Troubleshooting - York Laser Gebrauchs - Und Wartungsanweisungen

7.3 TROUBLESHOOTING

1
Here is a list of possible problems and malfunctions, their causes and the procedures that
you or the technician service must perform to correct the malfunction.
2
PROBLEM
The unit does not deliver air
3
4
5
6
The fan coil issues an anomalous noise
7
The motor speed does not change
when different speeds are selected
8
Insufficient water and/or air volume
9
The air delivered by the unit is not hot
or cold enough
10
+
In case of other problems, contact the area distributor or YORK service department.
In case of fire, in order to prevent risk of electrocution, do not use water.
Use powder or CO
38
POSSIBLE CAUSE
Lack on the power supply
Set - Point reached
In presence of WS (minimum water
temperature thermostat), hot water
temperature < 35°C, insufficient water
flow and/or temperature in coil, or dam-
aged water sensor (WS)
Burnt autotransformer and/or electric
fan
The filter and/or the coil is clogged
Vibrations caused by a wrong installa-
tion and/or loose fixing screws
Unbalanced fan deck
The autotransformer is burnt out
The filter and/or the coil is clogged
The fan speed is too low
Water and/or air temperature at the en-
try of the fan coil does not comply with
the expected values
The pump is not powerful enough to
handle operational requirements
extinguishers.
2
SOLUTION
Verify the network voltage and/or the in-
tegrity of the fuse on the electronic card
of the control and the rightness of the
electrical connections
Check the control setting
Check the water temperature and water
flow on the coil and/or the correct work-
ing of the water sensor (WS)
Replace the damaged components
Clean the filter and/or the coil
Verify carefully and carry out the correc-
tive actions
Replace it
Replace the damaged component
Clean the filter and/or the coil
Change the position of the speed se-
lector
Verify the available power and the in-
stalled power. Operate accordingly
Replace the pump with a pump suitable
to the installation requirements