I n s t a l l a t i o n a n d u s e r m a n u a l
HP1100/1500 COMPACT PREMIUM
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3.5
Security and control systems
In order to ensure long term reliability and fully automatic operations of the heat pump, the pump is
pump is equipped with following security systems:
Temperature based control of the heat pump operation:
The heat sensor placed on the heat exchanger, ensures switching off of the heat pump when
the requested water temperature is reached. The normal operating mode gets renewed if the
water temperature in the exchanger drops by 3 °C (manufacturing setting) below the
requested value.
Safety systems:
Water flow sensor (flow switch) placed on the water heat exchanger inlet.
The water flow sensor switches on the heat pump when there is water flowing through the
heat pump exchanger, and switches it off when the water flow stops or is too high or low.
Sensor of the minimal and maximal gas pressure in the refrigerant circuit.
Heat sensor on the refrigerant outlet from the compressor.
Time protection
The unit is equipped with a switching time delaying device with a preset 3 minutes delay
period for protecting the control elements in the circuit and eliminating repeated restarts and
contactor vibrations. This time delay will automatically restart the unit app. 3 minutes after
every single interruption of the heat pump operation. Even if there is only a short interruption
of the power supply, the time protection will get activated so the unit cannot start the
operation earlier than the pressures in the refrigerant circuit of the heat pump get balanced.
Interruption of the power supply during the pause time does not influence the time interval.
Antifreeze protection
If an ambient air temperature is low (e.g. below 7°C), it is normal to have ice creations on the
evaporator of your heat pump. This is freezing condensated water. Your heat pump is
equipped with automatic defrosting.
Manufacturer has preset the conditions when automatic defrosting gets activated in order to
ensure optimal operations and performance of the heat pump. For more information please
refer to section 5.7 Setting of the operating parameters and section 7.2 Defrosting.
If your heat pump freezes up on often basis it is advised to reconsider the efficiency of heat
pump running (heating) in such conditions.
If a failure occurs to any of above systems there will be an error message shown on the display
starting with ‘EE’. Please check
section
7.5
Failure reports of this Installation and user manual.
Warning:
Elimination or disabling from operation any of the control or security systems results in
warranty void.
