101Operating and maintenance instructions for the ventilation unit
Alarm Reason Instruction Solution
Ducts have inadequate
insulation
Check the thickness of insulation in supply
and exhaust ducts, and add insulation if
necessary.
Contact the maintenance.
The protection against
additional heating
overheating has launched.
Find out the cause for the failure and reset the
protection against overheating (® button in
the radiator).
Contact the maintenance.
TE-10 temperature sensor
is faulty
Check from the measurements menu on
the control panel if the supply temperature
measurement is o the charts.
Contact the maintenance.
The motor/gearbox in the
heat exchanger is faulty
Open the access door while the machine is
operating and listen, if the sound comes from
the LTO.
Contact the maintenance.
The LTO controller card is
faulty (EDA models)
The LTO cell is controlled by a separate
controller card that is located in the electric
box of the machine.
Contact the maintenance.
LTO pulley has separated
from the shaft
Check from LTO trace review hole if the shaft is
rotating empty and the pulley is in its place.
Tighten the screw on the pulley.
Contact the maintenance.
Hot supply air
(TE-10 max)
Fire risk
Electrical post-heating faulty Contact the maintenance.
Water heating radiator has a
faulty control valve actuator
Contact the maintenance.
TE-10 temperature sensor
faulty
Check from the measurements menu on
the control panel if the supply temperature
measurement is o the charts.
Contact the maintenance.
Hot room air
(TE-20 max)
Fire risk Contact the maintenance.
TE-20 temperature sensor
faulty
Check from the measurements menu on
the control panel if the room temperature
measurement is o the charts.
Contact the maintenance.
Exhaust air
cold
(TE-30 min)
Ducts have inadequate
insulation
Check the thickness of insulation in supply
and exhaust ducts, and add insulation if
necessary.
Contact the maintenance.
The protection against
additional heating
overheating has launched.
Find out the cause for the failure and reset the
protection against overheating (® button in
the radiator).
Contact the maintenance.
The ventilation unit door is
open
Close the door.
Contact the maintenance.
Low room temperature Raise the room temperature.
Contact the maintenance.
TE-30 temperature sensor
is faulty
Check from the measurements menu on
the control panel if the supply temperature
measurement is o the charts.
Contact the maintenance.
Exhaust air hot
(TE-30 max)
Fire risk Contact the maintenance.
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