Operation Flow Chart; Cooling / Dry Operation - Daikin RZQ Series FCQ20EVA Service Manual

Operation Flow Chart

3. Operation Flow Chart

3.1

Cooling / Dry Operation

Cooling / Dry
Cooling / Dry
Compressor step control
Electronic expansion valve PI control
PMV control
Low pressure protection control
High pressure protection control
Discharge pipe temperature protection control
Oil recovery operation
starting judgement
Oil recovery operation
Oil recovery operation
ending judgement
B
1. Except RZQ20/24LVA
Note:
2. Only for RZQ20/24LVA
25
Power supply ON
Initialize electronic expansion valve
Initialize micro-computer
Stopping
∗1
Crankcase heater control
∗2
Preheating operation control
Remote controller operation
judgement
Operation mode
judgement
Heating
Heating
Room thermostat control
Starting control
Four way valve changeover
Normal control
Thermostat OFF judgement
Room thermostat control
Thermostat OFF by freeze-up protection control
Restart standby
A
Emergency
Emergency
operation
B
Inverter current protection control
Radiation fin temperature protection control
Overall current protection control
Low outdoor air temperature cooling control
Simulated operation
Pump down residual operation
A
Standby
Remote control
judgement
operation OFF
judgement
Function and Control
SiME281501E
Abnormal stop
judgement