Samsung Microwave / Oven Error Codes

Complete Samsung Microwave / Oven Guide

This guide explains all Samsung Microwave / Oven error codes (CH series) with simple troubleshooting steps to help you identify and fix common issues safely before calling a technician.

SE
Keypad Error
  • Check keypad for stuck or jammed buttons.
  • Clean control panel surface carefully.
  • Disconnect power for 5 minutes.
  • Replace membrane keypad if issue persists.
E-11
Sensor Failure
  • Inspect temperature sensor wiring.
  • Check for loose or damaged connections.
  • Test sensor resistance with multimeter.
  • Replace sensor if readings are abnormal.
E-12
Temperature Sensor Short Circuit
  • Turn OFF power immediately.
  • Inspect sensor wiring for damage.
  • Replace shorted temperature sensor.
  • Check PCB input circuit for faults.
E-13
Humidity Sensor Failure
  • Inspect humidity sensor connection.
  • Clean internal cavity and sensor area.
  • Test sensor response.
  • Replace sensor if malfunction persists.
E-14
Door Sensor Error
  • Check door switch alignment.
  • Ensure door closes properly.
  • Clean latch and contact points.
  • Replace door switch if faulty.
E-21
Magnetron Issue
  • Check magnetron connection.
  • Inspect for burning smell or damage.
  • Verify stable power supply.
  • Replace magnetron if faulty.
E-22
Inverter Failure
  • Turn OFF power immediately.
  • Inspect inverter board.
  • Check for burnt components.
  • Replace inverter board if needed.
E-23
Magnetron Overheating
  • Check ventilation fan operation.
  • Clean cooling system and vents.
  • Avoid long continuous cooking cycles.
  • Replace cooling fan if required.
E-25
Heating Failure
  • Check high-voltage diode.
  • Inspect transformer or inverter system.
  • Test power output function.
  • Replace heating components if needed.
E-41
Door Switch Error
  • Check door latch alignment.
  • Inspect door switches.
  • Clean door hooks and contacts.
  • Replace switch if faulty.
E-42
Relay Failure
  • Inspect control board relay.
  • Check for burnt relay contacts.
  • Test power switching function.
  • Replace control board if needed.
E-45
Door Latch Stuck
  • Inspect latch mechanism.
  • Remove debris from door area.
  • Check spring mechanism.
  • Replace latch assembly if needed.
E-46
Safety Interlock Failure
  • Check interlock switches.
  • Inspect door sealing system.
  • Ensure proper door closure.
  • Replace interlock system if faulty.
C-F0
Communication Fault
  • Restart microwave system.
  • Check control board wiring.
  • Inspect PCB connectors.
  • Replace board if issue persists.
C-F1
Control Board Failure
  • Disconnect power for 10 minutes.
  • Inspect PCB for damage.
  • Check voltage supply stability.
  • Replace control board if necessary.
C-F2
Memory / Program Error
  • Power cycle the unit.
  • Reset system settings.
  • Check firmware corruption.
  • Replace PCB if error continues.
E-24
Cooling Fan Error
  • Check fan blade obstruction.
  • Inspect motor wiring.
  • Clean dust buildup.
  • Replace fan motor if needed.
E-26
Ventilation Overheat Protection
  • Turn OFF and allow cooling.
  • Ensure proper airflow around unit.
  • Clean vents and internal cavity.
  • Reduce continuous usage time.
E-30
Power Supply Instability
  • Check wall outlet stability.
  • Avoid using extension cords.
  • Inspect power cable condition.
  • Test with another outlet.
E-31
Internal Fuse Blown
  • Disconnect power immediately.
  • Inspect internal fuse.
  • Check for short circuit causes.
  • Replace fuse or board if needed.

Frequently Asked Questions


Why does my Samsung Microwave / Oven show ERR or system error messages?
ERR usually indicates a system fault such as sensor failure, control board error, door switch issue, or power fluctuation. Turn off the unit, unplug it for a few minutes, then restart. Check door closure and power stability before use.
Why does my Samsung Microwave / Oven stop heating during operation?
This is often caused by overheating protection, magnetron safety shutdown, or airflow restriction. Allow the unit to cool, ensure vents are clear, and restart after a short break.
Why does my Samsung Microwave / Oven not turn on?
Check the power outlet, plug connection, and circuit breaker. Ensure the door is fully closed since safety interlocks prevent operation if the door switch is not engaged.
Why is my Samsung Microwave / Oven not heating food properly?
Weak heating may be caused by magnetron issues, incorrect power settings, or faulty high-voltage components. Check settings first and avoid overloading the cavity.
Why does my Samsung Microwave / Oven make unusual buzzing or humming sounds?
Unusual noise may come from the magnetron, transformer, cooling fan, or loose internal parts. If the noise is loud or persistent, stop using the appliance and inspect it.
Why does my Samsung Microwave / Oven spark inside?
Sparking is usually caused by metal objects, damaged waveguide cover, or food residue buildup. Clean the interior thoroughly and avoid using metal containers.
Why does my Samsung Microwave / Oven smell like burning?
This may be caused by food residue, overheating components, or electrical issues. Stop using immediately, unplug the unit, and clean the interior before restarting.
Why does my Samsung Microwave / Oven door not close properly?
Inspect the door latch, hinges, and seals for obstruction or damage. Clean around the frame and ensure nothing blocks proper closure.
Why does my Samsung Microwave / Oven keep tripping the breaker?
This may indicate electrical overload, short circuit, or faulty internal components. Avoid extension cords and test a different outlet before reuse.
Why does my Samsung Microwave / Oven display unresponsive controls?
Control issues are often caused by keypad failure, moisture on the panel, or PCB malfunction. Disconnect power for a few minutes and restart the system.
How do I reset my Samsung Microwave / Oven?
Unplug the appliance for 5–10 minutes, then plug it back in. This clears temporary system errors and resets internal controls.
Why is my Samsung Microwave / Oven cooking unevenly?
Uneven cooking is usually caused by incorrect placement, weak turntable rotation, or inconsistent power settings. Ensure food is centered and the turntable is working.
When should I service my Samsung Microwave / Oven?
Service is recommended if it stops heating, shows repeated error messages, makes burning smells, or has persistent door or power issues.
Important: Samsung Microwave / Oven system messages are safety features designed to protect internal components. If problems continue after troubleshooting, stop using the appliance and contact an authorized Samsung service center for repair.