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15
VENTO Ergo A50/50-1 Pro
3. Outer ventilation hood maintenance (once a year).
The outer ventilation hood grill may get clogged with leaves and other
objects that reduce the unit performance.
Check the outer ventilation hood twice a year and clean it as often as
required.
Cleaning of the outer ventilation hood:
•
remove the upper part of the outer ventilation hood:
Fig. 26 - the models VENTO Ergo A50 Pro and VENTO Ergo A50-1 Pro;
Fig. 27 - the models VENTO Ergo A50 S Pro and VENTO Ergo A50-1 S Pro.
•
clean the outer ventilation hood and the air duct.
Fig. 26.
Fig. 27.
Fault
Possible reasons
Fault handling
The fan does not start
when the unit is on.
No power supply.
•
Make sure of correct power supply, otherwise troubleshoot
the connection error.
Jammed motor, soiled impeller blades.
•
Turn the unit off.
•
Troubleshoot the motor jam and the impeller clogging.
Clean the blades.
•
Restart the unit.
Automatic switch tripping
during the unit start.
Short circuit in power grid as a result of short circuit.
•
Turn the unit off.
•
Contact the seller.
Low air flow.
Low set fan speed.
•
Set higher speed.
The filters, the fan or the heat exchanger are soiled.
•
Clean or replace the filter.
•
Clean the fan and the heat exchanger.
•
For the heat exchanger and the filter maintenance, refer
page 13.
Sound signals.
The motor meter signals about the need to replace the
filters.
•
For the heat exchanger and the filter maintenance, refer
page 13.
Noise, vibration.
The impeller is soiled.
•
Clean the impeller.
Loose screw connection of the unit casing or the outer
ventilation hood.
•
Tighten the screws of the unit or the outer ventilation
hood.
TROUBLESHOOTING AND FAULT HANDLING
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