Haier HSU-09HSA03/R2(DB) Full-automationoperation, Running-in, Low load protection controlling

Haier air conditioner Edition:20070116

When the system switch from other mode to auto mode, if the operation status change (i.e. first determine and then operation), it will stop for 3 minutes and then determine temperature based on the indoor ventilation temperature.

9.2 Full-automation operation

After system is on and the operation mode will switches to auto mode, the system determine operating mode by the difference between current set temperature and the room temperature, and then operate in the determined mode. In the following selection condition, Tr indicate room temperature Ts indicate set temperature.

In First enter auto mode, select operating mode as following condition:

Tr=Ts-3	select cool mode
Tr Ts-3	select heat mode

When system enter the auto mode, the operation mode will switch between cool and heat according to change of the indoor temperature: if the unit operating in the cool mode, when system temperature arrive at stop value of compressor, the compressor to off and stop continuously for 15 minutes, and then to detect the room temperature, at this point, if Tr Ts-3 , then the system enter the heat mode, otherwise it will operate continuously in the cool mode; if the unit operating in the heat mode, when system temperature arrive at stop value of compressor, the compressor to off and stop continuously for 15 minutes, and then to detect the room temperature, at this point, if Tr Ts+3 , then the system enter the cool mode, otherwise it will operate continuously in the heat mode.

This mode has timer and sleep function, if the system enter the cool mode, then enter the cool+ sleep mode, if enter the heat mode then enter heat + sleep mode.

Select swing or sticking on one position for the fan blade, and fan speed including: low, middle, high and auto fan, you can select any one of them without control.

. Running-in

In the Running-in mode the indication frequency is 58Hz, the air capacity is enhanced.

Running-in is off after 30 minutes. When the system received the remote control signal in the running-in mode, the system will exit this mode.

No taking activities under low load protection.

. Low load protection controlling

The standard of heat alternating temperature sensor

B destiny=3700 R (25 degrees) =10KO

When it operates for coolness making or defrosting, low load protection will be taken based on Heat exchange temperature as the following picture shows

Controlling under low load protection

If selection model is GANGDAcommunication, the indoor unit have not this function.

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