Nibe AG-WL10 series - Page 22

ActionPossible causeLED lampsError
code
Faulty heat exchanger sensor on the indoor
unit.
E4
■
Check that the sensor is connected to the
circuit board, according to the electrical
wiring diagram. See page 26.
■
Check if the sensor is damaged and replace
if necessary.
Faulty room sensor on the indoor unit.E5
■
Check that the sensor is connected to the
circuit board, according to the electrical
wiring diagram. See page 26.
■
Check if the sensor is damaged and replace
if necessary.
Fault in the fan motor.E6
■
Check that the fan motor is connected to
the circuit board, according to the electrical
wiring diagram. See page 26.
■
Check that the fan motor is not blocked.
■
Check if the fan motor is damaged and re-
place if necessary.
Faulty combination of indoor and outdoor
units.
E8
■
Check that the correct combination of out-
door and indoor units was selected when
the installation was installed.
■
Check if any of the indoor units in the system
has a communication error. If so, rectify it
first.
AG-WL10Chapter 8 | Disturbances in comfort22