8 Commissioning
Installation manual
42
RWEQ96~432TAYD
∗
+ RWEQ96~432TATJ
∗
VRV W T-Series water-cooled system air conditioner
Automatic lockout
When this setting is made, the auto-backup function will
automatically be activated. This will allow the auxiliary or secondary
heat source to be automatically activated in the event of a system
failure related to outside units.
Error codes capable of auto-backup are listed in the table below.
Please be aware that the error codes that are not listed do not auto-
backup in order to protect the unit.
Error code (Auto
backup possible)
Error contents
A3
Drain level control system abnormality
E3
Actuation of high pressure switch
E4
Actuation of low pressure sensor
E5
Inverter compressor motor lock
E9
Electronic expansion valve coil abnormality
F3
Discharge pipe temperature abnormality
F9
Branch Selector unit electronic expansion valve
abnormality
H9
Outside unit inside air thermistor (R1T) abnormality
HC
Water inlet thermistor (R9T) abnormality
Water outlet thermistor (R10T) abnormality
J3
Discharge pipe thermistor (R12T) abnormality
Compressor body thermistor (R13T) abnormality
J4
Plate heat exchanger gas thermistor (R4T)
abnormality
J5
Suction pipe thermistor (R3T) abnormality
J6
Plate heat exchanger liquid thermistor (R7T)
abnormality
J7
Receiver outlet liquid pipe thermistor (R6T)
abnormality
Subcooling heat exchanger outlet liquid pipe
thermistor (R8T) abnormality
Injection pipe thermistor (R11T) abnormality
J9
Subcooling heat exchanger outlet gas pipe
thermistor (R5T) abnormality
Exhaust heat cancellation heat exchanger gas
pipe thermistor (R2T) abnormality
JA
High pressure sensor abnormality
JC
Low pressure sensor abnormality
L1
Inverter PCB abnormality
L3
Reactor temperature rise abnormality
L4
Inverter radiation fin temperature rise abnormality
L5
Inverter compressor instantaneous overcurrent
L8
Inverter compressor overcurrent
L9
Inverter compressor startup abnormality
LC
Transmission error between inverter PCB and
outside unit main PCB
7 .2 .9
To connect the PC configurator to the
outside unit
X27A
a
b
c
2
3
4
5
H J
ST
X27A
A1P
a
PC
b
Cable (999482P3)
c
Outside unit main PCB
8
Commissioning
8 .1
Overview: Commissioning
After installation and once the field settings are defined, the installer
is obliged to verify correct operation. Therefore a test run must be
performed according to the procedures described below.
This chapter describes what you have to do and know to
commission the system after it is configured.
Commissioning typically consists of the following stages:
1 Checking the "Checklist before commissioning".
2 Performing a test run.
3 If necessary, correcting errors after abnormal completion of the
test run.
4 Operating the system.
8 .2
Precautions when commissioning
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
CAUTION
Do not perform the test operation while working on the
indoor units .
When performing the test operation, not only the outside
unit, but the connected indoor unit will operate as well.
Working on an indoor unit while performing a test operation
is dangerous.
CAUTION
Do not insert fingers, rods or other objects into the air inlet
or outlet. Do not remove the fan guard. When the fan is
rotating at high speed, it will cause injury.
INFORMATION
During the first running period of the unit, the required
power may be higher than stated on the nameplate of the
unit. This phenomenon is caused by the compressor, that
needs a continuous run time of 50 hours before reaching
smooth operation and stable power consumption.
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2020/07/29 16:16:51
