Hand-Over To The User; Maintenance And Service; Overview: Maintenance And Service; Maintenance Safety Precautions - Daikin RZASG100M7V1B RZASG125M7V1B RZASG140M7V1B Installer's Reference Manual

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 unit PCB has
blown out.
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.
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.
NOTICE
▪ The reversed phase protection detector of this product
only functions when
Consequently reversed
performed during normal operation of the product.
▪ The reversed phase protection detector is designed to
stop the product in the event of an abnormality when
the product is started up.
▪ Replace 2 of the 3 phases (L1, L2, and L3) during
reverse-phase protection abnormality.
8

Hand-over to the user

Once the test run is finished and the unit operates properly, please
make sure the following is clear for the user:
▪ Make sure that the user has the printed documentation and ask
him/her to keep it for future reference. Inform the user that he can
find the complete documentation on the url as earlier described in
this manual.
▪ Explain the user how to properly operate the system and what to
do in case of problems.
▪ Show the user what to do in relation to maintaining the unit.
9

Maintenance and service

NOTICE
Maintenance must be done by an authorised installer or
service agent.
We recommend to do maintenance at least once a year.
However, applicable legislation might require shorter
maintenance intervals.
RZASG71~140M_V1+Y1
Sky Air Advance-series
4P486047-1 – 2017.04
Possible cause
the product starts up.
phase detection is not
8 Hand-over to the user
NOTICE
In Europe, the greenhouse gas emissions of the total
refrigerant charge in the system (expressed as tonnes
CO -equivalent) is used to determine the maintenance
2
intervals. Follow the applicable legislation.
Formula to calculate the greenhouse gas emissions:
GWP value of the refrigerant × Total refrigerant charge [in
kg] / 1000
9.1 Overview: Maintenance and
service
This chapter contains information about:
▪ The yearly maintenance of the outdoor unit
9.2

Maintenance safety precautions

DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
NOTICE: Risk of electrostatic discharge
Before performing any maintenance or service work, touch
a metal part of the unit in order to eliminate static electricity
and to protect the PCB.
9.2.1

To prevent electrical hazards

When performing service to inverter equipment:
1 Do not open the electrical component box cover for 10 minutes
after the power supply is turned off.
2 Measure the voltage between terminals on the terminal block
for power supply with a tester and confirm that the power supply
is shut off. In addition, measure points as shown in the figure
below, with a tester and confirm that the voltage of the capacitor
in the main circuit is less than 50 V DC.
V1
A1P
C+
C–
3 To prevent damaging the PCB, touch a non-coated metal part
to eliminate static electricity before pulling out or plugging in
connectors.
4 Pull out junction connectors for the fan motors in the outdoor
unit before starting service operation on the inverter equipment.
Be careful not to touch the live parts. (If a fan rotates due to
strong wind, it may store electricity in the capacitor or in the
main circuit and cause electric shock.)
Junction connectors
5 After the service is finished, plug the junction connector back in.
Otherwise the malfunction code E7 will be displayed and
normal operation will not be performed.
For details refer to the wiring diagram labelled on the back of the
service cover.
Y1
C+
C–
X106A for M1F
X107A for M2F
Installer reference guide
25