Climma CWS 121RC, Инструкция по установке, эксплуатации и обслуживанию, Страница: 17 / 27

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7- TROUBLESHOOTING
CWS Basic 121-161-201-251
7-1 Central unit
Problems to the CWS central unit may be caused by:
Lack of cooling water circulation (sea water circuit). Check the sea
water circuit outlet. Long running without cooling water may damage
the system.
It's better to check also the sea water circuit without starting up the con-
ditioning system.
Problems of main supply (low voltage). A permanent low voltage supply
may damage the electrical components of the unit and even the com-
pressor motor. Do not insist to run the system in low voltage conditions.
The fan coil doesn't run: make sure first that the control panel is properly set to yhe desi-
red "Mode" function ("Cool" in summer and "Heat" in winter) and that the thermostat is tur-
ned completely to "18" for summer operations and to "24" for winter operations. Then
check the connecting plugs. If the plugs are ok, then test the voltage at the plug terminals
once the "Max" speed is selected. The voltage between the black and the blue wires must
be 230V. If the voltage is correct, then the fan motor is defective and must be replaced.
Give to the service every detail about the fan coil and, if possible, about the motor in order
to get the correct spare. Be aware that the fan coil motor must run with its specified run
capacitor, which is installed in the control box. If there is no voltage, then check the chan-
ge over switch and the thermostat on the control panel.
7.2 - Fan Coil