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Checking lists after finishing installation
Before supplying power, measure the power terminal (L, N) and outdoor unit grounding using insulation-resistance
tester.
- The measured value should be above 30MΩ.
You must not measure the communication terminal since the communication circuit may get damaged.
Check the short circuit using a circuit tester.
CAUTION
Outdoor unit
Installation
Indoor unit
Refrigerant pipe work
Installing the drain pipe
Wiring work
Setting ADDRESS
Option
50
Have you secured air discharge profile at the bottom of service cover?
Have you checked the external surface and the inside of the outdoor unit?
Is there any possibility of short circuit due to the heat of an outdoor unit?
Is the place well-ventilated and ensures space for service?
Is the outdoor unit fixed securely?
Have you checked the external surface and the inside of the indoor unit?
Is the place well-ventilated and has enough space been allowed for service?
Have you checked if the center of the indoor unit is ensured and it is installed
horizontally?
Have you selected correct pipes?
Are the liquid and gas valve open?
Is the total number of connecting indoor units within the allowable range?
Are the length and the height difference between the refrigerant pipes within
the allowable range?
Is the refrigerant Y-joint properly installed?
Has the connection of liquid and gas pipes been correctly performed?
Have you chosen correct insulation for pipes and have you insulated them
correctly?
Is the pipe or connection part properly insulated?
Is the quantity of the additional refrigerant correctly weighed in? (You must
record the amount of additional refrigerant charging on the service record paper
placed outside the outdoor unit.)
Have you checked whether the drain pipes of the indoor unit and outdoor unit
are connected together?
Have you completed the drain test?
Is the drain pipe properly insulated?
Are the power cable and communication cable tightened firmly on the terminal
board within the range of rated tightening torque?
Have you performed the earthing work 3 to the outdoor unit?
Is 2-core cable used for the communication cable?
Is the length of the wire is in the limited range?
Is the wiring route correct?
Are the ADDRESSES of the indoor and outdoor units properly set?
Are the ADDRESSES of the remote controller properly set?
(When using multiple remote controllers)
Have you checked whether the vibration-resistance frame is correctly installed if
there is a possible vibration of the outdoor unit.
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