Test Operation - Daikin VRV IV-S RXTQ-TAVJU Series Service Manual

SiUS331604E
1.3

Test Operation

To start smoothly, a crankcase heater is equipped to the unit. To power up the crankcase heater in advance, be
sure to turn on the power supply 6 hours before operation.
Warning
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, ensure that the indoor unit installation has been completed.
1. Powering on ~ test operation
Make sure to perform a test run first after installation (If the unit is operated with the indoor unit remote
controller but without performing a test operation, the error code U3 will be indicated on the display of 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 button switches (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.
• Turn on the power supply of the outdoor and indoor units.
Caution
To power up the crankcase heater in advance, be sure to turn on the power supply 6 hours before operation.
(2) • Remove the front panel of the outdoor unit.
• Check LED display of the outdoor unit PCB (A1P, A2P), to observe whether data transmission is normal.
Outdoor unit PCB
LED display
(Factory setting)
Caution
Don't touch the switches other than button switches and changeover switches of the PCB (A2P) during setting.
Failure to do so may result in electric shock.
(3) • If customer wishes to perform LOW NOISE operation or DEMAND operation, perform setting with the push
buttons (BS1 ~ 5) on outdoor unit PCB (A2P).
• Operate the push buttons from the opening of the insulating cover. (See Protective range of the "Service
Precautions" label for details)
Field Setting
A1P
SERVICE
READY /
MONITORING MODE
ABNORMAL
LAMP
HAP H1P
l h
A2P
C/H CHANGEOVER
IND MASTER
H2P H3P H4P
h k h
LED display

Test Operation

LOW NOISE DEMAND
SUB
H5P H6P
h h
h Light OFF k Light ON l Blinking
H7P
h
74