Prevention Control For Excessively High Discharge Gas Temperature - Hitachi UTOPIA RAS-4HVRP2E Service Manual

5 Control System
Standard control functions

5.6.2 Prevention control for excessively high discharge gas temperature

IU: Indoor unit
104 SMGB0136 rev.0 - 07/2021
Heating operation
IU
< 65ºC
air outlet
temperature
≥ 65ºC
CMC: OFF
Compressor:
OFF
3
No
min
progress
IU
≥ 65ºC
air
outlet temperature
set
temp is
No
lower than air intake
temp
CMC: ON
Compressor:
ON
Thermo-ON/OFF control for indoor unit
Yes
< 65ºC
Yes