Kelvinator split AC shows E2 and the indoor coil ices up or unit stops cooling.

Safety: Turn off power at the breaker or wall switch before opening the indoor unit.

Steps:

• Remove front cover: Open the front panel, remove filters, and access the evaporator coil area.
• Locate coil sensor: Look for a small thermistor clipped directly onto the evaporator coil tubing, with wires leading to the indoor PCB.
• Check mounting: Ensure the sensor is firmly clipped to the coil. A loose sensor can misread temperature and trigger E2.
• Inspect wiring: Follow the sensor wires to the PCB. Check for cuts, pinches, or signs of moisture damage. Reseat the connector on the PCB.
• Test resistance: With power OFF, measure resistance across the thermistor. Compare to the room sensor value; it should be in a similar kΩ range at room temperature. Infinite or near-zero resistance indicates a bad sensor.
• Replace sensor: If faulty, install a Kelvinator-compatible evaporator thermistor. Clip it securely to the same coil position and route wires away from sharp metal edges.
• Check PCB if needed: If a new sensor does not clear E2, the indoor PCB may be defective and require replacement.

Note: Ice buildup on the coil can also be caused by low refrigerant or airflow issues, but E2 specifically points to the sensor circuit.