Error code
dF Automatic defrost status
Applies to 8 models
Aero 603-1 I, Aero 604-1 I, Aero 605-1 I, Aero 607-1 I, Aero 603-1 O, Aero 604-1 O, Aero 605-1 O, Aero 607-1 O
What this means
The unit is automatically defrosting; indoor and outdoor fans stop temporarily, then heating resumes automatically. This is no error or fault.
What you can check yourself
- Wait for defrosting to finish; normal heating resumes automatically.
Still not resolved? Contact a qualified installer or servicer.
See the official IVT manualA deep link to the manufacturer's own PDF for full technical detail. We link to manuals, we never host them.
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