Input Current Control - Daikin CTXG09QVJUW Service Manual

Control Specification
4.6

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.
Details
Frequency control in each zone
Stop zone
Dropping zone
Keep zone
Reset zone
A (A)
B (A)
C (A)
Limitation of current dropping and stop value according to the outdoor temperature
86
(A)
A
B
C
Input current
After the input current remains in the stop zone for 2.5 seconds, the compressor is stopped.
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.
The present maximum frequency goes on.
Limit of the frequency is canceled.
18 class
Cooling Heating
15.5 17.5
14.0 15.5
13.0 14.5
The current drops when outdoor temperature becomes higher than a certain level (depending
on the model).
Compressor Stop
24 class
Cooling Heating
15.5 18.5
14.0 17.5
13.0 16.5
SiUS121632EA
Stop zone
Dropping zone
Keep zone
Reset zone
(R23249)
Functions and Control