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5-minute delay function
If starting up the unit after being powered off, the compressor will run about 5 minutes later
against being damaged.
Cooling/heating operation
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 fixedly, 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.
Heating mode characteristic
Defrosting in heating mode
In heating mode, outdoor defrosting will affect the heating efficiency. The unit will defrost for
about 2~10 minutes automatically, at this time, the condensate will flow 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.
The unit operation condition
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 filter 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.
Protection device (such as high pressure switch)
Trial operation and the performance
