121
Back:
Press “Back” key to the previous menu, and long press the “Back” key to exit the operation.
③ Display unit 1(d1) operation:
When entering into the display unit 1:
The function section display running code uninterrupted and the data section display the current value
uninterrupted.
“＋” “－”Keys are invalid in the operation.
“＋” “－”Keys are invalid in the operation.
④ If no operation is performed within 1min, it will automatically return to the normal display.
1.3.3 The meaning of running code
Sorts
Function
section
Data section Remarks
Control Unit CU Blank
Vacuum operation AU The current parameter
Set refrigerant
recovery mode
Fo The current parameter
Use the “＋” “－” keys to switch ON, OF.
ON represents that the unit is
running the current state.
OF represents that the unit isnot
running the current state.
Display Unit 1
d1
Blank
Display suction
temperature
NH
Suction temperature. For
example, 15 represents 15℃
Display discharge
temperature
NP
Discharge temperature. For
example, 70 represents 70℃
Display low pressure PL
Low pressure. For example, 95
represents 0.95Mpa
Display high
pressure
PH
High pressure. For example,
280 represents 2.80Mpa
“＋” “－”Keys are invalid in the operation.
1.3.4 For example: How to Display low pressure
① Long press “Fuc” key for more than 2s to enter the first-level menu: the function section flashes “CU”
code and the data section is blank.
② Switch with the “Fuc” key again: the function section flashes “d1” code and the data section is blank.
③ Press “Enter” key to enter the second-level menu: the function section flashes “NH” code and the data
section display the current suction temperature.
④ Switch with the “Fuc” key to display low pressure: the function section flashes “PL” code and the data
section display the current low pressure.
1.3.5 How to Recover the refrigerant to the outdoor unit
1) Let all the indoor units work in the Cooling mode for more than half one hour.
2) Set the units running the “Fo” mode.
① Long press “Fuc” key for more than 2s to enter the first-level menu: the function section flashes “CU”
code and the data section is blank.
② Press “Enter” key to enter the second-level menu: the function section flashes “AU” code and the data
section display the current parameters.
③ Switch with the “Fuc” key until the function section flashes “Fo” code and the data section display the
current parameters.
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