Main Protection; Operation Modes And Functions - Vivax ACP-12CH35AERI Service Manual

7.3 Main Protection

7.3.1 Three minutes delay at restart for
compressor
1 minute delay for the 1
minutes delay for others.
7.3.2 Temperature protection of compressor
top
The unit will stop working when the compressor
top temp. protector cut off, and will restart after
the compressor top temp. protector restart.
7.3.3 Temperature protection of compressor
discharge
Compressor discharge temp. T5>115℃ for 5s,
compressor stops.
7.3.4 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
7.3.5 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.
7.3.6 Indoor fan delayed open function
When the unit starts up, the louver will be active
immediately and the indoor fan will open 7s later.
If the unit runs in heating mode, the indoor fan
will be also controlled by anti-cold wind function.
7.3.7 Compressor preheating functions
Preheating permitting condition:
When T4(outdoor ambient temperature)＜3°C,
the preheating function will be activated.
7.3.8 Sensor protection at open circuit and
breaking disconnection.
When there's only one temperature sensor in
malfunction , the air conditioner will keep working
but show the error code, in case of any
emergency use.
When there's more than one temperature sensor
in malfunction, the air conditioner will stop working.
7.3.9 Refrigerant leakage detection
st time stand-up and 3
This function is only active in cooling mode. It can
better prevent the compressor being damaged by
refrigerant leakage or compressor overload.
Open condition:
When compressor is active, the value of the Coil
temperature of evaporator T2 has no change or
very little change.

7.4 Operation Modes and Functions

7.4.1 Fan mode
( 1) Outdoor fan and compressor stop.
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