Description
Overview
Used electronic heater fan regulator designed for Citroën C4 Picasso (1st Generation). This module controls the blower motor speed within the vehicle HVAC system and is a direct reference fit for PSA vehicles carrying part numbers A43000700 and 6441X3. Intended for professional mechanics and informed DIY vehicle owners who require a cost-effective repair solution.
Features & Function
The regulator modulates the electrical supply to the heater/blower motor to deliver variable fan speeds and smooth cabin airflow. Proper function is essential for climate control performance, helping the heating and air conditioning systems provide consistent cabin comfort across all selected fan settings.
Fitment & Application
Direct fit for Citroën C4 Picasso first generation models. Frequently identified by the product codes A43000700 and 6441X3. Always confirm compatibility with your vehicle VIN or existing part number before ordering to ensure correct application.
Replacement & Installation
Typical replacement steps: disconnect the negative battery terminal; gain access to the blower housing (commonly behind the glovebox or via an under-dash access panel); unplug the electrical connector; remove mounting screws or clips securing the regulator; install the replacement regulator, reconnect the electrical connector and reassemble. During replacement, inspect the blower motor and connectors for corrosion or damage and secure all fasteners to prevent vibration issues.
Common Failure Modes
Failure is commonly caused by heat cycling, moisture ingress, corrosion of electrical contacts, or gradual wear of internal electronic components. Symptoms of a failing regulator include limited fan speed options, intermittent blower operation, the blower working only on a single speed, or complete loss of blower function.
Quality & Condition
This listing describes a used unit sourced from a reliable supplier and inspected prior to listing. It provides a practical, cost-effective alternative to a new assembly for restoring HVAC blower control. Suitable for workshop repairs and competent DIY installations.
Technical Information
- Manufacturer: PSA Citroën Peugeot
- Model: Citroën C4 Picasso (1st Generation)
- Product Codes: A43000700, 6441X3
- Additional Numbers: Electronic Heater Fan Regulator
