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1) Indoor and outdoor units are properly installed;
2) Piping and wiring are correct;
3) No leakage from the refrigerant piping system;
4) Water discharge is smooth;
5) Insulation is complete;
6) Grounding line has been properly connected;
7) Piping length, and amount of refrigerant filled have been recorded;
8) The voltage of the power supply is the same as the rated voltage
of the air conditioner;
9) No obstacles at the air inlet and outlet of the indoor and outdoor
units;
10) Cut-off valves for the gas and liquid ends are opened;
11) Connect to the power supply to let the air conditioner warm up first.
Use wired/remote controller to control and operate the air conditioner
in the cooling mode. Check the following items according to the
manual. If there is any fault, troubleshoot by referring to the section
"Air Conditioner Errors and Causes" in the manual.
9.2.1 Indoor unit
1) Wired/remote controller switch is operating normally;
2) Function keys of the wired/remote controller are operating normally;
3) Room temperature regulation is normal;
4) LED indicator is on;
5) Key for manual operation is normal;
6) Water discharge is normal;
7) No vibration and strange sounds during operation;
9.2.2 Outdoor unit
1) No vibration and strange sounds during operation;
2) If the wind, noise and condensation affect the neighbours;
3) Any refrigerant leakage.
9.1 Things to Note Before Test Run
9.2 Test Run
Once the power is connected, when the unit is turned on or
started immediately after the unit is turned off, the air conditioner
has a protective function which delays the start of the
compressor by 3 minutes.
9. Test Run
Note
SW7_2
Unit with capacity less than 28kW
Unit with capacity equal or more than 28kW
Auto restart function enabled
Auto restart function disabled
J1
8.4 Error Codes and Definitions
Content
E0 Mode
conflict
E1
Communication error between indoor and outdoor units
E2
E3
E4
E6
E7
Eb
Ed
EE
Water level error
FE
Error
code
Indoor ambient temperature sensor (T1) error
Indoor heat exchanger mid-point temperature sensor
(T2) error
Indoor heat exchanger outlet temperature sensor
(T2B) error
Fan error
EEPROM error
Indoor EEV coil error
Outdoor unit error
Indoor unit has not been assigned an address
[ ]
0
SW7
[ ]
1
SW7
Reserved
SW7_1
[ ]
0
SW7
0/1 definition of each dial code switch:
means 0
means 1
All DIP switches (including the capacity DIP switch) have been
configured before delivery. Only a professional maintenance
personnel should change these settings.
Improper DIP switch settings may cause condensation, noise, or
unexpected system malfunction.
The default DIP switch setting is based on the actual unit.
Note
