De'Longhi
No Power / Dead Unit
Unit does not power on at all; no lights or display on De'Longhi air conditioner.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Tripped circuit breaker, Blown internal fuse on main PCB, Faulty power cord, Defective main control PCB
How to Fix / Troubleshooting
Safety first: If you suspect an electrical burning smell, do not attempt to power the unit again.
- 1. Check outlet and breaker: Test the wall outlet with another appliance. Reset any tripped breakers or replace blown fuses in the home panel.
- 2. Inspect power cord: Look for cuts, burns, or crushed sections. If damaged, replace the power cord assembly.
- 3. Try a different outlet: Plug the unit directly into another known-good outlet (no extension cords).
- 4. Internal fuse (advanced): With the unit unplugged, remove the control panel or rear cover to access the main PCB. Look for a small glass or ceramic fuse. If blown, replace only with the same rating. If it blows again immediately, stop and call a technician.
- 5. PCB replacement: If power is present at the board but no lights or response, the main control PCB may need replacement.
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Repair Difficulty
Medium
3/5
Required Part
Main Control PCB
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