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Set the Heat Pump in heating mode, wait for the indicated pressure to stabilize; the correct
setting of the pressure is between 21 - 35 kg/cm2;
In most cases (where filtration pump provides a flow rate up to 9m3/h) you do not have to
open the by pass valve.
If the stabilized pressure is under 21kg/cm2, the progressive opening of the by-pass valve
will allow this pressure to increase.
When the adjustment/calibration of the by-pass valve is complete, you should not have to
further adjust it once set.
7. Problematic Environmental Conditions
Under certain conditions the heat exchanges between the refrigerant and the water and
between the fluid and the air is insufficient. The consequence is that the refrigerating
circuit runs at a higher than normal pressure and the compressor consumes more
electricity.
The temperature sensors’ compressor outlet and the magnetic circuit breaker on the
compressor power supply, protect the compressor from these extreme conditions.
When this occurs the error message EE 05 is displayed.
The conditions causing this situation is as follows:
In heating mode:
• Insufficient water flow: close the by-pass valve to increase the refrigerant
exchange
water.
In cooling mode:
• Excess water flow: open the by pass valve to decrease the water flow and so the
exchange water
refrigerant.
• Insufficient air flow: be sure that the net of the condenser is not blocked.
Note: these error codes are likely to occur if temperature of the swimming pool water is
high and the temperature is hot.
8. Maintenance and Inspection
8.1 Maintenance
• Check the water inlet and drainage often.
The water and air inflow into the system should be sufficient so that its performance and
reliability does not get compromised.
You should clean the pool filter regularly to avoid damage to the unit caused by
clogging of the filter.
• The area around the unit should be spacious and well ventilated. Clean the sides of the
heat pump regularly to maintain good heat exchange to save energy.
• Check if all aspects of the unit are operational and pay special attention to the
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