English
13
• During the operation, monitor the outdoor unit operation status and
check for any incorrect wiring.
<Precautions During Check Operation>
•
If operation is performed within 12 minutes of the indoor and
outdoor units being turned on, H2P will light up, and the com-
pressor will not run.
Only perform operation after checking that the LED display is as
shown in “
10-1 Power On–Check Operation
” 2. table.
• In order to ensure uniform refrigerant distribution, it may take up to
around 10 minutes for the compressor to start up after the unit
begins running. This is not a malfunction.
• Each indoor unit cannot be checked individually for problems.
After this operation is complete, run the unit normally using the
remote controller.
• The check run cannot be performed in recovery or other modes.
• If the outlet pipe thermistor (R2T), the intake pipe thermistor (R3T),
and the pressure sensors (S1NPH and S1NPL) are removed before
operation, the compressor might burn out, so avoid this under all cir-
cumstances.
10-2 Temperature control operation checklist
[Set the master unit (the indoor unit with rights of selection cooling
or heating)]
<With a wired remote controller>
• After check operation is complete, displays of all the connected
remote controllers will flash “Switching mode”.
• Ask the customer which indoor unit to set as the master unit.
(Setting the most frequently used indoor unit as the master unit is
recommended.)
• Press the mode-switch button on the remote controller for the mas-
ter unit.
• That remote controller will then become the remote controller for
switching between cooling and heating.
• All other remote controllers will display “Switching mode”.
<With wireless remote controller>
• After check operation is complete, the timer lamps on all the indoor
units which are connected will flash.
• Ask the customer which indoor unit to set as the master unit.
(Setting the most frequently used indoor unit as the parent unit is
recommended.)
• Press the mode-switch button on the remote controller for the mas-
ter unit.
A beeping sound will be emitted and the timer lamps on all the
indoor units will go off.
• That indoor unit will be the indoor unit which has the right to switch
between cooling and heating.
For details, see the operation manual which comes with the unit.
• After check operation is complete, checking the temperature control
using normal operation.
(Heating is not possible if the outdoor temperature is 75°F(24°C) or
higher. See the included operation manual.)
(1)Make sure the indoor and outdoor units are operating normally.
(If liquid compression by the compressor or other abnormal
noises can be heard, stop the unit immediately, heat the crank
case for a sufficient amount of time, and try again.)
(2)Run each indoor unit one at a time and make sure the corre-
sponding outdoor unit is also running.
(3)Check to see if cold (or hot) air is coming out of the indoor unit.
(4)Press the fan direction and fan strength buttons on the indoor
unit to see if they operate properly.
<Precautions during temperature control checks>
• For around 5 minutes after the compressor stops, the compressor
will not run even if the “operate/stop” button on the remote controller
is pressed.
• When the system operation is stopped by the remote controller, the
outdoor units may continue operating for further 1 minutes at maxi-
mum.
• Malfunction code “U3” is displayed if check operation is not per-
formed using the test run button the first time after installation. Per-
form the check operation in accordance with “
10-1 Power On–
Check Operation
”.
1. Close the outdoor unit’s front panel.
Turn the power
on for the outdoor
unit and the indoor unit.
2. • Open the outdoor unit’s front panel.
• Make sure the LED display on the outdoor unit’s PC board (A1P) is as
shown in the following chart.
LED display
(Default status
before delivery)
HAP
A1P
H1P
H2P
H3P
H4P
H5P
H6P
H7P
6. Close the front panel of the outdoor unit after check operation is complete.
Do not leave any stop valve closed
otherwise the compressor will fail.
Caution
Be sure to turn the power on at least
6 hours before operation in order to have
power running to the crank case heater.
To avoid the risk of electric shock, do not touch anything other than the
push-button switches on the PC board (A1P) when making settings.
Caution
LED display: OFF ON Blinking
Use caution to avoid electric shock while
working, since the outdoor unit is on.
• Only set the push-button switches (BS1-5)
after making sure the microcomputer OK
monitor is lit up.
• See the “Service Precautions” plate on the
front panel of the outdoor unit for details on
how to make the settings.
(Do not forget to write the settings down on
the “Service Precautions” plate.)
• The dip switch (DS1-1) does not need to be
set, so do not touch it.
Doing so may cause malfunction.
• If you have to leave the outdoor unit during check
operation, either switch with another worker or close the
front panel.
• The system operates for about 30 minutes (60 minutes at
maximum) and automatically stops the check operation.
• The system can start normal operation about
3 minutes
after the check operation if
the
remote controller does not display any error code.
The remote controller will show the test run
display during check operation.
3. • When the customer requests
quiet operation or demand
operation, make these settings
using the push-button switches
(BS1-5) on the outdoor unit’s
PC board (A1P).
• Operate the push-button
switches through the opening
after protecting it with an
insulation
cover.
(See the “Service Precautions”
plate for details.)
4. • Check that the liquid and gas-side
stop valves are open, and if
they are closed, open them.
5. Press the test run button (BS4) for
at least five seconds and perform
check
operation.
For details, see “How to perform
check operation” on the “Service
Precautions”
plate.
01_EN_3P591321-1B.fm 13 ページ ２０１９年１２月２４日 火曜日 午後５時１９分
