Hitachi UTOPIA R32 Series Installation And Operation Manual page 64

Operation
 Setting:
Compressor Manual OFF: DSW301-4 ON.
Manual
OFF of
compressor
Compressor ON: DSW301-4 OFF.
 Manual defrost operation starts
Press PSW1 for more than 3 seconds
during heating operation, the defrost
operation is started after 2 minutes. This
function is not available within 5 minutes
after starting heating operation.
Manual
 Manual defrost operation finishes
defrost
Defrost operation is automatically ended
and the heating operation is started.
PMEN0654 rev.0 - 12/2023
DSW Setting
 When DSW301-4 is ON during
 When DSW301-4 is OFF, the
 Defrost operation is available
 Defrost operation in not
Operation
compressor operation, the
compressor stops to operate
immediately and the indoor
unit is under the condition of
Thermo-OFF.
compressor starts to operate
after the cancellation of
3-minutes guard.
regardless of frosting condition
and total time of heating
operation.
performed when the
temperature of outdoor heat
exchanger is higher than 10°C,
high pressure is higher than
3.3 MPa (33 kgf/cm G) or
2
Thermo-OFF.
Remarks
•
Do not repeat compressor ON/OFF
frequently.
•
Do not repeat defrost operation
frequently.
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