7 Disposal
Installation and operation manual
11
FXFQ20~125BVEB
VRV system air conditioner
4P540926-1B – 2019.01
#
Action
Result
4
Press.
The home menu is
displayed.
5
Stop the test run.
#
Action
Result
1
Press at least 4 seconds.
The Service Settings menu
is displayed.
2
Select Test Operation.
Return
Setting
Service Settings 1/3
Test Operation
Maintenance Contact
Field Settings
Demand
Min Setpoints Differential
Group Address
3
Press.
The unit returns to normal
operation, and the home
menu is displayed.
6.3
Error codes when performing a
test run
If the installation of the outdoor unit has NOT been done correctly,
the following error codes may be displayed on the user interface:
Error code
Possible cause
Nothing displayed
(the currently set
temperature is not
displayed)
▪ The wiring is disconnected or there is a
wiring error (between power supply and
outdoor unit, between outdoor unit and
indoor units, between indoor unit and
user interface).
▪ The fuse on the outdoor or indoor unit
PCB has blown.
E3, E4 or L8
▪ The stop valves are closed.
▪ The air inlet or air outlet is blocked.
E7
There is a missing phase in case of three-
phase power supply units.
Note:
Operation will be impossible. Turn
OFF the power, recheck the wiring, and
switch two of the three electrical wires.
Error code
Possible cause
L4
The air inlet or air outlet is blocked.
U0
The stop valves are closed.
U2
▪ There is a voltage imbalance.
▪ There is a missing phase in case of
three-phase power supply units.
Note:
Operation will be impossible. Turn OFF
the power, recheck the wiring, and switch
two of the three electrical wires.
U4 or UF
The inter-unit branch wiring is not correct.
UA
The outdoor and indoor unit are
incompatible.
7
Disposal
NOTICE
Do NOT try to dismantle the system yourself: dismantling
of the system, treatment of the refrigerant, oil and other
parts MUST comply with applicable legislation. Units
MUST be treated at a specialised treatment facility for
reuse, recycling and recovery.
8
Technical data
▪ A
subset
of the latest technical data is available on the regional
Daikin website (publicly accessible).
▪ The
full set
of latest technical data is available on the Daikin
extranet (authentication required).
8.1
Piping diagram: Indoor unit
b
a
c
a
Liquid pipe connection
b
Gas pipe connection
c
Heat exchanger
8.2
Wiring diagram
8.2.1
Unified wiring diagram legend
For applied parts and numbering, refer to the wiring diagram on the
unit. Part numbering is by Arabic numbers in ascending order for
each part and is represented in the overview below symbol "*" in the
part code.
Symbols
:
Circuit breaker
Protective earth
Connection
Protective earth (screw)
,
Connector
A
Rectifier
Earth
Relay connector
Field wiring
Short-circuit connector
Fuse
Terminal
INDOOR
Indoor unit
Terminal strip
OUTDOOR
Outdoor unit
Wire clamp
Colors:
BLK
Black
ORG
Orange
BLU
Blue
PNK
Pink
BRN
Brown
PRP, PPL
Purple
GRN
Green
RED
Red
GRY
Grey
WHT
White
YLW
Yellow
Legends:
A*P
Printed circuit board
