Valve Position Checks - Nibe HPAC S40 Installateurhandbuch

REVERSING VALVES
VALVE POSITIONS
The heating/cooling modes are controlled by four reversing valves, which, depending on the outdoor temperature
and need, switch between the different modes.
QN13
Heating
Passive cooling
Active cooling.
The above applies to powered systems.
The arrow and figure indicate in which position the valve is set.

VALVE POSITION CHECKS

3 1
1
3
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.
HPAC S40 | GB
QN15 QN14
QN13
lit
lit
not lit
1 3
3
1
QN16
A lit lamp indicates that
the valve is in its output
position, i.e.it is open in
the direction labelled 1.
QN15 QN14
lit lit
lit not lit
not lit not lit
QN16
lit
not lit
not lit
23