Cancellation Of The Outdoor Ambient Temperature Limit (Gs); Cancellation Of Outdoor Ambient Temperature Limit - Hitachi UTOPIA RAS-4HVRP2E Service Manual

6 Optional functions
RAS-(4-6)H(V)(R/N)(C/P)2E

6.2.3.5 Cancellation of the outdoor ambient temperature limit (GS)

Press PSW1 and select the setting condition "0" to "3" at the cancellation of outdoor ambient temperature limit of G5.
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
0
1
2
3

Heating operation
The limitation of the permissible outdoor temperature
area in heating operation (factory setting) as shown in
the right figure is cancelled.
?
N O T E
When the outdoor ambient temperature limit for heating opera-
tion is cancelled, the operation may stop due to increasing high
pressure since the protection control is not cancelled.

Cooling operation
The limitation of the permissible outdoor temperature area
in cooling operation (factory-set) as shown in the right
figure is cancelled.
?
N O T E
When the outdoor ambient temperature limit for cooling operation is
cancelled, the operation may stop due to decreasing low pressure
since the protection control is not cancelled.
?
N O T E
If this function is set and the outdoor unit operates in the operation stoppage area shown in the above figure for a long time, the outdoor
unit may be damaged since protection control is cancelled and some alarm codes by abnormal operation may occur. If the alarm codes
occur frequently, contact your distributor or contractor.
136 SMGB0136 rev.0 - 07/2021
Operation mode for cancellation
Not available (default setting)
Heating
Cooling
Heating/Cooling
29
23
Indoor Inlet Air
Temperature (ºC)
-22
0
Operation
stoppage area
-7
Operation
stoppage area
15 21
Outdoor Temperature (ºC)
27
Indoor Inlet Air
Temperature (ºC)
21
38
Outdoor Temperature (ºC)