Note: X stands for which system, 1 is system A, 2 is system B.
1.5 Some parameters setting
1. Historical error code query
Press 'CHECK_A' or 'CHECK_B' button to item 60, this is the recent error code:
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 settings at project site
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...
Each parameter item can be changed by pressing 'CHECK_A' or 'CHECK_B' button. After setting parameter, if
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: ℃, range: 5-15), the factory default is 8 ℃;
SH2: Heating T2 target value B (unit: ℃, range: 40-50), the factory default is 44 ℃;
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, which means
this function is 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: Allowed 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: Allowed 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 mode. ‘dC' is displayed.
Short Press 'COOL' button again to exit forced cooling to standby mode.
Forced cooling will automatically exit after 1 hour.
