CLIMAVENETA a-CXW 1102, Руководство пользователя и инструкция по установке

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67
EN
FAULTS AND SOLUTIONS
Fault Possible cause Solution
The fan does not
work *
The fan is not on Switch on the fan
No power Check the fuse/power supply
The cables are not connected Connect the cables (qualified personnel only)
The power supply is disconnected at the main switch Check the float
Insufficient air flow
from the fan
Low fan speed Select a higher fan speed
Air duct blocked Clean the air duct to restore normal air flow
Filter dirty Replace or clean the filter
The fan is noisy
High fan speed Select a lower fan speed
Low air supply temperature Increase the temperature setting on the controller
Air exhaust system blocked Clean the air exhaust system
Faulty fan support Contact service
Filter dirty Replace or clean the filter
The fan coil does
not heat the room
(sufficiently)
The fan is not on Switch on the fan
The heat transfer fluid is not hot
Start the boiler
Switch on the circulating pump
Vent the heating system
Low water flow-rate
Check pump performance
Check the water distribution system and set the pres-
sure drop values on the different lines
Temperature set point too low Increase the temperature set point on the controller
The controller is located near a heat source Place the controller elsewhere
Filter dirty Replace or clean the filter
The fan coil does
not cool the room
(sufficiently)
The fan is not on Switch on the fan
The cooling fluid is not cold
Switch on the chiller
Switch on the circulating pump
Vent the system
Low water flow-rate
Check pump performance
Check the water distribution system and set the pres-
sure drop values on the different lines
Temperature set point too high Decrease the temperature set point on the controller
The controller is installed in a cold place (for example:
near a door)
Place the controller elsewhere
Filter dirty Replace or clean the filter
Leaks occur in
cooling mode
Dirty condensate drain pan Clean the condensate drain pan
The cold water lines are not insulated Insulate the cold water lines
The unit must be installed horizontally Realign the unit and fix it horizontally
Condensate drain blocked
Check that the condensate drain has a sufficient slope,
clean and fill the drain trap
The condensate drain pump does not pump water
Check the power supply to the terminal block and
pump
Check that the pump intake area is not dirty
Make sure the pump starts
Check correct operation of the float switch
Condensate on the air damper
Increase the water outlet temperature
Increase the angle between the louvres and the ceiling
Use a lined damper
Increase the fan speed
The temperature
in the room is not
constant
Controller installed in the wrong place (e.g.: near doors
or in the air exhaust flow)
Reposition the controller in a place where the room
temperature is more representative (away from the fan
coil)
Add or reset the maximum and minimum air distribu-
tion temperature sensors
High heat transfer fluid temperature Set the boiler controller again
Units with independent control connected to the same
water line (e.g. radiators with thermostatic valves)
Divide the water supply; if this is not possible, use
flow control valves on other units and increase system
pressure
* For PSC motors (permanently split capacitor), check the capacitance value, expressed in µF. The capacitance value is shown on both
the capacitor and the motor labels.
Make sure that the measured value is not less than 80% of the nominal value. Replace if necessary.