13
7.5.3 Operating programmes
1.
Water heating only with the compressor (the 'P1' programme must be
selected):
The device heats the water with the compressor until the set
temperature is reached and as long as the air temperature remains above the
minimum operating temperature (5° C). When the ambient temperature drops
below the set temperature, the compressor switches off for safety reasons. Once
the air temperature rises above the minimum operating temperature again (or after
30 minutes), the regulator turns on the compressor and water heating starts again.
In the 'P1' programme, water heating is carried out with the compressor. Water
heating starts again as soon as the water temperature drops by 5° C.
2. Water heating only with the electric heater (the 'P3' programme, only WPA
302 E-LF):
The electric heater is switched on until the set water temperature is
reached. The displayed temperature is not correct if the electric heater is installed
on top of the heat pump because the sensor is located below the electric heater.
The electric heater turns on and off on the basis of its own working and safety
thermostat (the set temperature is 65° C).
3. Water heating with the compressor and the automatic switching to the
backup heating source in case of undercooling of the air (the 'P5' programme
only):
The heat pump operates completely automatically with the priority of the
compressor operation until the set temperature is reached and as long as the air
temperature is above the switching-off level (L1). When the air temperature drops
below the switching-off level, the device automatically switches to heating with the
backup heating source (to the electric heater in the 'P5' programme). When the
backup heat source is active, it is indicated by blinking of the sign ☼ on the display.
As soon as the air warms up again and the temperature rises above the switch-off
level (or at least after 30 minutes), the regulator switches to heating with the
compressor.
7.5.4 Paramter display
To enter the parameter display menu, press the + and – keys simultaneously then
use these keys to scroll between the functions in the menu.
After selecting the parameter, wait for 8 seconds and the selected value of the
related parameter is shown for 10 seconds. After 10 seconds, the main menu is
displayed again, showing the current temperature of water in the hot water tank.
Parameter
Description
Scale
Factory setting
L0
Display of ambient
temperature
-9 - 95
L1
Air temperature at which
compresor is switched off
(in °C). Only P4 and P5
5 - 30°C
7
L2
Time interval for water
overheating (in days @
1 - 99 days
14
