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Installation and Maintenance
(1)Overload protection function under cooling or dry mode: If Touter
tube≥Tstop due to overload under cooling mode, the unit stops
operation due to overload protection under cooling mode; if Touter
tube≥Tfrequency limiting due to overload under cooling mode and
the compressor has stopped for 3mins, the complete is allowed to
resume operation;
(2)Under cooling or drying mode, if Touter tube≥Tfrequency limiting
due to overload under cooling mode, the operation frequency of
compressor may decrease or stop increasing.
(3)Overload protection function under heating mode: If Touter
tube≥Tstop due to overload under heating mode, the unit stops
operation due to overload protection under heating mode; if Touter
tube≥Tfrequency limiting due to overload under heating mode and
the compressor has stopped for 3 mins, the complete is allowed to
resume operation;
(4)Under heating mode, if Touter tube≥Tfrequency limiting due
to overload under heating mode, the operation frequency of
compressor may decrease or stop increasing.
(5)If the unit stops operation for consecutive 6 times due to
overload protection, the unit can’t resume operation automatically.
The error code will displayed continuously. E8 is displayed on
the dual-8 nixie tube. It needs to press ON/OFF button to resume
operation. During operation process, if the operation time of
compressor exceeds the clear time for overload protection times,
the shutdown times due to overload protection will be cleared or
counted again.Turning o the unit, fan mode or switching to the
heating mode can immediately clear the error and error times (if
the unit has stopped operation for 6 times, switching mode can’t
eliminate the error).
3.9.4 Discharge temperature protection function of compressor
(1) If Tdischarge≥Tstop due to discharge protection, the unit stops
operation due to discharge protection; if Tdischarge≥Tdischarge
frequency limiting, and the compressor has stopped for 3min, the
complete is allowed to resume operation;
(2)If Tdischarge≥Tdischarge frequency limiting,the operation
frequency of compressor may decrease or stop increasing.
(3)If the unit stops operation for consecutive 6 times due to
compressor discharge protection, the unit can’t resume operation
automatically. It needs to press the ON/OFF button to resume
operation. During operation process, if the operation time of
compressor exceeds the clear time for discharge protection times,
the shutdown times due to discharge protection will be cleared or
counted again.Turning o the unit or switching to the fan mode can
immediately clear the error and error times(if the unit has stopped
operation for 6 times, switching mode can’t eliminate the error).
3.9.5 IPM module protection function
When the compressor is turned on, If IPM module is overcurrent
or the control voltage is too low due to some abnormality, IPM will
immediately check the module protection signal. Once the module
protection signal is detected, the unit stops operation immediately
because of IPM module protection. If module protection is resumed
and the compressor has stopped for 3 mins, the complete unit is
allowed to resume operation.
If the unit stops operation for consecutive 6 times due to module
protection protection, the unit can’t resume operation automatically.
It needs to press the ON/OFF button to resume operation. During
operation process, if the operation time of compressor exceeds
the clear time for module protection times, or the compressor is
from operation to shutdown (except showdown due to module
protection), the shutdown times due to module protection will be
cleared or counted again.
3.9.6 Module overheating protection function
(1) When Tmodule≥Tmodule frequency limiting, the operation
frequency of compressor may decrease or stop increasing.
(2) If Tmodule≥Tmodule stop, the system will stop operation due
to protection. If Tmodule
＜
Tmodule frequency limiting, and the
compressor has stopped operation for 3min, the complete unit is
allowed to resume operation.
(3) If the unit stops operation for consecutive 6 times due to
compressor module overheating protection, the unit can’t resume
operation automatically. It needs to press the ON/OFF button to
resume operation. During operation process, if the operation time
of compressor exceeds the clear time for module protection times,
the shutdown times due to module protection will be cleared or
counted again.Turning o the unit or switching to the fan mode can
immediately clear the error and error times (if the unit has stopped
operation for 6 times, switching mode can’t eliminate the error).
3.9.7 Defrosting detection
For ensuring the heating eect, the unit will defrost automatically
according to the frosting status on the outdoor unit, During
defrosting period, heating indicator flashes (on for 10s and o 0.5s
circularly)
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