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Technical Information
Service Manual
(6) Blow Function
Blow function can be set in cooling and dry mode.
(7) Indoor Fan Control
Indoor fan can be set at super-high, high, medium or low. Meanwhile, the fan will operate at super-high, high, medium and low fan
speed respectively and it can also set at auto fan speed.
(8) Memory Function
Memory content includes mode, up & down swing, light, set temperature and set fan speed, general timer (clock timer cant be
memorized), Upon power failure, the unit after power recovery will automatically start operation according to memorized content. The
unit, without timer setting before power failure, will operate according to the last setting after power recovery. The unit, with general
timer setting which has not been fulfi lled before power failure, will memorize the time setting and re-calculate the time after power
recovery. If there is timer function in the last remote controller command but setting time has reached, the system will act as timer on/off
setting before power failure. After power failure, the system memorizes the operation states before power failure without timer action.
Clock timer can not be memorized.
(9) Locked protection to PG motor
If the indoor fan motors rotational speed after startup keeps slow for a continuous period of time, the unit will stop operation and display
“H6”.
(10)Turbo Function
This function can be set in cooling or heating mode to quickly cool or heat the room(Turbo function is not available in auto, dry and fan
mode). After pressing the turbo button, indoor fan will operate at super-high fan speed.
4. Malfunction Detection for Temperature sensor
(1) Indoor ambient temperature sensor:
Malfunction of temperature sensor will be detected at any time;
(2) Indoor tube temperature sensor
Malfunction of temperature sensor wont be detected during defrosting period. It starts detecting the malfunction of temperature sensor
after defrosting is fi nished for 5 mins. Malfunction of temperature sensor will be detected at any other time.
(3) Protection of temperature sensor
1. When the temperature sensor is detected short circuit for 5s successively:
The detected temperature by the temperature sensor is too high and the complete unit will stop operation, meanwhile, the protection
and malfunction of temperature sensor will be displayed accordingly.
2. When the temperature sensor is detected open circuit for 5s successively: The unit will stop operation due to protection and the
corresponding malfunction of temperature sensor will be displayed directly.
5. Refrigerant Recovery Function (applicable when changing installation location or in maintenance)
(1) Enter refrigerant recovery 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 closs 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 recovery 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 finishing refrigerant recycling; if the unit is in ON status before refrigerant recycling, it will still run in original operation mode.
6.Compulsory Defrosting Function
(1) Start up compulsory defrosting function
Under ON status, set heating mode with remote controller and adjust the temperature to 16
o
C. 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.
