10yo Fujitsu Multi-Zone Mini Split: Room A freezes to 60°F, Room B gets fan air only. EEV issue?
Hey everyone, looking for feedback before calling out a technician for my 10yo Fujitsu multi-zone mini-split (1 outdoor unit, 2 bedroom heads).
The issue:
- Bedroom 1: Cooling nonstop. Even when set to 72°F, it pulls the room temperature down to ~60°F.
- Bedroom 2: Fan runs fine, but blows ambient room-temp air only (no cooling).
Filters are clean. Is this a classic stuck Electronic Expansion Valve (EEV), a bad board/sensor, or low refrigerant charge starving the second head? Any specific troubleshooting steps I should run before calling a pro? Thank you!