8 Handover to the user
Installer reference guide
21
AZQS100~14 AZQS100~140B7Y1B
Split system air conditioners
4P3855291 – 2014.08
There are NO
loose connections
or damaged electrical
components in the switch box.
The
insulation resistance
of the compressor is OK.
There are NO
damaged components
or
squeezed
pipes
on the inside of the indoor and outdoor units.
There are NO
refrigerant leaks
.
The correct pipe size is installed and the
pipes
are
properly insulated.
The
stop valves
(gas and liquid) on the outdoor unit are
fully open.
7.4
To perform a test run
NOTICE
Do not interrupt the test run.
INFORMATION
In case you have to redo the test run, see the service
manual.
1
Perform introductory steps.
#
Action
1
Open the liquid stop valve (A) and gas stop valve (B)
by removing the stem cap and turning
counterclockwise with a hex wrench until it stops.
A
B
2
Close the service cover to prevent electric shocks.
3
Turn ON power for at least 6 hours before starting
operation to protect the compressor.
4
On the user interface, set the unit to cooling operation
mode.
2
On the user interface, turn ON the unit.
Result:
The test run starts automatically. During the test run,
the H2P test LED is ON. When the test run is done, the LED
turns OFF.
7.5
Error codes when performing a
test run
If the installation of the outdoor unit has NOT been done correctly,
the following error codes may be displayed on the user interface:
Error code
Possible cause
Nothing displayed
(the currently set
temperature is not
displayed)
▪ The wiring is disconnected or there is a
wiring error (between power supply and
outdoor unit, between outdoor unit and
indoor units, between indoor unit and
user interface).
▪ The fuse on the outdoor unit PCB has
blown out.
E3, E4 or L8
▪ The stop valves are closed.
▪ The air inlet or air outlet is blocked.
Error code
Possible cause
E7
There is a missing phase in case of three
phase power supply units.
Note:
Operation will be impossible. Turn
OFF the power, recheck the wiring, and
switch two of the three electrical wires.
L4
The air inlet or air outlet is blocked.
U0
The stop valves are closed.
U2
▪ There is a voltage imbalance.
▪ There is a missing phase in case of
threephase power supply units.
Note:
Operation will be impossible. Turn OFF
the power, recheck the wiring, and switch
two of the three electrical wires.
U4 or UF
The interunit branch wiring is not correct.
UA
The outdoor and indoor unit are
incompatible.
NOTICE
▪ The reversed phase protection detector of this product
only
functions
when
the
product
starts
up.
Consequently reversed phase detection is not
performed during normal operation of the product.
▪ The reversed phase protection detector is designed to
stop the product in the event of an abnormality when
the product is started up.
▪ Replace two of the three phases (L1, L2, and L3)
during reversephase protection abnormality.
8
Handover to the user
Once the test run is finished and the unit operates properly, please
make sure the following is clear for the user:
▪ Make sure that the user has the printed documentation and ask
him/her to keep it for future reference. Inform the user that he can
find the complete documentation on the url as earlier described in
this manual.
▪ Explain the user how to properly operate the system and what he/
she has to do in case of problems.
▪ Show the user what he/she has to do in relation to maintaining the
unit.
9
Maintenance and service
NOTICE
Maintenance should preferably be carried out yearly by an
installer or service agent.
9.1
Overview: Maintenance and
service
This chapter contains information about:
▪ The yearly maintenance of the outdoor unit
