Addresses shall be assigned to all indoor units.
Check for unset or duplicated addresses.
All the indoor units and outdoor units of the same refrigerant circuit can be
checked on the service tool.
Enter the set addresses in the check sheet.
Check whether or not the address setting is held by the service tool
after indoor/outdoor circuit breakers were turned OFF ON.
All the indoor units in the same refrigerant
circuit
shall enter the cooling
test run state.
The outdoor units corresponding to the operation capacity of
the indoor units shall operate. *See P01-05 described later.
Cooling
test run
All of the
indoor units
operation
(after 30 mins)
Automatic address setting
Address read
Address record
Address hold check
Outdoor unit circuit breaker ON
Indoor unit circuit breaker ON
Check lighting of PC board LED101 and 7-segment display.
Check whether or not indoor unit OPERATION and TIMER lamps flash alternately.
Address
setting/
check
The 7-segment display of all outdoor units of the same refrigerant
circuit
shall display
Between R-S AC400V (380-415V)
Between S-T AC400V (380-415V)
Between T-R AC400V (380-415V)
These shall be no abnormal sound or abnormal vibration.
The outdoor fan shall not make a moaning sound.
There shall be no discharge air leaking from the outdoor duct.
There shall be no pipe chattering sound or flute sound generated.
HPS : 2.7 MPa
LPS : 0.8 MPa
TH1 (TH2) : 87°C
TH4 : 17°C
TH21 : 27°C
TH22 : 11°C
TH24 : 13°C
Shall operate corresponding to the operation capacity of the indoor units.
Service tool used, output (CSV Excel)
Outdoor unit (master) push
button SW operation
<On service tool>
High pressure
Low pressure
Discharge pipe temperature (outdoor unit)
Suction pipe temperature (outdoor unit)
Subcool (defference between
inlet and outlet of SCHEX)
Inlet air temperature (indoor unit)
Heat exchange inlet temperature (indoor unit)
Heat exchange outlet temperature (indoor unit)
Compressor operation
Data output
1-2-2 Check Items After Power ON
01-04
Function setting Are the necessary functions set?
Outdoor unit PC
board push button
SW setting/check
[Note]
Cooling test run for each refrigerant circuit.
If multiple refrigerant circuits are test run at the same time, refrigerant circuit address setting errors cannot
be detected.
Judgment standard
Check
Check contentsProcedure
Power ON
TH6 - TH7 : 10°C or greater
Inlet air temperature and outlet air temperature difference shall be 10°C or
greater.
There shall be no abnormal sound or abnormal vibration.
There shall be no water leakage. There shall be no condensation on the drain,
cabinet, piping, and discharge port.
Shall operate according to the settings. (ON-OFF, set temperature change)
<Indoor unit service tool + actual measurement>
Outlet air temperature
Abnormal sound/abnormal vibration
Water leakage check
Remote controller operation
<Outdoor unit>
Outdoor PC board/7-segment display
Operation voltage
Abnormal sound/
abnormal vibration
[Note] Turn on all indoor units power in the same refrigerant circuit address.
When the system operates with the indoor units remaining no power, it is cause of malfunction.
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