Nibe HPAC 40 Manual De Instalación página 18

GB
Reversing valves
Valve positions
The heating/cooling modes are controlled by 4 reversing valves, which, depending on the outdoor temperature,
switch between the different modes.
Heating
Passive cooling
Active cooling.
The above applies to powered systems.
The arrow indicates in which position the valve is set.
Valve position checks
There are signs at the sides of the valves where it can
be checked that the valve outlets point in the directions
described above.
Caution
When changing the heating/cooling mode,
there is a delay of approximately 60 seconds
before the valves change their positions.
18
QN13 QN15
lit lit
lit lit
not lit not lit
QN14 QN16
lit lit
not lit not lit
not lit not lit