SiBE041525F
Control Specification
Functions and Control
32
3.5
Input Current Control
Outline
The microcomputer calculates the input current while the compressor is running, and sets the
frequency upper limit based on the input current.
In case of heat pump models, this control is the upper limit control of frequency and takes
priority over the lower limit control of four way valve operation compensation.
Detail
Frequency control in each zone
Stop zone
After the input current remains in the stop zone for 2.5 seconds, the compressor is stopped.
Dropping zone
The upper limit of the compressor frequency is defined as operation frequency – 2 Hz.
After this, the output frequency is lowered by 2 Hz every second until it reaches the keep
zone.
Keep zone
The present maximum frequency goes on.
Reset zone
Limit of the frequency is canceled.
Limitation of current dropping and stop value according to the outdoor temperature
The current drops when outdoor temperature becomes higher than a certain level
(depending on the model).
20/25 class
35 class
50 class
60/71 class
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
A
(A)
14.0
14.0
18
18
B
(A)
6.0
6.75
6.5
7.75
10
10.75
12
11.5
C
(A)
5.25
6.0
5.75
7.0
9
9.75
11
10.5
Compressor Stop
Input current
Dropping Zone
Stop Zone
Keep Zone
Reset Zone
(R14643)
A
(A)
B
C
Summary of Contents for FTX20K2V1B
Page 12: ...SiBE041525F 1 List of Functions Part 1 List of Functions 1 Functions 2...
Page 15: ...SiBE041525F Specifications 4 Part 2 Specifications 1 Specifications 5...
Page 16: ...Specifications SiBE041525F 5 Specifications 1 Specifications See corresponding databook...
Page 51: ...SiBE041525F Remote Controller 40 Part 5 Remote Controller 1 Remote Controller 41...
