Code index · 5 entries
Daikin AC / heat pump error codes
What does your Daikin AC / heat pump error code mean? 5 codes from official Daikin AC / heat pump documentation. Select a code for causes, how to fix it safely and when to call a pro. Daikin manufacturer manual (PDF) (opens in a new tab) ↗.
4 of these 5 Daikin AC / heat pump pages are marked call-a-pro because the source document points at gas, venting, refrigerant, high voltage or a control the manual does not leave to a homeowner. The other 1 start with a check the document describes, then say when to stop.
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Freeze-up protection or heating peak-cut: the indoor heat exchanger got too cold in cooling or too hot in heating.
Indoor fan motor fault: the DC fan is not reaching the speed the control asked for.
Outdoor fan lock: the outdoor fan does not start within 15 to 30 seconds.
Four-way valve abnormality: room temperature and indoor coil temperature stay out of range for the mode.
Signal transmission error between the indoor unit and the outdoor unit.
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Source: Daikin manufacturer manual (PDF) (opens in a new tab) ↗ · Last updated