Before Operation Si39-303
192 Installation Manual
8.2 Test Run
Caution After completing installation, be sure to open the valve. (Operating the unit with the valve shut
will break the compressor.)
Power supply connection
When running the unit for the first time after installation, be sure to perform a test run following
these steps for test run. (Not performing a test run when the unit is first installed may prevent
the unit from operating properly.)
•
During the operation, monitor the outdoor unit operation status and check for any
incorrect wiring.
1.Electric box lid
2.Service lid
3.[Service precautions] Label location
<Cautions for check operation>
!
If the system is started within about 12 minutes after the outdoor/indoor units are turned ON,
the compressor will not run and H2P lights up. Before starting an operation, always verify
that the LED display shows the contents of the table in “8-2 Test run 2.”.
!
The system may require up to 10 minutes until it can start the compressor after an operation
start. This is a normal operation to equalize the refrigerant distribution.
!
The check operation does not provide any means of checking the indoor units individually.
For that purpose, perform normal operation using the remote controller after the check
operation.
1. Turn ON the power to the outdoor
units and indoor units.
3.
.
As necessary, configure the system
settings onsite by using the dipswitch
(DS1) on the outdoor unit P-board
(A1P) and push button switches
(BS1 to 5).
Always perform configuration after turning ON the
power. To learn the setting method, refer to the
[Service Precautions] label attached at the
position shown in the figure on the right
(Electric box lid in outdoor unit).
(Remember, the actual settings you have made
must be recorded on the [Service Precautions]
label.)
.
When the system is in the multiple-
outdoor unit configuration (Out Multi),
perform the configuration on the parent
unit. (Any settings made on a child unit
will be ignored.)
2. Check the LED on the P-board (A1P) in the outdoor unit to see if the data transmission
is performed normally.
Make sure to turn ON the power 6 hours before
starting the operation. This is necessary to warm
the crankcase preliminarily by the electric heater.
LED display
(Default status
before delivery)
One outdoor unit installed
When multiple
outdoor unit
installed (
∗
)
Master station
Sub station 1
Sub station 2
Microcomputer
operation
monitor
Page
HAP H1P H2P H3P H4P H5P H6P H7P H8P
Ready/
Error
Cooler/heater changeover
Individual
Bulk
(parent)
Bulk
(child)
Low
noise
Demand
Multi
LED display: OFF ON Blinking
(∗) The base (parent) unit is the outdoor unit to which the interconnecting wiring for the
indoor units is connected. The other outdoor units are child units.
4.
Check if the shutoff valves are in
appropriate status and correct any
wrong status. (Refer to the table in
“
6-6 Additional Refrigerant Charge
”.)
5. Perform the check operation
following the instructions printed
on the [Service Precaution] label.
Do not leave any shutoff valve closed.
Otherwise the compressor will fail.
The system operates for about 15 minutes
(30 minutes at maximum) and automatically
stops the test operation. The system can start a
normal operation about 15 minutes after the test
operation, only if the remote controller displays
no error codes.
Caution
1
2
3
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