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Caution
•
The system can connect up to 64 indoor units (address 0~63) at the same
time. Each indoor unit can only have one address DIP switch in the
system. The addresses of any two indoor units in the same system cannot
be the same. Units that have the same address may malfunction.
7.3 DIP Switch Settings on Main Board
0/1 definition of each dial code switch:
means 0
SW1_1
SW1
Cooling mode temperature compensation is 0°C
[
]
0
SW1
Cooling mode temperature compensation is 2°C
[
]
1
SW1_2
EEV at position 96 (steps) in standby in heating mode
SW1
[
]
0
SW1
EEV at position 72 (steps) in standby in heating mode
[
]
1
SW2
SW2
Factory settings
[
]
00
SW3_1
SW3
Reserved
[
]
0
SW3
Clear indoor unit address
[
]
1
SW4
In heating mode when the set temperature has been
SW4
reached, the fan operates in a 4 minutes off / 1 minute on
[
]
00
repeating cycle
In heating mode when the set temperature has been
SW4
reached, the fan operates in an 8 minutes off / 1 minute on
[
]
01
repeating cycle
In heating mode when the set temperature has been
SW4
reached, the fan operates in a 12 minutes off / 1 minute on
[
]
10
repeating cycle
In heating mode when the set temperature has been
SW4
reached, the fan operates in a 16 minutes off / 1 minute on
[
]
11
repeating cycle
SW5
In heating mode fan does not run when indoor heat
SW5
exchanger mid-point temperature is 15°C or below
[
]
00
In heating mode fan does not run when indoor heat
SW5
[
]
exchanger mid-point temperature is 20°C or below
01
In heating mode fan does not run when indoor heat
SW5
exchanger mid-point temperature is 24°C or below
[
]
10
In heating mode fan does not run when indoor heat
SW5
exchanger mid-point temperature is 26°C or below
[
]
11
SW6
SW6
Heating mode temperature compensation is 6°C
[
]
00
SW6
Heating mode temperature compensation is 2°C
[
]
01
SW6
Heating mode temperature compensation is 4°C
[
]
10
Heating mode temperature compensation is 0°C (use follow
SW6
me function)
[
]
11
means 1
SW3_2: reserved
SW3
Reserved
[
]
0
SW7: reserved
J1
Auto restart function enabled
Auto restart function disabled
Note
•
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.
7.4 Error Codes and Definitions
Error
Content
code
E0
Mode conflict
E1
Communication error between indoor and outdoor units
E2
Indoor ambient temperature sensor (T1) error
E3
Indoor heat exchanger mid-point temperature sensor
(T2) error
E4
Indoor heat exchanger outlet temperature sensor
(T2B) error
E6
Fan error
E7
EEPROM error
Eb
Indoor EEV coil error
Ed
Outdoor unit error
EE
Water level error
FE
Indoor unit has not been assigned an address
8. Test Run
8.1 Things to Note Before Test Run
Indoor and outdoor units are properly installed;
Piping and wiring are correct;
No leakage from the refrigerant piping system;
Water discharge is smooth;
Insulation is complete;
Grounding line has been properly connected;
Piping length, and amount of refrigerant filled have been recorded;
The voltage of the power supply is the same as the rated voltage
of the air conditioner;
No obstacles at the air inlet and outlet of the indoor and outdoor
units;
Cut-off valves for the gas and liquid ends of the outdoor unit are
opened;
8.2. Test Run
When the wired/remote controller is used to set the cooling
operations of the air conditioner, check the following items one by
one. If there is a fault, troubleshoot according to the manual.
Function keys of the wired/remote controller are operating
normally;
Room temperature regulation is normal;
LED indicator is on;
Water discharge is normal;
No vibration and strange sounds during operation;
Note: 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.
12
V.2
V.1
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