Thermostat in the Indesit No Frost refrigerator: where it is and how to find it

Refrigerators Indesit with a system No Frost are popular due to ease of use and no need for manual defrosting. However, even in such models, problems sometimes arise with maintaining the temperature, and the thermostat (or thermostat) is often to blame. This small but critical element is responsible for turning the compressor on/off, maintaining the set temperature.

If your refrigerator Indesit No Frost stops freezing, constantly works without stopping, or, conversely, turns on too rarely, the first thing you should check is the thermostat. But where to look for it? Unlike older models with a drip system, the location of the thermostat may differ - it is not always visible during a superficial inspection. In this article, we will look in detail at where the thermostat is located in refrigerators No Frost The location of the thermostat may differ - it is not always visible upon superficial inspection. In this article we will look in detail at where the thermostat is located in refrigerators. Indesit No Frost of different series, how to identify it and what to do if it fails.

Before you start searching, please note: in systems No Frost the thermostat is often integrated with an electronic control unit or hidden behind the panel. Some models Indesit (for example, series C 132 NF or T 16 NF) have a classic thermostat, and in new models (for example ITF 118 W) its functions can be performed by a temperature sensor. To avoid confusion, we have structured the information by type of system and year of manufacture.

How the thermostat in No Frost differs from drip models

In traditional refrigerators with drip defrosting, the thermostat is usually located inside the refrigeration chamber - it can be seen under a plastic cover or next to the lighting lamp. In systems No Frost everything is different:

• 🔹 No mechanical thermostat — in most modern models Indesit No Frost instead of a classic thermostat, electronic temperature sensors (thermistors) are used, which transmit signals to the control board.
• 🔹 The location depends on the No Frost type:
  • Full No Frost (full No Frost) - sensors can be in both chambers.
  • Frost Free (No Frost only in the freezer) - the thermostat or sensor is most often located in the freezer compartment.
• 🔹 Integration with an electronic unit —in models with a display (for example, Indesit ITF 118 W), thermoregulation is carried out through a microprocessor, and a physical thermostat may be absent.

This does not mean that in Indesit No Frost there is no thermostat at all. In some series (for example, C 132 NF or B 18 NF) it is stored in a simplified form, but hidden under the back panel or in the technical compartment. The main difference is that in No Frost the thermostat rarely acts as a separate repairable unit, but is part of a complex control system. Attention: If your refrigerator was produced after 2018, there is a high probability that an electronic sensor is used instead of a mechanical thermostat. In this case, replacing the thermostat may require flashing the board or calibrating the sensors. in No Frost, the thermostat rarely acts as a separate repairable unit, but is part of a complex control system.

⚠️ Attention: If your refrigerator Indesit released after 2018, there is a high probability that an electronic sensor is used instead of a mechanical thermostat. In this case, replacing the thermostat may require flashing the board or calibrating the sensors.

Where to look for the thermostat in the Indesit No Frost refrigerator: step-by-step instructions

To find the thermostat, first determine the model of your refrigerator (it is indicated on the sticker inside the chamber or on the back wall). This will help you understand which No Frost system you are dealing with. Next, follow the algorithm:

1. Disconnect the refrigerator from the network and take out all the products.
2. Remove shelves and drawers in the refrigerator compartment (if you are looking for a thermostat there) or in the freezer (if the system is Frost Free).
3. Inspect the back wall of the chamber:
   • In models Indesit C 132 NF, T 16 NF the thermostat can be hidden under a plastic panel at the back.
   • In Indesit ITF 118 W and similar, the temperature sensor is usually attached to evaporator (behind the back wall).

Check the top panel — in some models the thermostat is located next to the light lamp.

Look into the technical compartment (if there is access from the back of the refrigerator). Full No Frost sensors can be placed there.

If you do not find the thermostat inside the chambers, it means it is either electronic (built into the board) or hidden behind the back panel. In this case, you will need to disassemble the refrigerator.

Photos and diagrams of the thermostat location in popular Indesit No Frost models

Below is an overview of the location of thermostats (or temperature sensors) in the most common models Indesit No FrostPlease note: in some cases, instead. a classic thermostat is used thermistor (small black or white sensor on the wires).

If your model is not in the table, focus on type of system No Frost:

• B Frost Free (No Frost only in the freezer) the thermostat is almost always in freezer compartment.
• In Full No Frost temperature sensors can be in both chambers, and the thermostat (if any) can be in the technical compartment.

How What does the thermostat look like in Indesit No Frost?

Usually it is a small box 2-4 cm in size with a plastic case and a capillary tube coming out of it (in mechanical versions) or thin wires (in electronic sensors). thermostat: when it needs to be checked

Signs of a bad thermostat: when to check it

Before disassembling the refrigerator, make sure that the problem is really in the thermostat. The following symptoms may indicate its malfunction:

• ❄️ The refrigerator does not cool, but the light inside is on and the compressor does not turn on.
• 🔥 The compressor runs without stopping, but the temperature in the chambers does not drop to the required level.
• ❓ Spontaneous shutdown the refrigerator (for example, 5-10 minutes after turning on).
• 🌡️ Temperature mismatch the specified settings (for example, in the freezer +10°C instead of -18°C).
• 🔊 Clicks or crackling from the thermostat area (in mechanical versions).

However, these same symptoms may indicate other breakdowns:

• Malfunction compressor or start relay.
• Freon leakage freon.
• Problems with control board (in electronic models).
• Clogging capillary tube.

To accurately diagnose the thermostat, it must be ring with a multimeter or replaced with a known working one. In mechanical thermostats, most often the contacts fail (lose their tightness) or contacts (oxidize). In electronic sensors, the calibration usually gets lost. capillary tube (loses tightness) or contacts (oxidize). Electronic sensors usually get miscalibrated.

⚠️ Attention: If the refrigerator Indesit No Frost is equipped with a display and electronic control, do not rush to change the thermostat. First check control platform - often a failure in its operation simulates a malfunction of the sensors.

How to check and replace the thermostat yourself

If you find the thermostat and suspect it of a malfunction, follow this algorithm:

1. Checking the mechanical thermostat

For testing you will need a multimeter:

1. Disconnect the wires from the thermostat (take a photo of their location!).
2. Switch the multimeter to mode continuity.
3. Attach the probes to the thermostat contacts. At room temperature, the contacts should be closed.
4. Place the thermostat in cold water (for example, with ice). After 1-2 minutes, the contacts should open.

If the contacts do not open or close, the thermostat is faulty. Models Indesit No Frost often use a thermostat type K59 or Danfoss 077B6 (analogues are interchangeable).

2. Checking the electronic sensor

Electronic sensors (thermistors) are checked by measuring resistance:

1. Disconnect the sensor from the board.
2. Measure the resistance at room temperature (usually 4–6 kOhm).
3. Place the sensor in cold water - the resistance should increase.
4. If the resistance does not change or is equal 0/∞ the sensor is faulty.

3. Replacing the thermostat

For replacement:

1. Buy a similar thermostat (for Indesit No Frost suitable K59-L1411, Danfoss 077B6340 or Ranco K59).
2. Carefully remove the old thermostat without damaging the capillary tube (in mechanical versions).
3. Install a new one, connecting the wires in the same order.
4. Check the operation of the refrigerator.

Common mistakes when finding and replacing a thermostat

Even experienced technicians sometimes make mistakes when working with thermostats Indesit No Frost. Here are the most common ones:

• 🔧 The thermostat is confused with the defrost sensor —they may look similar, but they perform different functions. Defrost sensor. is responsible for defrosting the evaporator, and the thermostat is responsible for the temperature in the chamber.
• 🔌 The wires are connected incorrectly - this can lead to a short circuit or failure of the control board.
• ❄️ Ignore the capillary tube —in mechanical thermostats it must not be bent or damaged, otherwise the thermostat will not work correctly.
• 📱 Do not reset settings after replacement —in electronic models, a new sensor may require calibration.
• 🛠️ Do not check the control board —in 30% of cases the problem is not in the thermostat, but in the electronics.

If after replacing the thermostat the refrigerator still does not work, check:

• Compressor start relay —it may burn out due to overload.
• Freon condition —if there is a leak, the compressor will run idle.
• Board control —in models with a display it often fails.

⚠️ Attention: In refrigerators Indesit No Frost releases after 2020, the thermostat can be integrated into the control board. In this case, replacing only the thermostat will not help - repair or replacement of the entire electronic unit will be required.

FAQ: Frequently asked questions about the thermostat in Indesit No. Frost

Is it possible to repair the thermostat or just replace it?

Mechanical thermostats (with a capillary tube) cannot be repaired - they are only replaced. Electronic sensors cannot be repaired either, but sometimes cleaning the contacts helps. If the problem is oxidation of the contacts, they can be cleaned with alcohol or an eraser.

Which thermostat is suitable for Indesit C 132 NF?

Thermostats K59-L1411, Danfoss 077B6340 or Ranco K59-N1411are suitable for this model. The main thing is that the new thermostat has a similar temperature range (usually from -30°C to +10°C).

What to do if after replacing the thermostat the refrigerator does not turn on?

Check:

1. The correct connection of the wires (compare with the photo before replacement).
2. The state of the fuse on the control board.
3. Voltage in socket (the automatic circuit breaker may have worked).

If everything is in order, but the refrigerator does not work, the problem may be in the control board.

Is it possible to temporarily operate the refrigerator without a thermostat?

No, this will lead to two possible scenarios:

• Compressor will work continuously, which will lead to its overheating and breakdown.
• Compressor will not turn on, and the refrigerator will defrost.

In both cases, the risk of failure of other components is very high.

How much does it cost to replace a thermostat in a service center?

The cost depends on the model and type of thermostat:

• Replacement of a mechanical thermostat - 1500–2500 rubles (c spare part).
• Replacement of the electronic sensor — 2000–3500 rubles.
• Diagnostics (if the reason is not in the thermostat) — 500–1000 rubles.

In models with electronic control, the price may be higher due to the need for calibration.