Daikin · Mini-split
F3 Discharge pipe temperature control fault
What this code means
The compressor's discharge temperature is outside safe operating range.
Most likely causes
- Low refrigerant charge
- Restricted or dirty outdoor coil
- Failing compressor
What to try first
Clean the outdoor coil; beyond that this needs refrigerant gauges and certification.
Safety first: stop using the appliance and shut off its gas or power until it has been inspected — this fault category is associated with fire or gas risk.
FAQ
What does Daikin error code F3 mean?
Discharge pipe temperature control fault. The compressor's discharge temperature is outside safe operating range.
Can I fix Daikin code F3 myself?
No — stop using the appliance and shut off its gas or power until it has been inspected. This fault category is associated with fire or gas risk.
What causes Daikin code F3?
The most common causes are: low refrigerant charge; restricted or dirty outdoor coil; failing compressor.
Other Daikin mini-split codes
All Daikin mini-split error codes →
Other mini-split brands: Mitsubishi · LG · Fujitsu · Gree · Carrier · Generic · Panasonic
This information may contain errors or not apply to your exact model — always double-check it against your appliance's own manual before acting. If there's any chance of a gas, fire, electrical, carbon monoxide, or other safety hazard, stop and call a licensed professional or the appropriate agency (e.g. your gas utility) instead of relying on this page alone.