Air conditioner series resistor. Porsche 928 1989-93

Air conditioner series resistor. 
Air-conditioner series resistor is designed for the HVAC blower control in the Porsche 928 series. Installed within the climate-control system, this resistor pack provides multiple steps of electrical resistance, enabling the blower motor to run at different fan speeds (low, medium, high). Built to match Porsche’s original specification.

Fits:
Porsche 928 1989 - 1993

Diagram ref no 37

• Position on Vehicle: Within the HVAC unit - typically mounted near the blower motor or inside the footwell dash area, functioning as the speed-control resistor pack for the A/C blower.

•  Part Numbers / References: OE references 928-616-101-00 or superseded 928-618-101-01.

•  Applications: Suitable when the blower motor is stuck at one speed (typically high only), blower fails on low/medium speeds, or after servicing blower motor or climate control system.

While compact, the A/C blower resistor plays a vital role: degraded or failed resistors commonly cause the blower to be stuck on high only or no low/medium speeds - impacting comfort, defrost performance and cabin ventilation. Replacing with the correct resistor restores full speed control, safer driving (better defrost), improved comfort and avoids fan motor overdrive.

When to replace:
•  Blower only runs on high speed or fails at lower speeds
•  A/C or heater airflow is weak despite servicing the blower motor
•  Blower control selector has no effect or is inconsistent
•  You’re servicing or replacing the blower motor or HVAC system in your Porsche 928

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

92861610100

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