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Configuration
Installer and user reference guide
74
FXZA15~50A2VEB
VRV system air conditioner
4P599623-1A – 2020.06
Setting: Thermostat sensor selection
This setting must correspond with how/if the remote controller thermostat sensor
is used.
When the remote controller thermostat sensor
is…
Then
(1)
M
SW
—
Used in combination with indoor unit thermistor
10 (20)
2
01
Not used (indoor unit thermistor only)
02
Used exclusively
03
Setting: Thermostat differential changeover (if remote sensor is used)
If the system contains a remote sensor, set the increase/decrease increments.
If you want to change increments to…
Then
(1)
M
SW
—
1°C
12 (22)
2
01
0.5°C
02
Setting: Differential for automatic changeover
Set temperature difference between cooling setpoint and heating setpoint in
automatic mode (availability depends on the system type). Differential is cooling
setpoint minus heating setpoint.
If you want to set…
Then
(1)
Example
M
SW
—
0°C
12 (22)
4
01
cooling 24°C/heating 24°C
1°C
02
cooling 24°C/heating 23°C
2°C
03
cooling 24°C/heating 22°C
3°C
04
cooling 24°C/heating 21°C
4°C
05
cooling 24°C/heating 20°C
5°C
06
cooling 24°C/heating 19°C
6°C
07
cooling 24°C/heating 18°C
7°C
08
cooling 24°C/heating 17°C
Setting: Auto-restart after power failure
Depending on the needs of the user, you may disable/enable the automatic restart
after a power failure.
If you want auto-restart after power failure…
Then
(1)
M
SW
—
Disabled
12 (22)
5
01
Enabled
02
(1)
Field settings are defined as follows:
•
M
: Mode number –
First number
: for group of units –
Number between brackets
: for individual unit
•
SW
: Setting number
•
—: Value number
•
: Default