32
Installation and Maintenance
Service Manual
F2: Indoor evaporator sensor start and short circuit (continuously measured failure in 5s)
F3: Outdoor ambient sensor start and short circuit (continuously measured failure in 30s)
F4: Outdoor condenser sensor start and short circuit (continuously measured failure in 30s, and don’t measure within 10 minutes after
defrosted)
F5: Outdoor exhausting sensor start and short circuit (continuously measured failure in 30s after the compressor operated 3 minutes)
H3: Overload protection of compressor H5: Module protection PH: High-voltage protection PL: Low-voltage protection
P1: Nominal cooling and heating test P2: Maximum cooling and heating test
P3: Medium cooling and heating test P0: Minimum cooling and heating test
(12) Drying Function
You may start or stop the drying function under the modes of cooling and dehumidify at the starting status (The modes of automatism,
heating and air supply do not have drying function). When you start the drying function, after stop the machine by pressing the switch
button, you should keep running the inner fans for 2 minutes under low air damper (The swing will operate as the D1 status within 2
minutes, and other load is stopped), then stop the entire machine; When you stop the drying function, press the switch button will stop the
machine directly.When you start the drying function, operating the drying button will stop the inner fans and close the guide louver.
(13) Memory Function
When interrupting the power supply memory content: mode, swing function, light, set temperature and wind speed.
After interrupted the power supply, the machine will start when recovering the power according to the memory content automatically.
(14)Compulsory defrosting function
①
Start up compulsory defrosting function
Under ON status, set heating mode with remote controller and adjust the temperature to 60.8OF. Press “+, -, +, -, +,-” button successively
within 5s and the complete unit will enter into compulsory defrosting status. Meanwhile, heating indicator on indoor unit will ON 10s and
OFF 0.5s successively. (Note: If complete unit has malfunction or stops operation due to protection, compulsory defrosting function can be
started up after malfunction or protection is resumed.
②
Exit compulsory defrosting mode
After compulsory defrosting is started up, the complete unit will exit defrosting operation according to the actual defrosting result, and the
complete unit will resume normal heating operation.
(15)Refrigerant recovery function:
①
Enter refrigerant recycling function
Within 5min after energizing (unit ON or OFF status is ok), continuously press LIGHT button for 3 times within 3s to enter refrigerant
recycling mode; Fo is displayed and refrigerant recycling function is started. At this moment, the maintenance people closes liquid valve.
After 5min, stick the thimble of maintenance valve with a tool. If there is no refrigerant spraying out, close the gas valve immediately and
then turn off the unit to remove the connection pipe.
②
Exit refrigerant recycling function
After entering refrigerant recycling mode, when receive any remote control signal or enter refrigerant recycling mode for 25min, the unit will
exit refrigerant recycling mode automatically If the unit is in standby mode before refrigerant recycling, it will be still in standby mode after
nishing refrigerant recycling; if the unit is in ON status before refrigerant recycling, it will still run in original operation mode.
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