18
DVUT/DVUE HB(E/E2) EC
www.ventilation-system.com
STORAGE AND TRANSPORTATION REGULATIONS
• Store the unit in the manufacturer’s original packaging box in a dry closed ventilated premise with temperature range
from +5 ˚C to +40 ˚C and relative humidity up to 70 %.
• Storage environment must not contain aggressive vapors and chemical mixtures provoking corrosion, insulation, and sealing
deformation.
• Use suitable hoist machinery for handling and storage operations to prevent possible damage to the unit.
• Follow the handling requirements applicable for the particular type of cargo.
• The unit can be carried in the original packaging by any mode of transport provided proper protection against precipitation and
mechanical damage. The unit must be transported only in the working position.
• Avoid sharp blows, scratches, or rough handling during loading and unloading.
• Prior to the initial power-up after transportation at low temperatures, allow the unit to warm up at operating temperature for at least
3-4 hours.
TROUBLESHOOTING
TROUBLE
POSSIBLE REASONS
Troubleshooting
The fan(s) do(es) not get
started during activation of
the unit.
No power supply.
Make sure the power supply line is connected correct.
Otherwise troubleshoot a connection error.
Motor or impeller clogging.
Turn the unit off. Troubleshoot the fan clogging. Clean
the blades. Restart the unit.
System failure.
Turn the unit off. Contact the product Seller.
Automatic circuit breaker
tripping after the unit start-
up.
Overcurrent as a result of short circuit in the
electric circuit.
Turn the unit off. Contact the product Seller.
Low air flow.
Low set fan speed.
Set higher speed.
Clogged filters, fans or heat exchanger.
Clean or replace the filters. Clean the fans and the heat
exchanger.
Clogged or damaged air ducts, diffusers,
louver shutters, grilles or other ventilation
system components.
Clean or replace the air ducts, diffusers, louver shutters,
grilles or other ventilation system components.
Low supply air temperature.
Clogged extract filter.
Clean or replace the extract filter.
Noise, vibration.
The impeller(s) is soiled.
Clean the impeller(s).
The fan or casing screw connection is loose.
Tighten the screw connection of the fans or the casing
all the way.
No anti-vibration connectors on air duct
pipe flanges.
Install anti-vibration connectors.
Water leakage for the
CIVIC EC LB(E/E2) 300 models.
Drain lime is clogged, damaged or installed
incorrect.
Clean the drain line. Check the drain line slope. Make
sure that the U-trap is filled with water and that drain
hoses are frost protected.
The alarm indicator
glows on the control panel
(for the units with A14 control
panel).
Communication loss (cable or wire
breakdown) between the control panel and
the ventilation unit.
Check the power and connection cables and wires
between the control panel and the air handling
unit for integrity using a multimeter. If unassisted
troubleshooting fails, please contact the product Seller.
Wrong cable installation.
Make sure the cable installation is completed according
to the requirements stated in the user’s manual for the
control panel. Otherwise install the cable as required.
System failure.
Contact the product Seller.
