Instruction manual

EU heat pumps

3.8 First time start-up

Note - In order for the unit to heat the pool (or spa), the filter pump must be running so that the water

can circulate through the heat pump. Without this circulation, the heat pump will not start.

When all connections have been made and checked, you should follow these steps:

1. Turn on the filter pump. Check for leaks and verify flow to and from the pool.

2. Turn on the electrical power supply to the unit, then press the ON/OFF key “ ” on the electronic control

panel. The unit should start when the time delay period has lapsed (see further).

3. When the unit has been running for a couple of minutes, check if the air leaving the unit is cooler.

4. Check the performance of the flow switch as follows: with the unit running, turn the filter pump off. The

unit should also switch off automatically. If not, the flow switch must be readjusted. (see further under 6.2).

5. Allow the unit and filter pump to run 24 hours a day until the desired pool water temperature is reached.

When the set temperature is reached, the unit switches itself off. The unit will now automatically restart (as

long as your filter pump is running) when the temperature of the pool water experiences a drop of more than

1 °C below the set temperature.

Depending on the starting temperature of the pool water and the air temperature, it can take several days for the

water to reach the desired temperature. Covering the pool can drastically reduce this period.

Water pressure switch – the unit is equipped with a pressure switch that is switched on when enough water

pressure is detected in the unit and that is switched off when the water pressure becomes too low (e.g. when the

filter pump is switched off). If the pool water level is located more than one meter above or below the heat

pump, your installer may need to adjust this pressure switch (see further under 6.2).

Time delay – the unit is equipped with a built-in 3-minute start delay included to protect electrical components

and contacts. After this time delay, the unit will automatically be restarted. Even a brief interruption of the

power supply will activate the start delay and prevent the unit from starting immediately. Additional

interruptions of the power supply during the delay period will have no effect on the 3-minute countdown.

3.9 Condensation

When the swimming pool water is being heated by the heat pump, the incoming air is cooled down quite a bit,

which can cause condensation on the fins of the evaporator. Condensed volumes can attain several litres per

hour under high atmospheric humidity. Sometimes, this is wrongfully interpreted as a water leak.