e0
Moderate
Daikin · Mini-Splits & Ductless Systems
Outdoor Unit Protective Device Activated
Quick Answer
Error code E0 on your Daikin Mini-Splits & Ductless Systems means: Outdoor Unit Protective Device Activated. This is usually fixable — see the step-by-step guide below.
Likely Causes
How to Fix It
1
Check the outdoor unit for any tripped circuit breakers or blown fuses
2
Inspect the condenser coil for dirt and debris, clean if necessary
3
Allow the compressor overload to reset by waiting 30 minutes with power off
4
Check compressor terminal connections for tightness and signs of overheating
5
A licensed HVAC technician should diagnose the specific protective device that activated
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Outdoor unit fuse
High-pressure switch
Compressor overload protector
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