Pioneer YN018GMFI16M2D Service Manual page 67

9.4.2.7 E8 (Outdoor fan speed has been out of control) diagnosis and solution (Only for DC fan motor
models).
Error Code
Malfunction decision
conditions
Supposed causes
Trouble shooting:
E8
When outdoor fan speed keeps too low (300RPM) or too high (2400RPM)
for certain time, the unit will stop and the LED will display the failure.
● Wiring mistake
● Fan assembly faulty
● Fan motor faulty
PCB faulty
●