innovair Vexus VIN310C2V31, User Manual

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INNOVAIR INVERTER VEXUS
SERVICE MANUAL
8.3 Main Protection
8.3.1 Three minutes delay at restart for
compressor
1 minute delay for the 1
st
time start-up and 3
minutes delay for others.
8.3.2 Temperature protection of compressor
top
The unit will stop working when the compressor
top temperature protector cut off,
and wi
ll
restart after the compressor top temperature
protector restart.
8.3.3 Temperature protection of compressor
discharge
Compressor discharge temperature TP>115
℃
for 5s, compressor stops.
8.3.4 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
8.3.5 Inverter module protection
The Inverter module has
a prot
ection function
about current, voltage and temperature. If these
protections happen, the corresponding code
will display
on i
ndoor unit
and t
he unit will stop
working.
8.3.6 Indoor fan delayed open function
When the unit starts up, the louver will
be ac
tive
immediately
and t
he indoor fan will
open
7s
later.
If the unit runs in heating mode, the indoor fan
will
be al
so controlled by anti-cold wind
function.
8.3.7 Compressor preheating functions
Preheating permitting condition:
When T4(outdoor ambient temperature)
＜
3°C,
the preheating function will
be ac
tivated.
8.3.8 Sensor protection at open circuit and
breaking disconnection.
When there’s only
one t
emperature 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.
8.3.9 Refrigerant leakage detection
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.
8.3.10 Zero crossing detection error
protection
If AC detects time interval is not correct for
continuous 240s, the unit will stop and the LED
will display the failure. The correct zero
crossing signal time interval should be between
6-13ms.
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