Error code

F3 Discharge-pipe high temperature

Fault

Daikin · FVXM-F

Applies to 3 models
FVXM25FV1B9, FVXM35FV1B9, FVXM50FV1B9

What this means

The compressor discharge pipe temperature is too high.

When to call a technician

This fault involves refrigerant, pressure, or electrical work that must be handled by a certified technician under EU F-gas rules. Do not attempt to open the refrigerant circuit, access mains wiring, or adjust pressure components yourself. Contact a qualified installer or servicer for this one.

Using Claude Code or Meta Muse? Connect HeatPump AI and ask it about F3.