Daikin SM-12-012, Service Manual

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Service Manual SM-Inverter_(i) 12
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
- The compressor frequency is adjusted based on coil temperature:
• During cooling mode – outdoor coil temperature.
• During heating mode – indoor coil temperature.
- This protection is activated when the coil temperature > 64°C, the compressor stop and OD fan stop after
30s.
- The unit can only be restarted after 3 minutes.