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8 Finishing the outdoor unit installation
9 Reattach the switch box cover and the service cover.
8
Finishing the outdoor unit
installation
8.1
To finish the outdoor unit
installation
DANGER: RISK OF ELECTROCUTION
▪ Make sure that the system is earthed properly.
▪ Turn OFF the power supply before servicing.
▪ Install the switch box cover before turning ON the
power supply.
1 Insulate and fix the refrigerant piping and cables as follows:
d
c
a
e
b
f
g
a
Gas pipe
b
Gas pipe insulation
c
Interconnection cable
d
Field wiring (if applicable)
e
Liquid pipe
f
Liquid pipe insulation
g
Finishing tape
2 Install the service cover.
9
Configuration
9.1
About ECONO mode prohibition
setting
This setting disables the input control signal from the user interface.
Use this setting when you wish to block reception of input controls
(cooling/heating) from indoor unit user interfaces.
9.1.1
To turn ON ECONO mode prohibition
setting
Prerequisite: The main power supply MUST be turned off.
1 Remove the top plate of the outdoor unit (2 screws on sides)
2 Remove the electric box cover by sliding it. Be careful not to
bend the electric box hook.
3 Cut the jumper (J23).
Installation manual
14
a b
a
Top plate
b
Electric box cover
c
PCB jumpers
d
PCB
e
Electric box
4 Reinstall the electric box cover and the top plate in reverse
order and turn on the main power supply.
9.2
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.
9.2.1
To turn ON the night quiet mode
Prerequisite: The main power supply MUST be turned off.
1 Remove the top plate and the electric box cover of the outdoor
unit (see
"9.1.1 To turn ON ECONO mode prohibition
setting" [ 4 14])
2 Cut the jumper J6.
3 Reinstall the top plate and the electric box cover.
CAUTION
When reinstalling the electric box cover, be careful not to
pinch the fan motor lead wire.
9.3
About heat mode lock
Heat mode lock limits the unit to heat operation.
c d
e
2MXM40+50A
R32 Split series
3P600450-5L – 2021.12
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