Frigidaire Microwave Error Codes

Complete Frigidaire Microwave Guide

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

F1
Touch Pad Error
  • Disconnect power for 5 minutes to reset system.
  • Clean control panel from moisture, grease, or debris.
  • Check ribbon cable connection to control board.
  • Replace touch pad if buttons remain unresponsive.
F2
Overheat Condition
  • Allow microwave to cool completely before reuse.
  • Check ventilation openings for blockage.
  • Inspect thermal sensor or thermostat.
  • Replace thermal cutoff if overheating persists.
F3
Sensor Failure
  • Inspect sensor wiring connections.
  • Test sensor resistance with a multimeter.
  • Check for moisture or corrosion damage.
  • Replace sensor if readings are abnormal.
F4
Door Switch Error
  • Check door alignment and latch mechanism.
  • Inspect door interlock switches.
  • Test continuity of door switch system.
  • Replace door switch assembly if faulty.
F5
Relay Failure
  • Reset microwave power supply.
  • Inspect relay circuit on control board.
  • Check wiring to high-voltage components.
  • Replace control board if relay is defective.
F6
Magnetron Fault
  • Do not operate microwave if fault persists.
  • Inspect high-voltage diode and capacitor.
  • Check magnetron connections and mounting.
  • Replace magnetron if confirmed defective.
F7
High Voltage Transformer Error
  • Check transformer wiring connections.
  • Inspect for burn marks or overheating.
  • Test continuity of high-voltage transformer.
  • Replace transformer if faulty.
F8
Humidity Sensor Fault
  • Inspect humidity sensor wiring.
  • Check for grease or steam contamination.
  • Test sensor response accuracy.
  • Replace sensor if readings are incorrect.
F9
Inverter Board Failure
  • Reset microwave power supply.
  • Inspect inverter board for damage or burns.
  • Check wiring connections to magnetron.
  • Replace inverter board if faulty.
F10
Cooling Fan Failure
  • Check cooling fan for obstruction.
  • Inspect fan motor wiring connections.
  • Test fan motor operation.
  • Replace cooling fan if not running.
F11
Control Board Communication Error
  • Reset microwave by unplugging for 5–10 minutes.
  • Check ribbon cable and wiring harness.
  • Inspect control board for corrosion or damage.
  • Replace main PCB if communication fails.
F12
Keypad Short Circuit
  • Disconnect power immediately.
  • Inspect keypad for moisture or damage.
  • Check ribbon cable connection.
  • Replace touch panel if shorted.
F13
EEPROM Memory Error
  • Reset microwave power supply.
  • Inspect control board connections.
  • Check PCB for damage or corrosion.
  • Replace control board if memory failure persists.
F14
Door Open During Operation
  • Ensure door is fully closed and latched.
  • Inspect door switch system.
  • Check for obstruction in door latch.
  • Replace door switch if faulty.
F15
Power Supply Error
  • Check household power outlet stability.
  • Inspect power cord for damage.
  • Test voltage supply to microwave.
  • Contact electrician if voltage is unstable.
PF
Power Failure Recovery
  • Check household power supply and breaker.
  • Reset microwave by unplugging for 5 minutes.
  • Verify outlet is functioning correctly.
  • Restart cooking cycle after reset.
HOT
Overheat Warning
  • Allow microwave to cool completely.
  • Check ventilation and airflow paths.
  • Clean grease and dust buildup.
  • Do not restart until temperature normalizes.

Frequently Asked Questions


Why is my Frigidaire microwave not turning on?
Check if the microwave is properly plugged in. Ensure the circuit breaker has not tripped. Verify the door is fully closed and latched. Inspect the power outlet for proper voltage.
Why is my Frigidaire microwave not heating food?
Check if the correct power level is selected. Ensure the door switch is working properly. Inspect the magnetron if heating fails completely. Reset the microwave by unplugging for a few minutes.
Why is my Frigidaire microwave sparking inside?
Remove any metal objects or foil inside. Check for damaged waveguide cover. Clean food splatters inside the cavity. Stop use immediately if sparking continues.
Why is my Frigidaire microwave making loud noise?
Check if turntable is properly seated. Inspect fan and motor for obstruction. Ensure no foreign objects are inside. Call technician if grinding noise persists.
Why is my Frigidaire microwave display not working?
Check power supply and outlet connection. Reset the microwave by unplugging it. Inspect control board for faults. Replace display panel if necessary.
Why does my Frigidaire microwave stop mid-cycle?
Check for overheating or blocked ventilation. Ensure door switch is functioning properly. Inspect power supply stability. Allow microwave to cool before restarting.
Why is my Frigidaire microwave door not closing properly?
Check for food or debris blocking the latch. Inspect door hinges for damage. Ensure door hooks align properly. Replace door latch if worn out.
Why is my Frigidaire microwave keypad not working?
Clean control panel surface gently. Check if child lock is enabled. Reset microwave by unplugging it. Replace membrane keypad if faulty.
Why does my Frigidaire microwave smell bad?
Clean interior with mild soap or vinegar solution. Remove food spills immediately after use. Run microwave with water and lemon to deodorize. Check for hidden food residue in vents.
How do I reset my Frigidaire microwave?
Unplug the microwave from the power source. Wait 5–10 minutes before plugging it back in. Reset the clock and settings after restart. Test operation with a short heating cycle.
Why is my Frigidaire microwave not spinning?
Check if the turntable is properly aligned. Clean debris from roller ring area. Inspect turntable motor for faults. Ensure glass tray is not cracked or stuck.
Important: Microwave repairs involve high voltage components. If the issue persists, contact a certified Frigidaire technician.