Hitachi UTOPIA RAS-4HVRP2E - Cold Draft Protection (Fb); Forced Stop When Defrosting Is Restored (Ds); Wave Function Setting (UE)

6 Optional functions
RAS-3HVRC2
SMGB0136 rev.0 - 07/2021
121
6
6.1.3.16 Wave function setting (UE)
Press PSW3 and select the settings condition “0” to “1” to set wave function setting “UE”. The maximum running current
limit changes from 40% to 80%, as shown in the attached gure.
? NOTE
Inthecasethatthedemandcurrentcontrolbyexternalinputissetandtheexternalinputsignalisavailable,thisfunctionisnotavailable
evenwhenthedemandcurrentcontrolbyexternalinputsignalisperformed.
20 min.
20 min. 20 min.
20 min.
10 min.
10 min. 10 min.
A Electricity consumption (100%)
B Electricity consumption (40 to 80%)
Setting condition Operation mode
0 Not available (default setting)
1 Value according to external input demand function
? NOTE
• Thecurrentlimitvalueistargetedvalue.Theactualcurrentvaluemaytemporarilybehigherthanthevalueshowninthetableabove
dependingontheoperatingcontrolcondition.
• Whenthescheduledoperationof“DemandFunctionSetting”issetfromthecentralizedcontroller,referto“TechnicalCatalog”and
“Installation&MaintenanceManual”ofthecentralizedcontroller.
6.1.3.17 Cold draft protection (Fb)
Press PSW1 and select the setting condition “0” to “2” to set the cold draft protection “Fb”. When the indoor unit
discharge air temperature drops falls down at cooling operation, the outdoor unit fan stops and the compressor frequency
decreases to prevent a drop in discharge air temperature. If the outlet temperature decreases and the temperature is
less than Thermo-OFF condition even after the compressor frequency decreases, the indoor unit becomes Thermo-OFF
condition. (When Thermo-OFF is activated under this condition, the operation will be restarted after 3 minutes).
? NOTE
• Thermo-ON:Theindoorunitisrunning.
• Thermo-OFF:Theindoorunitstayson,butdoesn’trun.
Setting condition
Outlet temperature
Target value At Thermo-OFF
0 - -
1 10ºC 7ºC
2 12ºC 9ºC
6.1.3.18 Forced stop when defrosting is restored (dS)
The outdoor unit can be stopped after defrosting is completed by setting “dS” to “1” in “Forced stop when defrosting
returns” in “Function selection”.
After stopping, the outdoor unit will start heating after the 3-minute on-guard period.
Setting condition Operation mode
0 Not available (default setting)
1 Thermo-OFF Setting for Outdoor Unit After Defrosting Operation