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You have read the complete installation and operation
instructions described in the installer and user reference
guide.
The indoor unit is properly mounted.
The outdoor unit is properly mounted.
The drain piping is properly installed and insulated, and
drainage flows smoothly. Check for water leaks.
Possible consequence: condensate water might drip.
The refrigerant pipes (gas and liquid) are installed
correctly and thermally insulated.
There are NO refrigerant leaks.
There are NO missing phases or reversed phases.
The system is properly earthed and the earth terminals
are tightened.
The fuses or locally installed protection devices are
installed according to this document, and have NOT been
bypassed.
The power supply voltage matches the voltage on the
identification label of the unit.
There are NO loose connections or damaged electrical
components in the switch box.
There are NO damaged components or squeezed
pipes on the inside of the indoor and outdoor units.
The stop valves (gas and liquid) on the outdoor unit are
fully open.
16.2
To perform a test run
INFORMATION
▪ Perform the test run according to the instructions in the
outdoor unit manual.
▪ The test run is only completed if there is no malfunction
code displayed on the user interface or the outdoor unit
7‑segment display.
▪ See the service manual for the complete list of error
codes and a detailed troubleshooting guideline for each
error.
NOTICE
Do NOT interrupt the test run.
17
Configuration
17.1
Field setting
Make the following field settings so that they correspond with the
actual installation setup and with the needs of the user:
(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
(2)
Fan speed:
• LL: Low fan speed (set during thermostat OFF)
• L: Low fan speed (set by the user interface)
• Setup volume: The fan speed corresponds to the speed the user has set (low, medium, high) using the fan speed button on the user
interface.
• Monitoring 1, 2: The fan is OFF, but runs for a short time every 6 minutes to detect the room temperature by LL (Monitoring 1) or by L
(Monitoring 2).
FXHA-A
VRV system air conditioner
3P668115-5E – 2022.11
▪ Ceiling height
▪ Air volume when thermostat control is OFF
▪ Time to clean air filter
▪ Thermostat sensor selection
▪ Thermostat differential changeover (if remote sensor is used)
▪ Automatic changeover differential
▪ Auto-restart after power failure
▪ T1/T2 input setting
INFORMATION
▪ The connection of optional accessories to the indoor
unit might cause changes to some field settings. For
more information, see the installation manual of the
optional accessory.
▪ Following setting are only applicable when using the
BRC1H52* user interface. When using any other user
interface, see the installation manual or service manual
of the user interface.
Setting: Ceiling height
This setting must correspond with the actual distance to the floor and
the capacity class.
If the distance to the floor is (m)
FXHA32~63
FXHA100
≤2.7
≤3.8
2.7<x≤3.5
3.8<x≤4.3
Setting: Air volume when thermostat control is OFF
This setting must correspond with the needs of the user. It
determines the fan speed of the indoor unit during thermostat OFF
condition.
1 If you have set the fan to operate, set the air volume speed:
If you want...
(2)
During thermostat
LL
OFF at cooling
Setup volume
operation
(a)
OFF
Monitoring 1
Monitoring 2
(2)
During thermostat
LL
OFF at heating
Setup volume
operation
(a)
OFF
Monitoring 1
Monitoring 2
(a)
Only use in combination with optional remote sensor or when
setting M 10 (20), SW 2, — 03 is used.
Setting: Time to clean air filter
This setting must correspond with the air contamination in the room.
It determines the interval at which "Time to clean filter" notification
is displayed on the user interface.
17 Configuration
(1)
Then
M
SW
—
13 (23)
0
01
02
(1)
Then
M
SW
—
12 (22)
6
01
(2)
02
03
(2)
04
(2)
05
12 (22)
3
01
(2)
02
03
(2)
04
(2)
05
Installation and operation manual
23
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