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3. The compressor and the sea water pump are running, but neither the heating
mode nor the cooling mode function satisfactorily. Check whether Eco mode is
activated and the compressor output is therefore reduced.
• Check whether the cold water pump is running. If necessary, check the
power supply to the pump. Check whether the shut-off valves in the cold
water circuit are opened.
• Allow the fan to run in the automatic fan mode.
• Check the air ducts of the air handlers.
• If the sea water flow rate is too low, the sea water in the condenser can
freeze in heating mode, blocking and damaging the system.
• Check the voltage level. Do not operate the system continually with insuci-
ent voltage (under 195 V).
• Heating mode takes a long time to start up. This is normal when the sea
water is very cold. When the temperature of the sea water drops below ap-
prox. 6 °C, the heating eciency decreases and the air-conditioning system
takes a long time before producing the expected heat. Run air-conditioning
system in heating mode for about 60minutes to remove a possible oil
blockage in the refrigerant circuit.
• If the performance of the system is still unsatisfactory after checking all of
the above points, you should have the refrigerant fill level checked.
• An incorrect cabin temperature is displayed. Cabin temperature sensor
positioned incorrectly, fault sources are present or display values are falsified.
Check whether the cabin temperature sensor is subject to direct fault sour-
ces, like direct sunlight or devices radiating heat. Calibrate sensor or replace
defective sensor. Have corrected by a specialist workshop.
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