Daikin RWEYQ144PCTJ, Installation Manual

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18 English
〈
Cautions for check operation
〉
• If the system is started within about 12 minutes after the outside/
indoor units are turned ON, the compressor will not run and H2P
lights up. Before starting an operation, always verify that the LED dis-
play shows the contents of the table in
11-3 Check operation (6).
• The system may require up to 10 minutes until it can start the com-
pressor after an operation start. This is a normal operation to equal-
ize 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.
• Check operation is not possible in other modes such as collection mode.
• If the setting of indoor remote controller is changed before the check
operation, it may not be performed correctly and malfunction code
“UF” may be displayed.
Remote controller displays malfunction code
11-4 Check of normal operation
After the check operation is completed, operate the unit normally.
Check the below items.
• Make sure the indoor and outside units are operating normally (If a
knocking sound can be heard in the liquid compression of the com-
pressor, stop the unit immediately and then energize the heater for a
sufficient length of time before restarting the operation.)
• Run each indoor unit one at a time and make sure the corre-
sponding outside unit is also running.
• Check to see if cold (or hot) air is coming out of the indoor unit.
• Press the fan direction and fan strength buttons on the indoor unit
to check if they operate properly.
NOTE
〈
Cautions for normal operation check
〉
• Once stopped, the compressor will not restart in about 5 minutes
even if the
On/Off button of an indoor unit in the same system is
pressed.
• When the system operation is stopped by the remote controller, the out-
side units may continue operating for further 5 minutes at maximum.
• If the system has not undergone any check operation by the test
operation button since it was first installed, an malfunction code
“U3” is displayed. In this case, perform check operation referring
to
11-3 Check operation .
• After the test operation, when handing the unit over to the cus-
tomer, make sure the control box cover, the inspection door, and
the unit casing are all attached.
12. ONSITE SETTINGS
12-1 Energy saving and optimum operation
This VRV pump system is equipped with advanced energy saving func-
tionality. Depending on the priority, emphasizes can be put on energy
saving or comfort level. Several parameters can be selected, resulting in
the optimal balance between energy consumption and comfort for the
particular application.
[2-8]= Te target temperature during cooling operation
Default value=5
Change [2-8]=2-7 in function of required operation method dur-
ing cooling.
[2-9]= Tc target temperature during heating operation
Default value=3
Change [2-9]=1, 3 or 6 in function of required operation method
during heating.
Malfunc-
tion code
Installation error Remedial action
E3
E4
F3
F6
UF
U2
The stop valve of an out-
side unit is left closed.
Open the stop valve.
Check referring to the table in
9-9 Additional refrigerant
charge
.
U1
The phases of the power
supply to the outside
units are reversed. Exchange two of the three
phases (L1, L2, L3) to make a
positive phase connection.
U1
U2
U4
No power is supplied to an
outside, Branch Selector
or indoor unit (including
phase interruption).
Check if the power supply wiring for the
outside units are connected correctly.
(If the power supply wire is not con-
nected to L2 phase, no malfunction
display will appear and the com-
pressor will not work.)
Check if the ground fault circuit
interrupter in the outside unit is ON.
U7
UA
• A model which cannot be
connected in a multi-out-
side-unit system has
been connected in a
multi-outside-unit system.
• DIP switch setting of
Branch Selector unit is
incorrect.
• Combination with T
type (BSQ-TVJ, BS-
Q54TVJ) and P
type(BSVQ-PVJU,
BSV-Q36PVJU) cause
error.
• Change to individual piping, and
disconnect the wiring from the
multi-outside-unit terminals (Q1,
Q2).
• Set up a DIP switch referring to
service precautions of Branch
Selector unit.
• Configure the system with only T
type, or only P type.
UF
Incorrect transmission
between units
Check if the refrigerant piping
and the unit transmission wiring
are consistent with each other.
E3
F6
UF
U2
Refrigerant overcharge
Recalculate the required
amount of refrigerant from the
piping length and correct the
refrigerant charge level by
recovering any excessive refrig-
erant with a refrigerant recovery
machine.
E4
F3
Insufficient refrigerant
• Check if the additional refrig-
erant charge has been fin-
ished correctly.
• Recalculate the required
amount of refrigerant from the
piping length and add an ade-
quate amount of refrigerant.
U7
UF
If the multi-outside-unit termi-
nal is connected when there
is one outside unit installed. Remove the wiring from the
multi-outside-unit terminals (Q1,
Q2).
UF
E4
The operation mode on
the remote controller was
changed before the check
operation.
Set the operation mode on all
indoor unit remote controllers to
“cooling.”
HJ
The heat source water is
not circulating. Make sure that the water pump
is running.
U3
The check operation has
not been performed.
Perform the check operation.
E2
E3
E3 is activated, so On/Off but-
ton is pressed on the remote
controller, but this does not
turn E3 off. Or E2 is activated.
In case of above, there is a
malfunction of the compres-
sor in the outside unit.
Measure the insulation resis-
tance of the compressor to
check the condition of the com-
pressor.
Te setting (cooling operation)
k h h k h h h
2. 43°F (6°C)
k h h h h k h
3. 45°F (7°C)
k
h h h h
k k
4. 46°F (8°C)
k h h h k h h
5. 48°F (9°C)(default)
k
h h h
k
h
k ∗
6. 50°F (10°C)
k h h h k k h
7. 52°F (11°C)
k
h h h
k k k
Tc setting (heating operation)
k
h h
k
h h h
1. 106°F (41°C)
k h h h h h k
3. 109°F (43°C)(default)
k
h h h h
k k ∗
6. 115°F (46°C)
k h h h k k h
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