Error code
live-indicator-lamp-long-blink Indicator lamps blinking or fault code shown
How it shows on the unit Indicator LEDs blink for a longer period, or the display shows a fault code in the form Ex, Px or Fx
Applies to 8 models
What this means
The self-diagnosis function has detected a fault during operation. The manual prints no meanings for the individual fault codes.
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.
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.
Using Claude Code or Meta Muse? Connect HeatPump AI and ask it about live-indicator-lamp-long-blink.