Haier H2SM Series Service Manual page 9

Two. Indoor Fan Control
2-1. Heating
2-1-1. Warm Start
Cold Air Control in Heating Mode
Heat Exchange Temperature:
THHOT3
37.0¡ æ
THHOT2
35.2¡ æ
THHOT1
25.2¡ æ
THHOTR
16¡ æ
Stop SLO
Conduct indoor fan control as per the above diagram and the heat exchange temperature.
1. Judge wind speed when heat exchange temperature is rising:
Fan is at super low level when heat exchange temperature is below 35.2¡ æ .£ ¨ Fan will stop upon
initially energized into heating mode or after defrosting, or when heat exchange temperature is lower
than 25.2¡ æ . Fan is at super low level when temperature is higher than 25.2¡ æ
35.2¡ æ .£ © ;
Fan is at low level when heat exchange temperature is between 35.2¡ æ
Fan will operate as per setting when heat exchange temperature is above 37¡ æ .
2. Judge wind speed when heat exchange temperature is falling:
Fan is at low level when heat exchange temperature is below 35.2¡ æ
Fan is at super low level and will maintain the mode when heat exchange temperature is lower than
25.2¡ æ £ ¨ Fan is at super low level upon initially energized into heating mode or after defrosting, or
heat exchange temperature is lower than 25.2¡ æ
exchange temperature falls below 16¡ æ .£ ©
3. Wind speed is at super low or low level when heat exchange temperature is rising. If heat exchange
temperature fails to enter the next temperature zone after 4 mins while wind speed rises to the next
stage, it is necessary to maintain the set wind speed for 4 mins before it is adjusted based on heat
exchange temperature.
4. When heat exchange temperature is falling, wind speed will return to set speed if low wind level is
maintained for over 4 mins.
2-1-2. 3 mins standby period when compressor shutdown.
1. When compressor shuts down£ ¨ temperature sensor is off£ © , airflow is low for the initial 20s then
reduced to super low (When in silent operation, it is SSLO);
2. Wind is maintained at super low level in the standby period in heating mode £ ¨ Compressor stops during
mode switch.£ © .
3. Remote control shut down and stop indoor fan.
2-1-3. Compressor Restart
When warm start, airflow is at remote control set level.
When in automatic airflow mode, airflow is determined based on temperature.
Refers to temperature zone control functions.
2-2 Cooling
Airflow is different when airflow is set at high, mid and low level.
When in automatic airflow mode, airflow is determined as per temperature. Refers to temperature control
functions. (Refers to 2-4-8£ ©
2-3. Dehumidification
Air Conditioner
4mins
LO Set
but higher than 16¡ æ ; Fan will stop when heat
5
Edition:2006/1/10
LO SLO Stop
but lower than
and 37¡ æ ;
but above 25.2¡ æ ;