Error Codes When Performing A Test Run; Disposal; Technical Data; Piping Diagram: Indoor Unit - Daikin FXFQ20BVEB Installation And Operation Manual

# Action
4 Press.
5 Stop the test run.
# Action
1 Press at least 4 seconds.
2 Select Test Operation.
3 Press.
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
Nothing displayed ▪ The wiring is disconnected or there is a
wiring error (between power supply and
(the currently set
outdoor unit, between outdoor unit and
temperature is not
indoor units, between indoor unit and
displayed)
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.
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
Connection
, Connector
Earth
Field wiring
Fuse
FXFQ20~125BVEB
VRV system air conditioner
4P540926-1B – 2019.01
Result
The home menu is
displayed.
Result
The Service Settings menu
is displayed.
Service Settings 1/3
Test Operation
Maintenance Contact
Field Settings
Demand
Min Setpoints Differential
Group Address
Return Setting
The unit returns to normal
operation, and the home
menu is displayed.
Possible cause
Protective earth
Protective earth (screw)
A
Rectifier
Relay connector
Short-circuit connector
Terminal
Error code
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

c
a
b
a Liquid pipe connection
b Gas pipe connection
c Heat exchanger
Indoor unit
INDOOR
Outdoor unit
OUTDOOR
Colors:
BLK Black
BLU Blue
BRN Brown
GRN Green
GRY Grey
Legends:
A*P
7 Disposal
Possible cause
Terminal strip
Wire clamp
ORG Orange
PNK Pink
PRP, PPL Purple
RED Red
WHT White
YLW Yellow
Printed circuit board
Installation and operation manual
11