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11 Maintenance and service
10.3
To perform a test run
INFORMATION
If the unit runs into an error during commissioning, see the
service manual for the detailed troubleshooting guidelines.
Prerequisite: Power supply MUST be in the specified range.
Prerequisite: Test run may be performed in cooling or heating
mode.
Prerequisite: Test run should be performed in accordance with the
operation manual of the indoor unit to make sure that all functions
and parts are working properly.
1 In cooling mode, select the lowest programmable temperature.
In heating mode, select the highest programmable temperature.
Test run can be disabled if necessary.
2 When the test run is finished, set the temperature to a normal
level. In cooling mode: 26~28°C, in heating mode: 20~24°C.
3 The system stops operating 3 minutes after the unit is turned
OFF.
INFORMATION
▪ Even if the unit is turned OFF, it consumes electricity.
▪ When the power turns back on after a power break, the
previously selected mode will be resumed.
11
Maintenance and service
NOTICE
General maintenance/inspection checklist. Next to the
maintenance instructions in this chapter, a general
maintenance/inspection checklist is also available on the
Daikin Business Portal (authentication required).
The
general
maintenance/inspection
complementary to the instructions in this chapter and can
be used as a guideline and reporting template during
maintenance.
NOTICE
Maintenance MUST be done by an authorised installer or
service agent.
We recommend performing maintenance at least once a
year. However, applicable legislation might require shorter
maintenance intervals.
NOTICE
Applicable legislation on fluorinated greenhouse gases
requires that the refrigerant charge of the unit is indicated
both in weight and CO
2
Formula to calculate the quantity in CO
tonnes: GWP value of the refrigerant × total refrigerant
charge [in kg] / 1000
12
Troubleshooting
12.1
Fault diagnosis using LED on
outdoor unit PCB
LED is...
Diagnosis
flashing
Normal.
▪ Check the indoor unit.
Installation manual
12
checklist
equivalent.
equivalent
2
LED is...
Diagnosis
ON
▪ Turn the power OFF and back ON, and
OFF
1
2
3
DANGER: RISK OF ELECTROCUTION
▪ When the unit is NOT operating, the LEDs on the PCB
are turned OFF in order to save power.
▪ Even when the LEDs are OFF, the terminal block and
the PCB may be powered.
13
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.
INFORMATION
To protect the environment, make sure to perform an
automatic pump down operation when relocating or
dismantling the unit. For the pump down procedure, refer
is
to the service manual or the installer reference guide.
14
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
Business Portal (authentication required).
14.1
Wiring diagram
The wiring diagram is delivered with the unit, located inside of
the outdoor unit (bottom side of the top plate).
14.1.1
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 by "*" in the part
code.
Symbol Meaning
Circuit breaker
Connection
,
Connector
Earth
check the LED within approximately 3
minutes.
If the LED is ON again, the outdoor unit
PCB is faulty.
Supply voltage (for power saving).
Power supply fault.
Turn the power OFF and back ON, and
check the LED within approximately 3
minutes.
If the LED is OFF again, the outdoor unit
PCB is faulty.
Symbol Meaning
Protective earth
Protective earth (screw)
A
Rectifier
,
Relay connector
R32 split series
3P482320-17X – 2021.12
RXJ20~35A
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