Samsung · Range / Oven error code

E-27 / E27Oven temperature sensor open

Cross-checked High-voltage / caution

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Related diagnostic guides

Guide · Range / Oven

Oven takes too long to preheat

First confirm it is really slow: many ovens take around 10-15 minutes to reach 350°F, longer with large cavities or convection preheat. On electric ovens a partly failed bake element or a dead broil element (used during preheat on many models) slows preheat. On gas ovens a weak igniter that glows but draws too little current opens the gas valve late or not fully.

5 steps ~45 minmoderate

Guide · Range / Oven

Oven keeps heating when turned off or overheats past setpoint

This is a fire hazard: turn the breaker off first, then diagnose. On electronic controls the usual cause is a relay on the control board whose contacts have welded closed. On dial ovens it is a stuck thermostat or selector contact. Less often a shorted sensor or harness is to blame. On gas ovens, a burner that won't shut off is a gas-valve problem and goes to a licensed gas technician.

7 steps ~60 minadvanced

Guide · Range / Oven

Oven cooling fan keeps running after the oven is off (or never runs)

Electric and many gas ranges and wall ovens have a cooling fan that protects the controls, door and cabinetry; it keeps running after the oven is off until the controls area cools, and cannot be switched off. Running for a while after a long or hot bake is normal; running with the oven cold, starting at power-up or never stopping points to a fan thermostat stuck closed, a welded relay, a bad temperature sensor reading or a control fault. A fan that never runs is a safety issue because the controls overheat.

8 steps ~60 minmoderate

More Samsung range / oven codes

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-dC- / -dE-

Divider (partition) not detected correctly

Cross-checked

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bo / bs

Inverter (IGBT) sensor open (bo) or shorted (bs)

Cross-checked High-voltage / caution

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C-10

Self-diagnosis notice

Single source

Samsung · Range / Oven

C-20 / C-21 / C-22

Oven temperature sensor fault / over-temperature

Cross-checked High-voltage / caution

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C-24

Oven heating too fast / vent blocked

Cross-checked High-voltage / caution

Samsung · Range / Oven

C-30 / C-31

Control board temperature sensor fault / board over-temperature

Single source High-voltage / caution