Test Operation (4/5/10/12 HP Models) SiAF332111E
162 Part 5 Field Settings and Test Operation
5.3 Test Operation (4/5 HP Models)
To start smoothly, a crankcase heater is equipped to the 5 HP unit only & to power up the
crankcase heater in advance, be sure to turn on the power supply 6 hours before operation.
Crankcase heater is not provided for 4 HP unit. So, there is no need to turn on the power supply
6 hours before operation.
Be sure to inform other installers or attach the front panel well before leaving with the power
supply turned on for the outdoor unit.
Before powering ON
Protect the electronic components with insulating tape in accordance with the Service
Precautions label attached to the front panel.
All indoor units connected with the outdoor unit will operate automatically after powering on.
To ensure safety, check the indoor unit installation has been completed.
Powering On to Test Operation
Make sure to perform a test operation first after installation (If the unit is operated with the
indoor unit’s remote controller without performing a test operation, the error code U3 will be
displayed on the remote controller and the unit will not operate normally).
After turning on the power supply, do not touch any switches excluding button switches and
changeover switches when setting the outdoor unit PCB (A2P).
(For positions of the BS buttons (BS1~5) and changeover switches (DS1-1, 2) on the PCB,
refer to the Service Precautions label)
Check the state of the outdoor units and fault wiring with this operation.
(1) Attach the front panel of the outdoor unit.
(2) Turn on the power supply of the outdoor and indoor units.
(3) Remove the front panel of the outdoor unit.
(4) Check LED display of the outdoor unit’s PCB (A1P, A2P), to observe whether data
transmission is normal.
LED display: h Light OFF k Light ON l Blinking
(5) If customer wishes to perform LOW NOISE operation or DEMAND operation, perform setting
with the BS buttons (BS1~5) on outdoor unit’s PCB (A2P).
(6) Operate the BS buttons from the opening of the insulating cover. (See Protective range of
the Service Precautions label for details)
Only for 5 HP, to power up the crankcase heater in advance, be sure to turn on the power
supply 6 hours before operation.
Caution
A1P A2P
LED
display
(Factory
setting)
SERVICE
MONITORING
LAMP
MODE
READY /
ABNORMAL
C/H CHANGEOVER
LOW
NOISE
DEMAND
IND MASTER SUB
HAP H1P H2P H3P H4P H5P H6P H7P
l hhkhhhh
Don't touch the switches other than BS buttons and changeover switches of the PCB (A2P)
during setting. Doing so may result in electric shock.
Caution
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