Haier HSU-07HV03/R2 Service Manual page 64

not allowed.
Timer off: Unit working, the pattern of clock displaied on the LCD; When
reaching time setting, unit enters shutdown mode, and sleep function can be set.
If timer off and sleep are set synchronously, the one which time is short run first.
Executing shutdown instruction clear timer and sleep function.
Timer on and timer off can be set synchronously. when they are completed,
4.2 Sleep function (saving function at night):. The pattern of clock displaied on the LCD
In cooling/defrosting mode, the temp. setting increases 1¡æ one hour later after
startup. After another hour the temp. setting increase by more 1¡æ and then run
continuously for another 6 hours and then close.
In heating mode, the temp. setting decrease 2¡æ one hour after startup. After
another hour the temp. setting decrease by more 2¡æ. After 3 hours the temp.
setting rise by 1¡æand then run continuously for another 3 hours and then close.
If the wind speed is set to high or medium before going to bed, the wind speed
shifts to medium or low. If the wind speed is set to low before going to bed, the
wind speed keep unchanged.
4.3 Protection of malfunction of temperature sensitive resistance.
The temperature sensitive resistor is short circuit or open circuit, the machine
doesn't work.
During defrosting, don't detect if the temperature sensor short circuit or open
circuit.
Detect the temperature of coil pipe is below -40¡æ, then think the temperation
circuit of coil pipe is open.
Detect the temperature of coil pipe is above 95¡æ, then think the temperation
circuit of coil pipe is short .
Detect the temperature of inlet air is below -20¡æ, then think the temperation
circuit of inlet air is open.
Detect the temperature of inlet air is above 90¡æ, then think the temperation
circuit of inlet air is short.
4.4 Emergency switch imput:
Press the switch of emergency operation, then buzzer rings once and unit enters the
automatic operation mode. (emergency operation)
If the switch is kept pressed for 5 seconds, buzzer ring two times and unit enter test
run mode.
Press the switch again, and then closes.
The unit can receive remote control.
Enter emergency operation from timer mode, then timer is cancelled.
Test run:
1) The temperature sensor of inlet air doesn't work, and compressor starts (but
subject to the limit of -minute delay excluding the first time), and high wind,
cooling, and air door is open.The indoor fan motor runs, compressor relay and
the one of outdoor fan motor is closed
2) During test run:
Air Conditioner
Edition:2006/1/10