Why the Renault Megan 2 stove does not work

Every part of a car has a certain lifespan. If, after driving, you notice that the Renault Megane 2 stove is not working, conduct an independent diagnosis based on the symptoms identified.

The stove motor must be replaced in case of failure.

Signs of a malfunctioning heater motor

If it is determined that the stove is blowing badly and the motor is noisy, this does not necessarily indicate a malfunction. To accurately determine the malfunction, it is necessary to check the symptoms that cause doubts about the operation of the Renault Megan 2 engine.

It will be necessary to repair the stove if there are signs in the engine such as: hissing, howling, creaking, creaking.

The following are common signs and causes of Renault malfunctions.

• Whispering sound: clogged impeller. Try cleaning and changing the cabin filter.
• Loud noise: the brushes are worn out. On the engine, replace the commutator brushes.

• Impeller play - Lubricate or replace motor bushings and bearings.
• Lack of air movement through the deflectors - Cabin filter Megan 2 is clogged. Clean or replace the cabin filter.
• An open in the electrical cable circuit: find an open, fix it.
• The heater motor is faulty - check the windings, armature, brushes with a multimeter, then repair or replace parts.
• Fuse blown - short circuit in the mains. Touch control, engine power circuit, find a short circuit, remove and replace the Megan 2 fuse.
• Short circuit in the motor. Call and inspect the motor, find a short circuit, repair or replace the motor.
• After changing the motor, the fuse blows: incorrect connection or short circuit. Find a source of high current, fix the problem.
• Hissing or squealing Megan 2 engine - not enough lubrication. Disassemble, lubricate the rotation nodes.

• Slow rotation of the motor and insufficient blowing of the stove: the filter is clogged. Change the cabin filter, clean the housing.
• Worn brushes - replace brushes.

• Damage to the motor control relay - replace the motor relay of the Megan 2 stove.
• Insufficient contact in the fan circuit: touch the control and power circuits, measure the resistance, restore contact.
• Current limiting resistor damaged - check, replace resistor.
• Breakage of the armature winding: check the winding and rotor of the motor, replace the defective armature or electric motor.
• Fan acceleration - Megan 2 resistor damage. Repair the damage or replace the control resistor.
• The oven control knob does not work; measure the pen with a multimeter, replace it.
• Vibration of the oven motor - abrasion of bushings and / or bearings. Lubricate or replace parts.
• The Megan 2 stove does not work - a short circuit or an open in the power circuit. Troubleshooting, removal.
• Engine burnt out - repair or replace.
• The fan switch does not work; repair or replace the fan.

Repair of Megan 2 may not be required, it is enough just to carry out preventive work.

Replacing the stove fan

If it so happened that the Renault Megan 2 stove stopped working, troubleshooting did not lead to the desired result, you will have to replace it. Let's learn how to proceed to remove the old fan:

• We open the panel, we begin to disassemble the pedal.

• Disconnect the brake sensors, then the accelerator pedal.

• To release the brake pedal lock, you must remove the retaining ring, pull the lock and press the rod. Then squeeze the end and turn to your side.

• Unscrew the four nuts, one of which is hidden under the seal.

• After that, the pedal assembly is removed.

• The next step is to unscrew the Megan 2 fan speed control module, remove it, and put the cables aside.

• You need to disconnect the connector: press the latch, bend the connector to the right and remove it upwards.

• Press the latch and turn the motor counterclockwise.

• The fan must be pulled out and turned forward together with the impeller; this is the only hard time to replace.

• You need to pull it towards you so that the brake rod is inside the driver. Therefore, the Megane II fan is removed.

After the perfect manipulations, the new part is installed in the reverse order with smooth movements, trying not to damage the impeller.

Motor part numbers

Let's discuss which elements of the stove fan can be used for Renault:

RENAULT 7701056965 - original for Renault Megane 2.

Original RENAULT 7701056965

For those who want to save money, analogues of fans are presented on the market, for example:

• STELLOX 29-99025-SX - the engine supports 12V;
• PATRON PFN079 - this copy weighs 1,22 kg;
• ERA 664025 - power 220 W, voltage 12 V;
• NRF 34126 - the fan has 47 blades, rotates clockwise;
• NISSENS 87043 - bipolar, power 173 W

The listed fans that can replace Renault Megane are named in ascending order of cost from 2 thousand rubles to 5 thousand

Repair

It is worth trying to repair the stove fan. Changing the wiper blades may be enough to fill the Megan 2's cabin with fresh air again.

On the engine, you need to remove the wiring block.

With a thin screwdriver, pry off the three latches and release the motor from the stove.

The brushes are non-removable, since the ends of the leads are soldered to the stator contacts. It is likely that the brushes have worn out, acquired an uneven cut.

It is necessary to clean the contacts, the gaps between the contacts from dust and dirt. Copper and graphite brushes can be found at hardware stores.

Having cut and given the necessary shape, weld the Renault Megan 2 fan. Then install the fan in its place.

Removing and flushing the heater core

Before replacing the radiator, it is worth trying to flush it. The disassembly process may depend on the type of Megan 2 radiator. In the case of model 7701208323, complete disassembly of the panel is required, with model N80506052FI everything is much simpler.

Stove radiator 7701208323

Before removing the radiator, it is necessary to drain the antifreeze. At this time, remove the casing, disconnect the piece of iron, screw in 4 bolts and 1 self-tapping screw. Thus, access to the stove radiator and damper servo was opened. Next, you need to remove 2 latches, pull out the pipes and get the radiator. When assembling, use the reverse order.

You will see how the pipes fit into the radiator.

Skin removed

Flushing can be done with a strong water pressure towards the supply. For better cleaning of the Renault Megan 2 radiator, you can pour a special agent into it, for example Sanoks, and then rinse it again with Karcher water. It remains to install the removed elements in their places.

Replacing the resistor

Problems in the operation of the Renault Megan 2 fan are not always associated with the fan itself. The malfunction may be related to the resistance of the Megan 2 stove.

The stores offer analogues of the original Valeo, for example, NTY ERDCT001.

Resistor NTY ERDCT001

They look the same, the new resistor worked great. It is necessary to try to clean the old resistor with alcohol, solder it with solder. He can still serve Megan 2.

old and new resistors