Error Codes When Performing A Test Run - Daikin RZAG71N V1B Series Installer's Reference Manual

8 | Commissioning

8.5 Error codes when performing a test run

Installer reference guide
68
#
4 Press.
5 Stop the test run.
#
1 Press at least 4 seconds.
2 Select Test Operation.
3 Press.
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 currently set
temperature is not
displayed)
E3, E4 or L8
U1 or E7
L4
U0
U2
U4 or UF
UA
Action
The home menu is displayed.
Action
The Service Settings menu is
displayed.
Service Settings
Test Operation
Maintenance Contact
Field Settings
Demand
Min Setpoints Differential
Group Address
The unit returns to normal
operation, and the home menu
is displayed.
Possible cause
▪ 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 unit PCB has blown out.
▪ The stop valves are closed.
▪ The air inlet or air outlet is blocked.
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.
The air inlet or air outlet is blocked.
The stop valves are closed.
▪ 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.
The inter-unit branch wiring is not correct.
The outdoor and indoor unit are incompatible.
Result
Result
1/3
Return Setting
RZAG71~140N
Sky Air Alpha-series
4P695307-1A – 2024.02