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TROUBLESHOOTING
Problem
The fan(s) do(es) not get
No power supply.
started.
Extract filter clogging.
Cold supply air.
The heat exchanger is frosted.
Filters, fans or the heat exchanger are soiled.
Low air flow.
The ventilation system is soiled or damaged.
The fan impeller is soiled.
Noise, vibration.
The fan or casing screw connection is loose.
Water leakage
The drainage system is soiled, damaged or
(only for the
arranged not correctly.
VUT 250 V/H mini A12/A1).
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 ˚С up to +40 ˚С and relative humidity up to 70 %.
•
Storage environment must not contain aggressive vapours 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 room temperature for at least 3-4
hours.
www.ventilation-system.com
Possible reasons
Troubleshooting
Make sure the power supply line is connected correctly, otherwise
troubleshoot a connection error.
Clean or replace the extract filter.
Check the heat exchanger for icing. Switch the unit off if required and
turn it on after the freezing danger is no longer imminent.
Clean or replace the filters, clean the fans, and the heat exchanger.
Clean the ventilation system components.
Replace the damaged components.
Clean the impellers.
Tighten the screw connection of the fans or the casing all the way.
Clean the drain line. Check the drain line slope angle. Make sure that
the U-trap is filled with water and the drain pipes are frost protected.
17
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