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valve will stop running after a delay of 30s. The defrosting will start 15s later. After the compressor runs for 7
min or when the defrosting is finished, the compressor will stop, and 30s later the four-way valve will run. 30s
later, the compressor and outdoor fan resume to operation and indoor fan will run after a delay of 3min. Prior to
entering into defrost, if the auxiliary heating is running, then, for defrosting, the auxiliary heating will be stopped
firstly, and 5s later the indoor fan will stop. The indoor fan will run at blowing residual heat mode when the
compressor stops due to failure at heating mode.
In this mode, the reversal valve will not be powered on and the temperature setting range is 16 ~30
7.1.2.3.3 Protection function
Anti-high temperature protection
If the evaporator is detected with a high pipe temperature, the outer fan stops running and if the evaporator
recovers to a normal pipe temperature, the outer fan resumes running.
Noise immunization protection
When "RUN/STOP" is used to turn off the unit, the reversal valve will delay 2 minutes to stop.
Over current protection
Over current protection is the same as the cooling mode
Auxiliary electrical heating power
Operation condition of auxiliary electric heating: for heating mode and when compressor is powered on, and
when the pipe temperature is detected to be too low with the indoor fan running at medium or high speed, the
auxiliary electric heating will be put into operation. When the compressor is powered on, and when the pipe
temperature is detected to be too low with the indoor fan running at low speed, the auxiliary electric heating will
be put into operation.
Stop condition of auxiliary electric heating: when the compressor stops or the pipe temperature is too high or
the environmental temperature is too high, the auxiliary electric heating stops operation. The auxiliary electric
heating will stop when there is failure in the communications. Once it stops, it will require 2min to recover the
operation.
7.1.2.4 Dry mode
For air delivery mode, the indoor fan will run at the setting wind speed and the swing motor will run at the
setting mode and the running indicator will be lit.
7.1.2.5 Auto mode
In this mode, the system will automatically select its running mode based on the change of the ambient
temperature (cooling, dry , heating and air supply). The protection function is same as HEAT/COOL mode.
7.1.2.6 Failure indication of general protection functions at various modes
1
Overload protection
When evaporator pipe temperature is detected high, if it is still higher after the compressor runs in a limited
frequency, the compressor will stop running. In auto HEAT or HEAT mode, the indoor fan will blow for 60
seconds and then stop, In other modes, the indoor fan will run at the setting speed and display H4.
Evaporator pipe temperature is the temperature of outdoor heat exchanger when cooling or temperature of
indoor heat exchanger when heating.
2
Compressor delay protection
The compressor will delay 3min to start again after stopping.
3
Compressor discharge temperature protection
When discharge temperature is too high, the compressor will stop and it will resume running after 3 minutes
and display E4.
4
Communications malfunction
Communications malfunction means that no correct signal can be received continuously within 3 minutes. In
this case, the outdoor unit stops operation. The residual heat blowing will be stopped at auto heating or heating
mode. As to other modes, the indoor fan will run at the setting wind speed.
5
Module protection
The compressor will stop at module protection and the compressor will resume back to operation when it has
stopped for 3min.
6
Status of indicator at receiver board of indoor unit
The receiver board indicator at running is at normal status and when the indicator signal received three times
continuously within 6 seconds are not the same as the previous one will be recognized as pressing one time
the indicator button. In this case, the indicator of receiver board will enter into detection mode and will
automatically exit from the detection mode in 3 minutes.
7.1.3 Other controls
7.1.3.1 Power ON/OFF
Each time the On/Off button of the remote controller is pressed, the On/Off mode will be changed over once.
7.1.3.2 Mode selection
Press the MODE button on the remote controller to select and display the following modes: AUTO, COOL, DRY,
FAN, and HEAT.
7.1.3.3 Temperature setting selection button
Each time TEMP or TEMP button is pressed, the setting temperature will be increased or decreased by 1℃,
with the adjusting range being 16～30 . In AUTO mode, this button does not function.
7.1.3.4 Time setting button
Time setting button of remote controller: the time selection range is 0-24h, with the minimum unit being 0.5h.
℃
—30—
℃
℃
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