Haier HBU-18HF03 Manual page 215

0010451289 for HPU-42HF03 indoor unit
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SW3
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The dip switch definition of 0010452620 and 0010451289 are as following:
With/without defrost sensor
With/without pressure switch
Wired/remote control
With/without temp. compensation
CN27 CN3
SW3(1)
√/×
*
*
*
Wiring diagram and PCB photo
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CN17 CN16
SW3(2) SW3(3)
* *
√/× *
* √/×
* *
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SW3(4)
*
*
*
√/×