Daikin ARXM50N2V1B9, Installation Manual

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5 Commissioning
Installation manual
18
ARXM50~71+RXM42~71N2V1B(9) + RXP50~7
RXA42+50+RXF50+6 RXF7 RXJ50N2V1B
R32 split series
3P512025-6M – 2018.11
5 Commissioning
NOTICE
NEVER operate the unit without thermistors and/or
pressure sensors/switches. Burning of the compressor
might result.
5.1 Checklist before commissioning
After the installation of the unit, first check the following items. Once
all below checks are fulfilled, the unit MUST be closed, ONLY then
can the unit be powered up.
The indoor unit is properly mounted.
The outdoor unit is properly mounted.
The system is properly earthed and the earth terminals
are tightened.
The power supply voltage matches the voltage on the
identification label of the unit.
There are NO loose connections or damaged electrical
components in the switch box.
There are NO damaged components or squeezed
pipes on the inside of the indoor and outdoor units.
There are NO refrigerant leaks .
The refrigerant pipes (gas and liquid) are thermally
insulated.
The correct pipe size is installed and the pipes are
properly insulated.
The stop valves (gas and liquid) on the outdoor unit are
fully open.
The following field wiring has been carried out according
to this document and the applicable legislation between
the outdoor unit and the indoor unit.
Drainage
Make sure drainage flows smoothly.
Possible consequence: Condensate water might drip.
The indoor unit receives the signals of the user interface .
The specified wires are used for the interconnection
cable .
The fuses, circuit breakers, or locally installed protection
devices are installed according to this document, and
have NOT been bypassed.
5.2 Checklist during commissioning
To perform an air purge .
To perform a test run .
5.3 To perform a test run
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.
6 Troubleshooting
6.1 Fault diagnosis using LED on
outdoor unit PCB
LED is… Diagnosis
flashing Normal.
▪ Check the indoor unit.
ON ▪ Turn the power OFF and back ON, and
check the LED within approximately 3
minutes.
If the LED is ON again, the outdoor unit
PCB is faulty.
OFF 1 Supply voltage (for power saving).
2 Power supply fault.
3 Turn the power OFF and back ON, and
check the LED within approximately 3
minutes.
If the LED is ON again, the outdoor unit
PCB is faulty.
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.
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.