Haier HSU-22H03/R2DB - Page 25

One. System Major Function
Sensor Code Definition: Tai= Indoor Ambient Temperature, Tao=Outdoor Ambient
Temperature, Tc1=Indoor Coil, Td= Air Discharge, Te= Outdoor Coil, Ts=Air Intake
1.1: Outdoor Unit Operation Frequency and Control
1.1.1: Compressor Operation Frequency Control
z Compressor Operation Frequency Range:
Outdoor Temperature ~0℃ 0℃~
Heating 17RPM 110RPM 17RPM 120RPM
Cooling 20RPM 110RPM 20RPM 120RPM
Defrosting 88rpm
1.1.2: Compressor Startup
Regardless of target frequency of indoor unit, each time when compressor is from off to on, it
must maintain 60Hz and 90Hz for one minute respectively (Frequency will be immediately
decreased under the condition that outdoor unit air discharge temperature overheating protection
is activated or overcurrent of compressor) then the compressor will operate towards target
frequency. This process does not exist in normal operation of unit.
1.1.3:Heating:
z When completing compressor startup operation, it will operate as per frequency of
indoor unit.
z After 2 minutes, compressor operation frequency will be compensated as per relevant
conditions.
1.1.4 Cooling & Dehumidification:
z When completing compressor startup operation, it will operate as per frequency of
indoor unit.
z After 2 minutes, compressor operation frequency will be compensated as per relevant
conditions.
1.1.5: Compressor Frequency Increase/Decrease Speed
Rapid Frequency Increase/Decrease Speed 1 ----------1HZ/s
Slow Frequency Increase/Decrease Speed 2 -----------1HZ/10s
1.2: Outdoor Fan Control
1.2.1: Wind speed control when AC fan is adopted for outdoor unit.
z Whether to use AC fan or DC fan is determined by EEPROM
z Residual Heat Blow: After compressor shuts down in cooling mode, fan will run for 30s at low
speed before stop.
z Wind Speed Adjustment Table (when compressor starts up for 3 minutes)
Ambient Temperature ~10 10~25 25~
Cooling & Dehumidification Low Wind Low Wind High Wind
Heating High Wind Low Wind Low Wind
z Wind Speed Adjustment Table
(based on ambient temperature and compressor frequency after compressor runs for 3
minutes)
Cooling Compressor Frequency F<25Hz 25Hz<=F<45Hz 45Hz<=F
Above 28℃ Low Wind High Wind High Wind
Tao
Below 28℃ Low Wind Low Wind High Wind
Heating Compressor Frequency F<25Hz 25Hz≤F<45Hz 45Hz≤f
Model: HSU-22H03/R2(DB)Domestic Air Conditioner
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