enervent eWind Series - Page 41

41Installation instructions
EN
Alarm Description
Alarm
limit
Symptoms Possible reason Action Notes
AL6 Extract air
cold.
+10 °C Supply air
cold.
Indoor temperature is low. Rise the indoor
temperature.
The ventilation
unit enters the
malfunction
status, which
means that
the fans are
at minimum
speed.
The alarm is
automatically
acknowledged
after the fault
condition is
removed.
Extract air duct heat
insulation is insucient.
Check the insulation
of the ducts and add
insulation if needed.
Ventilation unit service
hatch is open.
Close the service hatch.
TE30 temperature sensor is
faulty.
Repair or change the
sensor.
AL7 Supply air hot.
Fire hazard.
+55 °C Supply air hot. Fire hazard. Check for any heat
sources.
The unit will
not start before
the alarm
condition has
been removed
and the
ventilation unit
restarted.
Electrical after-heater is
malfunctioning.
Repair or replace the
electrical after-heater.
Water after-heater valve
actuator is malfunctioning.
Repair or replace the
valve actuator.
TE10 temperature sensor is
faulty.
Repair or replace the
temperature sensor.
AL8 Electric after-
heater or
pre-heater
overheating.
Supply air hot. Electric pre- or after-heater
is not functioning:
• Overheating protector has
tripped.
• Supply air fan has stopped.
• Supply air lter is blocked.
• Outside air grating is
blocked.
• Controller card of heater is
broken.
• Heater is broken.
Find out the reason
for overheating and
acknowledge the error
message.
Find out reason / replace
the fan.
Replace the lter.
Clean the grating.
Remove possible
mosquito net.
Replace the controller
card.
Replace the heater.