Technical data
7.1.3
48
7.1.3 Controller board
The current operating state of the heat pump can be read by the
individual LEDs on the controller board. The LEDs indicate the
following states of the heat pump:
Fig. 7.3: Air-to-water heat pump controller board
1) On = Compressor running
2) On = Ventilator running
3) Off = Heat pump in "Heating" mode
On = Heat pump in "Cooling" mode
or in "Defrosting" mode
4) On = Heat circulating pump running
5) Off = No request to the 2nd heat generator
(Heating element)
6) On = Antifreeze request, the heat pump is heating
7) On = Heat source without fault
Off = Heat source fault, low-pressure switch active
8) Off = Defrosting in progress or if 2) On in heating mode
Off = Defrosting completed or if 2) On in cooling mode
9) Not used
10) Not used
11) Flashes during operation
12) Flashes in the case of a fault
7.2 Regulation and display with brine-to-water heat pumps
7.2.1 Controls on the heat pump
The brine-to-water heat pumps installed inside are equipped with
a control panel with additional pressure or temperature displays
as shown in figure 7.3. All functions of the heat pump are
controlled with the controls. Switch 1 switches the heat pump to
operational readiness or to the "Standby" operation. In readiness
operation, the heat circulating pump pump is set to continuous
operation.
Switch 3 of the remote controller is used to switch between the
two operating modes "Heating" and "Cooling". The heat pump
responds to a change of the operating mode with a delay of
approx. 10 min. to prevent direct switching from heating to
cooling operation.
The return set temperature of the heating water can be set with
setpoint regulator 4.
Fig. 7.4: Integrated control panel of brine-to-water heat pumps
1) Switch ON/Standby
2) Switch heating/cooling
3) Indicator (illuminates if HP voltage is on)
4) Setpoint potentiometer (return)
5) Pressure indicator for brine circuit
6) Pressure indicator for heating circuit
7) Temperature indicator for heating circuit
7.2.2 Controller board
The current operating state of the heat pump can be read by the
individual LEDs on the controller board. The LEDs indicate the
following states of the heat pump:
Fig. 7.5: Brine-to-water heat pump controller board