Opening degree equals the display data times 8
7.4.9No. 3 opening degree of electronic expansion valve:
Opening degree equals the display data times 8
7.5 Protection
7.5.1 3 minutes delay at restart for compressor.
7.5.2 Discharge temperature protection of compressor, compressor stops when the temp. of
discharge is more than 115 and lasts for 10 s. Compressor runs when the temp. of
discharge is less than 90.
7.5.3 Temperature protection of compressor top, compressor stops when the temp. of top
of compressor is more than 120, compressor runs when the temp. of top of compressor is
less than 105.
7.5.4 When AC voltage ≥ 265V for 30 seconds, Outdoor Unit stops operation and alarms.
When AC voltage ≤ 265V for 30 seconds, Outdoor Unit resumes operation.
7.5.5 Inverter module Protection , Inverter module Protection itself has a protection function
against current, voltage and temperature.
7.5.6 Sensor protection at open circuit and breaking disconnection
7.5.7 Fan Speed is out of control. When Indoor Fan Speed is too high(higher than High
Fan+300RPM)or too low(lower than 400RPM), the unit stops and LED displays failure
information and can’t return to normal operation automatically.
7.5.8 Cross Zero signal error warning. If there is no Cross Zero signals in 4 minutes, the unit
stops and LED displays failure information and can’t return to normal operation
automatically.
7.5.9 Current protection: When the current is more than ‘X’ A, the compressor stops.
(X is 7A for 14K 1x2 unit, is 14A for 18K 1x2 unit, is 13.5A for 21 1x3 unit, is 15A for 27K 1x3
unit, is 16A for 27K 1x4 unit and is 21.5A for 36K 1x4 unit. )
7.5.10 Outdoor condenser high temperature protection: Under cooling mode, if T3>65 for 3
minutes, the compressor will stop. When T3<52, the protection is not valid.
7.5.11 Pressure protection (just be available for 27K and 36K 1x4 unit): If low pressure is
lower 0.03MPa, the compressor will stop and when low pressure is higher than 0.10MPa,
the compressor will restart. If high pressure is higher than 3.3MPa, the compressor will stop
and when high pressure is lower than 2.4MPa, the compressor will restart.
7.5.12Compressor pre-heating function: When the outdoor temperature is lower than 3
and the compressor stops operation for more than 3 hours, or the outdoor temperature is
lower than 3 and the power is just put on, the compressor enters into pre-heating condition.
When outdoor temp. is more than 5 or user operate it, pre-heating condition will finish.
7. 6 Fan-only mode
Fan speed is high/mid/low/ Auto
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