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Error code · Microwave

Samsung Microwave Code E-45: Cooling Problem

A cooling error is the entire message of E-45 on Samsung US microwaves. The oven relies on a cooling fan and airflow path to carry heat away from the electronics, and the control has seen a…

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Code
E-45
Appliance
Microwave
Brand
Samsung
Warranty
30-day workmanship

What E-45 means

A cooling error is the entire message of E-45 on Samsung US microwaves. The oven relies on a cooling fan and airflow path to carry heat away from the electronics, and the control has seen a sign that cooling is not working as it should. It stops cooking to protect itself and shows the code until it is reset, because running hot without cooling can harm the electronics.

Common causes of E-45

  • Airflow that is blocked at the vents or around the cabinet
  • A cooling fan that is not running or is running weakly
  • A circuit that reports the fan state wrongly
✓ One safe check you can try

1. Stop cooking and let the oven cool with the door open. 2. Make sure the vents are clear and nothing is stacked against or over the oven. 3. Unplug it or switch the breaker off, and let any moisture dry. 4. Give it 60 seconds, then power on. 5. If E-45 comes back, keep the oven off and request service.

! Why to stop there
  • A blocked vent and a failing fan produce the same message, so airflow is checked before the fan.
  • We confirm that the fan and its circuit behave normally under load.
  • We tell you the price in writing before work and cover it with our 30-day workmanship warranty.
Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.
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Other Microwave codes

TESamsung Microwave Code TE: Touch Panel Communication E-52Samsung Microwave Code E-52: Memory Circuit Shorted E-53Samsung Microwave Code E-53: Memory Read or Write Failed E-54Samsung Microwave Code E-54: Zero Reading E-61Samsung Microwave Code E-61: Humidity Sensor Open E-62Samsung Microwave Code E-62: Humidity Sensor Shorted E-63Samsung Microwave Code E-63: Humidity Sensor Timed Out E-71Samsung Microwave Code E-71: Steam Sensor Open
E-45E-45 questions
Can I cook anything while E-45 shows?

It is better not to. A microwave without proper cooling can overheat its electronics. Give it time to cool, clear the vents, and call us if the code repeats.

Where are the cooling vents?

They vary by model, usually on the back, top or sides, and over-the-range units draw air through the grille. Look for anything covering them, and keep cooking sprays away.

Could grease cause it?

Over-the-range ovens collect grease around their fan and vents. We clean and check those areas when we find them clogged, and we tell you what we saw.

Book a visit

Still seeing E-45?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 561-5298