Koreo refrigerator error codes

Refrigerator Troubleshooting Guide

Dead / No Power

• Check Power Supply:
  • Use a multimeter to check the power supply voltage.
  • Ensure the voltage is according to Indian standards (230 VAC, 50Hz).
  • Confirm the same voltage is available near the input of the PCB board or at the Relay and Overload Protector (OLP) for single-door models without a PCB.
• For PCB Model Refrigerators:
  • If input voltage is available at the PCB input, repair or replace the PCB if necessary.
• For Direct Cool Refrigerators:
  • If voltage is not available at the relay and OLP terminals, check the thermostat.
  • Thermostat Check:
    • Set the thermostat knob to medium cooling.
    • Use a multimeter in continuity mode:
      • 0 ≈ OK (continuity present)
      • 1 ≈ Not OK (no continuity)

Power ON but No Cooling

• Direct Cool Refrigerators:
  • Check if the compressor is running. A running compressor will produce a slight vibration.
  • If the compressor is not working, check the thermostat using the above method.
  • If the thermostat is OK, test the relay with a continuity test:
    • Insert both probes into the relay terminal slots.
    • If there is no reading on the multimeter, replace the relay.
    • If the reading is around 20–50 ohms and the buzzer beeps, the relay is good.
  • Check the OLP continuity:
    • If the reading is within 10 ohms and the buzzer beeps, the OLP is good.
  • Finally, check voltage at the relay and OLP. If the voltage is correct, replace the compressor.
• Double Door Refrigerators with PCB Circuit:
  • Check the power supply at the relay and OLP terminals (non-inverter models) within 5 minutes.
  • If voltage is present, inspect the relay, OLP, and compressor.

Compressor Tests

• The compressor may fail in the following ways:
  • Open Winding – Check with a multimeter.
  • Short Winding – Check with a multimeter.
  • Locked Rotor – Check with a clamp meter (will show high amperage).
  • Grounded – Check with a multimeter.
• If any of these conditions are present, the compressor will not function and may need replacement.