Haier HSU-07HV03/R2 Service Manual page 45

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 64¡æ, the outdoor fan motor
stops.When the temp descends to 60¡æ, the outdoor fan motor is restarted and fan speed
invertage frequence is more than 45 seconds. High temperature expiration prevention: When
the temp. of coil pipe is above 73¡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:
(HSU-12HV03/R2:5.8A;HSU-09HV03/R2:4.5A;HSU-07HV03/R2:4.2A)
senconds continuously,
(HSU-12HV03/R2:5.2A;HSU-09HV03/R2:4.2A;HSU-07HV03/R2:3.8A)
regained ¡£ Current
(HSU-12HV03/R2:9.5A;HSU-09HV03/R2:8.5A;HSU-07HV03/R2:8.5A) , 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 off.(different mode has the different CT
value)
Overcooling protection:
One and a half minute later after compressor starts, if the temperature of coil pipe is below -4¡æ,
compressor and air outlet stop, and air inlet runs according to the temp. setting. Compressor can be
Air Conditioner
If current
outlet air stops.
peak expiration protection:
Edition:2006/1/10
detected is
and
If current detected
, outlet
If current detected
above
lasts 10
is below
air is
is above