30
Trial operation and the performance
5-minute delay function
Cooling/heating operation
Heating mode characteristic
The unit operation condition
Protection device (such as high pressure switch)
When power failure
Defrosting in heating mode
• If starting up the unit after being powered off, the compressor will run about 5 minutes later
against being damaged.
• Indoor units can be controlled individually, but cannot run in cool and heat mode at the same
time. If the cool mode and the heat mode are existing simultaneously, the unit set latter will be
standby, and the unit set earlier will run normally.
• If the A/C manager sets the unit at cooling or heating mode
fi
xedly, the unit can not run at the
other modes.
• In operation if outdoor temp. arises, indoor fan motor will turn to low speed or stop.
• To use the unit properly, please operate the unit under the allowed condition range.
If operating beyond the range, the protection device will act.
• The relative humidity should be lower than 80%. If the unit runs at the humidity over 80% for a
long period, the dew on the unit will drop down and the vapour will be blowed from air outlet.
• High pressure switch is the device which can stop the unit automatically when the unit runs
abnormally.
When the high pressure switch acts, the cooling/heating mode will stop but the running LED
on wired controller will be light still. The wired controller will display failure code.
• When the following cases occur, the protection device will act:
In cooling mode, air outlet and air inlet of outdoor are clogged.
In heating mode, indoor
fi
lter is sticked with duct; indoor air outlet is clogged.
When protection device acts, please cut off the power source and re-start up after eliminating
the trouble.
• When power is failure in running, all the operations will stop.
• After being electri
fi
ed again, if with re-satrt up function, the unit can resume to the state before
power off automatically; if without re-satrt up function, the unit needs to be switched on again.
• When abnormal occurs in running because of the thunder, the lightning, the interference of
car or radio, etc, please cut off the power source, after eliminating the failure, press "ON/OFF"
button to start up the unit.
• In heating mode, outdoor defrosting will affect the heating ef
fi
ciency. The unit will defrost for
about 2~10 minutes automatically, at this time, the condensate will
fl
ow from outdoor, also
in defrosting, the vapour will appear at outdoor, which is normal. Indoor motor will run at low
speed or stop, and outdoor motor will stop.
