Kia Optima DL3: Heater / Evaporator Core

Repair procedures

Replacement
1.

Disconnect the negative (-) battery terminal.

2.

Remove the heater and blower assembly.

(Refer to Heater - "Heater Unit")

3.

Loosen the mounting screws, lock pin and remove the evaporator core cover (A).

4.

Remove the evaporator cover (A) from heater unit.

  

Be careful that the inlet and outlet pipe are not bent during heater core and evaporator core removal/installation.

5.

Separate the evaporator temperature sensor (A) from the evaporator core.

6.

To install, reverse the removal procedure.

    Repair procedures Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the heater and blower assembly.

    Components and components location Components Location 1. Temperature control actuator [LH] 2. Temperature control actuator [RH] Description and operation Description The temperature control actuator is located at the heater unit.

    Other information:

    Kia Optima DL3 2019-2026 Service and Repair Manual: Rear Glass Defogger

    C

    Kia Optima DL3 2019-2026 Service and Repair Manual: Evaporator Temperature Sensor

    Description and operation Description The evaporator temperature sensor will detect the evaporator core temperature and interrupt compressor relay power in order to prevent evaporator from freezing by excessive cooling. The evaporator temperature sensor has the Negative Temperature Coefficient (NTC).

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