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PART6. Operation Description
1. Abbreviation
T1: Indoor room temperature
T2: Coil temperature of evaporator
T3: Coil temperature of condenser
T4: Outdoor ambient temperature
T5: Compressor discharge temperature
2. Main Protection
2.1 Three Minutes Delay at restart for compressor
st
1 minute delay for the 1
time start-up and 3 minutes delay for others.
2.2 Temperature protection of compressor top
The unit will stop working when the compressor top temperature protector cut off, and will restart after
the compressor top temperature protector restart.
2.3 Temperature protection of compressor discharge
When the compressor discharge temperature is getting higher, the running frequency will be limited as
below rules:
---Compressor discharge temperature T5>115℃ for 5s, compressor stops.
---108<T5<115℃, decrease the frequency to the lower level every 3 minutes.
---90<T5<105℃, keep running at the current frequency.
----T5<90℃, no limit for frequency.
2.4 Fan Speed is out of control
When Indoor Fan Speed keeps too low (300RPM) for certain time, the unit will stop and the LED will
display the failure
2.5 Inverter module Protection
The Inverter module has a protection function about current, voltage and temperature. If these
protections happen, the corresponding code will display on indoor unit and the unit will stop working.
2.6 Indoor fan delayed open function
When the unit starts up, the louver will be active immediately and the indoor fan will open 10s later.
If the unit runs in heating mode, the indoor fan will be also controlled by anti-cold wind function.
PART6, 1
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