Description
Product Overview
This used Heater Fan Regulator is designed for the Citroën C4 Picasso first generation and carries PSA part numbers A43000700 and 6441X3. It controls the blower motor speed to ensure stable heating and ventilation performance. The unit is suitable for professional mechanics and competent DIY enthusiasts looking for a reliable replacement component.
Key Features
- Direct fit for Citroën C4 Picasso (1st Gen)
- PSA Part Numbers: A43000700, 6441X3
- Electronic control for smooth fan speed regulation
- Cost-effective replacement for restoring HVAC functionality
Technical Information
- Manufacturer: PSA Citroën Peugeot
- Model: Citroën C4 Picasso (1st Generation)
- Product Codes: A43000700, 6441X3
- Other Numbers: Electronic Heater Fan Regulator
Compatibility And Fitment
This regulator is intended for the first generation Citroën C4 Picasso. Always verify the part numbers A43000700 and 6441X3 against your vehicle VIN or the existing part before purchase to ensure correct fitment.
Symptoms Of A Faulty Regulator
- Blower works only on certain speeds or jumps between speeds
- No blower function at all despite a working blower motor
- Intermittent operation or loss of fan control after moisture exposure
Common Causes And Service Life
Fan regulators fail most commonly due to heat stress, moisture ingress, corrosion of electrical contacts, or wear of internal electronic components. Lifespan depends on climate and usage; harsh environments and frequent heavy use reduce service life.
Replacement And Installation Notes
Replacement is generally straightforward for a trained technician or an experienced DIYer. Typical steps:
- Disconnect the negative battery terminal to prevent electrical shorting.
- Access the blower motor housing (commonly located under the glovebox or behind a lower dash panel on the passenger side).
- Unplug the electrical connector and remove any mounting screws securing the regulator to the blower assembly.
- Replace with the new regulator, reconnect the harness, and secure all fasteners.
- Reconnect the battery and test all fan speed settings to confirm correct operation.
Check the wiring harness and blower motor current draw during installation; excessive motor current or a damaged connector can shorten the life of a new regulator.
Condition And Inspection
This is a used component sourced from a known supply chain and has been inspected for serviceability. It offers an economical option for repair without sacrificing compatibility when matched by part number.
