This guide explains all Samsung Refrigerator error codes (CH series) with simple troubleshooting steps to help you identify and fix common issues safely before calling a technician.
5E / SE
Defrost Sensor Error
- Unplug refrigerator for 5–10 minutes.
- Check defrost sensor connection.
- Inspect evaporator for ice buildup.
- Replace sensor if faulty.
24E
Defrost Heater Fault
- Inspect defrost heater wiring.
- Check continuity of heater element.
- Remove ice buildup from evaporator.
- Replace heater if defective.
25E
Defrost Sensor Failure
- Check sensor resistance.
- Inspect wiring harness.
- Fully defrost unit.
- Replace sensor if needed.
36E
Defrost System Abnormality
- Check evaporator heater circuit.
- Inspect control board output.
- Defrost refrigerator manually.
- Replace heater or PCB if needed.
8E
Ice Maker Sensor Error
- Reset ice maker module.
- Check sensor connection.
- Remove ice blockage.
- Replace sensor if needed.
14E
Ice Maker Issue
- Turn ice maker OFF then ON.
- Check water supply line.
- Inspect ice tray movement.
- Reset refrigerator system.
26E
Ice Maker Motor Jam
- Remove ice blockage.
- Reset ice maker system.
- Check motor movement.
- Replace motor if stuck.
40C
Ice Maker Fan Error
- Check fan for obstruction.
- Defrost ice compartment.
- Inspect wiring connection.
- Replace fan motor if needed.
33E
Ice Pipe Heater Error
- Check heater connection.
- Inspect frozen water line.
- Fully defrost system.
- Replace heater if faulty.
15E
Ice Maker Water Supply Error
- Check water inlet valve.
- Ensure water line is not frozen.
- Inspect filter blockage.
- Replace inlet valve if needed.
21E
Freezer Fan Motor Error
- Check fan for ice blockage.
- Defrost freezer compartment.
- Inspect wiring connection.
- Replace fan motor if needed.
22E
Fan Motor Error (Freezer)
- Check fan blade movement.
- Remove ice obstruction.
- Inspect wiring harness.
- Replace motor if faulty.
39C
Ice Room Sensor Error
- Check sensor wiring.
- Defrost ice room.
- Inspect moisture damage.
- Replace sensor if needed.
37C
Evaporator Fan Error
- Check evaporator fan motor.
- Remove ice buildup.
- Inspect wiring connection.
- Replace motor if faulty.
41E
Main PCB Communication Error
- Power cycle refrigerator.
- Check wiring between boards.
- Inspect moisture damage.
- Replace PCB if needed.
PC ER
Board Communication Failure
- Unplug unit for 10 minutes.
- Check ribbon cable connections.
- Inspect PCB damage.
- Replace board if required.
CO
Module Communication Error
- Restart refrigerator.
- Check all wiring connections.
- Inspect connectors.
- Replace PCB if needed.
88 88
Display Boot Failure
- Reset power supply.
- Check display connection.
- Inspect PCB board.
- Replace display module if needed.
85C
Low Voltage Detected
- Check household voltage supply.
- Use dedicated outlet.
- Avoid extension cords.
- Call electrician if unstable.
85C1
Voltage Fluctuation Detected
- Use voltage stabilizer.
- Check wiring stability.
- Inspect breaker box.
- Restart after stabilization.
85E
Power Supply Abnormality
- Check power cord condition.
- Inspect outlet voltage.
- Reset refrigerator.
- Call technician if persistent.
84C
Compressor Locked / Overload
- Unplug for 10–15 minutes.
- Clean condenser coil.
- Ensure ventilation space.
- Call technician if compressor stuck.
84E
Compressor Start Failure
- Check relay and capacitor.
- Inspect wiring connections.
- Ensure stable voltage.
- Service required if not starting.
83E
Inverter Board Failure
- Check inverter wiring.
- Inspect burnt components.
- Restart system.
- Replace inverter board if needed.
99E
Compressor Overheat Protection
- Turn OFF refrigerator.
- Clean condenser and rear vents.
- Ensure proper airflow.
- Restart after cooling period.
88C
Main PCB Checksum Error
- Power reset system.
- Check firmware corruption.
- Inspect control board.
- Replace PCB if required.
OF OF
Demo Mode Active
- Press fridge/freezer buttons.
- Hold 5–10 seconds.
- Exit demo mode.
- Restart unit.
PC ER2
Extended Communication Failure
- Check all PCB connections.
- Inspect wiring harness.
- Power cycle unit.
- Replace main board if needed.
Frequently Asked Questions
Why does my Samsung Refrigerator show ERR or system error messages?
ERR usually indicates a system fault such as sensor failure, communication error between boards, power fluctuation, or defrost system issues. Turn off the refrigerator, unplug or switch off the breaker for a few minutes, then restart. Check wiring connections and ensure stable power supply.
Why does my Samsung Refrigerator stop cooling properly?
This is often caused by blocked airflow, dirty condenser coils, fan failure, or defrost system malfunction. Clean vents and coils, ensure proper door sealing, and allow the system to stabilize after restart.
Why does my Samsung Refrigerator not turn on?
Check the power outlet, breaker, and power cord connection. Ensure the unit is properly plugged in and voltage is stable. If still unresponsive, perform a power reset.
Why does my Samsung Refrigerator not cool or freeze properly?
Weak cooling may be caused by dirty condenser coils, faulty evaporator fan, low refrigerant, or blocked airflow. Clean the unit and ensure proper ventilation inside compartments.
Why does my Samsung Refrigerator make unusual noises?
Noise may come from evaporator fan, compressor, or ice buildup. Check for ice obstruction and ensure the refrigerator is level and stable.
Why does my Samsung Refrigerator leak water?
Water leakage is usually caused by clogged drain holes, frozen drain lines, or improper door sealing. Clean the drain system and check door gaskets.
Why does my Samsung Refrigerator freeze food in the fresh food compartment?
This may be caused by incorrect temperature settings, faulty sensor, or airflow imbalance. Adjust temperature and check air vents inside the fridge.
Why does my Samsung Refrigerator ice maker not work?
Check water supply line, ice maker switch, and filter condition. Reset the ice maker module and ensure no ice blockage is present.
Why does my Samsung Refrigerator ice build up inside?
Ice buildup is often caused by defrost system failure, door seal issues, or airflow blockage. Defrost the unit and inspect gaskets and sensors.
Why does my Samsung Refrigerator run continuously?
Continuous operation may be caused by dirty condenser coils, warm room temperature, or faulty temperature sensors. Clean coils and check thermostat settings.
How do I reset my Samsung Refrigerator system messages?
Turn off the refrigerator or unplug it for 5–10 minutes, then restart. This clears temporary system errors and resets control board functions.
Why does my Samsung Refrigerator display blinking lights or error codes?
Blinking lights usually indicate system warnings such as temperature issues, door errors, or sensor faults. Restart the unit and check door sealing and cooling performance.
When should I service my Samsung Refrigerator?
Service is recommended if cooling fails, repeated error codes appear, compressor runs abnormally, or water leakage persists after troubleshooting.
Important: Samsung Refrigerator system messages are designed to protect internal components such as the compressor, sensors, and control boards. If issues continue after troubleshooting, stop using the appliance and contact an authorized Samsung service center for repair.