Daikin FTXN-LV - Compressor Rotation Control Zones; High Pressure Protection

TS13-01 Troubleshooting manual 12
A minimum value was determined among the upper limits rotation, i.e. protection controls.
• Lower limit rotation
A maximum value was determined among the lower limits rotation, i.e. protection controls.
Generally, compressor rotation is controlled within 4 zones: stop, drop, keep, up and reset subjected to a
particular operating temperature/current/pressure.
Zone
Control
Stop
Compressor is stopped when a certain limit reaches the stop zone for abnormality
correction.
Drop
Frequency will be dropped with a timer setting.
Keep
Frequency is maintained at lower/upper limit.
Up
Frequency will be increased with a timer setting.
Reset
Frequency lower/upper limit is canceled and returned to command rotation.
HIGH PRESSURE PROTECTION
- To prevent high pressure in the system.
- Compressor operating frequency is adjusted based on upper limit of coil temperature (RXN-LV)