The Samsung CM1229B Oven has some known problems that occur often. Here are some easy to do solutions for the problems or error codes your Samsung might be giving you.
Power frequency Error (50/60Hz) - The circuitry inside the oven is not working correctly.
HVT-I Power Error - The circuitry inside the oven is not working correctly.
HVT-II Power Error - Memory IC (EEPROM IC) is not working correctly. In this case, other features except for memory function work properly.
EEPROM Error - If oven does not operate: Confirm oven is plugged into dedicated circuit.
Air filter check indicator - The air filter check indicator (FILTER) appears in the display window after a certain period of use.