Installation manual
13
RZQ71~12 RZQ100~140B7W1B
Split System air conditioners
4PW21412-1A
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 shut-off 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
Press the inspection/test operation button of the remote
controller 4 times (2 times in case of a wireless remote
controller) to go into the test run mode.
6
Press the ON/OFF button within 10 seconds to start the test run
and check the operation status for about 6 minutes. The
refrigerant pressure may not rise immediately, even if the shut-
off valve is opened after an air purge is performed using a
vacuum pump. This is because the indoor unit refrigerant piping
is closed off with electric valves inside. This will not create any
problems during operation.
7
Push the air flow direction adjust button and check if the unit is
responding to the new air flow direction position.
8
Press the inspection/test operation button of the remote
controller 2 times to go into check mode and to make sure that
the malfunction code displays “
00
” (=normal). In case the
malfunction code does not display “
00
”, refer to
"Failure
diagnosis at the moment of first installation" on page 13
.
9
If the inspection/test operation button is pressed 4 times during
a test run, the unit returns to normal operation.
10
Check all functions according to the operation manual.
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
"Failure diagnosis at the moment of first
installation" on page 13
.
3
In case you cannot operate the unit in test run mode, the unit
usually returns to its normal state after 30 minutes.
4
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.
5
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.
6
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.
Failure diagnosis at the moment of first installation
In case nothing is displayed on the remote controller (the current 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 remote controller shows L8 as an error code, there is a
possibility that either the shut-off valve is closed, or the outlet
vent is closed.
■
If the error code U2 is displayed on the remote controller, check
for voltage imbalance.
■
If the error code U4 or UF is displayed on the remote controller,
check the inter-unit branch wiring connection.
■
This unit is internally equipped with a reverse phase protection
detector which works as soon as the unit starts up. This function
continuously checks for possible reversed phases, loose phases
and for power supply interruptions while the unit is operating.
-
Running the unit in reversed phase may damage the
compressor and other components.
-
Introducing power with a missing phase or with a
mistaken N-phase will damage the equipment.
-
Always fasten the power wire securely.
■
For a missing phase in case of W1 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.)
D
ISPOSAL
REQUIREMENTS
Dismantling of the unit, treatment of the refrigerant, oil and any other
parts should be done in accordance with the relevant local and
national regulations.
Opening direction
A
Liquid side
B
Gas side
Remove the cap and turn
counterclockwise with a
hex wrench until it stops
A
B
