Check these first, whatever the brand
- Switch off at the breaker first
Turn the air conditioner off at its own breaker or the isolator next to the outdoor unit before you go near it.
- Clear snow, ice and leaves outdoors
LG and Samsung both mention snow and debris. Clear what you can reach from outside the grille. Never put fingers or tools through the grille.
- Check the indoor air outlet
With the power off, look for anything stuck in the outlet that could stop the fan. Don't take the casing off.
- Switch back on once
Wait a few minutes, switch back on and restart. If the same code returns, stop and book a repair.
When it's time for an engineer
If nothing is blocking the fan, the makers point to the fan motor, its wiring or the control board. An engineer checks whether the fan turns freely and whether the motor gets power.
Questions people ask
What does a fan error mean on an air conditioner?
The indoor or outdoor fan isn't turning at the right speed, so the unit stops to protect itself. Daikin shows A6 for the indoor fan and E7 for the outdoor fan, LG CH10 and CH67, Samsung E154 and E458, and Mitsubishi Electric U8 for the outdoor fan.
Can snow or ice cause a fan error?
Yes. LG and Samsung both mention snow, and ice or leaves can jam an outdoor fan. Switch off at the breaker and clear it from outside the grille.