric shock.
- Ukuphepha Kuqala: Ensure the refrigerator is unplugged from the power outlet.
- Access the Old Thermostat: Locate the existing thermostat in your refrigerator. This is typically found near the temperature control dial or inside the refrigerator compartment. You may need to remove a control panel or cover.
- Nqamula Izintambo: Carefully note or photograph the wiring connections to the old thermostat. Disconnect all electrical wires.
- Remove Capillary Tube: Gently unroute and remove the capillary tube of the old thermostat from its position. The capillary tube is usually routed along the evaporator or inside the refrigerator wall to sense the temperature.
- Susa i-Thermostat endala: Khulula noma ukhiphe i-thermostat endala ebhodini layo lokuyifaka.
- Faka i-Thermostat Entsha: Mount the new Danfoss 077B0021 thermostat in the same location as the old one, ensuring it is securely fastened.
- Route Capillary Tube: Carefully route the new 1200mm capillary tube in the exact same path as the old one. Ensure the tube is not kinked, pinched, or damaged during routing. The end of the capillary tube must be placed in the correct temperature sensing location.
- Xhuma Izintambo: Reconnect the electrical wires to the new thermostat according to your previous notes or photographs. Ensure all connections are secure.
- Phinda uhlanganise: Shintshanisa noma imaphi amakhava noma amaphaneli akhishiwe.
- Isivivinyo: Plug the refrigerator back into the power outlet. Set the temperature control to a desired setting and monitor the refrigerator's operation to ensure it cools correctly and cycles on/off as expected.
5. Ukusebenza
The Danfoss 077B0021 thermostat operates automatically to maintain the set temperature within your refrigerator. The temperature is typically adjusted via a control dial connected to the thermostat shaft. Turning the dial will change the set point for the refrigerator's internal temperature.
- Ukulawula izinga lokushisa: Rotate the temperature control dial (not included with the thermostat, but connected to its shaft) to adjust the desired coldness. Lower numbers or 'Min' settings typically correspond to warmer temperatures, while higher numbers or 'Max' settings correspond to colder temperatures.
- Ukuhamba ngebhayisikili: The thermostat will automatically turn the compressor on when the temperature rises above the 'Cold On' or 'Warm On' set point and turn it off when the temperature drops to the 'Cold Off' or 'Warm Off' set point. This cycling maintains a stable internal temperature.
6. Isondlo
The Danfoss 077B0021 thermostat is a sealed unit and generally requires no direct maintenance. However, proper care of your refrigerator can help ensure its longevity and accurate operation.
- Keep Capillary Tube Undamaged: Ensure the capillary tube remains free from kinks, punctures, or damage. Any damage to the tube can affect the thermostat's ability to sense temperature accurately.
- Clean Refrigerator Regularly: Keep the interior of your refrigerator clean to prevent ice buildup on the evaporator, which can interfere with temperature sensing.
- Check Door Seals: Ensure refrigerator door seals are intact and functioning correctly to prevent warm air from entering, which can cause the thermostat to work harder.
7. Ukuxazulula izinkinga
If your refrigerator is not maintaining the correct temperature after replacing the thermostat, consider the following:
- Isiqandisi Asipholisi:
- Hlola Amandla: Qinisekisa ukuthi isiqandisi sixhunyiwe futhi siyawathola amandla.
- Izintambo ze-Thermostat: Double-check all electrical connections to the thermostat for looseness or incorrect wiring.
- Capillary Tube Placement: Verify that the capillary tube is correctly positioned in the temperature sensing area and is not damaged. Improper placement can lead to inaccurate temperature readings.
- Compressor Issues: If the thermostat is correctly installed and wired, but the compressor does not turn on, there might be an issue with the compressor or other electrical components.
- Refrigerator Too Cold/Freezing:
- Isilungiselelo Sezinga lokushisa: Ensure the temperature control dial is not set too low (too cold).
- Capillary Tube Contact: The capillary tube might be making too much contact with a very cold surface, causing the thermostat to sense a lower temperature than the actual air temperature.
- Thermostat Malfunction: Although new, a faulty thermostat could continuously call for cooling.
- Refrigerator Cycles Too Frequently:
- Izivalo zomnyango: Inspect door seals for leaks, allowing warm air to enter and causing the compressor to run more often.
- Ukulayisha ngokweqile: Overfilling the refrigerator can restrict airflow and make it harder to maintain temperature.
- Amakhoyili e-Condenser: Dirty condenser coils can reduce efficiency, causing the compressor to run longer. Clean them if necessary.
If troubleshooting steps do not resolve the issue, it is recommended to consult a qualified appliance technician.
8. Amathiphu Womsebenzisi
- When replacing the thermostat, take clear photos of the original wiring and capillary tube routing before disconnecting anything. This will serve as a valuable reference during installation.
- Be extremely gentle with the capillary tube. Bending it sharply or kinking it can damage the internal sensing fluid and render the thermostat inoperable.
- After installation, allow the refrigerator several hours to stabilize its temperature before making further adjustments to the thermostat setting.
9. Iwaranti kanye Nokusekela
For information regarding warranty coverage, technical support, or service, please refer to the documentation provided by your retailer or contact the manufacturer directly. Keep your purchase receipt as proof of purchase.





