20
|
Commissioning
Installer and user reference guide
75
FXUA50~100AVEB
VRV system air conditioner
4P673843-1 – 2022.01
NOTICE
Cooling operation mode
. Perform the test run in cooling operation mode so that
stop valves failing to open can be detected. Even if the user interface was set to
heating operation mode, the unit will run in cooling operation mode during 2‑3
minutes (although the user interface will display the heating icon), and then
automatically switch to heating operation mode.
20.3 Checklist before commissioning
1
After the installation of the unit, check the items listed below.
2
Close the unit.
3
Power up the unit.
You read the complete installation and operation instructions, as described in the
installer
and user reference guide
.
The
indoor unit
is properly mounted.
The
outdoor unit
is properly mounted.
Make sure
drain piping
is properly installed, 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.
20.4 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.
