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5-3 Parameter check instructions
1) Historical error code query
1. Press 'CHECK_A' or 'CHECK_B' button to item 60, this is the recent
error code:
2. Long press 'COOL' button for 3s, enter historical fault query.
Press 'CHECK_A' or 'CHECK_B' to switch the fault number, 'N1.'
indicates the second to last fault; 'N2.' indicates the third last fault, and so
on. 'N63.' is the last fault, up to 64 historical faults can be stored, and
historical faults can be saved even after power failure.
After entering the fault record query, if without any operation within 20s, it
automatically returns back to the frequency display or standby display.
2) Parameter setting at project site
1. In normal display state, long press 'COOL' button for 3s, enter
parameter setting function:SHx is displayed ('x' means number), short
press 'COOL' button to switch the parameter items, such as from SH1->
SH2-> SH3...
2. Each parameter item can be changed by pressing 'CHECK_A' or
'CHECK_B' button. After setting parameter, there is no operation within
10s, the setting will be saved automatically. After 20s without any
operations, it will automatically return to the frequency display or standby
display.
SH1: Cooling T2B target value A (unit: ° C, range: 5-15), the factory
default is 8 ° C;
SH2: Heating T2 target value B (unit: ° C, range: 40-50), the factory
default is 44 ° C;
SH3: Power saving mode value C (range: 40-100), it means that the
outdoor unit can output 40%, 50%, 60%, 70%, 80%, 90%, 100%, and the
factory default is 100%;
SH4: Auto charging refrigerant function (range: 0&1), the factory
default is 0, there is no auto charging refrigerant function, SV10 valve is
always closed. '1' means there is auto charging refrigerant function, SV10
valve can be turned on or off according to the relevant date judgment.
This parameter will turn to '0' if powered off, that means no power off
memory function.
SH5: The Longest defrosting period (unit: min, range: 5-20), the factory
default is 10 minutes.
SH6: Exit defrost temperature T3 value, (unit: ° C, range: 10-18), the
factory default is 15 ° C;
SH7: Allow indoor unit offline time value, (unit: min, range: 60-480),
you can choose from 8 values of 60, 120, 180, 240, 300, 360, 420, 480.
The factory default is 60 minutes;
SH8: Allow indoor unit offline quantity value, (unit: pcs, range: 0-6), the
factory default is 2;
SH9: Reserved.
3) Forced cooling
Short Press 'COOL' button to enter forced cooling.
The 1 time press is forced cooling, 'dH' is displayed.
st
The 2 time press is to exit forced cooling to standby state.
nd
The 3 time press is forced cooling, and so on.
th
Forced cooling will automatically exit after 1 hour.
5-4 Terminal functions
See Fig.5.1 and Fig.5.2.
L
L
1
2
380-415V 3N～ 50Hz
Fig.5.1 Power supply terminal
L
N
3
CN30
K1K2 E
O A E
ODU
Digital
Ammeter
Monitor
Fig.5.2 Communication terminal
5-5 Electrical system and installation
1) Precautions in electrical wiring
1. The power supplies for indoor unit and outdoor units shall be
separately designed.
2. The power supply must be designed with special branch circuit, and
equipped with current leakage protector and manual switch.
3. Power supply, current leakage protector and manual switch
connected to the same outdoor unit must be with the versatility. (The
indoor unit power supply in the same system must be in the same circuit
and switched on or off at the same time, or the system service life may be
shortened and the machine may fail in starting up.)
4. The indoor and outdoor connecting and wiring system shall be
included in the same system with the refrigerant tube system.
5. To reduce the interference, the indoor and outdoor signal line shall be
the 2-core shielded cable other than unshielded multi-core cable.
6. Electrical wiring shall be performed according to national related
standards.
7. Electrical wiring must be done by a professional electrician. Supply
cords of parts of appliances for outdoor use shall not be lighter than
polychloroprene sheathed flexible cord (code designation 60245 IEC 57).
8. The indoor unit and outdoor unit must have a reliable grounding wire,
2) Power supply cable for outdoor unit
1. Power cable diameter and air circuit selection
Tab.5.4 Power supply cable for outdoor unit
Item
Power
supply
Type
8HP
380V3N～50Hz
10HP
380V3N～50Hz
12HP
380V3N～50Hz
14HP
380V3N～50Hz
16HP
380V3N～50Hz
18HP
380V3N～50Hz
20HP
380V3N～50Hz
22HP
380V3N～50Hz
24HP
380V3N～50Hz
26HP
380V3N～50Hz
28HP
380V3N～50Hz
30HP
380V3N～50Hz
32HP
380V3N～50Hz
!
NOTICE
1. Each unit has a separate power supply, so the electrical wiring for
each unit shall comply with the corresponding standard.(Tab.5.4)
2. The diameter and continuous length of cables in the table is for the
situation when the voltage drop is within 2%, and the cable diameter shall
be selected as per the related specification if the continuous length goes
beyond the value in the table.
14
CN11
CN28
MODBUS
X Y E
P Q E
A B E
ADU
Modbus
IDU
Centralized
COMM.
COMM.
Controller
Manual
Recommended
cable diameter
switch(A)
(mm²)( 20mm)
<
Capacity
6.0×5
32
6.0×5
32
6.0×5
32
10.0×5
50
10.0×5
50
16.0×5
63
16.0×5
63
16.0×5
63
16.0×5
63
16.0×5
63
16.0×5
63
25.0×6
80
25.0×5
80
CN13
ODU
H1H2E
ODU
COMM.
Current
leakage
protector
100mA
<0.1sec
V.2
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