Service manual

Timer Function Overcurrent Protection Running Mode

Diagnosis and Alarm Function

Exhaust Over-temperature

Protection

Defrost

Sleep Function Reverse Phase Protection Test

Auto Function Antifreeze Protection Sleep

Prevention of Cold Air Over-temperature Protection Temperature

Blowing of Residual Heats Sensor Fault Alarm Fault Code

Sub-room Control Function

Centralized Control★

◇ Control Functions:

 Memory Function (Upon restart after a power shutdown, the unit will run under its original status

without any change in mode and parameters).

 Remote Control (The unit is provided with different controllers for your option. The wired controller

can receive the command from a distance up to 10 meters).

 Timer Function (The unit may be set to AUTO START / STOP separately or in cycle).

 Diagnosis and Alarm Function (Upon any fault during operation, the unit will display the fault code

and give out alarm).

 Energy Saving Function (The unit can automatically perform cost-effective control under

energy-saving mode).

 Auto Function (When the unit is under cooling or heating mode, the indoor fan can automatically

adjust its speed according to the actual needs of the system).

 Cold Air Prevention (Under heating mode, the indoor fan will not start until the heat exchanger of

indoor unit is higher than the indoor temperature).

 Sub-room Control Function (The unit can be started or stopped from the switch in any sub-room).

 Blow of Residual Heats (After the compressor is stopped under heating mode, the indoor fan will

continue to run a period of time before it is stopped).

◇ Protection Functions:

 High / Low Pressure Protection (If the suction pressure of the compressor is too low and the

exhaust pressure is two high, the compressor will be stopped and the fault code will be displayed).

 Overload Protection: (The compressor is complete with heat protection. The compressor will be

stopped if its temperature exceeds the permissible value, and will be started as long as the

temperature resumes to normal.

 Over-current Protection (When the compressor current exceeds the normal value, the compressor

will be stopped and the fault code will be displayed).

 Exhaust Over-temperature Protection (When the exhaust temperature of the compressor exceeds

the permissible value, the compressor will be stopped and the fault code will be displayed).