Haier Microwave Error Codes

Complete Haier Microwave Guide

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

F1
Temperature Sensor Open
  • Check temperature sensor wiring connection.
  • Inspect sensor for physical damage.
  • Test continuity with multimeter.
  • Replace sensor if circuit is open.
F2
Temperature Sensor Shorted
  • Inspect sensor wiring for short circuit.
  • Check connector pins for corrosion.
  • Test resistance values.
  • Replace sensor if shorted.
F3
Keypad Communication Error
  • Inspect ribbon cable connection.
  • Clean control panel contacts.
  • Reset power to unit.
  • Replace control board if needed.
SE
Control Panel Shorted
  • Disconnect power immediately.
  • Check keypad for moisture damage.
  • Inspect membrane switch panel.
  • Replace control panel assembly.
F4
Door Switch Fault
  • Check door latch alignment.
  • Inspect door switch operation.
  • Ensure door closes fully.
  • Replace door switch if faulty.
F5
Cooling Fan Malfunction
  • Inspect fan motor for obstruction.
  • Check wiring connections.
  • Clean dust buildup.
  • Replace fan motor if not working.
F6
Overheat Protection Activated
  • Allow unit to cool completely.
  • Check airflow vents for blockage.
  • Inspect cooling fan operation.
  • Reset appliance after cooling.
F7
Relay Failure
  • Inspect control board relay contacts.
  • Check for burned components.
  • Test electrical continuity.
  • Replace main PCB if faulty.
F8
Power Supply Fault
  • Check outlet voltage stability.
  • Inspect power cord for damage.
  • Reset circuit breaker.
  • Replace internal fuse if needed.
F9
Control Board Failure
  • Power cycle the appliance.
  • Inspect PCB for burn marks.
  • Check wiring harness connections.
  • Replace control board if necessary.
F10
Communication Error
  • Reset power for 5–10 minutes.
  • Inspect wiring between modules.
  • Check for moisture on connectors.
  • Replace PCB if error persists.
F1
Temperature Sensor Open
  • Check temperature sensor wiring connection.
  • Inspect sensor for physical damage.
  • Test continuity with multimeter.
  • Replace sensor if circuit is open.
F2
Temperature Sensor Shorted
  • Inspect sensor wiring for short circuit.
  • Check connector pins for corrosion.
  • Test resistance values.
  • Replace sensor if shorted.
F3
Keypad Communication Error
  • Inspect ribbon cable connection.
  • Clean control panel contacts.
  • Reset power to unit.
  • Replace control board if needed.
SE
Control Panel Shorted
  • Disconnect power immediately.
  • Check keypad for moisture damage.
  • Inspect membrane switch panel.
  • Replace control panel assembly.
F4
Door Switch Fault
  • Check door latch alignment.
  • Inspect door switch operation.
  • Ensure door closes fully.
  • Replace door switch if faulty.
F5
Cooling Fan Malfunction
  • Inspect fan motor for obstruction.
  • Check wiring connections.
  • Clean dust buildup.
  • Replace fan motor if not working.
F6
Overheat Protection Activated
  • Allow unit to cool completely.
  • Check airflow vents for blockage.
  • Inspect cooling fan operation.
  • Reset appliance after cooling.
F7
Relay Failure
  • Inspect control board relay contacts.
  • Check for burned components.
  • Test electrical continuity.
  • Replace main PCB if faulty.
F8
Power Supply Fault
  • Check outlet voltage stability.
  • Inspect power cord for damage.
  • Reset circuit breaker.
  • Replace internal fuse if needed.
F9
Control Board Failure
  • Power cycle the appliance.
  • Inspect PCB for burn marks.
  • Check wiring harness connections.
  • Replace control board if necessary.
F10
Communication Error
  • Reset power for 5–10 minutes.
  • Inspect wiring between modules.
  • Check for moisture on connectors.
  • Replace PCB if error persists.
F11
Humidity Sensor Fault
  • Check sensor wiring harness.
  • Inspect for moisture buildup.
  • Test sensor resistance values.
  • Replace sensor if readings are unstable.
F12
Magnetron Overheat Protection
  • Allow unit to cool before restart.
  • Check cooling fan operation.
  • Inspect airflow vents.
  • Replace magnetron if overheating persists.
F13
High Voltage Diode Failure
  • Disconnect power immediately.
  • Inspect high-voltage diode condition.
  • Check capacitor for bulging or leakage.
  • Replace faulty high-voltage components.
F14
Turntable Motor Failure
  • Check turntable alignment.
  • Inspect motor coupling.
  • Test motor resistance.
  • Replace turntable motor if needed.
F15
Inverter Board Fault
  • Inspect inverter PCB for damage.
  • Check wiring connections.
  • Reset appliance power.
  • Replace inverter board if faulty.
F16
Door Interlock Failure
  • Check door latch alignment.
  • Inspect interlock switches.
  • Ensure door closes fully.
  • Replace interlock assembly if needed.
F17
Thermal Fuse Blown
  • Disconnect power immediately.
  • Inspect thermal fuse continuity.
  • Check overheating cause.
  • Replace thermal fuse and test again.
F18
Low Voltage Supply Error
  • Check household voltage supply.
  • Inspect outlet and breaker condition.
  • Avoid extension cords.
  • Contact electrician if voltage is unstable.
F19
Internal Memory Fault
  • Power cycle appliance for 10 minutes.
  • Inspect control board memory section.
  • Check for moisture or corrosion.
  • Replace main PCB if error persists.
F20
General System Failure
  • Restart appliance power cycle.
  • Inspect all wiring connections.
  • Check control board health.
  • Replace PCB if malfunction continues.

Frequently Asked Questions


Why is my Haier microwave not heating food?
Check that the microwave is set to the correct power level and cooking mode. Ensure the door is fully closed and latched. If it still does not heat, the magnetron or high-voltage components may need inspection.
Why is my Haier microwave not turning on?
Check the power outlet and circuit breaker. Make sure the plug is secure, test another outlet, and inspect the internal fuse if there is still no power.
Why is my Haier microwave sparking inside?
Remove any metal objects or foil. Clean the interior cavity and waveguide cover. If sparking continues, inspect the mica sheet or high-voltage diode.
Why does my Haier microwave shut off during cooking?
Check for overheating due to blocked vents or long usage. Allow the unit to cool down and ensure proper airflow around the microwave.
Why is my Haier microwave door not opening?
Check if the latch is stuck or damaged. Gently press and release the door. If the issue continues, inspect the door interlock switch mechanism.
Why is my Haier microwave making loud humming noise?
This may indicate a faulty magnetron, capacitor, or diode. If the noise is loud or unusual, stop using the microwave and inspect internal components.
Why is my Haier microwave display not working?
Check power supply and reset the unit. Inspect control board connections and ribbon cable. Replace the control panel if the display remains blank.
Why is my Haier microwave keypad not responding?
Clean the keypad surface and ensure it is not locked. Check ribbon cable connections and reset the microwave. Replace touchpad if buttons are unresponsive.
Why does my Haier microwave turn on by itself?
Check for stuck buttons or moisture on the control panel. Reset the microwave by unplugging it for a few minutes. If the issue continues, the control board may be faulty.
Why is my Haier microwave not defrosting food properly?
Ensure correct defrost mode and weight/time settings. Check turntable operation and restart the unit. If performance is weak, inspect magnetron output.
Why is my Haier microwave producing smoke?
Stop use immediately. Clean any food debris or grease inside the cavity. Ensure no packaging or metal is inside during operation.
How do I reset my Haier microwave?
Unplug the microwave for 5–10 minutes. Plug it back in, set the clock, and test with a short heating cycle.
Why is my Haier microwave not rotating the plate?
Check if the turntable is properly seated. Inspect the roller ring and motor drive. Clean any debris under the plate.
Why is my Haier microwave door not closing properly?
Check for obstructions in the door latch area. Inspect hinges and alignment. Replace the door switch assembly if damaged.
Why is my Haier microwave running but not heating evenly?
Check food placement and turntable operation. Ensure correct power level is selected. If uneven heating continues, magnetron performance may be weak.
Important: If the error code continues after troubleshooting, disconnect power immediately and contact a certified GE technician.