Error code
3-time flash Indoor fan motor fault
How it shows on the unit Upper operation-indicator lamp: 3 flashes followed by 2.5 seconds OFF
Applies to 16 models
MSZ-AP25VG-E1, MSZ-AP25VG-EN1, MSZ-AP35VG-E1, MSZ-AP35VG-EN1, MSZ-AP42VG-E1, MSZ-AP42VG-EN1, MSZ-AP50VG-E1, MSZ-AP50VG-EN1, MSZ-AP25VGK-E1, MSZ-AP25VGK-EN1, MSZ-AP35VGK-E1, MSZ-AP35VGK-EN1, MSZ-AP42VGK-E1, MSZ-AP42VGK-EN1, MSZ-AP50VGK-E1, MSZ-AP50VGK-EN1
What this means
The indoor fan motor is not providing the expected rotational feedback during operation.
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 3-time flash.