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once again, all displays will resume.
8.3 Main Protection
8.3.1 Three Minutes Delay at restart for compressor.
---- 1 minutes delay for the 1
st
time start-up and 3 minutes delay for others.
8.3.2 Temperature protection of compressor top.
---- Top temp. protector cut off for 30s and restart the compressor with 3 minutes delay.
8.3.3 Temperature protection of compressor discharge.
When the compressor discharge temperature is getting higher, the running frequency will be
limited as below rules:
----Compressor discharge temp. T5>115
℃
for 5s;compressor stop.
---- 108<T5<115
℃
, decrease the frequency to
the lower level every 3 minutes.
---90<T5<105
℃
, keep running as the current frequency.
----T5<90
℃
, no limit for frequency or restart compressor
8.3.4 Fan Speed is out of control.
---- When Indoor Fan Speed is too low (lower than 300RPM for 50 seconds), the unit stops and LED
displays failure
8.3.5 Inverter module Protection.
----Inverter module Protection itself has a protection function against current, voltage and temperature.
If these protections happened, the corresponding code will display on indoor unit LED. The unit will
stop operation if the protection occurred, and recover 3min delay after the protection disappeared.
8.3.6 Indoor fan delayed open function
----When system starts up, the louver will be active immediately and the indoor fan will open after 10s.
----If the system runs at heating mode, the anti-cold wind function has priority.
8.3.7 Compressor preheating functions.
----Preheating permitting condition:
If the main relay closed, T4
＜
3
℃
and the m achine
is first power on, or T4
＜
3
℃
and compr
essor has
stopped for over 3 hours, the compressor heating cable will work.
----Preheating mode:
A weak current flows through the coil of compressor from the wiring terminal of compressor, then the
compressor is heated without operation.
