Tiering the Indesit refrigerator relay: instructions with photos and diagrams

The refrigerator Indesit stopped freezing, and the compressor does not start or runs jerkily? In 70% of cases, the problem lies in start relay a small device that is responsible for turning on the motor. You can ring the relay yourself in 15 minutes, having a multimeter and a screwdriver on hand. But before you take up the tools, it is important to understand: relay malfunction is often disguised as a breakdown of the compressor or thermostat.

This article will help you determine exactly whether the relay is to blame for the problems of your Indesit. We will look at:

- how to find the relay in the refrigerator and dismantle it without the risk of damaging parts;

- what contacts and how to call with a multimeter (with photos and diagrams);

- typical “symptoms” of a burnt relay and how to distinguish them from problems with the compressor;

- what to do if the relay is working properly, but the refrigerator still does not work.

⚠️ Attention: In refrigerators Indesit manufactured after 2018, electronic relays with control boards can be installed. Their diagnostics differ from classic mechanical relays - read about this in the section about modern models.

1. Where is the relay located in the Indesit refrigerator and how to remove it

The relay is attached directly to compressor a metal cylinder at the bottom of the refrigerator (usually at the back). In models Indesit it can be:

• 🔧 External - a plastic box with terminals put on the compressor (classic models like Indesit BIAA 13 or C 132 G).
• 🖥️ Built-in - hidden under the compressor cover (modern inverter models, for example Indesit EWD 8140).
• 🔌 Remote - in the control unit on the back wall (rare, but found in refrigerators with a system No Frost).

To dismantle relay:

1. Disconnect the refrigerator from the mains and remove the plug from the socket.
2. Move the refrigerator away from the wall (30–40 cm is enough).
3. Remove the bottom protective panel (if any) - it is secured with latches or screws.
4. Find the compressor (black cylinder with tubes) and the relay on it. Simply remove the external relay by pulling up or pressing the latches. The built-in one will require you to unscrew the compressor cover.

Do not pull the wires! The relay terminals are fragile - if you break them, you will have to solder new ones or buy the entire relay assembly. relay Indesit and where the contacts for testing are located:

2. What tools will be needed for checking

To diagnose a relay, a minimal set is sufficient:

If you don’t have a multimeter, you can use test lamp (light bulb 220V with wires), but this method is less accurate and dangerous - it requires applying voltage to the relay. For beginners, we recommend getting a multimeter (costs from 300 rubles).

Important: Before checking, make sure that the multimeter is working properly. Ring the probes together - it should appear on the screen. 0.0 Ω (or a similar value).

3. Diagram and step-by-step instructions for testing the relay

The classic relay Indesit has 3-4 contacts (depending on the model). Designations:

• 🔌 L (or 2) - phase input (220V power supply).
• 🔄 M (or 1) - compressor output.
• ⚡ S (or 3) - starting contact.
• 📏 C (or 4) - common contact (not available in all models).

Checking procedure:

1. Set the multimeter to the continuity mode (diode icon or 200Ω).
2. Ring the contacts L i M:
   • 🔴 At room temperature, the relay should be open (on the multimeter screen - 1 or OL).
   • 🟢 If the contacts are closed, the relay is “stuck” and must be replaced.
3. Check the resistance between M and S:
   • 🔴 Should be 10–50 Ω (compressor starting winding).
   • 🟢 If 0 Ω —short circuit, if OL —break.

Call L i S:

• 🔴 In normal condition - open (OL).
• 🟢 If closed - the relay is faulty.

Critical nuance: In the relay with posistor (thermistor) the resistance between M and S depends on the temperature. If the posistor is cold, the resistance is low (10–30 Ω), if it is heated, it is high (up to 1 kΩ) This is normal!

Disconnected the refrigerator from the network|Removed the relay from the compressor|Checked the multimeter for functionality|Write down the location of the wires-->

4. Typical relay malfunctions and their symptoms

How to understand that the problem is in the relay, and not in compressor or thermostat? Focus on the “symptoms”:

Symptom	Probable cause	What to do
The compressor does not start, but hums	Sticking relay contacts or breakage of the starting winding	Ring the relay, check the compressor windings
The refrigerator turns on for 1-2 seconds and turns off	Failure of the posistor or interturn short circuit in compressor	Ring the relay, measure the compressor current
The relay clicks, but the compressor does not start	Open circuit or worn relay contacts	Replace the relay, check the power supply
The refrigerator works without stopping	Sticking relay contacts in the closed state	Replace the relay, check the thermostat

If the relay clicks, but the compressor does not start, the problem may be starting capacitor (if it is in your model). Test it with a multimeter - the resistance should gradually increase from 0 Ω to OL.

⚠️ Attention: If, when testing the relay, you find a short circuit between L and M, do not turn on the refrigerator — this can lead to a fire in the wiring or failure of the compressor.

Does not turn on at all|Works intermittently|Hums, but does not freeze|Other-->

5. relays in modern Indesit models

In refrigerators Indesit s inverter compressors (for example, series EWD or TIA) electronic relays are installed. They do not have mechanical contacts, but are controlled by a board. You cannot ring such a relay with a multimeter - you will need:

1. Checking the power supply at the relay input (220V between L and N).
2. Diagnostics of the signal with control board (you need an oscilloscope or a tester with a function for checking transistors).
3. Checking the resistance of the compressor windings (between U, V, W).

For inverter models, typical faults:

• 🔌 Lack of power —check the fuse on the board.
• 📱 Board error - flashing may be required.
• 🔄 IGBT transistor malfunction - module replacement required.

How distinguish a mechanical relay from an electronic one?

The mechanical relay is a plastic box with terminals that can be removed by hand. The electronic one is part of the control board hidden under a metal screen. In inverter models, the compressor is quiet (there is no characteristic “growling” when starting), and there is a sticker on the back wall with the inscription Inverter Compressor or Digital Inverter.

6. What to do if the relay is working, but the refrigerator does not work

If the test shows that the relay is OK, look for the problem in other components:

1. Compressor:
   • Check the windings (resistance between C–S: 10–30 Ω, C–M: 15–40 Ω, S–M: 30–60 Ω).
   • If the windings are broken or short-circuited, the compressor needs to be replaced.
2. Thermostat:
   • Remove the terminals from the thermostat and short-circuit them together. If the compressor starts, the thermostat is faulty.

Control board:

• In models with a display (Indesit ITF 118), check the errors on the screen. Code F01 - problem with the sensor, F04 - motor malfunction.

If the refrigerator turns on, but does not freeze, the reason may be:

• 🧊 Freon leak —the circuit tubes are covered with oil, the compressor runs without stopping.
• ❄️ Clogging capillary tube —the condenser is hot and the evaporator is warm.
• 🔥 Fan malfunctions (in models with No Frost) - check the rotation of the blades.

7. How to replace the relay yourself

If the relay is faulty, it can be replaced without calling a technician. Algorithm:

1. Buy a similar relay for Indesit fit:
   • 🔧 DANFOSS 103N0212 — for models up to 2015.
   • 🔧 EMBRACO ER35 —for compressors Embraco.
   • 🔧 Indesit 481233001684 —original relay (universal).

Remove the old relay by disconnecting terminals. Do not pull the wires! Use pliers.

Install a new relay, observing the polarity (the terminal L must match the phase).

Attach the relay to the compressor (latches or screws).

Connect the refrigerator and check the operation.

Advice: If you are not sure about the relay model, take a photo of the old one and show it to the seller at the spare parts store. For inverter refrigerators, buy a relay only indicating the compressor model. (for example, Indesit Inverter for EWD 8140).

⚠️ Attention: After replacing the relay, the refrigerator may not start immediately - wait 5-10 minutes (during this time the pressure in the system will equalize). If the compressor does not start, check the power supply and the thermostat circuit.

FAQ: Frequently asked questions about the Indesit refrigerator relay

Can the relay be repaired or just replaced?

A mechanical relay with contacts can theoretically be repaired (clean the contacts, replace the spring), but in practice this is unreliable - after 1-2 months the problem will not return. repaired, only replacement.

How to check a relay without a multimeter?

You can use a test lamp (220V):

1. Connect the lamp. between L and M.
2. Plug in the refrigerator.
3. If the lamp lights up and does not go out, the relay is stuck.
4. If it does not light up, check the power supply L.
Danger! Risk of electric shock. It is better to buy a multimeter for 300-500 rubles.

Why does a new relay burn out after a week?

Reasons:

• 🔥 Compressor overload (interturn short circuit or jamming).
• 📉 Under/overvoltage in the network (should be 220V ±10%).
• 🔌 Thermostat malfunction (the compressor runs without stopping).

Before replacing the relay, check the compressor and the voltage in the socket!

Where to buy a relay for Indesit?

Options:

• 🛒 Official service centers Indesit (warranty, but more expensive).
• 🛒 Spare parts stores (for example, “220 Volt”, “Techport”).
• 🛒 Online platforms: AliExpress (cheaper, but long), Yandex Market.
Advice: When purchasing, check whether the relay is suitable for your compressor model (written on the sticker on the back of the refrigerator).

Is it possible to start a refrigerator without a relay?

Technically yes, but highly not recommended. Without a relay, the compressor will not start (there is no starting pulse), and if the contacts are closed L and M directly, the motor will burn out in a few minutes. For a temporary solution, you can use a universal relay RP4, but it is better to immediately install the original one.