Subject to alterations
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Fault finding
If problems arise during operation, please check the following before calling the service centre.
Check whether the alarm LED on the front of the CTS 602 control panel is flashing. If so, investi-
gate the cause of the alarm and remedy the fault. If necessary, contact your local service centre.
For details of alarms and how to reset them, please refer to the operating instructions for the CTS
602 controls.
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Compact Polar Køl Sol EK 3/9 Polar is operating but with reduced output.
Check that sufficient air is being supplied to Compact Polar Køl Sol EK 3/9. Check filters for
excessive dirt accumulation. Check that valves are sufficiently open. In 98% of cases, the
fault is caused by clogged filters. If necessary, increase the ventilation step. Any dampers
to the open air should be shut at outdoor temperatures lower than 6°C.
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Compact Polar Køl Sol EK 3/9 is operating but there is no hot water.
Check whether the tank has been emptied of hot water. If the system is equipped with a
circulation pump but the circulation circuit has not been insulated, considerable heat loss
may result, significantly reducing Compact Polar Køl Sol EK 3/9 capacity.
Has the required water temperature (T12) been set correctly in the CTS controls? Usually,
water temperature should be set to between 45 and 55°C. Please refer to the CTS 602 op-
erating instructions for details on checking and setting water temperature.
Is the air supplied too cold or the quantity supplied too low? Check filters and valves. Check
whether duct insulation is sufficient and complete.
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Compact Polar Køl Sol EK 3/9 is not operating.
Check whether a fuse has blown. Check whether the hot water safety thermostat has cut
out. If it has, press the button and the thermostat will cut in again once the water tempera-
ture has dropped 10-15°C. If the thermostat continues to cut out, contact your local service
centre.
