Haier HSU-07HV03/R2 Service Manual page 53

minutes after startup and also can't be started again at least 3 minutes later after
shutdown. There are 3-minute protection with power on for the first time (over 3
minutes with power off). The compressor must be started again 3 minutes later after
shutdown.
There is no 2-minutes limit when changing the temperature setting or shutting off the
machine through the remote controller, and the machine can be shut down
immediately.
Avoiding electrical shock: outlet air is available 2 seconds later after startup.
Timer on, Timer off and sleep control are available.
Control of 4-way valve: When the unit is started for the first time, the 4-way valve starts
runnig 10 seconds earlier than compressor does. After compressor stops runnig, the
4-way valve continues running for 2 minutes and 30 seconds then stops. If changing
the unit from heating to cooling, the 4-way valve is shut off 2 minutes later and
compressor is started 3 minutes later.
Cold blast avoidance mode:
(1)Compressor is interrupted during the defrosting operation and continues to run after
defrosting is completed. When the indoor exchanging temperature is below 23¡æ,
the indoor fan motor is off. When the indoor exchanging temperature is above 23¡æ,
the indoor fan motor is running at weak speed.
(2)If the temperature of coil pipe can't be above 38¡æ 4 minutes later after startup, fan
motor is running at the preset wind speed.
(3) If the temperature of coil pipe is above 38¡æ in 4 minutes after start up, fan motor
is running at the preset wind speed immediately.
(4)If coil pipe descends to the temp. lower than 38¡æ from 38¡æ. fan motor still
running at the preset wind speed.
(5)If the temperature sensor is off. Compressor stops runnig. If the temperature of coil
pipe is above 23¡æ, fan motor enter breeze mode; and if the temperature of coil
pipe is below 20¡æ, fan motor stops running.
(6)Shut down the unit and indoor fan motor stops running.
High temperature protection and high temperature expiration protection:
High temperature prevention: When the temp. of coil pipe is above 65¡æ, the
outdoor fan motor stops.When the temp descends to 60¡æ, the outdoor fan motor is
restarted and
temperature expiration prevention: When the temp. of coil pipe is above 72
¡æ,compressor and outdoor fan motor stop running 2 seconds later, and inlet air
runs as the temp. sensor is off. When compressor stands by for 3 minute and the
temp. of coil pipe is below 64¡æ, the unit can be started again.
Current protection and current expiration protection: (Not detecting within 60 seconds
after startup)
Current protection: If current detected is above (CT1) and lasts 10 senconds
continuously, outlet air stops. If current detected is below (CT2) , outlet air is
regained¡£Current peak expiration protection: If current detected is above (CT3) , 3
seconds later the system enter current cross protection, compressor and air outlet
stop and start again 3 minuts later, and air inlet runs as the temperature sensor is
Air Conditioner
fan speed invertage frequence is more than 45 seconds. High
Edition:2006/1/10