16.3 To start and stop forced cooling
3AMXF-A9, 3AMXF-A9, 3AMXM-N9
R32 Split series
4P600463-1F – 2022.05
3 After 5 to 10 minutes (after only 1 or 2 minutes in case of very low ambient
temperatures (<−10°C)), close the liquid stop valve with a hexagonal wrench.
4 Check on the manifold if the vacuum is reached.
5 After 2-3 minutes, close the gas stop valve and stop forced cooling.
b
c
a
d
e
d
a Gas stop valve
b Closing direction
c Hexagonal wrench
d Valve cap
e Liquid stop valve
1 Turn OFF the power, remove the service cover and the switch box cover and
the service PCB switch cover.
2 Set DIP switch SW5 and SW6 to OFF.
3 Set DIP switch SW2 to COOL.
1×
1
4 Reattach the service PCB switch cover.
5 Turn ON the outdoor unit.
6 Press the forced cooling operation switch SW1 to begin forced cooling.
7 Press the forced cooling operation switch SW1 to stop forced cooling.
1×
4
ON
OFF
SW5
SW6
A
1
2
1
2
4
2
3
3
2
1
4
COOL
HEAT
5
SW2
A
1
5
=
2
3
4
5
SW1
16
Disposal
|
2
1
4
3
2
1
3
6
7
Installer reference guide
71
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