Panasonic ERV+DX Series Installation, Use And Maintenance Manual page 30

SECtIoN 7 - BrEaKDoWN DIagNoStIC
SymPtomS
fans not running
Poor cooling/heating performan-
ce
Excessive air flow
Insufficient air flow:
Noise:
Strong vibrations:
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.
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)
page 30
PoSSIBlE CaUSE
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.
Too low airflow.
Insufficient refrigerant fill (check refrigerant circuit).
Compressor off (check outdoor condenser unit).
Pressure drop of the system are overvalued.
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.
Excessive air flow.
Wear or crack in the pads.
Unbalanced fan.
Foreign bodies in the case.
Unbalanced impeller because of wear or of dust deposit.
Sliding of the impeller on the case due to deformations.
Cloggings in the air ducts
Installation, Use and Maintenance Manual - ERV+DX series