enervent Neo eWind, Installation Instructions Manual

Page: 108 / 128

108
Problem Reason Help Solution
AL2
Supply air is cold
after the rotary heat
exchanger.
The heat exchanger belt has broken. The heat exchanger has a
green belt. Check the heat
exchanger rotor from the belt's
control hole. If the belt is not
visible, it is broken. Change the belt.
The heat exchanger belt-wheel is oily
and the belt is slipping The heat exchanger has a
green belt. Check the heat
exchangers rotor from the
belt's control hole if the belt
wheel is rotating even if the
heat exchanger rotor is not
rotating. Change the belt.
Error in the heat exchanger motor/
gearbox Open the service hatch while
the unit is on and listen if the
noise is coming from the heat
exchanger. Contact a service representive.
AL3
Supply air is cold
The exhaust fan has stopped. Open the service hatch when
the unit is running. The exhaust
fan needs to be on. With the
LTR unit you must push down
the door coupling with a
screwdriver and check if the
unit starts. Change the fans.
The exhaust filter is clogged. Open the service hatch when
the unit is not on. Remove the
filters and check if they are
dirty. Change the supply air filter.
The ventilation unit runs with a too
low fan speed. The correct fan speed was
chosen when the ventilation
was balanced in your house.
Check your ventilation
installation sheet for the
correct fan speeds. Adjust the fan speed from the control panel.
Contact a service representive.
The ventilation is adjusted incorrectly. Contact the company that has installed your
ventilation unit and check if the houses
airflow/valves has been adjusted correctly.
Contact a service representive.
AL4
Supply fan malfunction
The supply air fan has stopped Open the service hatch when
the unit is running. The exhaust
fan needs to be on. With the
LTR unit you must push down
the door coupling with a
screwdriver and check if the
unit starts. Contact a service representive.
AL5
Extract fan malfunction
The exhaust fan has stopped. Open the service hatch when
the unit is running. The exhaust
fan needs to be on. With the
LTR unit you must push down
the door coupling with a
screwdriver and check if the
unit starts. Change the fans.
Contact a service representive.