EMRQ8~16ABY1
Daikin Altherma outdoor unit
4P501819-1 – 2017.08
Installation manual
28
Correcting after abnormal completion of the test operation
The test operation is only completed if there is no malfunction code
displayed on the remote controller. In case of a displayed malfunction
code, perform the following actions to correct the abnormality:
■
Confirm the malfunction code on the remote controller
■
After correcting the abnormality, press the
BS3 RETURN
button
and reset the malfunction code.
■
Carry out the test operation again and confirm that the
abnormality is properly corrected.
■
Refer to the installation manual of the indoor unit for other
detailed codes.
15. O
PERATION
OF
THE
UNIT
Once the unit is installed and test operation of outdoor unit and
indoor units is finished, the operation of the unit can start.
For operating the indoor unit, the remote controller of the indoor unit
should be switched ON. Refer to the indoor unit operation manual for
more details.
16. M
AINTENANCE
AND
SERVICE
16.1. Maintenance introduction
In order to ensure optimal operation of the unit, a number of checks
and inspections should be carried out on the unit at regular intervals,
preferably yearly.
This maintenance shall be carried out by the installer or service
agent.
16.2. Service precautions
Installation error
Error code
Remedial action
The stop valve of an
outdoor unit is left
closed.
E3
E4
F3
F6
UF
Open the stop valve.
The phases of the
power to the outdoor
unit is reversed.
U1
Exchange two of the three phases
(L1, L2, L3) to make a positive
phase connection.
No power is supplied
to an outdoor or
indoor unit (including
phase interruption).
LC
U1
U4
Check if the power wiring for the
outdoor unit is connected correctly.
Incorrect
interconnections
between units.
UF
Check if the refrigerant piping and
the unit wiring are consistent with
each other.
Refrigerant
overcharge.
E3
F6
UF
Recalculate the required amount of
refrigerant from the piping length
and correct the refrigerant charge
level by recovering any excessive
refrigerant with a refrigerant
recovery machine.
Insufficient refrigerant.
E4
F3
Check if the additional refrigerant
charge has been finished correctly.
Recalculate the required amount of
refrigerant from the piping length
and add an adequate amount of
refrigerant.
In case the test
operation was
interrupted or the unit
was operating out of
the instructed
temperature range,
the initial refrigerant
detection has failed.
U3
In case the the test operation was
interrupted, perform the test
operation again.
Perform the test operation again
within the instructed temperature
range.
Test run is possible for ambient
temperatures between –20°C and
35°C.
DANGER: ELECTRICAL SHOCK
See
"2. General Safety precautions" on page 2
.
CAUTION
when performing service to inverter equipment
1
Do not open the electric 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 the 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.
3
To prevent damaging the PC-board, touch a non-
coated metal part to eliminate static electricity before
pulling out or plugging in connectors.
4
Pull out junction connectors X1A, X2A, X3A, X4A
(X3A and X4A of 16 are inside the electric
component box (2), refer to the wiring diagram) 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.)
5
After the service is finished, plug the junction
connecter back in. Otherwise the error code
E7
will be
displayed on the remote controller and normal
operation will not be performed.
For details refer to the wiring diagram labelled on the back
of the electric component box cover.
Pay attention to the fan.
It is dangerous to inspect the
unit while the fan is running. Be sure to turn off the main
switch and to remove the fuses from the control circuit
located in the outdoor unit.
NOTE
Play it safe!
For protection of the PCB, touch the switch box casing
by hand in order to eliminate static electricity from your
body before performing service.
A2P
A2P
A1P
A3P
TP1 TP2
4PEN501819-1.book Page 28 Wednesday, September 13, 2017 12:52 PM
