Hitachi RAS-4-HNPE - Test Run Procedure with PC-ARF Remote Control

6. Optional functions
158
SMGB0079 rev.0 - 01/2013
Cancellation of Outdoor Ambient Temperature Limit (GS)
Press “PSW1” and select the setting condition “0” to “3” at the cancellation of outdoor ambient temperature limit of “GS”.
Then, this function can be set.
The heating operation is continued under a high outdoor temperature or the cooling operation is continued under a low
temperature.
Setting condition* Operation mode for cancellation
0 Not available (default setting)
1 Heating
2 Cooling
3 Heating / Cooling
Cancelled Conditions for Outdoor Unit Ambient Temperature Limit
• Heating Operation
If one of following conditions is continued for 1 second, the unit will be under Termo-OFF.
- Ta > 23
o
C and Pd > 3.7 MPa
- Ta > 21
o
C, Ti > 26
o
C and Pd > 3.7 MPa
- Ta > 15
o
C, Ti > 29
o
C and Pa > 3.7 MPa
• Cooling Operation
If the following condition is continued for 1 second, the unit will be under Termo-OFF.
- Ta < -7
o
C
Ta: Outdoor Ambient Temperature
Ti: Indoor Air Inlet Temperature
Pd: Discharge Pressure
N O T E
Ifthisfunctionissetandtheoutdoorunitoperatesinthestoppageareaforalongtime,theoutdoorunitmaybe
damagedsinceprotectioncontroliscancelled.
Change of defrost condition (Jo)
Press “PSW1” and select the setting condition “1” at the change of defrost condition “Jo”.
Example for RAS-(3-12)H(V)N(P/C)(E):
Setting condition
Standard Specications (factory default state) Heating specication
Function selection setting
Jo:0 Function selection setting Jo:1
Temperature
conditions under
defrosting
operation