Hitachi RAS-2-HVNP Service Manual page 172

6. Optional functions
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*
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 C and Pd > 3.7 MPa
o
- Ta > 21 C, Ti > 26 C and Pd > 3.7 MPa
o o
- Ta > 15 C, Ti > 29 C and Pa > 3.7 MPa
o o
• Cooling Operation
If the following condition is continued for 1 second, the unit will be under Termo-OFF.
Ta < -7 C
-
o
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):
Standard Specifications (factory default state)
Setting condition
Temperature
conditions under
defrosting
operation
158
SMGB0079 rev.0 - 01/2013
0
1
2
3
Function selection setting Jo:0
Operation mode for cancellation
Not available (default setting)
Heating
Cooling
Heating / Cooling
Heating specification
Function selection setting Jo:1