Installation, Use and Maintenance Manual - ERV+DX series
page 30
SECtIoN 7 - BrEaKDoWN DIagNoStIC
SECtIoN 8 - DISmaNtlINg
At the end of their use the units will be disposed of, in observance of the norms in force.
In particular, the European Directive 2002/96/CE about the electric and electronic equipments wastes, prescribes the waste disposal outside
the normal waste flow. The materials of the dismantled units have to be separately picked up to optimise the recycling of the materials that
constitute them and prevent possible damages for health and environment.
The materials that compose the units are:
• Galvanized plate
• EPS (expanded polystyrene)
• Polyethylene
• ABS plastic (acrylonitrile butadiene styrene)
• NBR (nitrile butadiene rubber NBR)
When the failure cannot be easily solved, you have to disconnect the equipment from electrical power and contact the distributor
company or an authorized technical assistance centre, having care of quoting the identification data of the unit that you can find
on the correspondent label.
SymPtomS
PoSSIBlE CaUSE
fans not running
No power supply.
The switches of the thermostat are not in the right position of working.
There are foreign bodies that block the rotors.
Electrical connections are released.
Poor cooling/heating performan-
ce
Too low airflow.
Insufficient refrigerant fill (check refrigerant circuit).
Compressor off (check outdoor condenser unit).
Excessive air flow
Pressure drop of the system are overvalued.
Insufficient air flow:
Pressure drop of the system are underestimated.
Cloggings in the air ducts.
Rotation speed too low:
verify on the terminal board of the motor that the connection is correct and that the volta-
ge correspond to that of the nameplate.
The rotor turn backwards.
Noise:
Excessive air flow.
Wear or crack in the pads.
Unbalanced fan.
Foreign bodies in the case.
Strong vibrations:
Unbalanced impeller because of wear or of dust deposit.
Sliding of the impeller on the case due to deformations.
Cloggings in the air ducts
En
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lis
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DC MAN I 00 ERVDX 01 - Man. Inst. CFR microDX - Panasonic_SIC 11/10/2013 8.20 Pagina 30
