Heater servo BEHR H1959 U b 14 Citroën Peugeot EAD512 6447RZ is an electric servomotor controlling the heating and ventilation flaps in the dashboard. It ensures the correct routing and regulation of hot and cold air into the interior of the car and is thus key to the full functionality of the heating and air conditioning.

This part is suitable for selected Citroën and Peugeot models and is mainly used when replacing a malfunctioning or noisy servo motor that causes problems with temperature regulation, air flow direction or windshield defrosting.

Technical information
Manufacturer: BEHR
Model: heating servo motor (heating/air conditioning flap control)
Intended for cars:
– Citroën C4 (selected versions)
– Peugeot 307 II (selected versions)

Product codes:
– BEHR: H1959 U b 14
– PSA: 6447RZ

Other numbers:
– PSA: 6447RF
– Designation: EAD512

Part type: heating servo motor / heating and ventilation flap servo motor
Location: dashboard – heating and air conditioning system

Advantages of this part
– Precise control of heating and ventilation flaps
– Restoring the correct function of air flow and regulation in the cabin
– A suitable solution for problems with stuttering, clicking or complete failure of flaps

Installation recommendations
– Before dismantling, disconnect the battery to avoid damaging the electrical installation.
– Carefully check the access to the servo motor – it is usually necessary to partially disassemble the plastic of the dashboard or the area near the heater.
– When disassembling the old part, mark the position of the flaps and connectors so that assembly takes place without incorrect rotation.
– Check the condition of the electrical connector and harness, in case of oxidation, clean and treat the contacts.
– Mount the new servomotor without violence, seat the gears correctly in the valve, tighten the screws carefully to avoid damaging the plastic mounts.
– After installation, carry out a test run – gradually switch the temperature, flow direction and air conditioning modes, whether the dampers react smoothly and without unusual sounds.
– In some cars, it may be necessary to perform a basic setting/calibration of the flaps via diagnostics – a car mechanic should know this procedure.

This servo motor is particularly suitable for car mechanics and skilled home repairers who need a reliable used part with clearly traceable codes and markings for correct assignment to a given Citroën or Peugeot model.

The BEHR Heater Servo Motor with Gasket is designed specifically for maintaining optimal climate control in Citroën and Peugeot vehicles. It fits models such as the Citroën C4 and Peugeot 307 II. This servo motor is equipped with product code EAD512 and includes a plastic intermediate piece ensuring a precise fit.

Function and Importance

This heater servo motor controls the blend door inside the HVAC (Heating, Ventilation, and Air Conditioning) system. It regulates the flow of hot air from the heater core into the vehicle cabin, enabling accurate temperature adjustments. Over time, these servo motors may fail due to mechanical wear or electrical issues, leading to inconsistent heating or failure to adjust the cabin temperature properly.

Replacement and Maintenance

Replacing the servo motor is typically straightforward and can be done by experienced DIY mechanics or professional technicians. The unit is mounted inside the dashboard, connected to the HVAC control system. Proper diagnosis should confirm servo motor failure before replacement. Regular inspection is advised if heating malfunctions occur, especially in vehicles frequently used in colder climates.

Technical Information

• Manufacturer: BEHR
• Models: Citroën C4, Peugeot 307 II
• Product Codes: EAD512, 6447RF
• Additional Codes: H1959 Ub 21, B5783 Ua 42

Why Choose This Product?

This genuine BEHR servo motor offers reliable performance and precise operation essential for maintaining a comfortable cabin environment. With its durable construction and plastic intermediate piece, it provides easy installation and long-lasting function, ensuring your Citroën or Peugeot’s heating system operates efficiently.

This BEHR Heater Servo Motor with Gasket is specifically designed for use in heating systems of Citroën and Peugeot vehicles, including Citroën C4 and Peugeot 307 II models. It plays a crucial role in regulating the airflow by controlling the heater flap position, ensuring optimal cabin temperature and comfort.

Function and Common Issues

The servo motor operates by receiving signals from the climate control unit to adjust the blend door or heater valve within the HVAC system. Over time, wear and tear or electrical faults can cause the motor to malfunction, resulting in poor or no temperature control, unusual noises, or unresponsive climate settings. Regular maintenance and timely replacement enhance vehicle comfort and prevent further HVAC system damage.

Installation Information

Replacing the heater servo motor involves accessing the HVAC housing inside the dashboard, unfastening the faulty servo motor, and installing the new unit along with its gasket to ensure airtight sealing. It is recommended to disconnect the battery before starting the replacement to avoid electrical issues. This process is suitable for experienced mechanics or skilled DIYers familiar with vehicle HVAC systems.

Technical Information

• Manufacturer: BEHR
• Model Compatibility: Citroën C4, Peugeot 307 II
• Product Codes: EAD512, H1959 Ub 43, 6447RF
• Additional Codes: H1959

Why Choose This Part?

Manufactured by BEHR, a leading supplier of automotive cooling and heating components, this servo motor guarantees precision fit and reliable performance. Its durable plastic intermediate piece ensures smooth operation and reduces mechanical wear. Perfect for professional repair shops and vehicle owners performing self-maintenance.

Description

This replacement heater servo motor (HVAC actuator) is designed for Citroën C4 and Peugeot 307 II climate systems. Supplied with common manufacturer and aftermarket references (Behr / EAD512 / 6447RF / 6447RZ / H1959), the unit drives the internal flaps that control airflow direction and temperature mixing inside the dashboard. The part is often searched by its product codes, so listing OE and reference numbers helps mechanics and DIY enthusiasts find the correct item quickly.

Application And Function

The servo motor operates the blend/mode flaps in the heater and ventilation box, enabling correct distribution of warm or cold air to the cabin (footwell, face vents, windshield) and mixing of hot/cold air to achieve set temperatures. Proper operation is essential for climate comfort and windshield demisting. Typical fitment vehicles: Citroën C4 and Peugeot 307 II (verify part number compatibility with your vehicle’s listed codes).

Symptoms Of Failure

• Clicking or knocking noises from the dashboard when changing HVAC settings.
• No airflow from selected vents or inability to change vent mode.
• Incorrect cabin temperature due to failed blend control.
• Intermittent operation or complete loss of actuator movement.

Recommended Installation

Installation is straightforward for a trained mechanic but typically requires partial dashboard access. Typical procedure:

• Disconnect the battery before starting to avoid short circuits and protect vehicle electronics.
• Access the actuator by removing glovebox or lower dash panels as required for your model.
• Unplug the electrical connector and remove the mounting screws holding the old servo motor.
• Fit the new unit in the same orientation, secure with screws, and reconnect the connector.
• Reinstall trim panels and reconnect the battery. Cycle the HVAC controls through full range to allow the mechanism to settle; if required, perform an actuator calibration or adaptation using diagnostic equipment.

For workshop technicians: if the HVAC system does not return to correct operation after mechanical replacement, perform an adaptation procedure with a compatible diagnostic tool. Follow manufacturer removal/installation sequences to avoid damaging plastic gears or cables.

Why The Part Most Often Fails

• Plastic Gear Wear Or Breakage: Internal plastic gears can wear or snap over time, causing loss of movement or noisy operation.
• Motor Burnout Or Electrical Faults: Motor windings or electronics may fail due to age or voltage spikes.
• Contamination And Moisture: Dust, debris, or moisture ingress can seize gearing or corrode connectors.
• Mechanical Strain: Stiff or obstructed flap mechanisms increase load on the servo and accelerate wear.

Technical Information

• Manufacturer: Behr
• Model: Citroën C4; Peugeot 307 II
• Product Codes: 6447RF; 6447RZ; H1959; EAD512
• Additional Numbers: H1959 U b 21; EAD512 6447RF

Notes For Buyers

This servo motor is commonly searched by its reference numbers—listing these codes in your search will increase the chance of finding the correct unit. Suitable for technicians and skilled DIYers comfortable with dashboard disassembly. Always follow safety procedures and vehicle-specific instructions during replacement.

The BEHR Heater Servo Motor H1959 U b 13 is a direct-fit HVAC actuator designed for Citroën C4 and Peugeot 307 II models. Identified by product codes 6447RF, EAD512 and 6447RZ, this used servo motor offers an economical replacement for faulty blend-door actuators in the heating and ventilation system.

Function And Common Failures

The servo motor controls the position of the blend door to direct warm air into the passenger compartment. Over time, internal plastic gears, the position sensor or electrical connector can wear or fail, causing clicking or grinding noises, incorrect temperature distribution, slow or unresponsive vent movements, or complete loss of climate control function. Moisture ingress, repeated heat cycles and mechanical stress are common contributors to failure.

Fitment And Replacement

This unit fits Citroën C4 and Peugeot 307 II applications that use the same product codes. Access typically requires removal of the glovebox or lower dashboard trim to reach the HVAC housing. Replacement steps: disconnect the battery for safety, unplug the electrical connector, remove the retaining screws, swap the actuator, reconnect and test before reassembly. Basic hand tools are usually sufficient; follow the vehicle service manual for torque and safety instructions.

Technical Information

• Manufacturer: BEHR
• Model: Citroën C4, Peugeot 307 II
• Product Codes: 6447RF, EAD512, H1959 U b 13
• Additional Numbers: 6447RZ

This used BEHR servo motor is aimed at professional mechanics and DIY enthusiasts seeking a cost-effective replacement. We guarantee the functionality of all our used parts and provide detailed information on each item to help you restore proper HVAC performance quickly.

Order today to restore reliable heater control for your Citroën C4 or Peugeot 307 II.

This BEHR Heater Servo (Heater Servo Motor) H1959 U B 44 (EAD512 / 6447RZ / 6447RF) is designed for PSA vehicles and is commonly used to control heater/air distribution flaps in the HVAC unit of Citroen C4 and Peugeot 307 II. It is aimed at professional mechanics and competent DIY installers searching by part number for a direct-fit servo actuator.

Function And Application

The servo motor operates the heater box flaps (blend/direction/recirculation flaps) to regulate airflow and cabin temperature. On affected PSA models it replaces the OEM actuator responsible for moving internal HVAC flaps according to the climate control commands.

Common Failure Modes And Service Notes

Typical causes of failure include worn or stripped internal plastic gears, seized motor bearings, electrical connector corrosion, or broken gear teeth from repetitive movement. Symptoms are unusual HVAC noises, stuck or incorrect airflow direction, inability to change temperature or mode, or error codes related to flap position. Lifespan varies with vehicle use and environment; warm/cold cycle frequency and dust ingress accelerate wear.

Replacement And Installation Guidance

Replacement usually requires access to the HVAC housing behind the dashboard or via the glovebox area depending on model. General steps: disconnect battery, remove dash trim or glovebox to reach the heater box, unplug electrical connector, remove mounting screws securing the actuator, swap the unit and refit screws and connector, then check flap movement and recalibrate if required by the vehicle’s climate control procedure. Suitable for experienced DIY technicians and workshop mechanics; consult vehicle-specific service manual for detailed removal and calibration steps.

Compatibility And Fitment

Fits PSA vehicles where the listed part numbers apply — commonly referenced for Citroen C4 and Peugeot 307 II. Always verify part numbers with the vehicle’s VIN or compare with the original actuator label to ensure exact compatibility before installation.

Technical Information

• Manufacturer: BEHR
• Model: Citroen C4; Peugeot 307 II
• Product Codes: H1959; EAD512; 6447RZ; 6447RF
• Additional Numbers: U B 44

Why Choose This Part

This servo motor listing includes common OEM and aftermarket reference numbers to help you find an exact match quickly. The description and codes are tailored for mechanics and DIY customers who search by part number (e.g. H1959, EAD512, 6447RZ). Replace a failing actuator to restore proper HVAC function and eliminate flap noise or incorrect air distribution.

The BEHR heater servo (commonly referenced as H1959 U b 41, EAD512, 6447RZ / 6447RF) is a direct-fit HVAC actuator for PSA vehicles. It controls the temperature blend and air distribution flaps to maintain the desired cabin climate. This unit is intended for both professional automotive technicians and experienced DIY mechanics performing HVAC repairs on Citroën and Peugeot models.

Features and Function

• Direct-replacement heater servo motor for PSA vehicles; restores accurate flap movement for temperature and airflow control.
• Electrical actuator that moves blend and distribution flaps according to HVAC control inputs.
• Compact design for OEM-style fitment and straightforward installation in dashboard HVAC housings.

Fitment And Application

Compatible with Citroën C4 and Peugeot 307 II models that use PSA part references EAD512, 6447RZ or 6447RF. Always cross-check the part codes on your vehicle before ordering to confirm compatibility.

Replacement Procedure (General Guidance)

Typical replacement steps for a heater servo motor:

• Disconnect the vehicle battery to prevent electrical shorting.
• Access the HVAC unit—this commonly requires removing the glovebox or lower dashboard trim to reach the actuator mounting.
• Unplug the electrical connector and remove the retaining screws or clips securing the servo.
• Remove the faulty servo and fit the replacement in the correct orientation; reattach screws and connector.
• Reconnect the battery and cycle the ignition to allow the HVAC system to calibrate the new actuator. Confirm proper flap movement and temperature control operation.

Common Failure Modes

Heater servos typically fail due to worn internal gears, seized or degraded potentiometers, water ingress or condensation inside the HVAC box, and connector corrosion or wiring faults. Symptoms include incorrect temperature, stuck or noisy flap movement, clicking noises from the dashboard, or no response from HVAC controls.

Service Life And Maintenance

Service life varies with use and environment; many servos last for years but exposure to moisture or contaminated air can accelerate wear. Regular inspection of HVAC operation and prompt repair of leaks that allow water into the HVAC housing will extend component life.

Technical Information

• Manufacturer: BEHR
• Model: Citroën C4; Peugeot 307 II
• Product Codes: EAD512; H1959 U b 41; 6447RZ; 6447RF
• Other Numbers: PSA references 6447RZ / 6447RF (as listed in parts catalogs)

Used BEHR heater servo motor suitable for Citroën and Peugeot vehicles, specifically compatible with Citroën C4 and Peugeot 307 II. This actuator (EAD512 / 6447RF / H1959 U B 42) controls the HVAC blend or air distribution flaps to regulate cabin temperature and airflow. Ideal for professional workshops and DIY mechanics seeking a cost-effective replacement that maintains precise climate control.

Function

The heater servo motor moves the blend door or distribution flaps inside the heater/ventilation unit, allowing the HVAC system to mix warm and cold air to reach the selected cabin temperature. Accurate positioning prevents temperature fluctuations and directs airflow to the correct vents.

Symptoms Of Failure

• Inconsistent cabin temperature or inability to reach the set temperature
• Stuck vents or lack of airflow to specific outlets
• Clicking, grinding or unusual noises coming from behind the dashboard
• HVAC-related fault codes reported by diagnostic tools

Causes And Typical Lifespan

Common failure causes include worn internal gears, motor wear, electrical connector faults, and water or debris ingress. Lifespan varies by usage and environment; high-mileage vehicles or those exposed to moisture may experience earlier failures.

Replacement & Installation

Replacement is a routine repair for experienced DIYers and professional technicians. Typical procedure: disconnect the vehicle battery, access the HVAC unit (often via glovebox removal or lower dash panels), unplug the electrical connector, remove mounting screws, replace the actuator and reassemble. Required time generally ranges from 30 to 90 minutes depending on access and model. Always confirm fitment by cross-referencing the product codes before installation.

Why Choose This Part

This used BEHR servo motor provides a cost-effective solution to restore proper HVAC functionality while keeping repair costs down. The part is described as inspected and ready for installation to help speed up repairs and reduce downtime. Verify compatibility using the listed product codes to ensure correct fitment.

Technical Information

Manufacturer: BEHR
Model: Compatible With Citroën C4 And Peugeot 307 II
Product Codes: 6447RF, EAD512, H1959 U B 42
Other Numbers: 6447RZ