15
Technical Information
Service Manual
(8)I feel control mode
After controller received I feel control signal and ambient temperature sent by remote controller, controller will work according to the ambient
temperature sent by remote controller.
(9)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.
(10)Refrigerant recovery function (applicable for moving the unit or maintaining the unit)
(1) Start up refrigerant recovery function
Set cooling mode with remote controller within 5min after energization, adjust temperature at 16
O
C and press light button on remote
controller for 3 times successively to any one indoor unit within 3s and then the complete unit will enter into refrigerant recovery status. All
indoor units display Fo. Maintenance person close all liquid valves. After 5min, withstand the thimble of all checking valves with tools one by
one. If there’s no refrigerant spraying out, close corresponding valve immediately, turn off the unit with remote controller and then remove the
connection pipe.
(2) Exit refrigerant recovery function
During refrigerant recovery process, if any one indoor unit receives any remote control signal or refrigerant recovery function has operates
for about 25min, refrigerant recovery function will be exited automatically. If the complete unit is at standby status before refrigerant recovery,
the complete unit will still at standby status after refrigerant recovery. If the complete unit is at ON status, the unit will operate according to
original operation mode.
(11)Ambient temperature display control mode
1. When user set the remote controller to display set temperature (corresponding remote control code: 01), current set temperature will be
displayed.
2. Only when remote control signal is switched to indoor ambient temperature display status (corresponding remote control code: 10) from
other display status (corresponding remote control code: 00, 01,11),controller will display indoor ambient temperature for 3s and then turn
back to display set temperature.
Under this mode, indoor fan operates at set fan speed. Compressor, outdoor fan, 4-way valve and electric heating tube stop operation.
Indoor fan can select to operate at high, medium, low or auto fan speed. Temperature setting range is 16~30
O
C.
(12)Off-peak energization function
Adjust compressor’s minimum stop time. The original minimum stop time is 180s and then we change to:
The time interval between two start-ups of compressor can’t be less than 180+T s(0≤T≤15). T is the variable of controller. That’s to say
the minimum stop time of compressor is 180s~195s. Read-in T into memory chip when refurbish the memory chip each time. After power
recovery, compressor can only be started up after 180+T s at least.
(13) SE control mode
The unit operates at SE status.
(14) X-fan mode
When X-fan function is turned on, after turn off the unit, indoor fan will still operate at low speed for 2min and then the complete unit will be
turned off. When x-fan function is turned off, after turn off the unit, the complete unit will be turned off directly.
(15) 8º heating function
Under heating mode, you can set 8º heating function by remote controller. The system will operate at 8ºset temperature.
(16)Turbo function
Turbo function can be set under cooling and heating modes. Press Fan Speed button to cancel turbo setting. Turbo function is not available
under auto, drying and fan modes.
(17)Mode shock
When there’s indoor unit under operation, if start up other indoor unit and the setting mode is inconsistent with that indoor unit, mode shock
will occur. The indoor with mode shock displays “E7” and indoor fan stops operation. Corresponding relationship for mode shock and
operation status after shock is as below:
