Haier HSU12 - 5.2 Outdoor Unit Functions and Control

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Domestic Air Conditioner
5.2 Main functions and control specification of outdoor unit
Sensor Code Definition: Tai= Indoor Ambient Temperature, Tao=Outdoor Ambient Temperature,
Tc1=Indoor Coil, Td= Air Discharge, Te= Outdoor Coil, Ts=Air Intake
5.2.1 Outdoor Unit Operation Frequency and Control
Compressor Operation Frequency Range
Compressor Operation Frequency Range:
Outdoor Temperature
İ4 4ī18 ı18
Heating˄Hz˅ 20ī110 20ī90 20ī53
Defrosting˄Hz˅
80
Outdoor Temperature
İ23 23ī32 ı32
Cooling˄Hz˅ 20ī50 20ī70 20ī95
Compressor Startup
Regardless of target frequency of indoor unit, each time when compressor is from off to on, it
must maintain 60Hz,90Hz for one minute (Frequency will be immediately decreased under the
condition that outdoor unit air discharge temperature overheating protection is activated or over
current of compressor) then the compressor will operate towards target frequency. This process
does not exist in normal operation of unit.
Heating
When completing compressor startup operation, it will operate as per frequency of indoor unit.
After 2 minutes, compressor operation frequency will be compensated as per relevant conditions.
Cooling & Dehumidification:
When completing compressor startup operation, it will operate as per frequency of indoor unit.
After 2 minutes, compressor operation frequency will be compensated as per relevant conditions.
Compressor Frequency Increase/Decrease Speed
Rapid Frequency Increase/Decrease Speed 1 ----------1Hz/s
Slow Frequency Increase/Decrease Speed 2 -----------1Hz/10s
HSU12/18VHJ(DB)
25