Daikin FDMR50TVMG, Руководство по обслуживанию

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Control Specification SiSG121917E
77 Part 4 Functions and Control
Notes
4. Control Specification
4.1 Mode Hierarchy
Outline
The air conditioner control has normal operation mode, forced operation mode, and power
transistor test mode for installation and servicing.
Details
 Unless specified otherwise, dry operation command is regarded as cooling operation.

Indoor fan operation cannot be made in multiple indoor units. A forced fan command is made
during forced cooling operation.
4.2 Frequency Control
Outline
Frequency corresponding to each room’s capacity is determined according to the difference
between the target temperature and the temperature of each room thermistor.
Details
The compressor's frequency is determined by taking the following steps.
1.
Determine command frequency
Command frequency is determined in the following order of priority.
(1) Forced cooling
(2) Indoor frequency command
Air conditioner control mode
Forced operation mode
Forced cooling operation (for pump down operation)
Wiring error check operation
Power transistor test mode
Normal operation mode
Fan
Cooling (includes drying)
Stop (indoor unit: OFF)
Discharging from capacitor
Stop
(R23672)
Command frequency Limit frequency
Skip control
Lower limit function
Initial frequency
PI control
Dropping function
Input current control, etc.
Upper limit function
Compressor protection function
Upper limit frequency
FMAX
Lower limit frequency
FMIN
Tar g et frequency
(R12230)
When the shift of the frequency is less than zero (
Δ
F<0) by PI control,
the target frequency is used as the command frequency.