4 Installation
Installation manual
14
3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
3P600450-1 – 2019.10
3
Turn on the main power supply.
4.6.3
About priority room function
INFORMATION
▪ The priority room function requires initial settings to be
made during the installation of the unit. Ask the
customer in which rooms he plans to use this function
and make the necessary settings during installation.
▪ The priority room setting is only applicable for an air
conditioner indoor unit and only one room can be set.
The indoor unit for which the priority room setting is applied takes
priority in the following cases:
▪
Operation mode priority:
If the priority room function is set on an
indoor unit, all other indoor units enter the standby mode.
▪
Priority during high-power operation:
If the indoor unit on which
the priority room function is set operates at high power, the other
indoor units will run with reduced capabilities.
▪
Quiet operation priority:
If the indoor unit on which the priority
room function is set to quiet operation, the outdoor unit will also
run quietly.
Ask the customer in which rooms he plans to use this function and
make the necessary settings during installation. Setting it in the
guest rooms is convenient.
To set the priority room function
1
Remove the switch cover on the service PCB.
2
Set the switch (SW4) for the indoor unit for which you want to
activate the priority room function to ON.
E
D
C
B
A
E
D
C
B
A
A
1
2
3
4
5
1×
SW4
OFF
ON
2
1
3
Reset the power.
4.6.4
About night quiet mode
The night quiet mode function makes the outdoor unit run more
quietly at nighttime. This will reduce the cooling capacity of the unit.
Explain Night quiet mode to the customer and confirm if customer
wants to use this mode.
To turn on the night quiet mode
1
Remove the switch cover on the service PCB.
2
1
A
1
2
3
4
5
2
1
SW6
2
OFF
ON
1×
1
2
Set the night quiet mode switch (SW6-1) to ON.
4.6.5
About heat mode lock
Heat mode lock limits the unit to heat operation.
To turn on heat mode lock
1
Remove the switch cover on the service PCB.
2
Set the heat mode lock switch (SW5-1) to ON.
4
3
2
1
4
3
2
1
A
1
2
3
4
5
SW5
2
OFF
ON
1×
1
4.6.6
About cool mode lock
Cool mode lock limits the unit to cool operation. Forced operation
remains possible in cool mode.
Specifications for the connector housing and pins: ST products,
housing VHR‑5N, pin SVH‑21T‑1,1
When cool mode lock is used in combination with the Hybrid for
Multi, these units will not operate by the heat pump.
To turn on cool mode lock
1
Short-circuit pins 3 and 5 of connector S15.
