Error code
horizontal-vane Horizontal vane attachment fault
How it shows on the unit All operation lamps flash together: 0.5-second on, 0.5-second off
Applies to 7 models
MSZ-GE22VA - E1, MSZ-GE25VA - E1, MSZ-GE35VA - E1, MSZ-GE42VA - E1, MSZ-GE50VA - E1, MSZ-GE60VA - E1, MSZ-GE71VA - E1
What this means
The horizontal vane interlock is not engaged correctly, so the indoor and outdoor units do not operate.
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 horizontal-vane.