Samsung · Microwave error code
Unlock what this code means, its causes, tests and parts
Full library + AI assistant for $34.90, one time.
Get lifetime accessOnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.
Component test · MicrowaveThe magnetron turns high voltage into microwave energy. An ohmmeter can catch an open filament or a filament shorted to the case, but it cannot prove the tube makes full power. Rule out the HV diode, capacitor and transformer before ordering a magnetron.
Component test · MicrowaveThe HV diode works with the HV capacitor to double the transformer voltage for the magnetron. It is made of many junctions in series, so an ordinary meter only shows it is not shorted. A shorted diode is a classic cause of no heat with a loud hum.
Component test · MicrowaveThe HV capacitor has a built-in bleeder resistor meant to drain its charge, but bleeders fail, so always discharge by hand. A shorted capacitor blows the HV fuse immediately. Resistance tests catch shorts; a capacitance reading is better.
Samsung · Microwave
C-10 / C-11 / C-12
Cooking sensor information code
Samsung · Microwave
C-20 / E-21 / E-22
Temperature sensor open or shorted
Samsung · Microwave
C-21 / E-24
Over-temperature during cooking
Samsung · Microwave
C-70 / C-71 / C-72 / E-71 / E-72
Steam sensor error
Samsung · Microwave
C-A1 / E-A1
Damper not detected
Samsung · Microwave
C-F0 / E-83
Board communication fault