Mitsubishi Eclipse A/C only functions on fan speed setting one despite climate control unit replacement on Mitsubishi Eclipse

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Mitsubishi Eclipse owners report experiencing air conditioning issues where the system only functions on the lowest fan speed setting, even after replacing the climate control unit. This problem may stem from a defective climate control unit itself or faulty wiring and connections within the climate control system. Additionally, some owners find that a malfunctioning AC control switch can affect fan speed settings and the A/C compressor's operation. Adjusting temperature control settings, such as setting them to 'LO,' can also influence A/C performance. Furthermore, some owners notice that the compressor cycling on and off is a normal function related to refrigerant levels. To effectively resolve these issues, it is advisable to consult a Mitsubishi mechanic or an automotive technician with expertise in air conditioning systems for proper diagnosis and repair.

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