7.9 Outdoor unit LED display function:
1.When
2.When operation it display frequency of outdoor unit;
3.When defrost it display “df”;
4.When a protection or error occurred, it display as the following table:
Display | Explanation |
E0 | EEPROM error |
E1 | No 1 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective |
E2 | No 2 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective |
E3 | No 3 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective |
E4 | Outdoor temp. sensor or connector of temp. sensor is defective |
E5 | Compressor voltage protection |
E6 | No 4 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective |
E7 | Indoor and outdoor communication error |
P0 | Compressor top protection against temperature |
P1 | High pressure protection |
P2 | Low pressure protection |
P3 | Compressor current protection |
P4 | Inverter module protection |
P5 | Outdoor low temp. protection |
P6 | Condenser |
7.10 Check function:
There is a check button on outdoor pcb. When push this button, the outdoor LED can display in sequence:
Capacity demand→Running mode →revised capacity → fan state →No.1 evaporator pipe temp. →No.2 evaporator pipe temp.→No.3 evaporator pipe temp.→No.4 evaporator pipe temp.→outdoor pipe temp. → Outdoor temp. →discharge gas temp.→current of outdoor unit → No. 1 opening degree of electronic expansion valve → No. 2 opening degree of EXV → No. 3 opening degree of EXV→No. 4 opening degree of EXV→indoor unit number→last protection/error code→capacity demand(cycle)
Explanation for the some display content:
1. Running mode:
Display | Corresponding mode |
0Off
1Cooling mode
2Heating mode
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