AIRWALL
17
8
FAULT DIAGNOSIS
In case of failure, refer to the following table for quick solutions:
DISPLAY CODE
PROBABLE CAUSE
INSPECTION METHOD
E-STALL
Blocked
Unplug the fan from the power for 10s.
Restart.
E-OV
Voltage above level
Check input voltage less than 282V.
Check power connections.
E-UV
Voltage below level
Check input voltage more than 85V.
Check power connections.
E-IPM
Fail connexion
Check the connections of wires.
Check power cable.
Rd:ER!E-XT
Communication error
Check the communications wiring connections from the control
screen to the power card.
E
–
OT
Excessive temperature
Clean the dust from the control board and filter with a soft dry cloth.
Check that the indoor fan is not clogged and is working properly.
