Installation manual
15
AZQS100~1Y1B
Split system air conditioners
4P332194-1B – 2015.01
15.2. Test run
1
Be sure to turn power on at least 6 hours before starting
operation in order to protect the compressor.
2
Make sure the liquid and gas stop valves are open.
3
Be sure to close the frontside panel before operation, as not
doing so can cause electric shock.
4
Be sure to set the unit to cooling operation mode.
5
Turn the unit on by means of the remote controller.
The test run will start automatically from the first moment the unit
receives the “ON” signal from the remote controller.
6
During the test run the H2P TEST LED will be ON.
7
When the H2P TEST LED is OFF, it marks the finishing of the
test run.
15.3. Precautions regarding test-runs
1
In order to detect stop valves failing to open, operation of the
unit is compulsorily performed in cooling for 2-3 minutes during
the first test run, even if the remote controller was set to heating
operation. In this case, the remote controller will have kept
displaying the heating symbol all the time and the unit will switch
to heating operation automatically after elapse of that time.
2
In case you cannot operate the unit in test run mode for any
unusual reason, refer to
"15.4. Failure diagnosis at the moment
of first installation" on page 15
.
3
In case of a wireless remote controller, execute the test run only
after having installed the indoor unit decoration panel with infra-
red receiver first.
4
In case the panels of indoor units are not yet installed to the
indoor units, make sure to shut off the power supply after
finishing the complete test run.
5
A complete test run surely includes shutting off power after
having performed a normal operation stop on the remote
controller. Do not stop operation by turning circuit breakers off.
15.4. Failure diagnosis at the moment of first
installation
If the malfunction code "
UA
" is displayed on the remote
controller, there is a possibility that connection is with
incompatible indoor unit.
In case nothing is displayed on the remote controller (the
currently set temperature does not display), check for any of the
following abnormalities before you can diagnose possible
malfunction codes.
Disconnection or wiring error (between power supply and
outdoor unit, between outdoor unit and indoor units, between
indoor unit and remote controller).
The fuse on the outdoor unit PCB may have run out.
If the malfunction code "
E3
", "
E4
", "
L8
" or "
U0
" is displayed on the
remote controller, there is a possibility that the stop valves are
closed.
If the malfunction code "
E3
", "
E4
", "
L4
" or "
L8
" is displayed on the
remote controller, there is a possibility that air inlet or air outlet
are blocked.
If the malfunction code "
U2
" is displayed on the remote
controller, check for voltage imbalance.
If the malfunction code "
U4
" or "
UF
" is displayed on the remote
controller, check the inter-unit branch wiring connection.
The reversed phase protection detector of this product only
works during the initialisation stage after a power reset.
The reversed phase protection detector is designed to stop the
product in case of an abnormality when the product is started
up.
When the reversed phase protection circuit forced the unit to
stop, check if all phases are existing. If this is the case, shut
off the power supply to the unit and replace two of three
phases. Turn on power again and start the unit.
Reversed phase detection is not performed while the product
is operating.
In case of possible reversal of phases after a momentary
black out of power and the power goes on and off while the
product is operating, install a reversed phase protection
circuit on site. Such situation is not unimaginable when using
generators. Running the product in reversed phase can
break the compressor and other parts.
For a missing phase in case of Y1 units, "
E7
" or "
U2
" will be
displayed on the remote controller of the indoor unit.
Operation will be impossible with either one of these
phenomena. If this happens, turn off the power, re-check the
wiring and switch the position of two of the three electrical wires.
(If operation is not possible, do not under any circumstances
force the electromagnetic contactor on.)
CAUTION
Do NOT interrupt the test run!
CAUTION
Do NOT interrupt the test run!
INFORMATION
In case the test run needs to be redone, refer to the service
manual.
A
B
Opening direction
A
Liquid side
B
Gas side
Remove the cap and turn
counterclockwise with a
hex wrench until it stops
